# GitCaddy API Reference

Complete technical reference for developers integrating with or using GitCaddy, a self-hosted Git repository management platform.

## Table of Contents

- [Introduction](#introduction)
- [Authentication](#authentication)
  - [Personal Access Tokens](#personal-access-tokens)
  - [OAuth2 Authentication](#oauth2-authentication)
  - [WebAuthn (Passkeys)](#webauthn-passkeys)
- [REST API Endpoints](#rest-api-endpoints)
  - [Repository APIs](#repository-apis)
  - [Issue APIs](#issue-apis)
  - [Pull Request APIs](#pull-request-apis)
  - [Organization APIs](#organization-apis)
  - [User APIs](#user-apis)
  - [Package Registry APIs](#package-registry-apis)
  - [Actions APIs](#actions-apis)
  - [Vault APIs](#vault-apis)
- [Git Protocol](#git-protocol)
- [WebSocket APIs](#websocket-apis)
- [Frontend JavaScript APIs](#frontend-javascript-apis)
  - [Core Utilities](#core-utilities)
  - [DOM Manipulation](#dom-manipulation)
  - [Web Components](#web-components)
  - [Vue Components](#vue-components)
- [Error Codes](#error-codes)
- [Rate Limiting](#rate-limiting)
- [Webhooks](#webhooks)
- [Code Examples](#code-examples)

## Introduction

GitCaddy provides comprehensive REST APIs for repository management, collaboration tools, CI/CD workflows, package registry, and enterprise features. All API endpoints are accessible at:

```
https://your-gitcaddy-instance.com/api/v1/
```

**Base URL Format:**
```
https://{instance}/api/v1/{endpoint}
```

**Content Type:**
All requests and responses use `application/json` unless otherwise specified.

**API Versioning:**
Current stable version: `v1`

## Authentication

GitCaddy supports multiple authentication methods for API access.

### Personal Access Tokens

Personal access tokens (PATs) provide programmatic access to the GitCaddy API.

**Creating a Token:**

1. Navigate to User Settings → Applications → Manage Access Tokens
2. Click "Generate New Token"
3. Set token name and scopes
4. Copy the generated token (shown only once)

**Using Tokens:**

Include the token in the `Authorization` header:

```http
Authorization: token YOUR_ACCESS_TOKEN
```

**Example Request:**

```bash
curl -H "Authorization: token abc123def456" \
  https://gitcaddy.example.com/api/v1/user
```

**Token Scopes:**

| Scope | Description |
|-------|-------------|
| `repo` | Full access to repositories |
| `repo:status` | Read-only access to repository status |
| `public_repo` | Access to public repositories only |
| `admin:org` | Full organization administration |
| `write:org` | Write access to organizations |
| `read:org` | Read-only organization access |
| `admin:public_key` | Manage public SSH keys |
| `admin:repo_hook` | Manage repository webhooks |
| `admin:org_hook` | Manage organization webhooks |
| `notification` | Access notifications |
| `user` | Full user profile access |
| `read:user` | Read-only user profile access |
| `user:email` | Access user email addresses |
| `delete_repo` | Delete repositories |
| `package` | Access package registry |
| `admin:gpg_key` | Manage GPG keys |
| `admin:application` | Manage OAuth applications |

### OAuth2 Authentication

GitCaddy supports OAuth2 for third-party application integration.

**OAuth2 Flow:**

1. **Register Application:**
   - User Settings → Applications → OAuth2 Applications
   - Create new OAuth2 application
   - Note `client_id` and `client_secret`

2. **Authorization Request:**

```http
GET /login/oauth/authorize?client_id={client_id}&redirect_uri={redirect_uri}&response_type=code&state={state}
```

3. **Token Exchange:**

```http
POST /login/oauth/access_token
Content-Type: application/json

{
  "client_id": "your_client_id",
  "client_secret": "your_client_secret",
  "code": "authorization_code",
  "grant_type": "authorization_code",
  "redirect_uri": "https://your-app.com/callback"
}
```

**Response:**

```json
{
  "access_token": "gho_16C7e42F292c6912E7710c838347Ae178B4a",
  "token_type": "bearer",
  "scope": "repo,user"
}
```

4. **Using Access Token:**

```http
Authorization: Bearer gho_16C7e42F292c6912E7710c838347Ae178B4a
```

**Supported OAuth2 Providers:**

GitCaddy can authenticate users via external OAuth2 providers:
- GitHub
- GitLab
- Bitbucket
- Google
- Microsoft Azure AD
- Custom OpenID Connect providers

### WebAuthn (Passkeys)

GitCaddy supports WebAuthn for passwordless authentication and two-factor authentication.

**Registration API:**

```javascript
// Client-side registration
const response = await fetch('/user/settings/security/webauthn/register', {
  method: 'GET',
  credentials: 'include'
});

const options = await response.json();

// Create credential
const credential = await navigator.credentials.create({
  publicKey: options
});

// Send credential to server
await fetch('/user/settings/security/webauthn/register', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    name: 'My Security Key',
    credential: credential
  })
});
```

**Authentication API:**

```javascript
// Get authentication challenge
const response = await fetch('/user/webauthn/assertion', {
  method: 'GET'
});

const options = await response.json();

// Get credential
const assertion = await navigator.credentials.get({
  publicKey: options
});

// Verify assertion
await fetch('/user/webauthn/assertion', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json'
  },
  body: JSON.stringify(assertion)
});
```

## REST API Endpoints

### Repository APIs

#### List User Repositories

```http
GET /api/v1/user/repos
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `page` | integer | No | Page number (default: 1) |
| `limit` | integer | No | Page size (default: 10, max: 50) |
| `type` | string | No | Filter by type: `owner`, `collaborator`, `member` |

**Response:**

```json
[
  {
    "id": 1,
    "owner": {
      "id": 1,
      "login": "username",
      "full_name": "User Name",
      "avatar_url": "https://gitcaddy.example.com/avatars/1"
    },
    "name": "my-repo",
    "full_name": "username/my-repo",
    "description": "Repository description",
    "private": false,
    "fork": false,
    "parent": null,
    "empty": false,
    "mirror": false,
    "size": 1024,
    "html_url": "https://gitcaddy.example.com/username/my-repo",
    "ssh_url": "git@gitcaddy.example.com:username/my-repo.git",
    "clone_url": "https://gitcaddy.example.com/username/my-repo.git",
    "website": "",
    "stars_count": 5,
    "forks_count": 2,
    "watchers_count": 3,
    "open_issues_count": 1,
    "default_branch": "main",
    "archived": false,
    "created_at": "2024-01-01T00:00:00Z",
    "updated_at": "2024-01-15T12:30:00Z",
    "permissions": {
      "admin": true,
      "push": true,
      "pull": true
    }
  }
]
```

#### Create Repository

```http
POST /api/v1/user/repos
```

**Request Body:**

```json
{
  "name": "new-repo",
  "description": "My new repository",
  "private": false,
  "auto_init": true,
  "gitignores": "Go",
  "license": "MIT",
  "readme": "Default",
  "default_branch": "main"
}
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `name` | string | Yes | Repository name |
| `description` | string | No | Repository description |
| `private` | boolean | No | Create as private (default: false) |
| `auto_init` | boolean | No | Initialize with README (default: false) |
| `gitignores` | string | No | .gitignore template name |
| `license` | string | No | License template (MIT, Apache-2.0, GPL-3.0, etc.) |
| `readme` | string | No | README template |
| `default_branch` | string | No | Default branch name (default: main) |
| `trust_model` | string | No | Trust model: `default`, `collaborator`, `committer`, `collaboratorcommitter` |

**Response:** `201 Created`

```json
{
  "id": 2,
  "name": "new-repo",
  "full_name": "username/new-repo",
  "private": false,
  "html_url": "https://gitcaddy.example.com/username/new-repo",
  "clone_url": "https://gitcaddy.example.com/username/new-repo.git",
  "created_at": "2024-01-20T10:00:00Z"
}
```

#### Get Repository

```http
GET /api/v1/repos/{owner}/{repo}
```

**Response:**

```json
{
  "id": 1,
  "owner": {
    "id": 1,
    "login": "username",
    "full_name": "User Name"
  },
  "name": "my-repo",
  "full_name": "username/my-repo",
  "description": "Repository description",
  "private": false,
  "default_branch": "main",
  "permissions": {
    "admin": true,
    "push": true,
    "pull": true
  }
}
```

#### Delete Repository

```http
DELETE /api/v1/repos/{owner}/{repo}
```

**Response:** `204 No Content`

#### List Repository Branches

```http
GET /api/v1/repos/{owner}/{repo}/branches
```

**Response:**

```json
[
  {
    "name": "main",
    "commit": {
      "id": "abc123def456",
      "message": "Initial commit",
      "url": "https://gitcaddy.example.com/username/my-repo/commit/abc123def456"
    },
    "protected": true,
    "user_can_push": true,
    "user_can_merge": true
  }
]
```

#### Create Branch

```http
POST /api/v1/repos/{owner}/{repo}/branches
```

**Request Body:**

```json
{
  "new_branch_name": "feature-branch",
  "old_branch_name": "main"
}
```

#### Get Branch Protection

```http
GET /api/v1/repos/{owner}/{repo}/branch_protections/{branch}
```

**Response:**

```json
{
  "branch_name": "main",
  "enable_push": false,
  "enable_push_whitelist": true,
  "push_whitelist_usernames": ["admin"],
  "push_whitelist_teams": ["core-team"],
  "push_whitelist_deploy_keys": false,
  "enable_merge_whitelist": true,
  "merge_whitelist_usernames": ["maintainer"],
  "merge_whitelist_teams": ["reviewers"],
  "enable_status_check": true,
  "status_check_contexts": ["ci/tests", "ci/lint"],
  "required_approvals": 2,
  "enable_approvals_whitelist": false,
  "block_on_rejected_reviews": true,
  "dismiss_stale_approvals": true,
  "require_signed_commits": true,
  "protected_file_patterns": "*.lock",
  "unprotected_file_patterns": "docs/*"
}
```

#### List Repository Tags

```http
GET /api/v1/repos/{owner}/{repo}/tags
```

**Response:**

```json
[
  {
    "name": "v1.0.0",
    "commit": {
      "sha": "abc123def456",
      "url": "https://gitcaddy.example.com/username/my-repo/commit/abc123def456"
    },
    "zipball_url": "https://gitcaddy.example.com/username/my-repo/archive/v1.0.0.zip",
    "tarball_url": "https://gitcaddy.example.com/username/my-repo/archive/v1.0.0.tar.gz"
  }
]
```

#### Get File Contents

```http
GET /api/v1/repos/{owner}/{repo}/contents/{filepath}?ref={branch}
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `ref` | string | No | Branch, tag, or commit SHA (default: default branch) |

**Response:**

```json
{
  "name": "README.md",
  "path": "README.md",
  "sha": "abc123",
  "type": "file",
  "size": 1024,
  "encoding": "base64",
  "content": "IyBNeVJlcG8KClRoaXMgaXMgYSBSRUFETUUgZmlsZS4=",
  "target": null,
  "url": "https://gitcaddy.example.com/api/v1/repos/username/my-repo/contents/README.md",
  "html_url": "https://gitcaddy.example.com/username/my-repo/src/branch/main/README.md",
  "git_url": "https://gitcaddy.example.com/api/v1/repos/username/my-repo/git/blobs/abc123",
  "download_url": "https://gitcaddy.example.com/username/my-repo/raw/branch/main/README.md"
}
```

#### Create/Update File

```http
POST /api/v1/repos/{owner}/{repo}/contents/{filepath}
```

**Request Body:**

```json
{
  "content": "base64_encoded_content",
  "message": "Create README.md",
  "branch": "main",
  "sha": "abc123def456",
  "author": {
    "name": "Author Name",
    "email": "author@example.com"
  },
  "committer": {
    "name": "Committer Name",
    "email": "committer@example.com"
  },
  "dates": {
    "author": "2024-01-20T10:00:00Z",
    "committer": "2024-01-20T10:00:00Z"
  },
  "signoff": false,
  "new_branch": "feature-branch"
}
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `content` | string | Yes | Base64-encoded file content |
| `message` | string | Yes | Commit message |
| `branch` | string | No | Branch name (default: default branch) |
| `sha` | string | No | Blob SHA for update (required when updating) |
| `new_branch` | string | No | Create new branch for commit |

#### Delete File

```http
DELETE /api/v1/repos/{owner}/{repo}/contents/{filepath}
```

**Request Body:**

```json
{
  "message": "Delete file",
  "sha": "abc123def456",
  "branch": "main"
}
```

#### Fork Repository

```http
POST /api/v1/repos/{owner}/{repo}/forks
```

**Request Body:**

```json
{
  "organization": "my-org",
  "name": "forked-repo"
}
```

#### List Forks

```http
GET /api/v1/repos/{owner}/{repo}/forks
```

#### Mirror Repository

```http
POST /api/v1/repos/migrate
```

**Request Body:**

```json
{
  "clone_addr": "https://github.com/user/repo.git",
  "auth_username": "username",
  "auth_password": "password_or_token",
  "uid": 1,
  "repo_name": "mirrored-repo",
  "mirror": true,
  "private": false,
  "description": "Mirrored repository"
}
```

### Issue APIs

#### List Repository Issues

```http
GET /api/v1/repos/{owner}/{repo}/issues
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `state` | string | No | Filter by state: `open`, `closed`, `all` (default: open) |
| `labels` | string | No | Comma-separated label IDs or names |
| `q` | string | No | Search query |
| `type` | string | No | Filter by type: `issues`, `pulls` |
| `milestones` | string | No | Comma-separated milestone names |
| `since` | string | No | Only issues updated after this time (ISO 8601) |
| `before` | string | No | Only issues updated before this time (ISO 8601) |
| `created_by` | string | No | Filter by creator username |
| `assigned_by` | string | No | Filter by assignee username |
| `mentioned_by` | string | No | Filter by mentioned username |
| `page` | integer | No | Page number |
| `limit` | integer | No | Page size |

**Response:**

```json
[
  {
    "id": 1,
    "url": "https://gitcaddy.example.com/api/v1/repos/username/my-repo/issues/1",
    "html_url": "https://gitcaddy.example.com/username/my-repo/issues/1",
    "number": 1,
    "user": {
      "id": 1,
      "login": "username",
      "full_name": "User Name"
    },
    "title": "Bug: Application crashes on startup",
    "body": "Detailed description of the issue...",
    "labels": [
      {
        "id": 1,
        "name": "bug",
        "color": "#ee0701",
        "description": "Something isn't working"
      }
    ],
    "milestone": {
      "id": 1,
      "title": "v1.0",
      "description": "First release",
      "state": "open",
      "due_on": "2024-12-31T23:59:59Z"
    },
    "assignees": [
      {
        "id": 2,
        "login": "developer"
      }
    ],
    "state": "open",
    "is_locked": false,
    "comments": 3,
    "created_at": "2024-01-15T10:00:00Z",
    "updated_at": "2024-01-16T14:30:00Z",
    "closed_at": null,
    "due_date": null,
    "pull_request": null
  }
]
```

#### Create Issue

```http
POST /api/v1/repos/{owner}/{repo}/issues
```

**Request Body:**

```json
{
  "title": "New issue title",
  "body": "Issue description with **markdown** support",
  "assignees": ["developer1", "developer2"],
  "labels": [1, 2],
  "milestone": 1,
  "closed": false,
  "due_date": "2024-12-31T23:59:59Z",
  "ref": "main"
}
```

**Response:** `201 Created`

#### Get Issue

```http
GET /api/v1/repos/{owner}/{repo}/issues/{index}
```

#### Update Issue

```http
PATCH /api/v1/repos/{owner}/{repo}/issues/{index}
```

**Request Body:**

```json
{
  "title": "Updated title",
  "body": "Updated description",
  "state": "closed",
  "assignees": ["user1"],
  "labels": [1, 3],
  "milestone": 2,
  "due_date": "2024-12-31T23:59:59Z",
  "unset_due_date": false
}
```

#### List Issue Comments

```http
GET /api/v1/repos/{owner}/{repo}/issues/{index}/comments
```

**Response:**

```json
[
  {
    "id": 1,
    "html_url": "https://gitcaddy.example.com/username/my-repo/issues/1#issuecomment-1",
    "pull_request_url": "",
    "issue_url": "https://gitcaddy.example.com/api/v1/repos/username/my-repo/issues/1",
    "user": {
      "id": 1,
      "login": "username"
    },
    "original_author": "",
    "original_author_id": 0,
    "body": "This is a comment on the issue",
    "created_at": "2024-01-15T11:00:00Z",
    "updated_at": "2024-01-15T11:00:00Z"
  }
]
```

#### Create Issue Comment

```http
POST /api/v1/repos/{owner}/{repo}/issues/{index}/comments
```

**Request Body:**

```json
{
  "body": "Comment text with **markdown** support"
}
```

#### Edit Issue Comment

```http
PATCH /api/v1/repos/{owner}/{repo}/issues/comments/{id}
```

#### Delete Issue Comment

```http
DELETE /api/v1/repos/{owner}/{repo}/issues/comments/{id}
```

#### List Issue Labels

```http
GET /api/v1/repos/{owner}/{repo}/labels
```

**Response:**

```json
[
  {
    "id": 1,
    "name": "bug",
    "color": "#ee0701",
    "description": "Something isn't working",
    "url": "https://gitcaddy.example.com/api/v1/repos/username/my-repo/labels/1"
  }
]
```

#### Create Label

```http
POST /api/v1/repos/{owner}/{repo}/labels
```

**Request Body:**

```json
{
  "name": "enhancement",
  "color": "#a2eeef",
  "description": "New feature or request"
}
```

#### Track Time on Issue

```http
POST /api/v1/repos/{owner}/{repo}/issues/{index}/times
```

**Request Body:**

```json
{
  "time": 3600,
  "created": "2024-01-15T10:00:00Z",
  "user_name": "username"
}
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `time` | integer | Yes | Time in seconds |
| `created` | string | No | Timestamp (ISO 8601) |
| `user_name` | string | No | Username (admin only) |

#### List Tracked Times

```http
GET /api/v1/repos/{owner}/{repo}/issues/{index}/times
```

### Pull Request APIs

#### List Pull Requests

```http
GET /api/v1/repos/{owner}/{repo}/pulls
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `state` | string | No | Filter by state: `open`, `closed`, `all` |
| `sort` | string | No | Sort by: `oldest`, `recentupdate`, `leastupdate`, `mostcomment`, `leastcomment`, `priority` |
| `milestone` | integer | No | Filter by milestone ID |
| `labels` | string | No | Comma-separated label IDs |
| `page` | integer | No | Page number |
| `limit` | integer | No | Page size |

**Response:**

```json
[
  {
    "id": 1,
    "url": "https://gitcaddy.example.com/api/v1/repos/username/my-repo/pulls/1",
    "number": 1,
    "user": {
      "id": 1,
      "login": "contributor"
    },
    "title": "Add new feature",
    "body": "This PR adds a new feature...",
    "labels": [],
    "milestone": null,
    "assignees": [],
    "state": "open",
    "is_locked": false,
    "comments": 2,
    "html_url": "https://gitcaddy.example.com/username/my-repo/pulls/1",
    "diff_url": "https://gitcaddy.example.com/username/my-repo/pulls/1.diff",
    "patch_url": "https://gitcaddy.example.com/username/my-repo/pulls/1.patch",
    "mergeable": true,
    "merged": false,
    "merged_at": null,
    "merge_commit_sha": null,
    "merged_by": null,
    "base": {
      "label": "main",
      "ref": "main",
      "sha": "abc123",
      "repo_id": 1,
      "repo": {
        "id": 1,
        "name": "my-repo",
        "full_name": "username/my-repo"
      }
    },
    "head": {
      "label": "contributor:feature-branch",
      "ref": "feature-branch",
      "sha": "def456",
      "repo_id": 2,
      "repo": {
        "id": 2,
        "name": "my-repo",
        "full_name": "contributor/my-repo"
      }
    },
    "merge_base": "abc123",
    "due_date": null,
    "created_at": "2024-01-15T10:00:00Z",
    "updated_at": "2024-01-16T14:30:00Z",
    "closed_at": null
  }
]
```

#### Create Pull Request

```http
POST /api/v1/repos/{owner}/{repo}/pulls
```

**Request Body:**

```json
{
  "title": "Add new feature",
  "body": "Detailed description of changes",
  "head": "feature-branch",
  "base": "main",
  "assignees": ["reviewer1"],
  "labels": [1],
  "milestone": 1,
  "due_date": "2024-12-31T23:59:59Z"
}
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `title` | string | Yes | PR title |
| `body` | string | No | PR description |
| `head` | string | Yes | Branch containing changes |
| `base` | string | Yes | Branch to merge into |
| `assignees` | array | No | Array of usernames |
| `labels` | array | No | Array of label IDs |
| `milestone` | integer | No | Milestone ID |

#### Get Pull Request

```http
GET /api/v1/repos/{owner}/{repo}/pulls/{index}
```

#### Update Pull Request

```http
PATCH /api/v1/repos/{owner}/{repo}/pulls/{index}
```

**Request Body:**

```json
{
  "title": "Updated title",
  "body": "Updated description",
  "base": "main",
  "assignees": ["reviewer1", "reviewer2"],
  "labels": [1, 2],
  "milestone": 1,
  "state": "closed",
  "due_date": "2024-12-31T23:59:59Z"
}
```

#### Merge Pull Request

```http
POST /api/v1/repos/{owner}/{repo}/pulls/{index}/merge
```

**Request Body:**

```json
{
  "Do": "merge",
  "MergeMessageField": "Merge pull request #1",
  "MergeTitleField": "Add new feature",
  "delete_branch_after_merge": true,
  "force_merge": false,
  "head_commit_id": "def456",
  "merge_when_checks_succeed": false
}
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `Do` | string | Yes | Merge method: `merge`, `rebase`, `rebase-merge`, `squash`, `manually-merged` |
| `MergeMessageField` | string | No | Merge commit message |
| `MergeTitleField` | string | No | Merge commit title |
| `delete_branch_after_merge` | boolean | No | Delete head branch after merge |
| `force_merge` | boolean | No | Force merge even if checks fail |
| `head_commit_id` | string | No | Expected head commit SHA |

#### List PR Reviews

```http
GET /api/v1/repos/{owner}/{repo}/pulls/{index}/reviews
```

**Response:**

```json
[
  {
    "id": 1,
    "user": {
      "id": 2,
      "login": "reviewer"
    },
    "body": "Looks good to me!",
    "commit_id": "def456",
    "state": "APPROVED",
    "html_url": "https://gitcaddy.example.com/username/my-repo/pulls/1#pullrequestreview-1",
    "submitted_at": "2024-01-16T10:00:00Z"
  }
]
```

#### Create PR Review

```http
POST /api/v1/repos/{owner}/{repo}/pulls/{index}/reviews
```

**Request Body:**

```json
{
  "body": "Review comment",
  "event": "APPROVED",
  "comments": [
    {
      "path": "src/main.go",
      "body": "Consider refactoring this function",
      "old_position": 0,
      "new_position": 42
    }
  ]
}
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `body` | string | No | Overall review comment |
| `event` | string | Yes | Review state: `APPROVED`, `REQUEST_CHANGES`, `COMMENT` |
| `comments` | array | No | Array of line comments |

#### Submit PR Review

```http
POST /api/v1/repos/{owner}/{repo}/pulls/{index}/reviews/{id}
```

#### Dismiss PR Review

```http
POST /api/v1/repos/{owner}/{repo}/pulls/{index}/reviews/{id}/dismissals
```

**Request Body:**

```json
{
  "message": "Outdated review"
}
```

#### Request AI Code Review

```http
POST /api/v1/repos/{owner}/{repo}/pulls/{index}/ai-review
```

**Request Body:**

```json
{
  "provider": "openai",
  "model": "gpt-4"
}
```

**Response:**

```json
{
  "review_id": 42,
  "status": "pending",
  "message": "AI review requested. Results will be posted as comments."
}
```

### Organization APIs

#### List Organizations

```http
GET /api/v1/orgs
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `page` | integer | No | Page number |
| `limit` | integer | No | Page size |

#### Get Organization

```http
GET /api/v1/orgs/{org}
```

**Response:**

```json
{
  "id": 1,
  "username": "my-org",
  "full_name": "My Organization",
  "avatar_url": "https://gitcaddy.example.com/avatars/1",
  "description": "Organization description",
  "website": "https://example.com",
  "location": "San Francisco, CA",
  "visibility": "public",
  "repo_admin_change_team_access": false,
  "username": "my-org"
}
```

#### Create Organization

```http
POST /api/v1/orgs
```

**Request Body:**

```json
{
  "username": "new-org",
  "full_name": "New Organization",
  "description": "Organization description",
  "website": "https://example.com",
  "location": "San Francisco, CA",
  "visibility": "public",
  "repo_admin_change_team_access": false
}
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `username` | string | Yes | Organization username |
| `full_name` | string | No | Display name |
| `description` | string | No | Organization description |
| `website` | string | No | Website URL |
| `location` | string | No | Location |
| `visibility` | string | No | Visibility: `public`, `limited`, `private` |

#### Edit Organization

```http
PATCH /api/v1/orgs/{org}
```

#### Delete Organization

```http
DELETE /api/v1/orgs/{org}
```

#### List Organization Teams

```http
GET /api/v1/orgs/{org}/teams
```

**Response:**

```json
[
  {
    "id": 1,
    "name": "core-team",
    "description": "Core development team",
    "organization": {
      "id": 1,
      "username": "my-org",
      "full_name": "My Organization"
    },
    "permission": "admin",
    "can_create_org_repo": true,
    "includes_all_repositories": false,
    "units": [
      "repo.code",
      "repo.issues",
      "repo.pulls",
      "repo.releases",
      "repo.wiki"
    ]
  }
]
```

#### Create Team

```http
POST /api/v1/orgs/{org}/teams
```

**Request Body:**

```json
{
  "name": "new-team",
  "description": "Team description",
  "permission": "write",
  "can_create_org_repo": false,
  "includes_all_repositories": false,
  "units": [
    "repo.code",
    "repo.issues",
    "repo.pulls"
  ]
}
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `name` | string | Yes | Team name |
| `description` | string | No | Team description |
| `permission` | string | No | Permission level: `read`, `write`, `admin` |
| `units` | array | No | Repository unit permissions |

#### List Team Members

```http
GET /api/v1/teams/{id}/members
```

#### Add Team Member

```http
PUT /api/v1/teams/{id}/members/{username}
```

#### Remove Team Member

```http
DELETE /api/v1/teams/{id}/members/{username}
```

#### List Team Repositories

```http
GET /api/v1/teams/{id}/repos
```

#### Add Team Repository

```http
PUT /api/v1/teams/{id}/repos/{org}/{repo}
```

### User APIs

#### Get Authenticated User

```http
GET /api/v1/user
```

**Response:**

```json
{
  "id": 1,
  "login": "username",
  "full_name": "User Name",
  "email": "user@example.com",
  "avatar_url": "https://gitcaddy.example.com/avatars/1",
  "language": "en-US",
  "is_admin": false,
  "last_login": "2024-01-20T10:00:00Z",
  "created": "2023-01-01T00:00:00Z",
  "restricted": false,
  "active": true,
  "prohibit_login": false,
  "location": "San Francisco",
  "website": "https://example.com",
  "description": "User bio",
  "visibility": "public",
  "followers_count": 10,
  "following_count": 5,
  "starred_repos_count": 20
}
```

#### Get User

```http
GET /api/v1/users/{username}
```

#### List User Emails

```http
GET /api/v1/user/emails
```

**Response:**

```json
[
  {
    "email": "user@example.com",
    "verified": true,
    "primary": true
  },
  {
    "email": "alternate@example.com",
    "verified": false,
    "primary": false
  }
]
```

#### Add Email

```http
POST /api/v1/user/emails
```

**Request Body:**

```json
{
  "emails": ["new@example.com"]
}
```

#### Delete Email

```http
DELETE /api/v1/user/emails
```

**Request Body:**

```json
{
  "emails": ["old@example.com"]
}
```

#### List SSH Keys

```http
GET /api/v1/user/keys
```

**Response:**

```json
[
  {
    "id": 1,
    "key": "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC...",
    "url": "https://gitcaddy.example.com/api/v1/user/keys/1",
    "title": "Work Laptop",
    "fingerprint": "SHA256:abc123def456",
    "created_at": "2024-01-01T00:00:00Z",
    "read_only": false
  }
]
```

#### Add SSH Key

```http
POST /api/v1/user/keys
```

**Request Body:**

```json
{
  "title": "My Key",
  "key": "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC...",
  "read_only": false
}
```

#### Delete SSH Key

```http
DELETE /api/v1/user/keys/{id}
```

#### List GPG Keys

```http
GET /api/v1/user/gpg_keys
```

**Response:**

```json
[
  {
    "id": 1,
    "primary_key_id": "",
    "key_id": "ABC123DEF456",
    "public_key": "-----BEGIN PGP PUBLIC KEY BLOCK-----\n...",
    "emails": [
      {
        "email": "user@example.com",
        "verified": true
      }
    ],
    "subkeys": [],
    "can_sign": true,
    "can_encrypt_comms": true,
    "can_encrypt_storage": true,
    "can_certify": true,
    "created_at": "2024-01-01T00:00:00Z",
    "expires_at": "2025-01-01T00:00:00Z"
  }
]
```

#### Add GPG Key

```http
POST /api/v1/user/gpg_keys
```

**Request Body:**

```json
{
  "armored_public_key": "-----BEGIN PGP PUBLIC KEY BLOCK-----\n..."
}
```

#### List Starred Repositories

```http
GET /api/v1/user/starred
```

#### Star Repository

```http
PUT /api/v1/user/starred/{owner}/{repo}
```

#### Unstar Repository

```http
DELETE /api/v1/user/starred/{owner}/{repo}
```

#### List Watched Repositories

```http
GET /api/v1/user/subscriptions
```

#### Watch Repository

```http
PUT /api/v1/repos/{owner}/{repo}/subscription
```

#### Unwatch Repository

```http
DELETE /api/v1/repos/{owner}/{repo}/subscription
```

### Package Registry APIs

GitCaddy supports multiple package formats with dedicated API endpoints.

#### List Packages

```http
GET /api/v1/packages/{owner}
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `type` | string | No | Package type: `npm`, `maven`, `docker`, `pypi`, `alpine`, etc. |
| `q` | string | No | Search query |
| `page` | integer | No | Page number |
| `limit` | integer | No | Page size |

**Response:**

```json
[
  {
    "id": 1,
    "name": "my-package",
    "version": "1.0.0",
    "type": "npm",
    "owner": {
      "id": 1,
      "login": "username"
    },
    "repository": {
      "id": 1,
      "name": "my-repo",
      "full_name": "username/my-repo"
    },
    "creator": {
      "id": 1,
      "login": "username"
    },
    "html_url": "https://gitcaddy.example.com/username/-/packages/npm/my-package/1.0.0",
    "created_at": "2024-01-15T10:00:00Z"
  }
]
```

#### Get Package

```http
GET /api/v1/packages/{owner}/{type}/{name}/{version}
```

#### Delete Package

```http
DELETE /api/v1/packages/{owner}/{type}/{name}/{version}
```

#### NPM Package API

**Configure npm registry:**

```bash
npm config set registry https://gitcaddy.example.com/api/packages/{owner}/npm/
npm config set //gitcaddy.example.com/api/packages/{owner}/npm/:_authToken {token}
```

**Publish package:**

```bash
npm publish
```

**Install package:**

```bash
npm install @{owner}/{package}
```

#### Docker Registry API

**Login:**

```bash
docker login gitcaddy.example.com
```

**Tag and push:**

```bash
docker tag myimage gitcaddy.example.com/{owner}/{image}:{tag}
docker push gitcaddy.example.com/{owner}/{image}:{tag}
```

**Pull:**

```bash
docker pull gitcaddy.example.com/{owner}/{image}:{tag}
```

#### Maven Package API

**Configure in `pom.xml`:**

```xml
<repositories>
  <repository>
    <id>gitcaddy</id>
    <url>https://gitcaddy.example.com/api/packages/{owner}/maven</url>
  </repository>
</repositories>

<distributionManagement>
  <repository>
    <id>gitcaddy</id>
    <url>https://gitcaddy.example.com/api/packages/{owner}/maven</url>
  </repository>
</distributionManagement>
```

**Configure authentication in `~/.m2/settings.xml`:**

```xml
<servers>
  <server>
    <id>gitcaddy</id>
    <username>{username}</username>
    <password>{token}</password>
  </server>
</servers>
```

#### PyPI Package API

**Configure pip:**

```bash
pip config set global.index-url https://gitcaddy.example.com/api/packages/{owner}/pypi/simple
```

**Upload with twine:**

```bash
twine upload --repository-url https://gitcaddy.example.com/api/packages/{owner}/pypi dist/*
```

### Actions APIs

#### List Workflow Runs

```http
GET /api/v1/repos/{owner}/{repo}/actions/runs
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `status` | string | No | Filter by status: `success`, `failure`, `waiting`, `running` |
| `event` | string | No | Filter by event: `push`, `pull_request`, `schedule` |
| `actor` | string | No | Filter by actor username |
| `branch` | string | No | Filter by branch |
| `page` | integer | No | Page number |
| `limit` | integer | No | Page size |

**Response:**

```json
{
  "total_count": 10,
  "workflow_runs": [
    {
      "id": 1,
      "name": "CI",
      "head_branch": "main",
      "head_sha": "abc123def456",
      "run_number": 42,
      "event": "push",
      "status": "completed",
      "conclusion": "success",
      "workflow_id": 1,
      "url": "https://gitcaddy.example.com/api/v1/repos/username/my-repo/actions/runs/1",
      "html_url": "https://gitcaddy.example.com/username/my-repo/actions/runs/1",
      "created_at": "2024-01-20T10:00:00Z",
      "updated_at": "2024-01-20T10:05:00Z",
      "run_started_at": "2024-01-20T10:00:30Z"
    }
  ]
}
```

#### Get Workflow Run

```http
GET /api/v1/repos/{owner}/{repo}/actions/runs/{run_id}
```

#### Cancel Workflow Run

```http
POST /api/v1/repos/{owner}/{repo}/actions/runs/{run_id}/cancel
```

#### Rerun Workflow

```http
POST /api/v1/repos/{owner}/{repo}/actions/runs/{run_id}/rerun
```

#### List Workflow Jobs

```http
GET /api/v1/repos/{owner}/{repo}/actions/runs/{run_id}/jobs
```

**Response:**

```json
{
  "total_count": 3,
  "jobs": [
    {
      "id": 1,
      "run_id": 1,
      "name": "build",
      "status": "completed",
      "conclusion": "success",
      "started_at": "2024-01-20T10:00:30Z",
      "completed_at": "2024-01-20T10:03:00Z",
      "url": "https://gitcaddy.example.com/api/v1/repos/username/my-repo/actions/jobs/1",
      "html_url": "https://gitcaddy.example.com/username/my-repo/actions/runs/1/jobs/1"
    }
  ]
}
```

#### Get Job Logs

```http
GET /api/v1/repos/{owner}/{repo}/actions/jobs/{job_id}/logs
```

**Response:** Plain text log output

#### List Repository Secrets

```http
GET /api/v1/repos/{owner}/{repo}/actions/secrets
```

**Response:**

```json
{
  "total_count": 2,
  "secrets": [
    {
      "name": "API_KEY",
      "created_at": "2024-01-15T10:00:00Z",
      "updated_at": "2024-01-15T10:00:00Z"
    }
  ]
}
```

#### Create/Update Secret

```http
PUT /api/v1/repos/{owner}/{repo}/actions/secrets/{secret_name}
```

**Request Body:**

```json
{
  "value": "secret_value"
}
```

#### Delete Secret

```http
DELETE /api/v1/repos/{owner}/{repo}/actions/secrets/{secret_name}
```

#### List Runners

```http
GET /api/v1/repos/{owner}/{repo}/actions/runners
```

**Response:**

```json
{
  "total_count": 1,
  "runners": [
    {
      "id": 1,
      "name": "runner-1",
      "os": "linux",
      "status": "online",
      "busy": false,
      "labels": [
        {
          "id": 1,
          "name": "ubuntu-latest",
          "type": "read-only"
        }
      ]
    }
  ]
}
```

#### Register Runner

```http
POST /api/v1/repos/{owner}/{repo}/actions/runners/registration-token
```

**Response:**

```json
{
  "token": "RUNNER_REGISTRATION_TOKEN",
  "expires_at": "2024-01-20T11:00:00Z"
}
```

### Vault APIs

Enterprise-grade secrets management with encryption and audit logging.

#### List Vault Secrets

```http
GET /api/v1/repos/{owner}/{repo}/vault/secrets
```

**Response:**

```json
{
  "total_count": 5,
  "secrets": [
    {
      "id": "secret-id-123",
      "name": "database_password",
      "description": "Production database password",
      "version": 3,
      "created_at": "2024-01-01T00:00:00Z",
      "updated_at": "2024-01-15T10:00:00Z",
      "created_by": {
        "id": 1,
        "login": "admin"
      },
      "last_accessed_at": "2024-01-20T09:30:00Z",
      "access_count": 42
    }
  ]
}
```

#### Create Vault Secret

```http
POST /api/v1/repos/{owner}/{repo}/vault/secrets
```

**Request Body:**

```json
{
  "name": "api_key",
  "description": "External API key",
  "value": "secret_value_encrypted",
  "metadata": {
    "environment": "production",
    "service": "payment-gateway"
  }
}
```

**Response:** `201 Created`

```json
{
  "id": "secret-id-456",
  "name": "api_key",
  "version": 1,
  "created_at": "2024-01-20T10:00:00Z"
}
```

#### Get Vault Secret

```http
GET /api/v1/repos/{owner}/{repo}/vault/secrets/{secret_id}
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `version` | integer | No | Specific version (default: latest) |

**Response:**

```json
{
  "id": "secret-id-456",
  "name": "api_key",
  "description": "External API key",
  "value": "decrypted_secret_value",
  "version": 1,
  "created_at": "2024-01-20T10:00:00Z",
  "metadata": {
    "environment": "production",
    "service": "payment-gateway"
  }
}
```

#### Update Vault Secret

```http
PUT /api/v1/repos/{owner}/{repo}/vault/secrets/{secret_id}
```

**Request Body:**

```json
{
  "value": "new_secret_value",
  "description": "Updated description"
}
```

**Response:**

```json
{
  "id": "secret-id-456",
  "version": 2,
  "updated_at": "2024-01-20T11:00:00Z"
}
```

#### Delete Vault Secret

```http
DELETE /api/v1/repos/{owner}/{repo}/vault/secrets/{secret_id}
```

**Response:** `204 No Content`

#### List Secret Versions

```http
GET /api/v1/repos/{owner}/{repo}/vault/secrets/{secret_id}/versions
```

**Response:**

```json
{
  "total_count": 3,
  "versions": [
    {
      "version": 3,
      "created_at": "2024-01-20T10:00:00Z",
      "created_by": {
        "id": 1,
        "login": "admin"
      }
    },
    {
      "version": 2,
      "created_at": "2024-01-15T10:00:00Z",
      "created_by": {
        "id": 1,
        "login": "admin"
      }
    }
  ]
}
```

#### Get Vault Audit Log

```http
GET /api/v1/repos/{owner}/{repo}/vault/audit
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `secret_id` | string | No | Filter by secret ID |
| `action` | string | No | Filter by action: `create`, `read`, `update`, `delete` |
| `user` | string | No | Filter by username |
| `since` | string | No | Start date (ISO 8601) |
| `before` | string | No | End date (ISO 8601) |
| `page` | integer | No | Page number |
| `limit` | integer | No | Page size |

**Response:**

```json
{
  "total_count": 100,
  "entries": [
    {
      "id": "audit-log-123",
      "secret_id": "secret-id-456",
      "secret_name": "api_key",
      "action": "read",
      "user": {
        "id": 2,
        "login": "developer"
      },
      "ip_address": "192.168.1.100",
      "user_agent": "GitCaddy-Actions/1.0",
      "timestamp": "2024-01-20T10:30:00Z",
      "success": true
    }
  ]
}
```

#### Generate CI/CD Token

```http
POST /api/v1/repos/{owner}/{repo}/vault/tokens
```

**Request Body:**

```json
{
  "name": "ci-token",
  "secret_ids": ["secret-id-456", "secret-id-789"],
  "expires_at": "2024-12-31T23:59:59Z",
  "read_only": true
}
```

**Response:**

```json
{
  "token": "vault_token_abc123def456",
  "expires_at": "2024-12-31T23:59:59Z"
}
```

## Git Protocol

GitCaddy supports standard Git protocols for repository operations.

### HTTP(S) Protocol

**Clone:**

```bash
git clone https://gitcaddy.example.com/username/repo.git
```

**Authentication:**

Use personal access token as password:

```bash
git clone https://username:token@gitcaddy.example.com/username/repo.git
```

Or configure credential helper:

```bash
git config --global credential.helper store
git clone https://gitcaddy.example.com/username/repo.git
# Enter username and token when prompted
```

### SSH Protocol

**Clone:**

```bash
git clone git@gitcaddy.example.com:username/repo.git
```

**Setup:**

1. Generate SSH key:

```bash
ssh-keygen -t ed25519 -C "your_email@example.com"
```

2. Add public key to GitCaddy:
   - User Settings → SSH/GPG Keys → Add Key
   - Paste contents of `~/.ssh/id_ed25519.pub`

3. Configure SSH:

```bash
# ~/.ssh/config
Host gitcaddy.example.com
  User git
  IdentityFile ~/.ssh/id_ed25519
```

### Git LFS

**Enable LFS for repository:**

```bash
git lfs install
git lfs track "*.psd"
git add .gitattributes
git commit -m "Enable LFS for PSD files"
```

**Configuration:**

GitCaddy automatically handles LFS objects when pushing/pulling.

**LFS API Endpoints:**

```http
POST /api/v1/repos/{owner}/{repo}/lfs/objects/batch
```

**Request Body:**

```json
{
  "operation": "upload",
  "transfers": ["basic"],
  "objects": [
    {
      "oid": "abc123def456...",
      "size": 1048576
    }
  ]
}
```

## WebSocket APIs

GitCaddy uses WebSocket connections for real-time features.

### EventSource (Server-Sent Events)

**Time Tracking Updates:**

```javascript
const eventSource = new EventSource('/user/events');

eventSource.addEventListener('timetrack', (event) => {
  const data = JSON.parse(event.data);
  console.log('Time tracking update:', data);
  // Update stopwatch UI
});

eventSource.addEventListener('error', (error) => {
  console.error('EventSource error:', error);
});
```

**Notification Updates:**

```javascript
const notificationSource = new EventSource('/api/v1/notifications/events');

notificationSource.addEventListener('notification', (event) => {
  const notification = JSON.parse(event.data);
  console.log('New notification:', notification);
  // Display notification toast
});
```

### SharedWorker

**Shared stopwatch across tabs:**

```javascript
// Initialize shared worker for time tracking
const worker = new SharedWorker('/assets/js/stopwatch-worker.js');

worker.port.start();

worker.port.postMessage({
  action: 'start',
  issueId: 123
});

worker.port.onmessage = (event) => {
  const { action, elapsed } = event.data;
  if (action === 'tick') {
    updateStopwatchDisplay(elapsed);
  }
};
```

## Frontend JavaScript APIs

GitCaddy provides modular JavaScript APIs for frontend functionality.

### Core Utilities

#### DOM Manipulation

```javascript
import {$, $$} from './modules/utils/dom.js';

// Select single element
const button = $('#submit-button');

// Select multiple elements
const listItems = $$('.list-item');

// Event delegation
$(document).on('click', '.dynamic-button', (event) => {
  console.log('Button clicked:', event.target);
});
```

#### HTML Escaping

```javascript
import {htmlEscape} from './modules/utils/html.js';

const userInput = '<script>alert("xss")</script>';
const safe = htmlEscape(userInput);
// Result: &lt;script&gt;alert(&quot;xss&quot;)&lt;/script&gt;
```

#### Date/Time Utilities

```javascript
import {parseISODateTime, formatDatetime} from './modules/utils/time.js';

const date = parseISODateTime('2024-01-20T10:00:00Z');
const formatted = formatDatetime(date, 'short'); // "Jan 20, 2024"
```

#### Color Utilities

```javascript
import {useLightTextOnBackground} from './modules/utils/color.js';

const bgColor = '#ff0000';
const useLight = useLightTextOnBackground(bgColor);
// Returns true if light text should be used on this background
```

#### Glob Pattern Matching

```javascript
import {matchGlobPattern} from './modules/utils/glob.js';

const pattern = '*.js';
const filename = 'script.js';
const matches = matchGlobPattern(pattern, filename); // true
```

### DOM Manipulation

#### Creating Elements

```javascript
import {createElementFromHTML} from './modules/utils/dom.js';

const html = '<div class="alert">Message</div>';
const element = createElementFromHTML(html);
document.body.appendChild(element);
```

#### Toggle Classes

```javascript
import {toggleClass} from './modules/utils/dom.js';

const element = $('#my-element');
toggleClass(element, 'active', true); // Add class
toggleClass(element, 'hidden', false); // Remove class
```

### Web Components

#### Absolute Date Component

```html
<absolute-date date="2024-01-20T10:00:00Z" format="short"></absolute-date>
```

**JavaScript API:**

```javascript
const dateElement = document.querySelector('absolute-date');
dateElement.setAttribute('date', '2024-01-21T12:00:00Z');
```

#### Origin URL Component

```html
<origin-url data-url="https://example.com/page"></origin-url>
```

Displays sanitized origin URL with proper formatting.

#### Overflow Menu Component

```html
<overflow-menu>
  <button class="item">Action 1</button>
  <button class="item">Action 2</button>
  <button class="item">Action 3</button>
</overflow-menu>
```

Automatically creates overflow menu for items that don't fit.

### Vue Components

#### File Tree Component

```javascript
import {createApp} from 'vue';
import FileTreeView from './modules/features/repo-file-tree.js';

const app = createApp({
  components: {
    FileTreeView
  },
  data() {
    return {
      files: [
        {name: 'src', type: 'dir', children: [...]},
        {name: 'README.md', type: 'file'}
      ]
    };
  }
});

app.mount('#file-tree');
```

**Template:**

```html
<file-tree-view :files="files" @file-click="handleFileClick"></file-tree-view>
```

#### Context Popup Component

```javascript
import {createContextPopup} from './modules/features/context-popup.js';

const popup = createContextPopup({
  items: [
    {label: 'Edit', action: () => console.log('Edit')},
    {label: 'Delete', action: () => console.log('Delete')}
  ],
  position: {x: event.clientX, y: event.clientY}
});

popup.show();
```

### Tooltip System

```javascript
import {createTippy} from './modules/features/tippy.js';

// Simple tooltip
createTippy('#my-element', {
  content: 'Tooltip text'
});

// HTML content
createTippy('.help-icon', {
  content: '<strong>Help:</strong> This is help text',
  allowHTML: true
});

// Interactive tooltip
createTippy('.interactive', {
  content: document.querySelector('#tooltip-content'),
  interactive: true,
  trigger: 'click'
});
```

### Toast Notifications

```javascript
import {showToast} from './modules/features/toast.js';

// Success toast
showToast('Operation completed successfully', 'success');

// Error toast
showToast('An error occurred', 'error');

// Warning toast
showToast('Please review your changes', 'warning');

// Info toast
showToast('New version available', 'info');

// Custom duration
showToast('Auto-closing in 5 seconds', 'info', 5000);
```

### Markdown Rendering

```javascript
import {renderMarkdown} from './modules/features/markup.js';

const markdown = '# Heading\n\nParagraph with **bold** text.';
const html = await renderMarkdown(markdown);
document.querySelector('#content').innerHTML = html;
```

**Features:**
- GitHub-flavored markdown
- Syntax highlighting
- Math rendering (KaTeX)
- Mermaid diagrams
- Task lists
- Emoji support

### Mermaid Diagrams

```javascript
import {renderMermaid} from './modules/features/mermaid.js';

const diagramCode = `
graph TD
  A[Start] --> B[Process]
  B --> C[End]
`;

await renderMermaid('#diagram-container', diagramCode);
```

### SortableJS Integration

```javascript
import Sortable from 'sortablejs';

const projectBoard = document.querySelector('#project-board');

Sortable.create(projectBoard, {
  animation: 150,
  handle: '.card-handle',
  onEnd: (event) => {
    const cardId = event.item.dataset.cardId;
    const newPosition = event.newIndex;
    
    // Update card position via API
    fetch(`/api/v1/projects/cards/${cardId}/move`, {
      method: 'POST',
      headers: {'Content-Type': 'application/json'},
      body: JSON.stringify({position: newPosition})
    });
  }
});
```

## Error Codes

GitCaddy uses standard HTTP status codes with detailed error responses.

### HTTP Status Codes

| Code | Status | Description |
|------|--------|-------------|
| 200 | OK | Request succeeded |
| 201 | Created | Resource created successfully |
| 204 | No Content | Request succeeded with no response body |
| 400 | Bad Request | Invalid request parameters |
| 401 | Unauthorized | Authentication required |
| 403 | Forbidden | Insufficient permissions |
| 404 | Not Found | Resource not found |
| 409 | Conflict | Resource conflict (e.g., duplicate name) |
| 422 | Unprocessable Entity | Validation error |
| 429 | Too Many Requests | Rate limit exceeded |
| 500 | Internal Server Error | Server error |
| 503 | Service Unavailable | Service temporarily unavailable |

### Error Response Format

```json
{
  "message": "Human-readable error message",
  "errors": [
    {
      "field": "email",
      "message": "Email is required"
    }
  ],
  "url": "https://docs.gitcaddy.example.com/api/errors/validation"
}
```

### Common Error Codes

**Authentication Errors:**

```json
{
  "message": "Unauthorized: Invalid or expired token",
  "code": "INVALID_TOKEN"
}
```

**Validation Errors:**

```json
{
  "message": "Validation failed",
  "errors": [
    {
      "field": "name",
      "message": "Repository name already exists"
    },
    {
      "field": "description",
      "message": "Description must be less than 500 characters"
    }
  ]
}
```

**Permission Errors:**

```json
{
  "message": "Forbidden: You do not have permission to perform this action",
  "required_permission": "admin"
}
```

**Rate Limit Errors:**

```json
{
  "message": "API rate limit exceeded",
  "limit": 5000,
  "remaining": 0,
  "reset": "2024-01-20T11:00:00Z"
}
```

**Resource Not Found:**

```json
{
  "message": "Repository not found",
  "resource": "repository",
  "id": "username/nonexistent-repo"
}
```

## Rate Limiting

GitCaddy implements rate limiting to prevent abuse.

### Rate Limit Headers

All API responses include rate limit information:

```http
X-RateLimit-Limit: 5000
X-RateLimit-Remaining: 4999
X-RateLimit-Reset: 1705750800
```

| Header | Description |
|--------|-------------|
| `X-RateLimit-Limit` | Maximum requests per hour |
| `X-RateLimit-Remaining` | Remaining requests in current window |
| `X-RateLimit-Reset` | Unix timestamp when limit resets |

### Rate Limits by Authentication

| Authentication | Requests/Hour |
|----------------|---------------|
| Unauthenticated | 60 |
| Authenticated (PAT) | 5,000 |
| OAuth Application | 5,000 |
| Enterprise License | 15,000 |

### Handling Rate Limits

```javascript
async function makeAPIRequest(url) {
  const response = await fetch(url, {
    headers: {
      'Authorization': 'token YOUR_TOKEN'
    }
  });
  
  const remaining = response.headers.get('X-RateLimit-Remaining');
  const reset = response.headers.get('X-RateLimit-Reset');
  
  if (response.status === 429) {
    const resetDate = new Date(reset * 1000);
    const waitTime = resetDate - new Date();
    
    console.log(`Rate limited. Retry after ${waitTime}ms`);
    await new Promise(resolve => setTimeout(resolve, waitTime));
    return makeAPIRequest(url); // Retry
  }
  
  if (remaining < 100) {
    console.warn(`Low rate limit: ${remaining} requests remaining`);
  }
  
  return response.json();
}
```

## Webhooks

GitCaddy can send HTTP POST requests to external URLs when events occur.

### Creating Webhooks

**Via API:**

```http
POST /api/v1/repos/{owner}/{repo}/hooks
```

**Request Body:**

```json
{
  "type": "gitea",
  "config": {
    "url": "https://example.com/webhook",
    "content_type": "json",
    "secret": "webhook_secret"
  },
  "events": [
    "push",
    "pull_request",
    "issues",
    "issue_comment",
    "release"
  ],
  "active": true
}
```

**Parameters:**

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `type` | string | Yes | Webhook type: `gitea`, `gogs`, `slack`, `discord` |
| `config.url` | string | Yes | Webhook URL |
| `config.content_type` | string | No | Content type: `json`, `form` |
| `config.secret` | string | No | Secret for signature verification |
| `events` | array | Yes | Events to trigger webhook |
| `active` | boolean | No | Enable webhook (default: true) |

### Webhook Events

| Event | Description |
|-------|-------------|
| `push` | Git push to repository |
| `create` | Branch or tag created |
| `delete` | Branch or tag deleted |
| `fork` | Repository forked |
| `issues` | Issue opened, closed, edited |
| `issue_comment` | Comment on issue |
| `pull_request` | PR opened, closed, merged, edited |
| `pull_request_review` | PR review submitted |
| `pull_request_review_comment` | Comment on PR review |
| `release` | Release published |
| `repository` | Repository created, deleted |
| `wiki` | Wiki page created, edited |

### Webhook Payload

**Push Event:**

```json
{
  "ref": "refs/heads/main",
  "before": "abc123def456",
  "after": "def456ghi789",
  "compare_url": "https://gitcaddy.example.com/username/repo/compare/abc123...def456",
  "commits": [
    {
      "id": "def456ghi789",
      "message": "Fix bug in authentication",
      "url": "https://gitcaddy.example.com/username/repo/commit/def456ghi789",
      "author": {
        "name": "Developer",
        "email": "dev@example.com",
        "username": "developer"
      },
      "committer": {
        "name": "Developer",
        "email": "dev@example.com",
        "username": "developer"
      },
      "timestamp": "2024-01-20T10:00:00Z",
      "added": ["new-file.js"],
      "removed": [],
      "modified": ["existing-file.js"]
    }
  ],
  "repository": {
    "id": 1,
    "name": "repo",
    "full_name": "username/repo",
    "html_url": "https://gitcaddy.example.com/username/repo",
    "private": false,
    "owner": {
      "id": 1,
      "login": "username",
      "full_name": "User Name"
    }
  },
  "pusher": {
    "id": 1,
    "login": "username",
    "full_name": "User Name"
  },
  "sender": {
    "id": 1,
    "login": "username",
    "full_name": "User Name"
  }
}
```

**Pull Request Event:**

```json
{
  "action": "opened",
  "number": 1,
  "pull_request": {
    "id": 1,
    "number": 1,
    "user": {
      "id": 2,
      "login": "contributor"
    },
    "title": "Add new feature",
    "body": "Description of changes",
    "state": "open",
    "html_url": "https://gitcaddy.example.com/username/repo/pulls/1",
    "diff_url": "https://gitcaddy.example.com/username/repo/pulls/1.diff",
    "patch_url": "https://gitcaddy.example.com/username/repo/pulls/1.patch",
    "merged": false,
    "mergeable": true,
    "base": {
      "label": "main",
      "ref": "main",
      "sha": "abc123"
    },
    "head": {
      "label": "contributor:feature",
      "ref": "feature",
      "sha": "def456"
    },
    "created_at": "2024-01-20T10:00:00Z",
    "updated_at": "2024-01-20T10:00:00Z"
  },
  "repository": {
    "id": 1,
    "name": "repo",
    "full_name": "username/repo"
  },
  "sender": {
    "id": 2,
    "login": "contributor"
  }
}
```

### Webhook Security

**Signature Verification:**

GitCaddy signs webhook payloads with HMAC-SHA256 using the configured secret.

```http
X-Gitea-Signature: sha256=abc123def456...
```

**Verification Example (Node.js):**

```javascript
const crypto = require('crypto');

function verifyWebhook(payload, signature, secret) {
  const hmac = crypto.createHmac('sha256', secret);
  hmac.update(payload);
  const calculatedSignature = 'sha256=' + hmac.digest('hex');
  
  return crypto.timingSafeEqual(
    Buffer.from(signature),
    Buffer.from(calculatedSignature)
  );
}

// Express middleware
app.post('/webhook', (req, res) => {
  const signature = req.headers['x-gitea-signature'];
  const payload = JSON.stringify(req.body);
  
  if (!verifyWebhook(payload, signature, process.env.WEBHOOK_SECRET)) {
    return res.status(401).send('Invalid signature');
  }
  
  // Process webhook
  res.status(200).send('OK');
});
```

### Testing Webhooks

**Manual Test:**

```bash
curl -X POST https://gitcaddy.example.com/api/v1/repos/username/repo/hooks/1/test \
  -H "Authorization: token YOUR_TOKEN"
```

**View Webhook Deliveries:**

```http
GET /api/v1/repos/{owner}/{repo}/hooks/{id}/deliveries
```

**Response:**

```json
[
  {
    "id": 1,
    "uuid": "abc-123-def-456",
    "url": "https://example.com/webhook",
    "request": {
      "headers": {
        "Content-Type": "application/json",
        "X-Gitea-Event": "push",
        "X-Gitea-Signature": "sha256=..."
      },
      "body": "{...}"
    },
    "response": {
      "status": 200,
      "headers": {},
      "body": "OK"
    },
    "delivered_at": "2024-01-20T10:00:00Z",
    "duration": 0.123
  }
]
```

## Code Examples

### Complete Repository Workflow

```javascript
// Create repository
async function createRepository(name, description) {
  const response = await fetch('https://gitcaddy.example.com/api/v1/user/repos', {
    method: 'POST',
    headers: {
      'Authorization': 'token YOUR_TOKEN',
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({
      name: name,
      description: description,
      private: false,
      auto_init: true,
      license: 'MIT'
    })
  });
  
  return response.json();
}

// Add file to repository
async function addFile(owner, repo, path, content, message) {
  const encodedContent = btoa(content);
  
  const response = await fetch(
    `https://gitcaddy.example.com/api/v1/repos/${owner}/${repo}/contents/${path}`,
    {
      method: 'POST',
      headers: {
        'Authorization': 'token YOUR_TOKEN',
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({
        content: encodedContent,
        message: message,
        branch: 'main'
      })
    }
  );
  
  return response.json();
}

// Create pull request
async function createPullRequest(owner, repo, title, head, base) {
  const response = await fetch(
    `https://gitcaddy.example.com/api/v1/repos/${owner}/${repo}/pulls`,
    {
      method: 'POST',
      headers: {
        'Authorization': 'token YOUR_TOKEN',
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({
        title: title,
        head: head,
        base: base,
        body: 'Please review these changes'
      })
    }
  );
  
  return response.json();
}

// Usage
(async () => {
  const repo = await createRepository('my-project', 'My awesome project');
  console.log('Repository created:', repo.html_url);
  
  const file = await addFile(
    'username',
    'my-project',
    'src/index.js',
    'console.log("Hello World");',
    'Add index.js'
  );
  console.log('File added:', file.commit.sha);
  
  const pr = await createPullRequest(
    'username',
    'my-project',
    'Add feature',
    'feature-branch',
    'main'
  );
  console.log('Pull request created:', pr.html_url);
})();
```

### Issue Management

```python
import requests

class GitCaddyClient:
    def __init__(self, base_url, token):
        self.base_url = base_url
        self.headers = {
            'Authorization': f'token {token}',
            'Content-Type': 'application/json'
        }
    
    def create_issue(self, owner, repo, title, body, labels=None):
        url = f'{self.base_url}/api/v1/repos/{owner}/{repo}/issues'
        data = {
            'title': title,
            'body': body
        }
        if labels:
            data['labels'] = labels
        
        response = requests.post(url, json=data, headers=self.headers)
        return response.json()
    
    def add_comment(self, owner, repo, issue_number, comment):
        url = f'{self.base_url}/api/v1/repos/{owner}/{repo}/issues/{issue_number}/comments'
        data = {'body': comment}
        
        response = requests.post(url, json=data, headers=self.headers)
        return response.json()
    
    def close_issue(self, owner, repo, issue_number):
        url = f'{self.base_url}/api/v1/repos/{owner}/{repo}/issues/{issue_number}'
        data = {'state': 'closed'}
        
        response = requests.patch(url, json=data, headers=self.headers)
        return response.json()
    
    def track_time(self, owner, repo, issue_number, seconds):
        url = f'{self.base_url}/api/v1/repos/{owner}/{repo}/issues/{issue_number}/times'
        data = {'time': seconds}
        
        response = requests.post(url, json=data, headers=self.headers)
        return response.json()

# Usage
client = GitCaddyClient('https://gitcaddy.example.com', 'YOUR_TOKEN')

# Create issue
issue = client.create_issue(
    'username',
    'my-repo',
    'Bug: Login not working',
    'Users cannot log in with correct credentials',
    labels=[1, 2]  # bug, high-priority
)
print(f'Issue created: #{issue["number"]}')

# Add comment
comment = client.add_comment(
    'username',
    'my-repo',
    issue['number'],
    'Investigating the issue...'
)

# Track time (2 hours)
time_entry = client.track_time('username', 'my-repo', issue['number'], 7200)
print(f'Tracked {time_entry["time"]}s')

# Close issue
closed = client.close_issue('username', 'my-repo', issue['number'])
print(f'Issue closed: {closed["state"]}')
```

### CI/CD Integration

```yaml
# .gitcaddy/workflows/ci.yml
name: CI

on:
  push:
    branches: [main, develop]
  pull_request:
    branches: [main]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      
      - name: Setup Node.js
        uses: actions/setup-node@v3
        with:
          node-version: '18'
      
      - name: Install dependencies
        run: npm ci
      
      - name: Run tests
        run: npm test
      
      - name: Get secrets from Vault
        id: vault
        uses: actions/vault-secrets@v1
        with:
          secrets: |
            database_password
            api_key
      
      - name: Deploy
        if: github.ref == 'refs/heads/main'
        run: |
          echo "Deploying with API key: ${{ steps.vault.outputs.api_key }}"
          npm run deploy
        env:
          DATABASE_PASSWORD: ${{ steps.vault.outputs.database_password }}
          API_KEY: ${{ steps.vault.outputs.api_key }}
```

### Webhook Handler

```go
package main

import (
    "crypto/hmac"
    "crypto/sha256"
    "encoding/hex"
    "encoding/json"
    "fmt"
    "io/ioutil"
    "log"
    "net/http"
)

type PushEvent struct {
    Ref        string `json:"ref"`
    Before     string `json:"before"`
    After      string `json:"after"`
    Repository struct {
        Name     string `json:"name"`
        FullName string `json:"full_name"`
    } `json:"repository"`
    Pusher struct {
        Login string `json:"login"`
    } `json:"pusher"`
    Commits []struct {
        ID      string `json:"id"`
        Message string `json:"message"`
        Author  struct {
            Name  string `json:"name"`
            Email string `json:"email"`
        } `json:"author"`
    } `json:"commits"`
}

func verifySignature(payload []byte, signature, secret string) bool {
    mac := hmac.New(sha256.New, []byte(secret))
    mac.Write(payload)
    expectedMAC := "sha256=" + hex.EncodeToString(mac.Sum(nil))
    return hmac.Equal([]byte(signature), []byte(expectedMAC))
}

func handleWebhook(w http.ResponseWriter, r *http.Request) {
    payload, err := ioutil.ReadAll(r.Body)
    if err != nil {
        http.Error(w, "Error reading request body", http.StatusBadRequest)
        return
    }
    defer r.Body.Close()
    
    signature := r.Header.Get("X-Gitea-Signature")
    if !verifySignature(payload, signature, "webhook_secret") {
        http.Error(w, "Invalid signature", http.StatusUnauthorized)
        return
    }
    
    event := r.Header.Get("X-Gitea-Event")
    
    switch event {
    case "push":
        var pushEvent PushEvent
        if err := json.Unmarshal(payload, &pushEvent); err != nil {
            http.Error(w, "Error parsing JSON", http.StatusBadRequest)
            return
        }
        
        log.Printf("Push to %s by %s", pushEvent.Repository.FullName, pushEvent.Pusher.Login)
        log.Printf("Commits: %d", len(pushEvent.Commits))
        
        for _, commit := range pushEvent.Commits {
            log.Printf("  - %s: %s", commit.ID[:7], commit.Message)
        }
        
    case "pull_request":
        log.Printf("Pull request event received")
        
    default:
        log.Printf("Unknown event: %s", event)
    }
    
    w.WriteHeader(http.StatusOK)
    fmt.Fprintf(w, "Webhook processed")
}

func main() {
    http.HandleFunc("/webhook", handleWebhook)
    log.Println("Webhook server listening on :8080")
    log.Fatal(http.ListenAndServe(":8080", nil))
}
```

### Package Publishing

```bash
#!/bin/bash
# publish-npm.sh - Publish npm package to GitCaddy registry

GITCADDY_URL="https://gitcaddy.example.com"
OWNER="username"
TOKEN="YOUR_TOKEN"

# Configure npm
npm config set registry "${GITCADDY_URL}/api/packages/${OWNER}/npm/"
npm config set "//${GITCADDY_URL#https://}/api/packages/${OWNER}/npm/:_authToken" "${TOKEN}"

# Update version
npm version patch

# Publish
npm publish

echo "Package published to GitCaddy registry"
```

```dockerfile
# Dockerfile - Build and push Docker image to GitCaddy registry
FROM node:18-alpine

WORKDIR /app

COPY package*.json ./
RUN npm ci --production

COPY . .

EXPOSE 3000

CMD ["node", "server.js"]

# Build and push:
# docker build -t gitcaddy.example.com/username/myapp:latest .
# docker login gitcaddy.example.com
# docker push gitcaddy.example.com/username/myapp:latest
```

---

For additional support and documentation, visit the [GitCaddy Documentation](https://docs.gitcaddy.example.com) or join the community forum.