# API Reference

Base URL: `http://localhost:3000/api`. Auth: `Authorization: Bearer <jwt>`.

## Auth

### POST /auth/register
```json
{ "email": "a@example.com", "name": "Ada", "password": "secret123" }
```
-> `201 { user, token }`. Errors: `400` validation, `409` email taken.

### POST /auth/login
```json
{ "email": "a@example.com", "password": "secret123" }
```
-> `200 { user, token }`. Errors: `401` invalid credentials.

### GET /auth/me
-> `200 { user }`.

```bash
curl -X POST localhost:3000/api/auth/register \
  -H 'Content-Type: application/json' \
  -d '{"email":"a@example.com","name":"Ada","password":"secret123"}'
```

## Workspaces

| Method | Path | Role | Description |
|--------|------|------|-------------|
| GET | `/workspaces` | member | List my workspaces |
| POST | `/workspaces` | any logged-in | Create workspace (caller becomes owner) |
| GET | `/workspaces/:id` | viewer+ | Get workspace |
| PATCH | `/workspaces/:id` | admin+ | Rename |
| DELETE | `/workspaces/:id` | owner | Delete |
| GET | `/workspaces/:id/members` | viewer+ | List members |
| POST | `/workspaces/:id/members` | admin+ | Invite `{email, role}` (role: admin/member/viewer) |
| PATCH | `/workspaces/:id/members/:userId` | admin+ | Change role |
| DELETE | `/workspaces/:id/members/:userId` | admin+ | Remove member |

Roles rank: `viewer < member < admin < owner`. Viewers read only.

## Pages

| Method | Path | Description |
|--------|------|-------------|
| GET | `/pages/by-workspace/:workspaceId` | List pages (flat, client builds tree) |
| POST | `/pages` | Create `{workspace_id, parent_id?, title?}` (member+) |
| GET | `/pages/:id` | Get page + comments |
| PATCH | `/pages/:id` | Update title/icon/cover/content/position/parent/archive (member+) |
| DELETE | `/pages/:id` | Delete incl. children via FK cascade |
| GET | `/pages/search/query?q=&workspace_id=` | Title search |
| POST | `/pages/:id/comments` | Add comment `{body}` |
| DELETE | `/pages/:pageId/comments/:commentId` | Delete (author or admin+) |

Content fields: `content_json` (TipTap JSON), `content_html` (rendered HTML).

## Users

- `GET /users/search?email=` — lookup for invites (auth required).
- `GET /users/discover?q=` — fuzzy discovery (min 2 chars, max 10 hits, no hashes).
- `PATCH /users/me` — profile/appearance (`name, email, avatar, locale, theme, bg_image, bg_blur`).
- `PATCH /users/me/password` — `{ currentPassword, newPassword }`.

## Books

- `GET /books/by-workspace/:workspaceId`, `POST /books {workspace_id,title?,icon?}`
- `PATCH /books/:id`, `DELETE /books/:id` (pages inside cascade).

## Tasks

- `GET /tasks/by-workspace/:workspaceId?status=&from=&to=` (calendar range on `due_at`)
- `POST /tasks {workspace_id, book_id?, page_id?, title, status?, priority?, due_at?}`
- `PATCH /tasks/:id`, `DELETE /tasks/:id`

## Time tracking

- `GET /time/by-workspace/:workspaceId` → `{ entries, open }`
- `POST /time/start {workspace_id, book_id?, page_id?, description?}` (409 if running)
- `POST /time/stop {workspace_id}` → sets `ended_at` + `duration_seconds`
- `PATCH /time/:id`, `DELETE /time/:id` (own or admin+)

## Admin (requires `is_admin`)

- `GET /admin/overview` → counts + recent users
- `GET /admin/users`, `PATCH /admin/users/:id {is_admin}`, `DELETE /admin/users/:id`

## Health

- `GET /health` -> `{ok:true, db:'up'}` or `503 {ok:false, db:'down'}`.

## Real-time (Socket.IO)

Connect: `io(url, { auth: { token } })`.

- `page:join { pageId }` — join room; server checks workspace membership.
- `page:edit { pageId, content_json, content_html }` — persist + broadcast to others.
  Viewers are ignored server-side.
- `typing { pageId, name }` — broadcast typing indicator.
- Server events: `page:updated { page, from? }`, `page:deleted { id }`,
  `comment:added { comment }`, `presence:update { members: [{userId,email,name}] }`,
  `error:message { error }`.