# NtR SoundCloud Fetcher -- API Reference

Base URL: `http://127.0.0.1:8000` (configurable via `NTR_HOST` / `NTR_PORT`)

---

## Public Endpoints

### `GET /health`

Service health check.

**Response**

```json
{
  "status": "ok",
  "poller_alive": true,
  "last_fetch": "2026-03-12T02:00:00+00:00",
  "current_week_track_count": 9
}
```

| Field | Type | Description |
|-------|------|-------------|
| `status` | string | Always `"ok"` |
| `poller_alive` | boolean | Whether the background poller is running |
| `last_fetch` | string \| null | ISO 8601 timestamp of last successful poll, or `null` if never |
| `current_week_track_count` | integer | Number of tracks in the current week's playlist |

---

### `GET /playlist`

Returns the current week's full playlist.

**Response**

```json
{
  "show_id": 10,
  "episode_number": 530,
  "week_start": "2026-03-05T02:00:00+00:00",
  "week_end": "2026-03-12T02:00:00+00:00",
  "tracks": [
    {
      "show_id": 10,
      "track_id": 12345,
      "position": 1,
      "title": "Night Drive",
      "artist": "SomeArtist",
      "permalink_url": "https://soundcloud.com/someartist/night-drive",
      "artwork_url": "https://i1.sndcdn.com/artworks-...-large.jpg",
      "duration_ms": 245000,
      "license": "cc-by",
      "liked_at": "2026-03-06T14:23:00+00:00",
      "raw_json": "{...}"
    }
  ]
}
```

| Field | Type | Description |
|-------|------|-------------|
| `show_id` | integer | Internal database ID for this show |
| `episode_number` | integer \| null | Episode number (e.g. 530), or `null` if not assigned |
| `week_start` | string | ISO 8601 UTC timestamp -- start of the show's like window |
| `week_end` | string | ISO 8601 UTC timestamp -- end of the show's like window |
| `tracks` | array | Ordered list of tracks (see Track Object below) |

---

### `GET /playlist/{position}`

Returns a single track by its position in the current week's playlist. Positions are 1-indexed (matching IRC commands `!1`, `!2`, etc.).

**Path Parameters**

| Parameter | Type | Description |
|-----------|------|-------------|
| `position` | integer | 1-based position in the playlist |

**Response** -- a single Track Object (see below).

**Errors**

| Status | Detail |
|--------|--------|
| 404 | `"No track at position {n}"` |

---

### `GET /shows`

Lists all shows, ordered by week start date (newest first).

**Query Parameters**

| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| `limit` | integer | 20 | Max number of shows to return |
| `offset` | integer | 0 | Number of shows to skip |

**Response**

```json
[
  {
    "id": 10,
    "episode_number": 530,
    "week_start": "2026-03-05T02:00:00+00:00",
    "week_end": "2026-03-12T02:00:00+00:00",
    "created_at": "2026-03-05T03:00:00+00:00"
  }
]
```

---

### `GET /shows/by-episode/{episode_number}`

Look up a show by its episode number. This is the recommended endpoint for IRC bot integrations (e.g. `!playlist 530`).

**Path Parameters**

| Parameter | Type | Description |
|-----------|------|-------------|
| `episode_number` | integer | The episode number (e.g. 530) |

**Response**

```json
{
  "show_id": 10,
  "episode_number": 530,
  "week_start": "2026-03-05T02:00:00+00:00",
  "week_end": "2026-03-12T02:00:00+00:00",
  "tracks": [...]
}
```

**Errors**

| Status | Detail |
|--------|--------|
| 404 | `"No show with episode number {n}"` |

---

### `GET /shows/{show_id}`

Returns a specific show by internal database ID.

**Path Parameters**

| Parameter | Type | Description |
|-----------|------|-------------|
| `show_id` | integer | The show's internal database ID |

**Response**

```json
{
  "show_id": 10,
  "episode_number": 530,
  "week_start": "2026-03-05T02:00:00+00:00",
  "week_end": "2026-03-12T02:00:00+00:00",
  "tracks": [...]
}
```

**Errors**

| Status | Detail |
|--------|--------|
| 404 | `"Show not found"` |

---

## Dashboard Endpoints

These routes are only available when the dashboard is enabled (all three `NTR_WEB_*` env vars set).

### `GET /login`

Serves the login page.

### `POST /login`

Authenticates with username and password. Sets a session cookie on success, redirects to `/dashboard`.

**Form Data**

| Field | Type | Description |
|-------|------|-------------|
| `username` | string | Dashboard username |
| `password` | string | Dashboard password |

### `GET /logout`

Clears the session cookie and redirects to `/login`.

### `GET /dashboard`

Serves the playlist dashboard page. Requires a valid session cookie (redirects to `/login` if absent).

---

## Admin Endpoints

All admin endpoints require a bearer token via the `Authorization` header:

```
Authorization: Bearer <NTR_ADMIN_TOKEN>
```

Returns `401` with `"Missing or invalid token"` if the header is absent or the token doesn't match.

---

### `POST /admin/refresh`

Triggers an immediate SoundCloud fetch for the current week's show.

**Request Body** (optional)

```json
{
  "full": false
}
```

| Field | Type | Default | Description |
|-------|------|---------|-------------|
| `full` | boolean | `false` | Reserved for future use (full vs incremental refresh) |

**Response**

```json
{
  "status": "refreshed",
  "track_count": 9
}
```

---

### `POST /admin/tracks`

Manually add a track to the current week's show.

**Request Body**

```json
{
  "track_id": 12345,
  "position": 3
}
```

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `track_id` | integer | yes | SoundCloud track ID (must already exist in the `tracks` table) |
| `position` | integer | no | Insert at this position (shifts others down). Omit to append at end. |

**Response**

```json
{
  "status": "added"
}
```

---

### `DELETE /admin/tracks/{track_id}`

Remove a track from the current week's show. Remaining positions are re-compacted.

**Path Parameters**

| Parameter | Type | Description |
|-----------|------|-------------|
| `track_id` | integer | SoundCloud track ID to remove |

**Response**

```json
{
  "status": "removed"
}
```

**Errors**

| Status | Detail |
|--------|--------|
| 404 | `"Track not in current show"` |

---

### `PUT /admin/tracks/{track_id}/position`

Move a track to a new position within the current week's show.

**Path Parameters**

| Parameter | Type | Description |
|-----------|------|-------------|
| `track_id` | integer | SoundCloud track ID to move |

**Request Body**

```json
{
  "position": 1
}
```

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `position` | integer | yes | New 1-based position for the track |

**Response**

```json
{
  "status": "moved"
}
```

**Errors**

| Status | Detail |
|--------|--------|
| 404 | `"Track not in current show"` |

---

### `POST /admin/announce`

Broadcasts a track announcement to all connected WebSocket subscribers (IRC bots). The announcement is formatted as: `Now Playing: Song #N: Title by Artist - URL`.

Accepts either a bearer token OR a valid session cookie.

**Request Body**

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `show_id` | integer | yes | Show database ID |
| `position` | integer | yes | Track position in the show |

**Response**

```json
{
  "status": "announced",
  "message": "Now Playing: Song #1: Night Drive by SomeArtist - https://soundcloud.com/..."
}
```

**Errors**

| Status | Detail |
|--------|--------|
| 401 | `"Unauthorized"` |
| 404 | `"No track at position {n}"` |

---

## Track Object

Returned inside playlist and show detail responses.

| Field | Type | Description |
|-------|------|-------------|
| `show_id` | integer | The show this track belongs to |
| `track_id` | integer | SoundCloud track ID |
| `position` | integer | 1-based position in the playlist |
| `title` | string | Track title |
| `artist` | string | Uploader's SoundCloud username |
| `permalink_url` | string | Full URL to the track on SoundCloud |
| `artwork_url` | string \| null | URL to artwork image, or `null` |
| `duration_ms` | integer | Track duration in milliseconds |
| `license` | string | License string (e.g. `"cc-by"`, `"cc-by-sa"`) |
| `liked_at` | string | ISO 8601 timestamp of when the host liked the track |
| `raw_json` | string | Full SoundCloud API response for this track (JSON string) |

---

## Week Boundaries

Shows follow a weekly cadence aligned to **Wednesday 22:00 Eastern Time** (EST or EDT depending on DST). The like window for a show runs from the previous Wednesday 22:00 ET to the current Wednesday 22:00 ET.

All timestamps in API responses are UTC. The boundary shifts by 1 hour across DST transitions:

| Period | Eastern | UTC boundary |
|--------|---------|--------------|
| EST (Nov -- Mar) | Wed 22:00 | Thu 03:00 |
| EDT (Mar -- Nov) | Wed 22:00 | Thu 02:00 |

---

## WebSocket

### `WS /ws/announce`

WebSocket endpoint for receiving announce broadcasts. Used by IRC bot plugins.

**Authentication**

After connecting, send a subscribe message:

```json
{
  "type": "subscribe",
  "token": "<NTR_ADMIN_TOKEN>",
  "role": "bot",
  "client_id": "limnoria"
}
```

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `type` | string | yes | Must be `"subscribe"` |
| `token` | string | yes | `NTR_ADMIN_TOKEN` value |
| `role` | string | no | Client role, defaults to `"bot"` |
| `client_id` | string | no | Identifier for this client (e.g. `"sopel"`, `"limnoria"`) |

Invalid token closes the connection with code `4001`.

**Messages from server**

Announce broadcast:

```json
{"type": "announce", "message": "Now Playing: Song #1: Title by Artist - URL"}
```

Status update (sent on subscriber connect/disconnect):

```json
{
  "type": "status",
  "subscribers": 2,
  "clients": [
    {
      "client_id": "limnoria",
      "remote_addr": "1.2.3.4",
      "connected_at": "2026-03-12T02:00:00+00:00"
    }
  ]
}
```

| Field | Type | Description |
|-------|------|-------------|
| `subscribers` | integer | Number of connected bot clients |
| `clients` | array | List of connected bot clients with their `client_id`, `remote_addr`, and `connected_at` timestamp |

---

## Dashboard Configuration

The web dashboard is optional. Enable it by setting all three environment variables:

| Variable | Default | Description |
|----------|---------|-------------|
| `NTR_WEB_USER` | *(required)* | Dashboard login username |
| `NTR_WEB_PASSWORD` | *(required)* | Dashboard login password |
| `NTR_SECRET_KEY` | *(required)* | Secret key for session cookie signing |

If any of these are absent, dashboard routes are not mounted and the API works exactly as before.