# Update Rating

Update an existing rating for a media item.

**Endpoint**: `PUT /api/media-items/{media_id}/rating`
**Auth**: Required
**Content-Type**: `application/json`

## Path Parameters

| Parameter | Type   | Required | Description     |
| --------- | ------ | -------- | --------------- |
| media_id  | string | Yes      | Media item UUID |

## Request Body

| Field  | Type    | Required | Description               |
| ------ | ------- | -------- | ------------------------- |
| rating | integer | Yes      | Rating value (1-10 scale) |
| review | string  | No       | Optional review text      |

**Rating Scale**: 1-10 (odd numbers = half-stars: 1=0.5★, 2=1★, 3=1.5★, ..., 9=4.5★, 10=5★)

### Example Request

```json
{
  "rating": 8,
  "review": "Great book! Very enjoyable read."
}
```

## Response (200 OK)

```json
{
  "id": "uuid",
  "media_item_id": "uuid",
  "user_id": "uuid",
  "rating": 8,
  "review": "Great book! Very enjoyable read.",
  "created_at": "2026-01-31T10:00:00Z",
  "updated_at": "2026-01-31T11:00:00Z"
}
```

## Error Responses

| Code | Description                    |
| ---- | ------------------------------ |
| 400  | Invalid request data           |
| 401  | Invalid or expired token       |
| 404  | Media item or rating not found |
