# Tag API

> **Prefix:** `/api/v1/tags`, `/api/v1/admin/tag`

Tags are used for categorizing blog posts.

---

## GET `/api/v1/tags`

List all active tags.

**Permission:** `PUBLIC`

### Response `200`
```json
{
  "success": true,
  "data": [
    { "id": 1, "name": "دیابت", "slug": "diabat", "status": "active" },
    { "id": 2, "name": "قلب", "slug": "ghalb", "status": "active" }
  ]
}
```

---

## GET `/api/v1/admin/tags`

List all tags with pagination (admin view — includes inactive).

**Permission:** `ROLE_ADMIN`

### Query Parameters
| Param | Type | Required | Description |
|-------|------|----------|-------------|
| `page` | integer | ❌ | Default: 1 |
| `limit` | integer | ❌ | Default: 20 |
| `search` | string | ❌ | Search in name |

### Response `200`
```json
{
  "success": true,
  "data": [ ... ],
  "meta": { "totalRecords": 10, "totalPages": 1, "currentPage": 1 }
}
```

### Errors
| Code | HTTP | Description |
|------|------|-------------|
| `ERR_AUTH_001` | 401 | Missing token |
| `ERR_AUTH_006` | 403 | Not admin |

---

## POST `/api/v1/admin/tag`

Create a new tag.

**Permission:** `ROLE_ADMIN`

### Request Body (`application/json`)
```json
{
  "name": "دیابت",
  "slug": "diabat",
  "status": "active"
}
```

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `name` | string | ✅ | Tag name |
| `slug` | string | ❌ | Auto-generated from name if omitted |
| `status` | string | ❌ | `"active"` (default) or `"inactive"` |

### Response `201`
Tag object.

### Errors
| Code | HTTP | Description |
|------|------|-------------|
| `ERR_AUTH_001` | 401 | Missing token |
| `ERR_AUTH_006` | 403 | Not admin |
| `ERR_VALIDATION_002` | 422 | Missing name |

---

## PATCH `/api/v1/admin/tag/{id}`

Update a tag.

**Permission:** `ROLE_ADMIN`

### Path Parameters
| Param | Type | Description |
|-------|------|-------------|
| `id` | integer | Tag ID |

All fields optional.

### Response `200`
Updated tag object.

### Errors
| Code | HTTP | Description |
|------|------|-------------|
| `ERR_AUTH_001` | 401 | Missing token |
| `ERR_AUTH_006` | 403 | Not admin |
| `ERR_NOT_FOUND_001` | 404 | Tag not found |

---

## DELETE `/api/v1/admin/tag/{id}`

Delete a tag.

**Permission:** `ROLE_ADMIN`

### Response `200`
```json
{ "success": true, "data": { "message": "تگ حذف شد" } }
```

### Errors
| Code | HTTP | Description |
|------|------|-------------|
| `ERR_AUTH_001` | 401 | Missing token |
| `ERR_AUTH_006` | 403 | Not admin |
| `ERR_NOT_FOUND_001` | 404 | Tag not found |
