# Inventory API

> **Prefix:** `/api/v1/inventory-*`

Per-tenant (doctor/clinic) consumable-stock management: **items** and **packages**
(bundles of items). Every row is scoped to the caller's resolved entity
(`doctor` / `clinic`), exactly like Tenant Tags — a tenant only ever sees and
mutates its own inventory. Prices are stored and returned in **Rial** (integer).

**Permission (all routes):** `IS_AUTHENTICATED_FULLY` (roles `doctor`, `clinic`;
`secretary` resolves to its active clinic/doctor context).

Item `status` is **derived, never stored**:
`stock <= 0` → `out_of_stock`; `stock <= alertThreshold` → `low_stock`; else `in_stock`.

---

## Items

### GET `/api/v1/inventory-items`

List the tenant's items plus the four derived stat counters.

#### Response `200`
```json
{
  "success": true,
  "data": {
    "items": [
      {
        "uuid": "…",
        "name": "دستکش جراحی",
        "consumable": "جراحی",
        "category": "لوازم مصرفی و تزریقات",
        "unit": "عدد",
        "price": 250000,
        "stock": 150,
        "alertThreshold": 20,
        "status": "in_stock"
      }
    ],
    "stats": { "total": 1, "low": 0, "inStock": 1, "outOfStock": 0 }
  }
}
```

### GET `/api/v1/inventory-categories`

Distinct non-empty `category` values **actually in use** by the tenant — powers the
filter dropdown. For the full list of allowed categories use `inventory-meta`.

#### Response `200`
```json
{ "success": true, "data": ["دارو", "لوازم آزمایشگاهی"] }
```

### GET `/api/v1/inventory-meta`

Backend-owned option lists for the item form. **Single source of truth** — the
admin never hardcodes units/categories. Values are plain Persian strings stored
as-is; the create/update endpoints validate against these lists.

#### Response `200`
```json
{
  "success": true,
  "data": {
    "units": ["عدد", "بسته", "…", "سی‌سی", "میلی‌لیتر", "…"],
    "categories": ["دارو", "لوازم مصرفی و تزریقات", "…", "سایر"]
  }
}
```

### POST `/api/v1/inventory-item`

Create an item.

#### Body
| Field | Type | Required | Notes |
|-------|------|----------|-------|
| `name` | string | ✅ | نام کالا |
| `consumable` | string | ❌ | «مصرفی» — یادداشت آزاد (سازگاری عقب‌رو) |
| `category` | string | ❌ | دسته‌بندی؛ باید یکی از `inventory-meta.categories` باشد. خالی → `null`. فرم ادمین آن را الزامی می‌کند |
| `unit` | string | ❌ | باید یکی از `inventory-meta.units` باشد. خالی → پیش‌فرض `عدد` |
| `price` | integer | ❌ | Rial, Default `0` |
| `stock` | integer | ❌ | Default `0` |
| `alertThreshold` | integer | ❌ | Default `0` |

#### Response `201`
```json
{ "success": true, "data": { "uuid": "…", "name": "دستکش جراحی", "status": "in_stock", "...": "..." } }
```

#### Errors
| Status | Code | Cause |
|--------|------|-------|
| `422` | `ERR_VALIDATION_001` | `name` خالی است (field `name`) |
| `422` | `ERR_VALIDATION_001` | `unit` خارج از لیست مجاز (field `unit`) |
| `422` | `ERR_VALIDATION_001` | `category` خارج از لیست مجاز (field `category`) |
| `403` | `ERR_FORBIDDEN_001` | پروفایل tenant یافت نشد |

### PATCH `/api/v1/inventory-item/{uuid}`

Partial update. Any of the create fields may be sent. Returns `200` with the item,
`404 ERR_NOT_FOUND_001` if the item does not belong to the caller, `422` on empty `name`.

### DELETE `/api/v1/inventory-item/{uuid}`

Delete an item. `200` with `{ "message": "کالا حذف شد" }`, or `404` if not owned.
Deleting an item also removes it from any package lines (FK `ON DELETE CASCADE`).

---

## Packages

A package's `total` (Rial) and `available` (boolean) are **derived at read time**
from its component items — `available` is `true` only if every component item has
`stock >= amount`.

### GET `/api/v1/inventory-packages`

#### Response `200`
```json
{
  "success": true,
  "data": [
    {
      "uuid": "…",
      "title": "پکیج شماره یک",
      "items": [
        { "itemUuid": "…", "name": "ژل", "unit": "سی‌سی", "price": 1200000, "amount": 2 }
      ],
      "total": 2400000,
      "available": true
    }
  ]
}
```

### POST `/api/v1/inventory-package`

#### Body
| Field | Type | Required | Notes |
|-------|------|----------|-------|
| `title` | string | ✅ | نام پکیج |
| `items` | array | ❌ | `[{ "itemUuid": "…", "amount": 2 }]` — references not owned by the caller are silently skipped |

#### Response `201` — the serialized package (same shape as list). Errors: `422 ERR_VALIDATION_001` (empty `title`), `403 ERR_FORBIDDEN_001`.

### PATCH `/api/v1/inventory-package/{uuid}`

Partial update. `title` renames; sending `items` **replaces** all component lines.
`200` with the package, `404 ERR_NOT_FOUND_001` if not owned, `422` on empty `title`.

### DELETE `/api/v1/inventory-package/{uuid}`

`200` with `{ "message": "پکیج حذف شد" }`, or `404` if not owned.
