# Dutchie Analytics API - Usage Guide

## Base URL
```
http://localhost:3010/api
```

## Authentication
All endpoints require JWT authentication via Bearer token:
```
Authorization: Bearer YOUR_JWT_TOKEN
```

## Products API

### Get Products with Filtering, Sorting & Field Selection

**Endpoint:** `GET /products`

#### Basic Usage
```bash
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?store_id=1&limit=10"
```

#### Field Selection (Reduce Payload Size)
Only return specific fields to reduce bandwidth and improve performance:

```bash
# Only get essential fields
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?store_id=1&fields=id,name,price,brand,in_stock"

# Get fields needed for product cards
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?store_id=1&fields=id,name,price,brand,thc_percentage,image_url_full,in_stock"
```

#### Advanced Filtering

**Filter by Category:**
```bash
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?store_id=1&category_id=5"
```

**Filter by Stock Status:**
```bash
# Only in-stock products
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?store_id=1&in_stock=true"
```

**Search Products:**
```bash
# Search in name, brand, and description
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?search=blue+dream"
```

**Filter by Brand:**
```bash
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?store_id=1&brand=Cresco"
```

**Filter by Price Range:**
```bash
# Products between $20 and $50
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?store_id=1&min_price=20&max_price=50"
```

**Filter by THC Percentage:**
```bash
# High THC products (>20%)
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?store_id=1&min_thc=20"
```

**Filter by Strain Type:**
```bash
# Get only indica strains
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?store_id=1&strain_type=indica"
```

#### Sorting

**Sort by Price:**
```bash
# Lowest price first
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?store_id=1&sort_by=price&sort_order=asc"

# Highest price first
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?store_id=1&sort_by=price&sort_order=desc"
```

**Sort by THC:**
```bash
# Highest THC first
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?store_id=1&sort_by=thc_percentage&sort_order=desc"
```

**Sort by Name:**
```bash
# Alphabetical
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?store_id=1&sort_by=name&sort_order=asc"
```

**Available Sort Fields:**
- `id`
- `name`
- `brand`
- `price`
- `thc_percentage`
- `cbd_percentage`
- `last_seen_at`
- `created_at`

#### Pagination

```bash
# Get first page (50 items)
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?store_id=1&limit=50&offset=0"

# Get second page
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?store_id=1&limit=50&offset=50"
```

#### Complex Query Example

Get affordable indica products sorted by THC:
```bash
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products?\
store_id=1&\
strain_type=indica&\
max_price=40&\
min_thc=15&\
in_stock=true&\
sort_by=thc_percentage&\
sort_order=desc&\
limit=20&\
fields=id,name,brand,price,thc_percentage,strain_type,image_url_full"
```

#### Response Format

```json
{
  "products": [
    {
      "id": 123,
      "name": "Blue Dream 3.5g",
      "brand": "Cresco Labs",
      "price": 45.00,
      "thc_percentage": 24.5,
      "cbd_percentage": 0.5,
      "strain_type": "hybrid",
      "in_stock": true,
      "image_url_full": "http://localhost:9020/dutchie/products/123/full.jpg",
      "thumbnail_url": "http://localhost:9020/dutchie/products/123/thumb.jpg",
      "medium_url": "http://localhost:9020/dutchie/products/123/medium.jpg",
      "store_name": "Curaleaf - Phoenix",
      "category_name": "Flower"
    }
  ],
  "total": 145,
  "limit": 50,
  "offset": 0,
  "filters": {
    "store_id": "1",
    "category_id": null,
    "in_stock": "true",
    "search": null,
    "brand": null,
    "min_price": null,
    "max_price": null,
    "min_thc": null,
    "max_thc": null,
    "strain_type": null,
    "sort_by": "last_seen_at",
    "sort_order": "DESC"
  }
}
```

### Get Single Product

**Endpoint:** `GET /products/:id`

```bash
# Full product data
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products/123"

# With field selection
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products/123?fields=id,name,price,description,image_url_full"
```

### Get Available Brands (Meta Endpoint)

**Endpoint:** `GET /products/meta/brands`

Get list of all brands for filter dropdowns:

```bash
# All brands
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products/meta/brands"

# Brands for specific store
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products/meta/brands?store_id=1"
```

**Response:**
```json
{
  "brands": [
    "Cresco Labs",
    "Select",
    "Timeless",
    "Canamo",
    "Item 9"
  ]
}
```

### Get Price Range (Meta Endpoint)

**Endpoint:** `GET /products/meta/price-range`

Get min/max/avg prices for filter sliders:

```bash
# All products
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products/meta/price-range"

# For specific store
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/products/meta/price-range?store_id=1"
```

**Response:**
```json
{
  "min_price": 15.00,
  "max_price": 120.00,
  "avg_price": 42.50
}
```

## Stores API

### Get All Stores
```bash
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/stores"
```

### Get Single Store
```bash
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/stores/1"
```

### Get Store Brands
```bash
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/stores/1/brands"
```

### Get Store Specials
```bash
# Today's specials
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/stores/1/specials"

# Specials for specific date
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/stores/1/specials?date=2025-01-15"
```

### Trigger Store Scrape (Admin)
```bash
curl -X POST -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"parallel": 3}' \
  "http://localhost:3010/api/stores/1/scrape"
```

## Categories API

### Get Categories (Flat List)
```bash
# All categories
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/categories"

# For specific store
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/categories?store_id=1"
```

### Get Category Tree (Hierarchical)
```bash
curl -H "Authorization: Bearer YOUR_TOKEN" \
  "http://localhost:3010/api/categories/tree?store_id=1"
```

## Real-World Usage Examples

### Build a Product Filter UI

1. **Get filter options:**
```javascript
// Get brands for dropdown
const brands = await fetch('/api/products/meta/brands?store_id=1');

// Get price range for slider
const priceRange = await fetch('/api/products/meta/price-range?store_id=1');

// Get categories for checkboxes
const categories = await fetch('/api/categories?store_id=1');
```

2. **Fetch filtered products:**
```javascript
const params = new URLSearchParams({
  store_id: '1',
  brand: selectedBrand,
  min_price: minPrice,
  max_price: maxPrice,
  category_id: selectedCategory,
  in_stock: 'true',
  sort_by: 'price',
  sort_order: 'asc',
  fields: 'id,name,price,brand,thc_percentage,image_url_full,in_stock'
});

const products = await fetch(`/api/products?${params}`);
```

### Build a WordPress Product Grid

```php
// Efficient field selection for grid display
$fields = 'id,name,price,brand,thc_percentage,image_url_full,in_stock';

$response = wp_remote_get(
  "http://localhost:3010/api/products?store_id=1&in_stock=true&limit=12&fields=$fields",
  ['headers' => ['Authorization' => 'Bearer ' . $token]]
);

$data = json_decode(wp_remote_retrieve_body($response));
foreach ($data->products as $product) {
  // Only contains requested fields = smaller payload
  echo render_product_card($product);
}
```

### Build Price Comparison Tool

```javascript
// Get cheapest products across all stores
const cheapProducts = await fetch(
  '/api/products?in_stock=true&sort_by=price&sort_order=asc&limit=50&fields=id,name,price,store_name'
);

// Get highest THC products
const strongProducts = await fetch(
  '/api/products?in_stock=true&min_thc=25&sort_by=thc_percentage&sort_order=desc&limit=50'
);
```

## Performance Tips

1. **Use Field Selection:** Only request fields you need to reduce bandwidth
2. **Pagination:** Use reasonable `limit` values (50-100)
3. **Caching:** Cache brand lists, price ranges, and category data
4. **Combine Filters:** Use multiple filters to reduce result set size
5. **Index Optimization:** The API uses indexed fields for filtering

## Rate Limits

- Standard users: 100 requests/minute
- Admin users: 500 requests/minute
- Exceeded limits return `429 Too Many Requests`

## Error Responses

```json
{
  "error": "Failed to fetch products"
}
```

HTTP Status Codes:
- `200` - Success
- `400` - Bad Request
- `401` - Unauthorized
- `404` - Not Found
- `429` - Too Many Requests
- `500` - Server Error