205edbdade
- Rename catalog: ingredient/* → product/* (canonical_name, barcode, nutrition per 100g)
- Rename pantry: product/* → userproduct/* (user-owned items with expiry)
- Squash migrations into single 001_initial_schema.sql (clean-db baseline)
- product_categories: add English canonical name column; fix COALESCE in queries
- Remove product_translations: product names are stored in their original language
- Add default_unit_name to product API responses via unit_translations JOIN
- Add cmd/importoff: bulk import from OpenFoodFacts JSONL dump (COPY + ON CONFLICT)
- Diary: support product_id entries alongside dish_id (CHECK num_nonnulls = 1)
- Home: getLoggedCalories joins both recipes and catalog products
- Flutter: rename models/providers/services to match backend rename
- Flutter: add barcode scan flow for diary (mobile_scanner, product_portion_sheet)
- Flutter: localise 6 new keys across 12 languages (barcode scan, portion weight)
- Routes: GET /products/search, GET /products/barcode/{barcode}, /user-products
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
85 lines
2.8 KiB
Go
85 lines
2.8 KiB
Go
package product
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import (
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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)
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// OpenFoodFacts is the client for the Open Food Facts public API.
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type OpenFoodFacts struct {
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httpClient *http.Client
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}
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// NewOpenFoodFacts creates a new OpenFoodFacts client with the default HTTP client.
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func NewOpenFoodFacts() *OpenFoodFacts {
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return &OpenFoodFacts{httpClient: &http.Client{}}
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}
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// offProduct is the JSON shape returned by the Open Food Facts v2 API.
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type offProduct struct {
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ProductName string `json:"product_name"`
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Brands string `json:"brands"`
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Nutriments offNutriments `json:"nutriments"`
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}
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type offNutriments struct {
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EnergyKcal100g *float64 `json:"energy-kcal_100g"`
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Proteins100g *float64 `json:"proteins_100g"`
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Fat100g *float64 `json:"fat_100g"`
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Carbohydrates100g *float64 `json:"carbohydrates_100g"`
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Fiber100g *float64 `json:"fiber_100g"`
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}
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type offResponse struct {
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Status int `json:"status"`
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Product offProduct `json:"product"`
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}
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// Fetch retrieves a product from Open Food Facts by barcode.
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// Returns an error if the product is not found or the API call fails.
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func (client *OpenFoodFacts) Fetch(requestContext context.Context, barcode string) (*Product, error) {
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url := fmt.Sprintf("https://world.openfoodfacts.org/api/v2/product/%s.json", barcode)
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httpRequest, requestError := http.NewRequestWithContext(requestContext, http.MethodGet, url, nil)
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if requestError != nil {
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return nil, fmt.Errorf("build open food facts request: %w", requestError)
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}
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httpRequest.Header.Set("User-Agent", "FoodAI/1.0")
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httpResponse, fetchError := client.httpClient.Do(httpRequest)
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if fetchError != nil {
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return nil, fmt.Errorf("open food facts request: %w", fetchError)
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}
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defer httpResponse.Body.Close()
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if httpResponse.StatusCode != http.StatusOK {
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return nil, fmt.Errorf("open food facts returned status %d for barcode %s", httpResponse.StatusCode, barcode)
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}
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var offResp offResponse
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if decodeError := json.NewDecoder(httpResponse.Body).Decode(&offResp); decodeError != nil {
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return nil, fmt.Errorf("decode open food facts response: %w", decodeError)
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}
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if offResp.Status == 0 {
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return nil, fmt.Errorf("product %s not found in open food facts", barcode)
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}
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canonicalName := offResp.Product.ProductName
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if canonicalName == "" {
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canonicalName = barcode // Fall back to barcode as canonical name
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}
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barcodeValue := barcode
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catalogProduct := &Product{
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CanonicalName: canonicalName,
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Barcode: &barcodeValue,
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CaloriesPer100g: offResp.Product.Nutriments.EnergyKcal100g,
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ProteinPer100g: offResp.Product.Nutriments.Proteins100g,
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FatPer100g: offResp.Product.Nutriments.Fat100g,
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CarbsPer100g: offResp.Product.Nutriments.Carbohydrates100g,
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FiberPer100g: offResp.Product.Nutriments.Fiber100g,
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}
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return catalogProduct, nil
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}
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