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fix: generate recipes in the user's language, not always English

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buildRecipePrompt ignored req.Lang entirely and hardcoded two
English instructions in the prompt. Added targetLang resolution
using the existing langNames map (from recognition.go) and
threaded it into both "Generate N recipes in …" and "All text
fields … MUST be in …" instructions. The image_query field
remains English since it is passed to the Pexels photo API.

Fixes recommendations and menu recipes being returned in English
regardless of the Accept-Language header.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
dbastrikin
2026-03-23 16:42:57 +02:00
parent b38190ff5b
commit cba50489be
1 changed files with 9 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
backend/internal/adapters/openai/recipe.go
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@@ -16,6 +16,7 @@ var goalNames = map[string]string{
"gain": "muscle gain", "gain": "muscle gain",
} }
// GenerateRecipes generates recipes using the OpenAI API. // GenerateRecipes generates recipes using the OpenAI API.
// Retries up to maxRetries times only when the response is not valid JSON. // Retries up to maxRetries times only when the response is not valid JSON.
// API-level errors (rate limits, auth, etc.) are returned immediately. // API-level errors (rate limits, auth, etc.) are returned immediately.
@@ -61,6 +62,11 @@ func buildRecipePrompt(req ai.RecipeRequest) string {
goal = "weight maintenance" goal = "weight maintenance"
} }
targetLang := langNames[req.Lang]
if targetLang == "" {
targetLang = "English"
}
restrictions := "none" restrictions := "none"
if len(req.Restrictions) > 0 { if len(req.Restrictions) > 0 {
restrictions = strings.Join(req.Restrictions, ", ") restrictions = strings.Join(req.Restrictions, ", ")
@@ -87,7 +93,7 @@ func buildRecipePrompt(req ai.RecipeRequest) string {
strings.Join(req.AvailableProducts, "\n") + "\n" strings.Join(req.AvailableProducts, "\n") + "\n"
} }
return fmt.Sprintf(`You are a chef and nutritionist. Generate %d recipes in English. return fmt.Sprintf(`You are a chef and nutritionist. Generate %d recipes in %s.
User profile: User profile:
- Goal: %s - Goal: %s
@@ -101,7 +107,7 @@ Requirements for each recipe:
- Include approximate macros per serving - Include approximate macros per serving
IMPORTANT: IMPORTANT:
- All text fields (title, description, ingredient names, units, step descriptions, tags) MUST be in English. - All text fields (title, description, ingredient names, units, step descriptions, tags) MUST be in %s.
- The "image_query" field MUST always be in English (it is used for stock-photo search). - The "image_query" field MUST always be in English (it is used for stock-photo search).
Return ONLY a valid JSON array without markdown or extra text: Return ONLY a valid JSON array without markdown or extra text:
@@ -118,7 +124,7 @@ Return ONLY a valid JSON array without markdown or extra text:
"steps": [{"number": 1, "description": "...", "timer_seconds": null}], "steps": [{"number": 1, "description": "...", "timer_seconds": null}],
"tags": ["..."], "tags": ["..."],
"nutrition_per_serving": {"calories": 420, "protein_g": 48, "fat_g": 12, "carbs_g": 18} "nutrition_per_serving": {"calories": 420, "protein_g": 48, "fat_g": 12, "carbs_g": 18}
}]`, count, goal, req.DailyCalories, restrictions, cuisines, productsSection, perMealCalories) }]`, count, targetLang, goal, req.DailyCalories, restrictions, cuisines, productsSection, perMealCalories, targetLang)
} }
func parseRecipesJSON(text string) ([]ai.Recipe, error) { func parseRecipesJSON(text string) ([]ai.Recipe, error) {