//go:build integration

package ingredient

import (
	"context"
	"encoding/json"
	"testing"

	"github.com/food-ai/backend/internal/locale"
	"github.com/food-ai/backend/internal/testutil"
)

func TestIngredientRepository_Upsert_Insert(t *testing.T) {
	pool := testutil.SetupTestDB(t)
	repo := NewRepository(pool)
	ctx := context.Background()

	id := 1001
	cat := "produce"
	unit := "g"
	cal := 52.0

	m := &IngredientMapping{
		CanonicalName: "apple",
		SpoonacularID: &id,
		Aliases:       json.RawMessage(`["apple", "apples"]`),
		Category:      &cat,
		DefaultUnit:   &unit,
		CaloriesPer100g: &cal,
	}

	got, err := repo.Upsert(ctx, m)
	if err != nil {
		t.Fatalf("upsert: %v", err)
	}
	if got.ID == "" {
		t.Error("expected non-empty ID")
	}
	if got.CanonicalName != "apple" {
		t.Errorf("canonical_name: want apple, got %s", got.CanonicalName)
	}
	if *got.CaloriesPer100g != 52.0 {
		t.Errorf("calories: want 52.0, got %v", got.CaloriesPer100g)
	}
}

func TestIngredientRepository_Upsert_ConflictUpdates(t *testing.T) {
	pool := testutil.SetupTestDB(t)
	repo := NewRepository(pool)
	ctx := context.Background()

	id := 2001
	cat := "produce"
	unit := "g"

	first := &IngredientMapping{
		CanonicalName: "banana",
		SpoonacularID: &id,
		Aliases:       json.RawMessage(`["banana"]`),
		Category:      &cat,
		DefaultUnit:   &unit,
	}
	got1, err := repo.Upsert(ctx, first)
	if err != nil {
		t.Fatalf("first upsert: %v", err)
	}

	cal := 89.0
	second := &IngredientMapping{
		CanonicalName:   "banana_updated",
		SpoonacularID:   &id,
		Aliases:         json.RawMessage(`["banana", "bananas"]`),
		Category:        &cat,
		DefaultUnit:     &unit,
		CaloriesPer100g: &cal,
	}
	got2, err := repo.Upsert(ctx, second)
	if err != nil {
		t.Fatalf("second upsert: %v", err)
	}

	if got1.ID != got2.ID {
		t.Errorf("ID changed on conflict update: %s != %s", got1.ID, got2.ID)
	}
	if got2.CanonicalName != "banana_updated" {
		t.Errorf("canonical_name not updated: got %s", got2.CanonicalName)
	}
	if got2.CaloriesPer100g == nil || *got2.CaloriesPer100g != 89.0 {
		t.Errorf("calories not updated: got %v", got2.CaloriesPer100g)
	}
}

func TestIngredientRepository_GetBySpoonacularID_Found(t *testing.T) {
	pool := testutil.SetupTestDB(t)
	repo := NewRepository(pool)
	ctx := context.Background()

	id := 3001
	cat := "dairy"
	unit := "g"

	_, err := repo.Upsert(ctx, &IngredientMapping{
		CanonicalName: "cheese",
		SpoonacularID: &id,
		Aliases:       json.RawMessage(`["cheese"]`),
		Category:      &cat,
		DefaultUnit:   &unit,
	})
	if err != nil {
		t.Fatalf("upsert: %v", err)
	}

	got, err := repo.GetBySpoonacularID(ctx, id)
	if err != nil {
		t.Fatalf("get: %v", err)
	}
	if got == nil {
		t.Fatal("expected non-nil result")
	}
	if got.CanonicalName != "cheese" {
		t.Errorf("want cheese, got %s", got.CanonicalName)
	}
}

func TestIngredientRepository_GetBySpoonacularID_NotFound(t *testing.T) {
	pool := testutil.SetupTestDB(t)
	repo := NewRepository(pool)
	ctx := context.Background()

	got, err := repo.GetBySpoonacularID(ctx, 99999999)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if got != nil {
		t.Error("expected nil result for missing ID")
	}
}

func TestIngredientRepository_ListMissingTranslation(t *testing.T) {
	pool := testutil.SetupTestDB(t)
	repo := NewRepository(pool)
	ctx := context.Background()

	cat := "produce"
	unit := "g"

	// Insert 3 without any translation.
	for i, name := range []string{"carrot", "onion", "garlic"} {
		id := 4000 + i
		_, err := repo.Upsert(ctx, &IngredientMapping{
			CanonicalName: name,
			SpoonacularID: &id,
			Aliases:       json.RawMessage(`[]`),
			Category:      &cat,
			DefaultUnit:   &unit,
		})
		if err != nil {
			t.Fatalf("upsert %s: %v", name, err)
		}
	}

	// Insert 1 and add a Russian translation — should not appear in the result.
	id := 4100
	saved, err := repo.Upsert(ctx, &IngredientMapping{
		CanonicalName: "tomato",
		SpoonacularID: &id,
		Aliases:       json.RawMessage(`[]`),
		Category:      &cat,
		DefaultUnit:   &unit,
	})
	if err != nil {
		t.Fatalf("upsert tomato: %v", err)
	}
	if err := repo.UpsertTranslation(ctx, saved.ID, "ru", "помидор", json.RawMessage(`["помидор","томат"]`)); err != nil {
		t.Fatalf("upsert translation: %v", err)
	}

	missing, err := repo.ListMissingTranslation(ctx, "ru", 10, 0)
	if err != nil {
		t.Fatalf("list missing translation: %v", err)
	}

	for _, m := range missing {
		if m.CanonicalName == "tomato" {
			t.Error("translated ingredient should not appear in ListMissingTranslation")
		}
	}
	if len(missing) < 3 {
		t.Errorf("expected at least 3 untranslated, got %d", len(missing))
	}
}

func TestIngredientRepository_UpsertTranslation(t *testing.T) {
	pool := testutil.SetupTestDB(t)
	repo := NewRepository(pool)
	ctx := context.Background()

	id := 5001
	cat := "meat"
	unit := "g"

	saved, err := repo.Upsert(ctx, &IngredientMapping{
		CanonicalName: "chicken_breast",
		SpoonacularID: &id,
		Aliases:       json.RawMessage(`["chicken breast"]`),
		Category:      &cat,
		DefaultUnit:   &unit,
	})
	if err != nil {
		t.Fatalf("upsert: %v", err)
	}

	err = repo.UpsertTranslation(ctx, saved.ID, "ru", "куриная грудка",
		json.RawMessage(`["куриная грудка","куриное филе"]`))
	if err != nil {
		t.Fatalf("upsert translation: %v", err)
	}

	// Retrieve with Russian context — CanonicalName should be the Russian name.
	ruCtx := locale.WithLang(ctx, "ru")
	got, err := repo.GetByID(ruCtx, saved.ID)
	if err != nil {
		t.Fatalf("get by id: %v", err)
	}
	if got.CanonicalName != "куриная грудка" {
		t.Errorf("expected CanonicalName='куриная грудка', got %q", got.CanonicalName)
	}

	// Retrieve with English context (default) — CanonicalName should be the English name.
	enCtx := locale.WithLang(ctx, "en")
	gotEn, err := repo.GetByID(enCtx, saved.ID)
	if err != nil {
		t.Fatalf("get by id (en): %v", err)
	}
	if gotEn.CanonicalName != "chicken_breast" {
		t.Errorf("expected English CanonicalName='chicken_breast', got %q", gotEn.CanonicalName)
	}
}