package services

import (
	"net/http"
	"net/http/httptest"
	"testing"
	"time"
)

func TestTranslateQueryFallsBackToGoogleWithoutGeminiKey(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		_, _ = w.Write([]byte(`[[["rainy city street","비 오는 도시 거리",null,null,1]],null,"ko"]`))
	}))
	defer server.Close()

	service := NewGeminiService("")
	service.Client = &http.Client{Timeout: 2 * time.Second}
	service.TranslateEndpoint = server.URL

	translated := service.TranslateQuery("비 오는 도시 거리")
	if translated != "rainy city street" {
		t.Fatalf("expected google fallback translation, got %q", translated)
	}
}

func TestTranslateQueryFallsBackToDictionaryWhenTranslateFails(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		http.Error(w, "boom", http.StatusBadGateway)
	}))
	defer server.Close()

	service := NewGeminiService("")
	service.Client = &http.Client{Timeout: 2 * time.Second}
	service.TranslateEndpoint = server.URL

	translated := service.TranslateQuery("숲속 커플")
	if translated != "forest couple" {
		t.Fatalf("expected dictionary fallback translation, got %q", translated)
	}
}

func TestNormalizeKnownMediaPhrases(t *testing.T) {
	translated := translateKoreanMediaTerms("사이버 펑크 도시")
	if translated != "cyberpunk city" {
		t.Fatalf("expected cyberpunk city, got %q", translated)
	}
}

func TestSelectUnevaluatedCandidatesSkipsReviewedLinks(t *testing.T) {
	ranked := []SearchResult{
		{Link: "https://a.example"},
		{Link: "https://b.example"},
		{Link: "https://c.example"},
	}
	reviewed := map[string]bool{
		"https://a.example": true,
	}

	selected := SelectUnevaluatedCandidates(ranked, reviewed, 2)
	if len(selected) != 2 {
		t.Fatalf("expected 2 selected candidates, got %d", len(selected))
	}
	if selected[0].Link != "https://b.example" || selected[1].Link != "https://c.example" {
		t.Fatalf("unexpected selection order: %#v", selected)
	}
}

func TestRemainingGeminiCapacityShrinksWithReviewedItems(t *testing.T) {
	reviewed := []AIRecommendation{
		{Link: "https://a.example"},
		{Link: "https://b.example"},
	}
	if got := RemainingGeminiCapacity(reviewed); got != 14 {
		t.Fatalf("expected 14 remaining slots, got %d", got)
	}
}

func TestGeminiVisualCacheRoundTrip(t *testing.T) {
	service := NewGeminiService("")
	service.setCachedVisual("image\nhttps://example.com/thumb.jpg", "abc", "image/jpeg", time.Minute)

	data, mimeType, ok := service.getCachedVisual("image\nhttps://example.com/thumb.jpg")
	if !ok {
		t.Fatal("expected visual cache hit")
	}
	if data != "abc" || mimeType != "image/jpeg" {
		t.Fatalf("unexpected cached visual data: %q %q", data, mimeType)
	}
}