package engines

import (
	"context"
	"net/http"
	"strings"
	"testing"
	"time"

	"github.com/ashie/gosearch/internal/contracts"
)

func TestBingEngine_EmptyQuery(t *testing.T) {
	eng := &BingEngine{}
	resp, err := eng.Search(context.Background(), contracts.SearchRequest{Query: ""})
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if len(resp.Results) != 0 {
		t.Errorf("expected 0 results for empty query, got %d", len(resp.Results))
	}
}

func TestBingEngine_Name(t *testing.T) {
	eng := &BingEngine{}
	if eng.Name() != "bing" {
		t.Errorf("expected 'bing', got %q", eng.Name())
	}
}

func TestBingEngine_Uninitialized(t *testing.T) {
	eng := &BingEngine{}
	_, err := eng.Search(context.Background(), contracts.SearchRequest{Query: "test"})
	if err == nil {
		t.Error("expected error for uninitialized client")
	}
}

func TestParseBingHTML(t *testing.T) {
	html := `<li class="b_algo">
		<h2><a href="https://example.com">Example Title</a></h2>
		<div class="b_caption"><p>This is a test snippet from Bing.</p></div>
	</li>
	<li class="b_algo">
		<h2><a href="https://example2.com">Second Result</a></h2>
		<div class="b_caption"><p>Another snippet</p></div>
	</li>`

	results, err := parseBingHTML(strings.NewReader(html))
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if len(results) != 2 {
		t.Fatalf("expected 2 results, got %d", len(results))
	}
	if results[0].Title != "Example Title" {
		t.Errorf("expected 'Example Title', got %q", results[0].Title)
	}
	if *results[0].URL != "https://example.com" {
		t.Errorf("expected 'https://example.com', got %q", *results[0].URL)
	}
	if results[0].Content != "This is a test snippet from Bing." {
		t.Errorf("unexpected content: %q", results[0].Content)
	}
}

func TestBingEngine_LiveRequest(t *testing.T) {
	if testing.Short() {
		t.Skip("skipping live request")
	}

	client := &http.Client{}
	eng := &BingEngine{client: client}

	ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
	defer cancel()

	resp, err := eng.Search(ctx, contracts.SearchRequest{
		Query: "golang programming language",
	})
	if err != nil {
		t.Fatalf("live search failed: %v", err)
	}

	t.Logf("bing returned %d results", len(resp.Results))
	for _, r := range resp.Results {
		if r.Engine != "bing" {
			t.Errorf("expected engine 'bing', got %q", r.Engine)
		}
	}
}