package engines

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

	"github.com/metamorphosis-dev/kafka/internal/contracts"
)

func TestWikipediaEngine_Search(t *testing.T) {
	transport := roundTripperFunc(func(r *http.Request) (*http.Response, error) {
		if r.Method != http.MethodGet {
			return httpResponse(http.StatusMethodNotAllowed, "", ""), nil
		}
		if r.URL.Host != "en.wikipedia.org" {
			return httpResponse(http.StatusNotFound, "", ""), nil
		}

		if r.URL.Path != "/api/rest_v1/page/summary/Taxi" {
			return httpResponse(http.StatusNotFound, "", ""), nil
		}

		body := `{
  "title": "Taxi",
  "description": "A car",
  "titles": { "display": "Taxi" },
  "content_urls": { "desktop": { "page": "https://en.wikipedia.org/wiki/Taxi" } }
}`
		return httpResponse(http.StatusOK, body, "application/json"), nil
	})

	client := &http.Client{Transport: transport}
	engine := &WikipediaEngine{client: client}

	resp, err := engine.Search(context.Background(), contracts.SearchRequest{
		Query:  "Taxi",
		Pageno: 1,
		Language: "en",
	})
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if len(resp.Results) != 1 {
		t.Fatalf("expected 1 result, got %d", len(resp.Results))
	}
	r := resp.Results[0]
	if r.Title != "Taxi" {
		t.Fatalf("expected title Taxi, got %q", r.Title)
	}
	if r.Content != "A car" {
		t.Fatalf("expected content, got %q", r.Content)
	}
	if r.URL == nil || *r.URL == "" {
		t.Fatalf("expected url, got nil/empty")
	}
	if *r.URL != "https://en.wikipedia.org/wiki/Taxi" {
		t.Fatalf("unexpected url: %q", *r.URL)
	}
}