package metadata

import (
	"context"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
)

func TestComicVineSearch(t *testing.T) {
	var gotPath, gotAPIKey, gotUA string

	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotPath = r.URL.Path
		gotAPIKey = r.URL.Query().Get("api_key")
		gotUA = r.Header.Get("User-Agent")
		w.Header().Set("Content-Type", "application/json")
		_, _ = w.Write([]byte(`{
			"status_code": 1,
			"results": [
				{
					"id": 796,
					"name": "Saga",
					"start_year": "2012",
					"description": "<p>A space opera.</p>",
					"publisher": {"name": "Image Comics"},
					"image": {"medium_url": "https://example.test/saga.jpg", "small_url": ""}
				}
			]
		}`))
	}))
	defer srv.Close()

	p := NewComicVine("secret-key")
	p.BaseURL = srv.URL

	cands, err := p.Search(context.Background(), Query{Title: "Saga"})
	if err != nil {
		t.Fatalf("Search: %v", err)
	}
	if len(cands) != 1 {
		t.Fatalf("got %d candidates, want 1", len(cands))
	}

	c := cands[0]
	if c.Title != "Saga" {
		t.Errorf("Title = %q", c.Title)
	}
	if c.ExternalID != "796" {
		t.Errorf("ExternalID = %q", c.ExternalID)
	}
	if c.Year != 2012 {
		t.Errorf("Year = %d, want 2012", c.Year)
	}
	if c.Publisher != "Image Comics" {
		t.Errorf("Publisher = %q", c.Publisher)
	}
	if c.CoverURL != "https://example.test/saga.jpg" {
		t.Errorf("CoverURL = %q", c.CoverURL)
	}
	if c.Description != "A space opera." {
		t.Errorf("Description = %q (HTML should be stripped)", c.Description)
	}

	if gotPath != "/search/" {
		t.Errorf("request path = %q, want /search/", gotPath)
	}
	if gotAPIKey != "secret-key" {
		t.Errorf("api_key = %q, want secret-key", gotAPIKey)
	}
	if gotUA == "" {
		t.Error("no User-Agent sent; ComicVine rejects those")
	}
}

func TestComicVineRejectsBadAPIKey(t *testing.T) {
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		_, _ = w.Write([]byte(`{"status_code": 100, "error": "Invalid API Key", "results": []}`))
	}))
	defer srv.Close()

	p := NewComicVine("wrong")
	p.BaseURL = srv.URL

	if _, err := p.Search(context.Background(), Query{Title: "Saga"}); err == nil {
		t.Fatal("expected an error for status_code 100")
	} else if !strings.Contains(err.Error(), "API key") {
		t.Errorf("error %q should mention the API key", err)
	}
}

func TestComicVineWithoutKeyDoesNothing(t *testing.T) {
	p := NewComicVine("")
	cands, err := p.Search(context.Background(), Query{Title: "Saga"})
	if err != nil {
		t.Fatalf("Search: %v", err)
	}
	if len(cands) != 0 {
		t.Errorf("got %d candidates with no key, want 0", len(cands))
	}
}

func TestStripHTML(t *testing.T) {
	cases := map[string]string{
		"<p>A space opera.</p>":          "A space opera.",
		"plain text":                     "plain text",
		"<b>Bold</b> and <i>italic</i>.": "Bold and italic.",
		"":                               "",
	}
	for in, want := range cases {
		if got := stripHTML(in); got != want {
			t.Errorf("stripHTML(%q) = %q, want %q", in, got, want)
		}
	}
}