package scryfall

import (
	"fmt"
	"io/ioutil"
	"net/http"
	"net/http/httptest"
	"testing"
)

const TEST_ID = "56ebc372-aabd-4174-a943-c7bf59e5028d"
const TEST_ENDPOINT = "/cards/" + TEST_ID
const TESTDATA_DIRECTORY = "testdata/"
const TEST_GOOD_CARD_DATA_FILENAME = "card.json"

var (
	mux    *http.ServeMux
	server *httptest.Server
	client *ScryfallClient
)

func setup() func() {
	mux = http.NewServeMux()
	server = httptest.NewServer(mux)

	client, _ = NewScryfallClient(BaseURL(server.URL))

	return func() {
		server.Close()
	}
}

func fixture(filename string) string {
	bytes, err := ioutil.ReadFile(TESTDATA_DIRECTORY + filename)
	if err != nil {
		panic(err)
	}

	return string(bytes)
}

func Test_GetCardImageUrlById_ReturnsUrl_ForSuccessfulRequest(t *testing.T) {
	teardown := setup()
	defer teardown()

	mux.HandleFunc(TEST_ENDPOINT, func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusOK)
		fmt.Fprintf(w, fixture(TEST_GOOD_CARD_DATA_FILENAME))
	})

	url, err := client.GetCardImageUrlById(TEST_ID)
	if err != nil {
		t.Fatal(err)
	}

	if url != "https://cards.scryfall.io/png/front/5/6/56ebc372-aabd-4174-a943-c7bf59e5028d.png?1562629953" {
		t.Fatal(err)
	}
}