package main

import (
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"net/http/httptest"
	"reflect"
	"testing"

	"git.andreafazzi.eu/andrea/testhub/models"
	"github.com/remogatto/prettytest"
)

// Start of setup
type testSuite struct {
	prettytest.Suite
}

type StubPlayerStore struct {
	scores   map[string]int
	winCalls []string
	league   []models.Player
}

func (store *StubPlayerStore) GetPlayerScore(player string) int {
	return store.scores[player]
}

func (s *StubPlayerStore) RecordWin(name string) {
	s.winCalls = append(s.winCalls, name)
}

func (store *StubPlayerStore) GetLeague() []models.Player {
	return store.league
}

func TestRunner(t *testing.T) {
	prettytest.Run(
		t,
		new(testSuite),
	)
}

func (t *testSuite) TestGETPlayers() {
	tests := []struct {
		name               string
		expectedScore      string
		expectedHTTPStatus int
	}{
		{"Pepper", "20", http.StatusOK},
		{"Floyd", "10", http.StatusOK},
		{"Apollo", "0", http.StatusNotFound},
	}

	store := &StubPlayerStore{
		map[string]int{
			"Pepper": 20,
			"Floyd":  10,
		},
		nil,
		[]models.Player{},
	}

	server := NewPlayerServer(store)

	for _, test := range tests {
		request, _ := http.NewRequest(http.MethodGet, "/players/"+test.name, nil)
		response := httptest.NewRecorder()

		server.ServeHTTP(response, request)
		t.Equal(test.expectedScore, response.Body.String())
		t.Equal(test.expectedHTTPStatus, response.Code)
	}

}

func (t *testSuite) TestPOSTPlayers() {
	store := &StubPlayerStore{
		map[string]int{},
		nil,
		[]models.Player{},
	}

	server := NewPlayerServer(store)

	request, _ := http.NewRequest(http.MethodPost, "/players/Pepper", nil)
	response := httptest.NewRecorder()

	server.ServeHTTP(response, request)
	t.Equal(1, len(store.winCalls))
	t.Equal(http.StatusAccepted, response.Code)
}

func (t *testSuite) TestGETLeague() {
	expectedResult := []models.Player{
		{Name: "Cleo", Wins: 20},
		{Name: "Chris", Wins: 10},
	}

	store := &StubPlayerStore{
		nil,
		nil,
		expectedResult,
	}

	server := NewPlayerServer(store)

	request, _ := http.NewRequest(http.MethodGet, "/league", nil)
	response := httptest.NewRecorder()

	server.ServeHTTP(response, request)

	result := getLeagueFromResponse(response.Body)

	t.True(leaguesAreEqual(expectedResult, result))
	t.Equal(http.StatusOK, response.Code)
}

func getLeagueFromResponse(body io.Reader) (league []models.Player) {
	err := json.NewDecoder(body).Decode(&league)

	if err != nil {
		panic(fmt.Errorf("Unable to parse response from server %q into slice of Player, '%v'", body, err))
	}

	return
}

func leaguesAreEqual(got, want []models.Player) bool {
	return reflect.DeepEqual(got, want)
}