package main

import (
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"net/url"
	"strings"
	"testing"
	"time"

	"git.andreafazzi.eu/andrea/youtube-dl-service/downloader"
	"git.andreafazzi.eu/andrea/youtube-dl-service/logger"
	"git.andreafazzi.eu/andrea/youtube-dl-service/task"
	"github.com/gin-gonic/gin"
	"github.com/remogatto/prettytest"
)

var config *Config

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

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

func (t *testSuite) BeforeAll() {
	gin.SetMode(gin.ReleaseMode)
	logger.SetLevel(logger.DebugLevel)

	config = new(Config)
	err := ReadConfig("config.yaml", config)
	if err != nil {
		panic(err)
	}
}

// Test the creation of a new task. A new task is created with a POST
// request to the endpoint.
func (t *testSuite) TestCreateTask() {
	video, err := postTask("https://www.youtube.com/watch?v=zGDzdps75ns")
	if err != nil {
		panic(err)
	}
	t.Equal("zGDzdps75ns", video.ID)
}

// Test the response of a GET /tasks/:id requests.
func (t *testSuite) TestGetTask() {
	video, err := postTask("https://www.youtube.com/watch?v=zGDzdps75ns")
	if err != nil {
		panic(err)
	}

	timer := time.NewTimer(time.Second * 10)
	<-timer.C

	// Create a new request
	req, err := http.NewRequest("GET", "/task/"+video.ID, nil)
	if err != nil {
		panic(err)
	}

	// Create an http recorder
	rr := httptest.NewRecorder()

	// Set the context and call the handler
	c, _ := gin.CreateTestContext(rr)
	c.Request = req

	getTask(c, video.ID)

	// Read the response and assert it.
	ts := new(task.Task)

	if err := json.Unmarshal(rr.Body.Bytes(), &ts); err != nil {
		panic(err)
	}

	t.Equal("zGDzdps75ns", video.ID)
	t.Equal(task.StatusCompleted, ts.Status)
	t.Equal(100.0, ts.Percentage)
}

func (t *testSuite) TestPostLogin() {
	// Set form values
	form := url.Values{}
	form.Add("password", "secret")

	req, err := http.NewRequest("POST", "/login", strings.NewReader((form.Encode())))
	if err != nil {
		panic(err)
	}

	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")

	// Create an http recorder
	rr := httptest.NewRecorder()

	// Set the context and call the handler
	c, _ := gin.CreateTestContext(rr)
	c.Request = req

	err = postLogin(c, config)
	t.Nil(err)
}

func postTask(ytUrl string) (*downloader.Video, error) {
	// Set form values
	form := url.Values{}
	form.Add("url", ytUrl)

	// Create a new request
	req, err := http.NewRequest("POST", "/task", strings.NewReader(form.Encode()))
	if err != nil {
		return nil, err
	}

	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")

	// Create an http recorder
	rr := httptest.NewRecorder()

	// Set the context and call the handler
	c, _ := gin.CreateTestContext(rr)
	c.Request = req

	createTask(c)

	// Read the response and assert it.
	video := new(downloader.Video)

	if err := json.Unmarshal(rr.Body.Bytes(), &video); err != nil {
		return nil, err
	}

	return video, nil
}