package main

import (
	"fmt"
	"github.com/google/uuid"
	"io"
	"testing"
)

type mockPlayer struct{}

func (p *mockPlayer) Play(*Song)                                          {}
func (p *mockPlayer) PlayUri(string)                                      {}
func (p *mockPlayer) PlayData(io.Reader)                                  {}
func (p *mockPlayer) Search(pattern map[string]string) (res chan []*Song) { return }
func (p *mockPlayer) Playing() bool                                       { return false }
func (p *mockPlayer) Pause()                                              {}
func (p *mockPlayer) Continue()                                           {}
func (p *mockPlayer) Stop()                                               {}
func (p *mockPlayer) LoadPlaylist(string) []*Song                         { return nil }

var alice, _ = uuid.NewRandom()

func TestWrmsAdd(t *testing.T) {
	wrms := Wrms{Player: &mockPlayer{}}
	s1 := NewDummySong("song1", "snfmt")
	wrms.AddSong(s1)

	if len(wrms.queue) != 1 {
		t.Log("len should be 1")
		t.Fail()
	}
}

func TestWrmsAdd3Next3(t *testing.T) {
	wrms := Wrms{Player: &mockPlayer{}}
	songs := []*Song{
		NewDummySong("song1", "snfmt"),
		NewDummySong("song2", "snfmt"),
		NewDummySong("song3", "snfmt"),
	}

	for _, s := range songs {
		wrms.AddSong(s)
	}

	if len(wrms.queue) != len(songs) {
		t.Log("len should be 3")
		t.Fail()
	}

	for _, s := range wrms.queue.OrderedList() {
		wrms.Next()
		if wrms.CurrentSong.Load().Uri != s.Uri {
			t.Log("Not returning the next song")
			t.Fail()
		}
	}
}

func TestWrmsAdjust(t *testing.T) {
	wrms := Wrms{Player: &mockPlayer{}}
	s1 := NewDummySong("song1", "snfmt")
	wrms.AddSong(s1)

	wrms.AdjustSongWeight(alice, s1.Uri, "up")
	if wrms.queue[0].Weight != 1 {
		t.Log("song weight should be 1")
		t.Fail()
	}
}

func TestWrmsUpDownNext(t *testing.T) {
	wrms := Wrms{Player: &mockPlayer{}}
	s1 := NewDummySong("song1", "snfmt")
	s2 := NewDummySong("song2", "snfmt")
	wrms.AddSong(s1)
	wrms.AddSong(s2)

	wrms.AdjustSongWeight(alice, s1.Uri, "down")
	wrms.AdjustSongWeight(alice, s2.Uri, "up")
	wrms.Next()
	if wrms.CurrentSong.Load().Uri != s2.Uri {
		t.Log("Not retrning the upvoted song s2")
		t.Fail()
	}
}

func TestWrmsUpUpDownNextNext(t *testing.T) {
	wrms := Wrms{Player: &mockPlayer{}}
	s1 := NewDummySong("song1", "snfmt")
	s2 := NewDummySong("song2", "snfmt")
	s3 := NewDummySong("song3", "snfmt")
	wrms.AddSong(s1)
	wrms.AddSong(s2)
	wrms.AddSong(s3)

	wrms.AdjustSongWeight(alice, s1.Uri, "up")
	wrms.AdjustSongWeight(alice, s2.Uri, "down")
	wrms.AdjustSongWeight(alice, s3.Uri, "up")
	wrms.Next()
	if wrms.CurrentSong.Load().Uri == s2.Uri {
		t.Log("Playing the downvoted song s2")
		t.Fail()
	}
	wrms.Next()
	if wrms.CurrentSong.Load().Uri == s2.Uri {
		t.Log("Playing the downvoted song s2")
		t.Fail()
	}
}

func TestWrmsDoubleAdd(t *testing.T) {
	wrms := Wrms{Player: &mockPlayer{}}
	s1 := NewDummySong("song1", "snfmt")

	wrms.AddSong(s1)
	wrms.AdjustSongWeight(alice, s1.Uri, "up")
	wrms.Next()

	s1 = NewDummySong("song1", "snfmt")
	wrms.AddSong(s1)
	wrms.AdjustSongWeight(alice, s1.Uri, "up")
	wrms.Next()
}

func TestFlipVote(t *testing.T) {
	wrms := Wrms{Player: &mockPlayer{}}
	s := NewDummySong("song", "snfmt")

	wrms.AddSong(s)
	wrms.AdjustSongWeight(alice, s.Uri, "up")
	if wrms.Songs[0].Weight != 1 {
		t.Log("Weight is not 1")
		t.Fail()
	}
	wrms.AdjustSongWeight(alice, s.Uri, "down")
	if wrms.Songs[0].Weight != -1 {
		t.Log("Weight is not -1")
		t.Fail()
	}
}

func TestTimeBonus(t *testing.T) {
	wrms := Wrms{Player: &mockPlayer{}}
	wrms.Config.timeBonus = 0.1
	songs := []*Song{
		NewDummySong("song1", "snfmt"),
		NewDummySong("song2", "snfmt"),
		NewDummySong("song3", "snfmt"),
	}

	for _, s := range songs {
		wrms.AddSong(s)
	}

	exp := 0.1 * float64(len(songs)-1)
	if wrms.Songs[0].Weight != exp {
		t.Log(fmt.Sprintf("TimeBonus not correctly applied song %p %v expected: %v", &wrms.Songs[0], wrms.Songs[0], exp))
		t.Fail()
	}
}