/*
Copyright © 2023 Philipp Wolfer <phw@uploadedlobster.com>

This file is part of Scotty.

Scotty is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later version.

Scotty is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with
Scotty. If not, see <https://www.gnu.org/licenses/>.
*/

package jspf_test

import (
	"encoding/json"
	"fmt"
	"io"
	"os"
	"testing"
	"time"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
	"go.uploadedlobster.com/scotty/internal/backends/jspf"
)

func TestUnmarshalSimple(t *testing.T) {
	data, err := readSampleJson("testdata/simple.jspf")
	require.NoError(t, err)

	assert := assert.New(t)
	playlist := data.Playlist
	assert.Equal("Two Songs From Thriller", playlist.Title)
	assert.Equal("MJ Fan", playlist.Creator)
	require.Len(t, playlist.Tracks, 2)
	track1 := playlist.Tracks[0]
	require.Len(t, track1.Location, 1)
	assert.Equal("http://example.com/billiejean.mp3", track1.Location[0])
	assert.Equal("Billie Jean", track1.Title)
	assert.Equal("Michael Jackson", track1.Creator)
	assert.Equal("Thriller", track1.Album)
}

func TestUnmarshalComprehensive(t *testing.T) {
	data, err := readSampleJson("testdata/comprehensive.jspf")
	require.NoError(t, err)

	assert := assert.New(t)
	playlist := data.Playlist
	assert.Equal("http://example.com/", playlist.License)
	require.Len(t, playlist.Attribution, 2)
	assert.Equal("http://example.com/", playlist.Attribution[0]["identifier"])
	assert.Equal("http://example.com/", playlist.Attribution[1]["location"])
	require.Len(t, playlist.Meta, 2)
	assert.Equal("345", playlist.Meta[1]["http://example.com/rel/2/"])
	require.Len(t, playlist.Links, 2)
	assert.Equal("http://example.com/body/1/", playlist.Links[0]["http://example.com/rel/1/"])
}

func TestUnmarshalListenBrainzPlaylist(t *testing.T) {
	data, err := readSampleJson("testdata/lb-playlist.jspf")
	require.NoError(t, err)

	assert := assert.New(t)
	playlist := data.Playlist
	assert.Equal(
		"https://listenbrainz.org/playlist/96485e27-967a-492a-9d04-c5a819baa2f3",
		playlist.Identifier)
	expectedPlaylistDate, err := time.Parse(time.RFC3339, "2023-07-04T21:03:52.317148+00:00")
	require.NoError(t, err)
	assert.Equal(expectedPlaylistDate, playlist.Date)
	assert.NotNil(playlist.Extension["https://musicbrainz.org/doc/jspf#playlist"])

	require.Len(t, playlist.Tracks, 2)
	track1 := playlist.Tracks[0]
	assert.Equal(
		"https://musicbrainz.org/recording/3f2bdbbd-063e-478c-a394-6da0cb303302",
		track1.Identifier[0])
	fmt.Printf("Ext: %v\n", track1.Extension["https://musicbrainz.org/doc/jspf#track"])
	extension := track1.Extension["https://musicbrainz.org/doc/jspf#track"].(map[string]any)
	assert.NotNil(extension)
	assert.Equal("outsidecontext", extension["added_by"])
}

func readSampleJson(path string) (jspf.JSPF, error) {
	var result jspf.JSPF
	jsonFile, err := os.Open(path)
	if err != nil {
		return result, err
	}
	defer jsonFile.Close()

	byteValue, err := io.ReadAll(jsonFile)
	if err != nil {
		return result, err
	}

	err = json.Unmarshal(byteValue, &result)
	return result, err
}