using System;
using System.IO;
using HotUpdate.Gameplay;
using Newtonsoft.Json;
using UnityEditor;
using UnityEditor.SceneManagement;
using UnityEngine;
using UnityEngine.SceneManagement;
using YooAsset.Editor;

public static class BuildMainMenuMusic
{
    public const string PrefabPath = "Assets/Bundles/Sound/Prefab/MainMenuMusic.prefab";
    const string ClipPath = "Assets/Bundles/Sound/BGM/MeadowBreeze_MainMenu_Loop.ogg";

    public static string Build()
    {
        if (EditorApplication.isPlaying) throw new Exception("Build music in Edit Mode");
        var clip = AssetDatabase.LoadAssetAtPath<AudioClip>(ClipPath);
        if (clip == null) throw new Exception("Selected BGM missing");
        if (!AssetDatabase.IsValidFolder("Assets/Bundles/Sound/Prefab"))
            AssetDatabase.CreateFolder("Assets/Bundles/Sound", "Prefab");
        var original = SceneManager.GetActiveScene();
        var temporary = EditorSceneManager.NewScene(NewSceneSetup.EmptyScene, NewSceneMode.Additive);
        try
        {
            SceneManager.SetActiveScene(temporary);
            var root = new GameObject(MainMenuMusic.PrefabName);
            var source = root.AddComponent<AudioSource>();
            source.clip = clip;
            source.playOnAwake = false;
            source.loop = true;
            source.spatialBlend = 0;
            source.volume = 1;
            var player = root.AddComponent<MainMenuMusic>();
            var serialized = new SerializedObject(player);
            serialized.FindProperty("_source").objectReferenceValue = source;
            serialized.ApplyModifiedPropertiesWithoutUndo();
            PrefabUtility.SaveAsPrefabAsset(root, PrefabPath);
        }
        finally
        {
            SceneManager.SetActiveScene(original);
            EditorSceneManager.CloseScene(temporary, true);
        }

        var package = BundleCollectorSettingData.Setting.Packages.Find(p => p.PackageName == "Art");
        var group = package?.Groups.Find(g => g.GroupName == "Sound");
        if (group == null) throw new Exception("Existing Art/Sound group missing");
        const string folder = "Assets/Bundles/Sound/Prefab";
        if (!group.Collectors.Exists(c => c.CollectPath == folder))
            BundleCollectorSettingData.CreateCollector(group, new BundleCollector {
                CollectPath = folder, CollectorGUID = AssetDatabase.AssetPathToGUID(folder),
                CollectorType = ECollectorType.MainAssetCollector,
                AddressRuleName = nameof(AddressByFileName), PackRuleName = nameof(PackSeparately),
                FilterRuleName = nameof(CollectAll), AssetTags = "art"
            });
        package.CheckConfigError();
        BundleCollectorSettingData.SaveFile();
        var prefab = AssetDatabase.LoadAssetAtPath<GameObject>(PrefabPath);
        var audio = prefab.GetComponent<AudioSource>();
        if (prefab.GetComponent<MainMenuMusic>()?.Source != audio || audio.clip != clip ||
            !audio.loop || audio.playOnAwake || audio.spatialBlend != 0 || audio.volume != 1)
            throw new Exception("Music prefab configuration invalid");
        string report = JsonConvert.SerializeObject(new {
            selected = ClipPath, prefab = PrefabPath, address = MainMenuMusic.PrefabName,
            package = "Art", group = "Sound", loop = audio.loop, volume = audio.volume,
            seconds = clip.length, clip.channels, clip.frequency,
            independentMusicToggle = true, runtimePlaybackWired = true,
            bundleBuilt = false, verifiedUtc = DateTime.UtcNow.ToString("o")
        }, Formatting.Indented);
        string repo = Directory.GetParent(Application.dataPath).Parent.FullName;
        File.WriteAllText(Path.Combine(repo, "Doc/Design/Sound/MainMenuSoft/playback_assets.json"), report);
        return report;
    }
}