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

/// <summary>Pipeline authoring of the UiSfx prefab: one AudioSource plus the v3 synthesized UI clips in UiSound order.</summary>
public static class BuildUiSfx
{
    public const string PrefabPath = "Assets/Bundles/Sound/Prefab/UiSfx.prefab";
    const string ClipFolder = "Assets/Bundles/Sound/SFX/UI/";

    public static string Build()
    {
        if (EditorApplication.isPlaying) throw new Exception("Build UI SFX in Edit Mode");
        var names = Enum.GetNames(typeof(UiSound));
        var clips = names.Select(n =>
        {
            string path = ClipFolder + "Ui_" + n + ".wav";
            AssetDatabase.ImportAsset(path, ImportAssetOptions.ForceUpdate);
            return AssetDatabase.LoadAssetAtPath<AudioClip>(path) ?? throw new Exception("Missing " + path);
        }).ToArray();
        var longest = clips.OrderByDescending(c => c.length).First();
        if (longest.length > 1f) throw new Exception(longest.name + " is still " + longest.length + "s; import the one-shots first");

        var original = SceneManager.GetActiveScene();
        var temporary = EditorSceneManager.NewScene(NewSceneSetup.EmptyScene, NewSceneMode.Additive);
        try
        {
            SceneManager.SetActiveScene(temporary);
            var root = new GameObject(UiSfx.PrefabName);
            var source = root.AddComponent<AudioSource>();
            source.playOnAwake = false; source.loop = false; source.spatialBlend = 0; source.volume = .8f;
            var player = root.AddComponent<UiSfx>();
            var serialized = new SerializedObject(player);
            serialized.FindProperty("_source").objectReferenceValue = source;
            var list = serialized.FindProperty("_clips"); list.arraySize = clips.Length;
            for (int i = 0; i < clips.Length; i++) list.GetArrayElementAtIndex(i).objectReferenceValue = clips[i];
            serialized.ApplyModifiedPropertiesWithoutUndo();
            PrefabUtility.SaveAsPrefabAsset(root, PrefabPath);
        }
        finally
        {
            SceneManager.SetActiveScene(original);
            EditorSceneManager.CloseScene(temporary, true);
        }
        return Verify();
    }

    public static string Verify()
    {
        var prefab = AssetDatabase.LoadAssetAtPath<GameObject>(PrefabPath) ?? throw new Exception("Missing " + PrefabPath);
        var player = prefab.GetComponent<UiSfx>(); var audio = prefab.GetComponent<AudioSource>();
        if (player == null || player.Source != audio || audio.playOnAwake || audio.loop || audio.spatialBlend != 0) throw new Exception("UiSfx prefab configuration invalid");
        var rows = Enum.GetValues(typeof(UiSound)).Cast<UiSound>().Select(s =>
        {
            var clip = player.Clip(s);
            if (clip == null || clip.name != "Ui_" + s || clip.length > 1f || clip.frequency != 44100) throw new Exception("Bad clip for " + s + ": " + clip?.name);
            return new { sound = s.ToString(), clip = AssetDatabase.GetAssetPath(clip), seconds = Math.Round(clip.length, 3), clip.channels, clip.frequency };
        }).ToArray();
        string report = JsonConvert.SerializeObject(new
        {
            batch = "ui_sfx_v3", prefab = PrefabPath, address = UiSfx.PrefabName, package = "Art", group = "Sound",
            volume = audio.volume, sfxToggle = "PrototypeClientPrefs.Sfx", clips = rows, 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/UiSfx/playback_assets.json"), report);
        return report;
    }
}