using System.Text;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Audio;
public class SoundManager : MonoBehaviour
{
    [Header("Источники")]
    [SerializeField] private AudioSource MusicSrc;
    [SerializeField] private AudioSource UiSrc;
    [SerializeField] private AudioSource ReplicasSrc;


    [Header("Микшер")]
    [SerializeField] private AudioMixer mixer;

    [Header("Группы")]

    [SerializeField] private AudioMixerGroup MasterGroup;
    [SerializeField] private AudioMixerGroup MenuGroup;
    [SerializeField] private AudioMixerGroup UiGroup;
    [SerializeField] private AudioMixerGroup MusicGroup;
    [SerializeField] private AudioMixerGroup GameplayGroup;
    [SerializeField] private AudioMixerGroup SfxGroup;
    [SerializeField] private AudioMixerGroup ReplicasGroup;
    [SerializeField] private AudioMixerGroup EnvironmentGroup;

    const string GAMEPLAY_VOLUME = "GameplayVolume";
    const string MASTER_VOLUME = "MasterVolume";
    const string MENU_VOLUME = "MenuVolume";

    private static SoundManager instance;

    public static bool Initialized { get; private set; } = false;

    public void Initialize()
    {
        if (Initialized)
        {
            Debug.LogWarning("Trying to initialize initialized SoundManager");
            return;
        }
        instance = this;

        //Подтянуть настройки
        PullSettings();
        SettingsManager.SettingsSaved += PullSettings;

        //Валидация ссылок
        var validationResult = ValidateReferences();
        if (!validationResult.OK)
        {
            Initialized = false;
            Debug.LogError(validationResult.Message, instance);
            return;
        }

        //Установка каналов
        MusicSrc.outputAudioMixerGroup = MusicGroup;
        UiSrc.outputAudioMixerGroup = UiGroup;
        ReplicasSrc.outputAudioMixerGroup = ReplicasGroup;

        Initialized = true;
        DontDestroyOnLoad(gameObject);

    }

    public static void PlayMusic()
    {
        if (CheckInitialized())
            instance.MusicSrc.Play();
    }
    public static void StopMusic()
    {
        if (CheckInitialized())
            instance.MusicSrc.Stop();
    }

    public static void PlayUi(AudioClip clip)
    {
        if (CheckInitialized())
        {
            if (clip == null)
            {
                Debug.Log("UI clip to play is null");
                return;
            }
            instance.UiSrc.PlayOneShot(clip);
        }
    }

    public static void PlayReplica(AudioClip clip)
    {
        if (CheckInitialized())
        {
            if (clip == null)
            {
                Debug.Log("Replica clip to play is null");
                return;
            }
            instance.ReplicasSrc.PlayOneShot(clip);
        }
    }

    //Перегрузка для рандомного выбора из списка
    public static void PlayReplica(List<AudioClip> clips)
    {
        if (CheckInitialized())
        {
            if (clips == null || clips.Count == 0)
            {
                Debug.Log("Replica clip to play is null or count is 0");
                return;
            }
            var clip = clips[Random.Range(0, clips.Count)];
            instance.ReplicasSrc.PlayOneShot(clip);
        }
    }

    public static void AssignSourceToChannel(AudioSource source, MixerChannel channel)
    {
        if (CheckInitialized())
        {
            if (source == null)
            {
                Debug.LogError("Source to assign is null");
                return;
            }

            source.outputAudioMixerGroup = ChannelFromEnum(channel);
        }
    }

    private static AudioMixerGroup ChannelFromEnum(MixerChannel channel)
    {
        return channel switch
        {
            MixerChannel.Master => instance.MasterGroup,
            MixerChannel.Menu => instance.MenuGroup,
            MixerChannel.UI => instance.UiGroup,
            MixerChannel.Music => instance.MusicGroup,
            MixerChannel.Gameplay => instance.GameplayGroup,
            MixerChannel.SFX => instance.SfxGroup,
            MixerChannel.Replicas => instance.ReplicasGroup,
            MixerChannel.Environment => instance.EnvironmentGroup,
            _ => instance.MasterGroup,
        };
    }

    private static bool CheckInitialized()
    {
        if (Initialized) return true;

        Debug.LogError("Trying use non initialized sound manager");
        return false;
    }

    private static (bool OK, string Message) ValidateReferences()
    {
        var sb = new StringBuilder();
        sb.AppendLine("[Sound Manager Validation]");

        bool hasErrors = false;

        if (instance.MusicSrc == null) { sb.AppendLine("MusicSrc is not assigned!"); hasErrors = true; }
        if (instance.UiSrc == null) { sb.AppendLine("UiSrc is not assigned!"); hasErrors = true; }
        if (instance.ReplicasSrc == null) { sb.AppendLine("ReplicasSrc is not assigned!"); hasErrors = true; }

        if (instance.mixer == null) { sb.AppendLine("AudioMixer is not assigned!"); hasErrors = true; }

        if (instance.MasterGroup == null) { sb.AppendLine("MasterGroup is not assigned!"); hasErrors = true; }
        if (instance.MenuGroup == null) { sb.AppendLine("MenuGroup is not assigned!"); hasErrors = true; }
        if (instance.UiGroup == null) { sb.AppendLine("UiGroup is not assigned!"); hasErrors = true; }
        if (instance.MusicGroup == null) { sb.AppendLine("MusicGroup is not assigned!"); hasErrors = true; }
        if (instance.GameplayGroup == null) { sb.AppendLine("GameplayGroup is not assigned!"); hasErrors = true; }
        if (instance.SfxGroup == null) { sb.AppendLine("SfxGroup is not assigned!"); hasErrors = true; }
        if (instance.ReplicasGroup == null) { sb.AppendLine("ReplicasGroup is not assigned!"); hasErrors = true; }
        if (instance.EnvironmentGroup == null) { sb.AppendLine("EnvironmentGroup is not assigned!"); hasErrors = true; }

        if (hasErrors)
        {
            sb.AppendLine("Please assign all missing references in the inspector!");
        }
        return (!hasErrors, sb.ToString());
    }

    private void PullSettings()
    {
        SetMixerVolume(MASTER_VOLUME, SettingsManager.GetFloat(SettingKey.MasterVolume));
        SetMixerVolume(GAMEPLAY_VOLUME, SettingsManager.GetFloat(SettingKey.GameVolume));
        SetMixerVolume(MENU_VOLUME, SettingsManager.GetFloat(SettingKey.MenuVolume));
    }
    private void SetMixerVolume(string parameterName, float value)
    {
        if (mixer == null)
        {
            Debug.LogError("Master mixer is not assigned!");
            return;
        }

        // Конвертируем линейное значение (0-1) в децибелы
        // -80dB это практически тишина (минимальное значение)
        // 0dB это максимальная громкость
        float dB;

        if (value <= 0.001f)
        {
            dB = -80f; // Полная тишина
        }
        else
        {
            dB = Mathf.Log10(value) * 20f;
            // Ограничиваем минимальным значением -80dB
            dB = Mathf.Max(dB, -80f);
        }

        mixer.SetFloat(parameterName, dB);
    }

    public enum MixerChannel
    {
        Master,

        Menu,
        UI,
        Music,

        Gameplay,
        SFX,
        Replicas,
        Environment
    }
}