using System;
using UnityEngine;

namespace AlicizaX.Audio.Runtime
{
    [CreateAssetMenu(fileName = "AudioGroupConfigs", menuName = "AlicizaX/Audio/Audio Group Configs", order = 40)]
    public sealed class AudioGroupConfigCollection : ScriptableObject
    {
        [SerializeField] private AudioGroupConfig[] m_GroupConfigs = CreateDefaultConfigs();

        public AudioGroupConfig[] GroupConfigs => m_GroupConfigs;

        public void EnsureDefaults()
        {
            if (m_GroupConfigs == null || m_GroupConfigs.Length == 0)
            {
                m_GroupConfigs = CreateDefaultConfigs();
                return;
            }

            bool[] found = new bool[(int)AudioType.Max];
            int validCount = 0;
            for (int i = 0; i < m_GroupConfigs.Length; i++)
            {
                AudioGroupConfig config = m_GroupConfigs[i];
                if (config == null)
                {
                    continue;
                }

                int index = (int)config.AudioType;
                if ((uint)index >= (uint)found.Length || found[index])
                {
                    continue;
                }

                found[index] = true;
                validCount++;
            }

            if (validCount == (int)AudioType.Max)
            {
                return;
            }

            AudioGroupConfig[] defaults = CreateDefaultConfigs();
            AudioGroupConfig[] merged = new AudioGroupConfig[(int)AudioType.Max];
            for (int i = 0; i < m_GroupConfigs.Length; i++)
            {
                AudioGroupConfig config = m_GroupConfigs[i];
                if (config == null)
                {
                    continue;
                }

                int index = (int)config.AudioType;
                if ((uint)index < (uint)merged.Length && merged[index] == null)
                {
                    merged[index] = config;
                }
            }

            for (int i = 0; i < merged.Length; i++)
            {
                if (merged[i] == null)
                {
                    merged[i] = defaults[i];
                }
            }

            m_GroupConfigs = merged;
        }

#if UNITY_EDITOR
        private void OnValidate()
        {
            EnsureDefaults();
        }
#endif

        internal static AudioGroupConfig[] CreateDefaultConfigs()
        {
            AudioGroupConfig[] configs = new AudioGroupConfig[(int)AudioType.Max];
            configs[(int)AudioType.Music] = CreateConfig(AudioType.Music, "音乐", "MusicVolume", 2, 0f, false);
            configs[(int)AudioType.Sound] = CreateConfig(AudioType.Sound, "音效", "SoundVolume", 24, 1f, false);
            configs[(int)AudioType.UISound] = CreateConfig(AudioType.UISound, "界面音效", "UISoundVolume", 12, 0f, false);
            configs[(int)AudioType.Voice] = CreateConfig(AudioType.Voice, "语音", "VoiceVolume", 6, 1f, true);
            configs[(int)AudioType.Ambient] = CreateConfig(AudioType.Ambient, "环境音", "AmbientVolume", 6, 1f, true);
            return configs;
        }

        private static AudioGroupConfig CreateConfig(AudioType type, string name, string exposedVolumeParameter, int channelCount, float spatialBlend, bool occlusion)
        {
            AudioGroupConfig config = new AudioGroupConfig();
            config.SetDefaults(type, name, exposedVolumeParameter, channelCount, spatialBlend, occlusion);
            return config;
        }
    }
}