using System.Globalization;
using UnityEngine;

namespace AibisDream
{
    [CreateAssetMenu(
        fileName = "NarrativeTextStyleConfig",
        menuName = AibisAssetMenus.NarrativeTextStyle)]
    public sealed class NarrativeTextStyleConfig : ScriptableObject
    {
        [Header("语义颜色")]
        [SerializeField] private Color _asideColor = new Color32(0x5F, 0x5F, 0x5F, 0xFF);
        [SerializeField] private Color _termColor = new Color32(0x52, 0xB6, 0xFF, 0xFF);
        [SerializeField] private Color _keyColor = new Color32(0xFF, 0xB2, 0x00, 0xFF);

        [Header("节奏与效果")]
        [SerializeField, Min(0f)] private float _commaPauseSeconds = 0.2f;
        [SerializeField] private string _ulmEffectPrefix = "[[vertexp d=0.05 bot]]";
        [SerializeField] private string _jokeOpenTag = "<wiggle a=0.3 s=0.1>";
        [SerializeField] private string _jokeCloseTag = "</wiggle>";

        public Color AsideColor => _asideColor;
        public Color TermColor => _termColor;
        public Color KeyColor => _keyColor;
        public float CommaPauseSeconds => _commaPauseSeconds;
        public string UlmEffectPrefix => _ulmEffectPrefix;
        public string JokeOpenTag => _jokeOpenTag;
        public string JokeCloseTag => _jokeCloseTag;
    }

    public static class NarrativeTextStyleExpander
    {
        private static readonly Color DefaultAsideColor = new Color32(0x5F, 0x5F, 0x5F, 0xFF);
        private static readonly Color DefaultTermColor = new Color32(0x52, 0xB6, 0xFF, 0xFF);
        private static readonly Color DefaultKeyColor = new Color32(0xFF, 0xB2, 0x00, 0xFF);

        public static string Expand(string text, NarrativeTextStyleConfig config)
        {
            if (string.IsNullOrEmpty(text))
            {
                return text;
            }

            Color asideColor = config != null ? config.AsideColor : DefaultAsideColor;
            Color termColor = config != null ? config.TermColor : DefaultTermColor;
            Color keyColor = config != null ? config.KeyColor : DefaultKeyColor;
            float commaPause = config != null ? config.CommaPauseSeconds : 0.2f;
            string ulmPrefix = config != null
                ? config.UlmEffectPrefix
                : "[[vertexp d=0.05 bot]]";
            string jokeOpen = config != null
                ? config.JokeOpenTag
                : "<wiggle a=0.3 s=0.1>";
            string jokeClose = config != null ? config.JokeCloseTag : "</wiggle>";

            return text
                .Replace("[[aside]]", ColorOpen(asideColor))
                .Replace("[[/aside]]", "</color>")
                .Replace("[[term]]", ColorOpen(termColor))
                .Replace("[[/term]]", "</color>")
                .Replace("[[key]]", ColorOpen(keyColor))
                .Replace("[[/key]]", "</color>")
                .Replace(
                    "[[comma-pause]]",
                    $"<waitfor={commaPause.ToString("0.###", CultureInfo.InvariantCulture)}>")
                .Replace("[[ulm]]", ulmPrefix)
                .Replace("[[joke]]", jokeOpen)
                .Replace("[[/joke]]", jokeClose);
        }

        private static string ColorOpen(Color color)
        {
            // This runs after Yarn has parsed the source, so the hash must not
            // carry Yarn's source-level escape into TextMesh Pro.
            return $"<color=#{ColorUtility.ToHtmlStringRGB(color)}>";
        }
    }
}