using System.Collections.Generic;
using System.Text.RegularExpressions;
using UnityEngine;

namespace Ichni.Story
{
    public class DialogSentence
    {
        public string content;
        public string audioEventName;
        
        public string characterName;
        public string characterEmotion;

        public DialogSentence()
        {
            
        }

        public DialogSentence(string content, string audioEventName, string characterName, string characterEmotion)
        {
            this.content = content;
            this.audioEventName = audioEventName;
            this.characterName = characterName;
            this.characterEmotion = characterEmotion;
        }

        /// <summary>
        /// 匹配{@FUNCTION}，解析函数并返回解析后的语句内容。
        /// </summary>
        public string GetInterpretedContent()
        {
            List<string> parts = new List<string>();
            Regex regex = new Regex(@"\{\@.*?\}");
            int lastIndex = 0;

            foreach (Match match in regex.Matches(content))
            {
                if (match.Index > lastIndex)
                {
                    parts.Add(content.Substring(lastIndex, match.Index - lastIndex));
                }
                parts.Add(match.Value);
                lastIndex = match.Index + match.Length;
            }

            if (lastIndex < content.Length)
            {
                parts.Add(content.Substring(lastIndex));
            }
            
            for (int i = 0; i < parts.Count; i++)
            {
                if (parts[i].StartsWith("{@") && parts[i].EndsWith("}"))
                {
                    string expression = parts[i].Substring(2, parts[i].Length - 3);
                    object result = StoryInterpreters.FunctionInterpreter.Eval(expression);
                    parts[i] = result.ToString();
                }
            }
            
            return string.Join("", parts);
        }
    }
    
    public class Choice
    {
        public string choiceText;
        public string hint;
        public string nextDialogName;
    }

    public class Condition
    {
        public string conditionSentence;
        public string nextDialogName;
        
        public bool GetConditionResult()
        {
            bool result = StoryInterpreters.ConditionInterpreter.Eval<bool>(conditionSentence);
            return result;
        }
    }

    public class DialogCharacter
    {
        public string name;
        public string title;
        public Dictionary<string, Sprite> emotions;
    }
}