using SK.Framework;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;

/// <summary>
/// Excel数据解析器
/// </summary>
public class CSVReader : MonoBehaviour
{
    public DialogueData ParseDialogueData(string path)
    {
        //检查文件是否存在
        if (!File.Exists(path)) return null;

        //创建对话数据对象
        DialogueData dialogueData = new DialogueData();
        DialogueEntry currentEntry = null;
        bool isProcessEvent = false;
        DialogueEntry eventEntry = null;

        //读取文件内容
        string[] lines = File.ReadAllLines(path);

        for (int i = 0; i < lines.Length; i++)
        {
            string line = lines[i];
            if (string.IsNullOrWhiteSpace(line)) continue;

            //分割行数据
            string[] parts = line.Split('|');

            //清理每个部分
            for (int j = 0; j < parts.Length; j++)
            {
                parts[j] = parts[j].Trim();
            }

            if (parts.Length < 2) continue;

            //解析角色行
            if (parts[0].Equals("角色"))
            {
                //如果正在处理事件，先保存事件条目
                if (isProcessEvent && eventEntry != null)
                {
                    dialogueData.entries.Add(eventEntry);
                    isProcessEvent = false;
                    eventEntry = null;
                }

                //保存上一个对话条目
                if (currentEntry != null && (currentEntry.dialogues.Count > 0 || currentEntry.hasEvent))
                    dialogueData.entries.Add(currentEntry);

                //创建新的对话条目
                currentEntry = new DialogueEntry
                {
                    role = parts[1],
                    dialogues = new List<string>(),
                    hasEvent = false,
                    eventName = "",
                    eventRole = "",
                    eventChoices = new List<string>(),
                    nextEntryIndex = -1
                };
            }
            //解析对话行
            else if (parts[0].Equals("对话") && currentEntry != null)
            {
                for (int j = 1; j < parts.Length; j++)
                {
                    if (!string.IsNullOrEmpty(parts[j]) && !parts[j].Equals("xxxxx"))
                    {
                        currentEntry.dialogues.Add(parts[j]);
                    }
                }
            }
            //解析事件行
            else if (parts[0].Equals("事件") && currentEntry != null)
            {
                if (currentEntry != null)
                {
                    currentEntry.hasEvent = true;
                    currentEntry.eventName = "交互事件";
                }

                //创建独立的事件条目
                eventEntry = new DialogueEntry
                {
                    role = "系统事件",
                    dialogues = new List<string>(),
                    hasEvent = true,
                    eventName = "玩家选择事件",
                    eventRole = "",
                    eventChoices = new List<string>(),
                    nextEntryIndex = -1
                };
                isProcessEvent = true;
            }
            //解析事件角色行
            else if (parts[0].Equals("事件角色") && eventEntry != null && isProcessEvent)
            {
                eventEntry.eventRole = parts[1];
            }
            //解析事件选项行
            else if (parts[0].Equals("事件选项") && isProcessEvent && eventEntry != null)
            {
                for (int j = 1; j < parts.Length; j++)
                {
                    if (!string.IsNullOrEmpty(parts[j]) && !parts[j].Equals("xxxxx"))
                        eventEntry.eventChoices.Add(parts[j]);
                }

                //检查后续行是否也是选项
                int nextLineIndex = i + 1;
                while (nextLineIndex < line.Length)
                {
                    string nextLine = lines[nextLineIndex].Trim();
                    if (string.IsNullOrEmpty(nextLine)) break;
                    string[] nextparts = nextLine.Split('|');
                    if (nextparts.Length > 0 && string.IsNullOrEmpty(nextparts[0].Trim()))
                    {
                        //选项的延续行
                        for (int j = 0; j < nextparts.Length; j++)
                        {
                            string option = parts[j].Trim();
                            if (!string.IsNullOrEmpty(option))
                                eventEntry.eventChoices.Add(option);
                        }
                        i = nextLineIndex;  //跳过已处理的行
                        nextLineIndex++;
                    }
                    else
                    {
                        break;
                    }
                }
            }
            //处理空行中的对话内容(对话延续)
            else if (parts.Length > 0 && string.IsNullOrEmpty(parts[0]) && currentEntry != null)
            {
                for (int j = 0; j < parts.Length; j++)
                {
                    if (!string.IsNullOrEmpty(parts[j]))
                        currentEntry.dialogues.Add(parts[j]);
                }
            }
        }
        //保留最后一个条目
        if (currentEntry != null && (currentEntry.dialogues.Count > 0 || currentEntry.hasEvent))
        {
            dialogueData.entries.Add(currentEntry);
        }

        //保留最后一个事件条目
        if (isProcessEvent && eventEntry != null)
        {
            dialogueData.entries.Add((eventEntry));
        }
        //BuildEventJumpTable(dialogueData);
        return dialogueData;
    }

    /// <summary>
    /// 创建事件跳过
    /// </summary>
    /// <param name="data"></param>
    private void BuildEventJumpTable(DialogueData data)
    {
        for (int i = 0; i < data.entries.Count; i++)
        {
            if (data.entries[i].hasEvent && !string.IsNullOrEmpty(data.entries[i].eventName))
            {
                string eventKey = $"{data.entries[i].eventRole}_{data.entries[i].eventName}";
                if (!data.eventJumpTable.ContainsKey(eventKey))
                    data.eventJumpTable.Add(eventKey, i);
            }
        }
    }
}