using System.Collections.Generic;
using System.IO;


namespace Thousandto.DIY
{
    /// <summary>
    /// 修改UIEventDefine.cs文件，添加open和close的事件定义
    /// </summary>
    public static class ModifyUIEventDefine
    {
        public const string UIEVENT_FILE_PATH = "Assets/Code/Global/Event/UIEventDefine.cs";

        public static void ModifyFile(string formName, int uiconfigID)
        {
            string openEventDefine = string.Format("{0}_OPEN", formName);
            string openEventValue = string.Format("{0} + EventConstDefine.EVENT_UI_BASE_ID,", uiconfigID * 10);
            string closeEventDefine = string.Format("{0}_CLOSE", formName);
            string closeEventValue = string.Format("{0} + EventConstDefine.EVENT_UI_BASE_ID,", uiconfigID * 10 + 9);

            List<string> lineList = new List<string>();
            List<string> endSignList = new List<string>();

            StreamReader sr = new StreamReader(UIEVENT_FILE_PATH);
            int changed = 0;
            string line = "";
            while ((line = sr.ReadLine()) != null)
            {
                if (line.IndexOf("}") >= 0 && line.IndexOf("//") == -1)
                {
                    endSignList.Add(line);
                    continue;
                }

                int checkValue = checkLine(ref line, openEventDefine, openEventValue);
                if (checkValue > changed)
                    changed = checkValue;

                checkValue = checkLine(ref line, closeEventDefine, closeEventValue);
                if (checkValue > changed)
                    changed = checkValue;
                
                lineList.Add(line);
            }
            sr.Close();

            //不存在，需要新增
            if (changed == 0)
            {
                string newOpenDefine = string.Format("        {0} = {1}", openEventDefine, openEventValue);
                string newCloseDefine = string.Format("        {0} = {1}", closeEventDefine, closeEventValue);
                lineList.Add(newOpenDefine);
                lineList.Add(newCloseDefine);
            }

            //不存在或者做了修改
            if (changed == 0 || changed == 2)
            {
                lineList.AddRange(endSignList);
                WriteToFile(lineList);
            }
            else
                UnityEngine.Debug.LogError("UIEventDefine已经定义窗体Open和Close事件： " + formName);
        }

        /// <summary>
        /// 检查form的事件定义是否存在，如果存在则判断是否需要修改
        /// </summary>
        /// <param name="line">已知行</param>
        /// <param name="define">事件定义</param>
        /// <param name="value">事件值</param>
        /// <returns>0：不存在； 1： 存在但相同； 2：存在且不同</returns>
        private static int checkLine(ref string line, string define, string value)
        {
            int ret = 0;
            if (line.IndexOf(define) >= 0)
            {
                if (line.IndexOf(value) == -1)
                {
                    line = string.Format("        {0} = {1}", define, value);
                    ret = 2;
                }
                else
                    ret = 1;
            }

            return ret;
        }

        private static void WriteToFile(List<string> contentList)
        {
            if (contentList == null || contentList.Count == 0) return;

            StreamWriter sw = new StreamWriter(UIEVENT_FILE_PATH);
            for (int i = 0; i < contentList.Count; ++i)
            {
                sw.WriteLine(contentList[i]);
            }
            sw.Close();

            UnityEngine.Debug.LogError("保存到UIEventDefine成功");
        }
    }
}