using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Threading;
using System.Windows.Forms;

namespace YLPublishTool
{
    class Program
    {
        static int Main(string[] args)
        {
            if (Environment.UserInteractive && (args == null || args.Length < 1))
            {
                Console.WriteLine("启用配置模式");
                AppDomain.CurrentDomain.UnhandledException += (sender, ex) =>
                {
                    Console.WriteLine("发生错误:" + ex.ExceptionObject);
                };
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                var t = new Thread(() =>
                {
                    new Forms.MainForm().ShowDialog();
                });
                t.SetApartmentState(ApartmentState.STA);
                t.Start();
                return 1;
            }

            AppDomain.CurrentDomain.UnhandledException += (sender, ex) =>
            {
                if (ex.ExceptionObject is Exception exp)
                {
                    NLog.LogManager.GetLogger(nameof(Program)).Error(exp, "发生未处理错误");
                }
                else
                {
                    NLog.LogManager.GetLogger(nameof(Program)).Error(ex.ExceptionObject);
                }
            };

            var errcode = 0;

            try
            {
                foreach (var arg in args)
                {
                    NLog.LogManager.GetLogger("命令参数").Info(arg);

                    if (arg.StartsWith("/p:"))
                    {
                        var predefines = new NameValueCollection {
                            ["当前目录"] = AppContext.BaseDirectory.TrimEnd('\\')
                        };

                        foreach (var kv in ParseEnume(arg.Substring(3).Trim(new char[] { '\'', '"' })))
                        {
                            if (kv.Key != "f")
                            {
                                predefines[kv.Key] = kv.Value;
                                NLog.LogManager.GetLogger("外部变量").Info($"{kv.Key} = {kv.Value}");
                            }
                            else if (!string.IsNullOrWhiteSpace(kv.Value))
                            {
                                try
                                {
                                    new Runner().Run(kv.Value, predefines);
                                }
                                catch (Exception ex)
                                {
                                    errcode++;
                                    NLog.LogManager.GetLogger("Runner").Error(ex, "运行脚本出错:" + kv.Value);
                                }
                            }
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                errcode++;
                NLog.LogManager.GetLogger(nameof(Program)).Error(ex, "运行脚本出错");
            }

            return errcode;
        }

        private static IEnumerable<KeyValuePair<string, string>> ParseEnume(string query)
        {
            var len = query.Length;
            var buf = new char[len + 2];
            query.CopyTo(0, buf, 0, len);
            len += 2;

            //在下面的循环中正好排除最后一个处理
            buf[len - 2] = '&';
            buf[len - 1] = 'm';

            var start = 0;
            var hasEscape = false;


            for (var index = 0; index < len; index++)
            {
                if (buf[index] != '&')
                {
                    continue;
                }

                if (buf[index + 1] == '&')
                {
                    index++;
                    hasEscape = true;
                    continue;
                }

                //处理遇到单个&的情况

                var substr = new string(buf, start, index - start).Trim();

                start = index + 1;

                if (substr.Length == 0)
                {
                    continue;
                }

                if (hasEscape)
                {
                    hasEscape = false;
                    substr = substr.Replace("&&", "&");
                }

                var index2 = substr.IndexOf('=');

                if (index2 > 0)
                {
                    var key = substr.Substring(0, index2).Trim();
                    var value = substr.Substring(index2 + 1).Trim();
                    yield return new KeyValuePair<string, string>(key, value);
                }
                else
                {
                    yield return new KeyValuePair<string, string>(substr.Trim(), string.Empty);
                }
            }
        }
    }
}