using EntrustSettle.Common.Const;
using EntrustSettle.Common.DB;
using EntrustSettle.Model;
using SqlSugar;
using System;
using System.Diagnostics;
using System.Linq;
using System.Reflection;

namespace EntrustSettle.Common.Seed
{
    public class DBSeed
    {
        /// <summary>
        /// 初始化Main数据库结构
        /// </summary>
        public static void Seed(SeedContext myContext)
        {
            try
            {
                Console.WriteLine("************ EntrustSettle DataBase Set *****************");
                Console.WriteLine($"Master DB ConId: {myContext.Db.CurrentConnectionConfig.ConfigId}");
                Console.WriteLine($"Master DB Type: {myContext.Db.CurrentConnectionConfig.DbType}");
                Console.WriteLine($"Master DB ConnectString: {myContext.Db.CurrentConnectionConfig.ConnectionString}");
                Console.WriteLine();
                if (BaseDBConfig.MainConfig.SlaveConnectionConfigs.AnyNoException())
                {
                    var index = 0;
                    BaseDBConfig.MainConfig.SlaveConnectionConfigs.ForEach(m =>
                    {
                        index++;
                        Console.WriteLine($"Slave{index} DB HitRate: {m.HitRate}");
                        Console.WriteLine($"Slave{index} DB ConnectString: {m.ConnectionString}");
                        Console.WriteLine($"--------------------------------------");
                    });
                }
                else if (BaseDBConfig.ReuseConfigs.AnyNoException())
                {
                    var index = 0;
                    BaseDBConfig.ReuseConfigs.ForEach(m =>
                    {
                        index++;
                        Console.WriteLine($"Reuse{index} DB ID: {m.ConfigId}");
                        Console.WriteLine($"Reuse{index} DB Type: {m.DbType}");
                        Console.WriteLine($"Reuse{index} DB ConnectString: {m.ConnectionString}");
                        Console.WriteLine($"--------------------------------------");
                    });
                }

                Console.WriteLine();

                // 创建数据库
                Console.WriteLine($"Create Database(The Db Id:{SeedContext.ConnId})...");

                if (SeedContext.DbType != SqlSugar.DbType.Oracle && SeedContext.DbType != SqlSugar.DbType.Dm)
                {
                    myContext.Db.DbMaintenance.CreateDatabase();
                    ConsoleHelper.WriteSuccessLine($"Database created successfully!");
                }
                else
                {
                    //Oracle 数据库不支持该操作
                    ConsoleHelper.WriteSuccessLine($"Oracle 数据库不支持该操作，可手动创建Oracle/Dm数据库!");
                }

                // 创建数据库表，遍历指定命名空间下的class，
                // 注意不要把其他命名空间下的也添加进来。
                Console.WriteLine("Create Tables...");

                var path = AppDomain.CurrentDomain.RelativeSearchPath ?? AppDomain.CurrentDomain.BaseDirectory;
                var referencedAssemblies = System.IO.Directory.GetFiles(path, "EntrustSettle.Model.dll")
                    .Select(Assembly.LoadFrom).ToArray();
                var modelTypes = referencedAssemblies
                    .SelectMany(a => a.DefinedTypes)
                    .Select(type => type.AsType())
                    .Where(x => x.IsClass && x.Namespace is "EntrustSettle.Model.Models")
                    .ToList();
                modelTypes.ForEach(t =>
                {
                    // 这里只支持添加表，不支持删除
                    // 如果想要删除，数据库直接右键删除，或者联系SqlSugar作者；
                    if (!myContext.Db.DbMaintenance.IsAnyTable(t.Name))
                    {
                        Console.WriteLine(t.Name);
                        myContext.Db.CodeFirst.SplitTables().InitTables(t);
                    }
                });
                ConsoleHelper.WriteSuccessLine($"Tables created successfully!");
                Console.WriteLine();
            }
            catch (Exception ex)
            {
                throw new Exception(
                    $"1、若是Mysql,查看常见问题:https://github.com/anjoy8/EntrustSettle/issues/148#issue-776281770 \n" +
                    $"2、若是Oracle,查看常见问题:https://github.com/anjoy8/EntrustSettle/issues/148#issuecomment-752340231 \n" +
                    "3、其他错误：" + ex.Message);
            }
        }
        /// <summary>
        /// 初始化日志数据库结构
        /// </summary>
        public static void MigrationLogs(SeedContext myContext)
        {
            // 创建数据库表，遍历指定命名空间下的class，
            // 注意不要把其他命名空间下的也添加进来。
            Console.WriteLine("Create Log Tables...");
            if (!myContext.Db.IsAnyConnection(DBConst.LogDbConfigId.ToLower()))
            {
                throw new ApplicationException("未配置日志数据库，请在appsettings.json中DBS节点中配置");
            }

            var logDb = myContext.Db.GetConnection(DBConst.LogDbConfigId.ToLower());
            Console.WriteLine($"Create log Database(The Db Id:{DBConst.LogDbConfigId.ToLower()})...");
            logDb.DbMaintenance.CreateDatabase();
            ConsoleHelper.WriteSuccessLine($"Log Database created successfully!");
            var path = AppDomain.CurrentDomain.RelativeSearchPath ?? AppDomain.CurrentDomain.BaseDirectory;
            var referencedAssemblies = System.IO.Directory.GetFiles(path, "EntrustSettle.Model.dll")
                .Select(Assembly.LoadFrom).ToArray();
            var modelTypes = referencedAssemblies
                .SelectMany(a => a.DefinedTypes)
                .Select(type => type.AsType())
                .Where(x => x.IsClass && x.Namespace != null && x.Namespace.StartsWith("EntrustSettle.Model.Logs") && !x.IsAbstract)
                .ToList();
            Stopwatch sw = Stopwatch.StartNew();

            var tables = logDb.DbMaintenance.GetTableInfoList();

            modelTypes.ForEach(t =>
            {
                // 这里只支持添加修改表，不支持删除
                // 如果想要删除，数据库直接右键删除，或者联系SqlSugar作者；
                if (!tables.Any(s => s.Name.Contains(t.Name)))
                {
                    Console.WriteLine(t.Name);
                    if (t.GetCustomAttribute<SplitTableAttribute>() != null)
                    {
                        logDb.CodeFirst.SplitTables().InitTables(t);
                    }
                    else
                    {
                        logDb.CodeFirst.InitTables(t);
                    }
                }
            });

            sw.Stop();

            $"Log Tables created successfully! {sw.ElapsedMilliseconds}ms".WriteSuccessLine();
            Console.WriteLine();
        }
    }
}