using CScommon;
using Microsoft.AspNet.Identity;
using System;
using System.Collections.Generic;
using System.Data.Entity.Validation;
using System.Linq;
using System.Threading;
using Weee.DAL;
using Weee.Models;

namespace Weee.Service
{
    public class UserService
    {
        private readonly WeeeDataContext db;
        private readonly UserManager<User> manager;
        public UserService(WeeeDataContext db, UserManager<User> m)
        {
            this.db = db;
            manager = m;
        }
        public int getCompanyId(string userId)
        {
            var qry = db.Users.Where(x => x.Id == userId).FirstOrDefault();
            if (qry != null && qry.CompanyID!=null)
                return (int)qry.CompanyID;
            return 0;
        }
        public bool isCompanyAdmin(string UserId)
        {
            var qry = db.Users.Where(x => x.Id == UserId && x.IsCompanyAdmin == true);
            bool ret = qry.Any();
            return ret;
        }
        public string GetNameByUserName(string username)
        {
            string ret = "";
            var qry = (from a in db.Users
                       where a.UserName== username
                       select a.Name).FirstOrDefault();
            if (qry != null)
                ret = qry;
            return ret;
        }
        public IEnumerable<User> GetByMyCompany(string UserId)
        {
            var currentId = UserId;// User.Identity.GetUserId();
            var qry = db.Users.Where(x => x.Id == currentId && x.IsCompanyAdmin==true);
            if (!qry.Any())
                return new List<User>();
            var currentCompanyId = qry.Select(x => x.CompanyID).Single();

            return db.Users
                     .Where(x => !x.IsSystemAdmin && !x.IsCompanyAdmin && x.CompanyID == currentCompanyId)
                     .ToList();
        }
        public object GetByUid(string uid, string UserId)
        {
            var currentId = UserId;// User.Identity.GetUserId();
            var currentCompanyId = db.Users.Where(x => x.Id == currentId).Select(x => x.CompanyID).Single();

            return db.Users
                     .Where(x => !x.IsSystemAdmin && !x.IsCompanyAdmin && x.CompanyID == currentCompanyId)
                     .Where(x => x.Id == uid)
                     .FirstOrDefault();
        }
        public int Delete(User toBeSave, string UserId)
        {
            var trans = db.Database.BeginTransaction();
            try
            {
                var qry = (from a in db.Users
                           where a.Id == toBeSave.Id
                           select a).FirstOrDefault();
                if (qry != null)
                {
                    db.Users.Remove(qry);
                    var qry2 = (from b in db.SynergerUser
                                where b.userId == toBeSave.Id
                                select b).FirstOrDefault();
                    if (qry2 != null)
                        db.SynergerUser.Remove(qry2);
                    db.SaveChanges();
                    trans.Commit();
                    return 0;
                }
            }
            catch(Exception ex)
            {
                trans.Rollback();
            }
            return -1;
            //db.Users.Remove(toBeSave).Where(x.id == toBeSave.Id);
            //// 研究使用者如何建立
            //var currentId = UserId;// User.Identity.GetUserId();
            //var currentCompanyId = db.Users.Where(x => x.Id == currentId).Select(x => x.CompanyID).Single();
            //toBeSave.CompanyID = currentCompanyId;
            //toBeSave.IsCompanyAdmin = false;
            //toBeSave.IsSystemAdmin = false;

            //var user = manager.FindById(toBeSave.Id);
            //if (user == null)
            //{
            //    var result = manager.Create(toBeSave, toBeSave.DefaultPassword);
            //    if (!result.Succeeded)
            //        return -1;
            //    manager.AddToRole(toBeSave.Id, ProgramConstants.normalcompany);
            //}
            //else
            //{
            //    user.Name = toBeSave.Name;
            //    user.Job = toBeSave.Job;
            //    user.Email = toBeSave.Email;
            //    user.PhoneNumber = toBeSave.PhoneNumber;
            //    user.MobileNumber = toBeSave.MobileNumber;
            //    db.SaveChanges();
            //}

            //return 0;
        }
        public int Save(User toBeSave, string UserId)
        {
            // 研究使用者如何建立
            var currentId = UserId;// User.Identity.GetUserId();
            var currentCompanyId = db.Users.Where(x => x.Id == currentId).Select(x => x.CompanyID).Single();
            toBeSave.CompanyID = currentCompanyId;
            toBeSave.IsCompanyAdmin = false;
            toBeSave.IsSystemAdmin = false;

            var user = manager.FindById(toBeSave.Id);
            if (user == null)
            {
                using (var trans = db.Database.BeginTransaction())
                {
                    try
                    {
                        string err = CScommon.FieldCheck.loginID(toBeSave.UserName);
                        if (err != "")
                            throw new Exception(err);
                        var result = manager.Create(toBeSave, toBeSave.DefaultPassword);
                        var var2 = result.Errors.ToList();
                        var var3 = var2.Count();
                        if (result.Errors.Count() > 0)
                            throw new Exception(var2[0]);
                        if (!result.Succeeded)
                            return -1;
                        var qry = db.Users.Where(x => x.UserName == toBeSave.UserName).FirstOrDefault();
                        if (qry == null)
                            throw new Exception($"使用者 {toBeSave.UserName} 建立失敗！");
                        var qry2 = db.UserAccountType.Where(x => x.UserId == UserId).FirstOrDefault();
                        if (qry2 == null)
                            throw new Exception($"目前使用者帳戶型態資料錯誤，請洽管理者！");
                        var UserAccountType = new UserAccountType();
                        UserAccountType.AccountType = qry2.AccountType;//.UserAccountType;
                        UserAccountType.UserId = qry.Id;
                        UserAccountType.StartTime = qry2.StartTime;
                        UserAccountType.EndTime = qry2.EndTime;
                        UserAccountType.Enabled = true;
                        db.UserAccountType.Add(UserAccountType);
                        db.SaveChanges();
                        trans.Commit();
                    }
                    catch (DbEntityValidationException dbe)
                    {
                        trans.Rollback();
                        var var1 = dbe.EntityValidationErrors.ToList();
                        var var2 = var1[0].ValidationErrors.ToList();
                        var var3 = var2[0].ErrorMessage;
                        string err = var3;// var1[0].ValidationErrors[0]..ToString();
                        throw new Exception(err);
                    }
                    catch (Exception ex)
                    {
                        trans.Rollback();
                        throw;
                    }
                }
                manager.AddToRole(toBeSave.Id, ProgramConstants.normalcompany);
            }
            else
            {
                manager.RemovePassword(toBeSave.Id);
                var result = manager.AddPassword(toBeSave.Id, toBeSave.DefaultPassword);
                //var result = manager.ChangePassword(toBeSave.Id, user.DefaultPassword, toBeSave.DefaultPassword);
                if (!result.Succeeded)
                {
                    manager.AddPassword(toBeSave.Id, user.DefaultPassword);
                    throw new Exception(result.Errors.ToList()[0]);
                }
                user.Name = toBeSave.Name;
                user.Job = toBeSave.Job;
                user.Email = toBeSave.Email;
                user.PhoneNumber = toBeSave.PhoneNumber;
                user.MobileNumber = toBeSave.MobileNumber;
                user.DefaultPassword = toBeSave.DefaultPassword;
                db.SaveChanges();
            }

            return 0;
        }
    }
}