using System;
using System.Collections.Generic;
using System.Linq;
using Falcon.Extend;
using FAuth.DataBase.Tables;
using FAuth.Extensions;
using FAuth.Extensions.Account;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;

namespace FAuth.Controllers.api
{
    /// <summary>
    /// 应用程序控制器
    /// </summary>
    public class AppController:ApiControllerBase<AppController>
    {
        public AccountHelper Account { get; set; }

        public AppController(ILogger<AppController> logger,IServiceProvider service) : base(logger,service) {
            this.Account = this.Services.GetService<AccountHelper>();
        }

        /// <summary>
        /// 添加新应用
        /// </summary>
        /// <param name="appName">应用名称</param>
        /// <param name="description">应用说明</param>
        /// <returns>应用信息</returns>
        [HttpPost]
        [ProducesResponseType(typeof(Apps),200)]
        public Apps AddNewApp(string appName,string description) {
            if(appName.IsNullOrEmpty()) {
                throw new ApiArgumentNullException(nameof(appName));
            }
            var qu = this.Db.Apps.Where(m => m.Name == appName);
            if(qu.Any()) {
                throw new ApiException($"应用{appName}已经存在，不可以重复创建!");
            }
            var newApp = new Apps {
                Name = appName,
                Description = description,
            };
            this.Db.Entry(newApp).State = EntityState.Added;
            this.Db.SaveChangesAsync().Wait();
            return newApp;
        }

        /// <summary>
        /// 删除一个应用
        /// </summary>
        /// <param name="appName">应用名称</param>
        /// <returns>删除结果</returns>
        [HttpPost]
        public bool RemoveApp(string appName) {
            if(appName.IsNullOrEmpty()) {
                throw new ApiArgumentNullException(nameof(appName));
            }
            var qu = this.Db.Apps.Where(m => m.Name == appName);
            foreach(var item in qu) {
                this.Db.Entry(item).State = EntityState.Deleted;
            }
            this.Db.SaveChangesAsync().Wait();
            return true;
        }

        /// <summary>
        /// 查询app是否注册
        /// </summary>
        /// <param name="appName">app名称</param>
        /// <returns></returns>
        [HttpPost]
        [ProducesResponseType(typeof(Apps),200)]
        public Apps GetApps(string appName) {
            if(string.IsNullOrEmpty(appName))
                throw new ApiArgumentNullException(nameof(appName));
            var qu = this.Db.Apps.Where(m => m.Name == appName);
            if(qu.Any()) {
                return qu.First();
            } else {
                throw new ApiException("没有找到该应用");
            }
        }

        /// <summary>
        /// 通过管理员凭据获取应用列表
        /// </summary>
        /// <param name="adminTicket">管理员凭据</param>
        /// <returns>应用列表</returns>
        [HttpGet]
        [ProducesResponseType(typeof(IEquatable<Apps>),200)]
        public IEnumerable<Apps> GetAppList(string adminTicket) {
            if(this.Account.IsNotSystemAdmin(adminTicket)) {
                throw new ApiException("需要提供管理员票据");
            }
            var qu = this.Db.Apps;
            return qu.ToList();
        }

    }

}