using FrontendWebApi.Models;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using Repository.FrontendRepository.Interface;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
using System.Xml.Linq;

namespace FrontendWebApi.ApiControllers
{
    /// <summary>
    /// 告警紀錄
    /// </summary>
    public class AlarmController : MyBaseApiController<AlarmRecordController>
    {
        private readonly IFrontendRepository frontendRepository;

        public AlarmController
        (
            IFrontendRepository frontendRepository
        )
        {
            this.frontendRepository = frontendRepository;
        }

        [HttpPost]
        [Route("api/Alarm/GetAlarmFromObix")]
        public async Task<ActionResult<ApiResult<AlarmObj>>> GetAlarmFromObix()
        {
            ApiResult<AlarmObj> apiResult = new ApiResult<AlarmObj>(jwt_str);
            if (!jwtlife)
            {
                apiResult.Code = "5000";
                return BadRequest(apiResult);
            }
            try
            {
                var sqlString = $@"SELECT system_value FROM variable WHERE system_type = 'obixConfig' AND system_key = 'ApiBase' AND deleted = 0";
                string baseApiUrl = await frontendRepository.GetOneAsync<string>(sqlString);

                if (string.IsNullOrEmpty(baseApiUrl))
                {
                    apiResult.Code = "9998";
                    apiResult.Msg = "未找到 obixConfig baseAPI，請聯絡管理者。";
                    return BadRequest(apiResult);
                }

                string apiUrl = Path.Combine(baseApiUrl, "obix/config/Services/AlarmService/~alarmQuery/");

                using (HttpClient client = new HttpClient())
                {
                    string username = "stanGG";
                    string password = "St12345678";
                    string encoded = Convert.ToBase64String(System.Text.Encoding.GetEncoding("ISO-8859-1").GetBytes(username + ":" + password));

                    client.DefaultRequestHeaders.Add("Authorization", "Basic " + encoded);
                    // 建構 XML 數據
                    string xmlData = @$"<obj href='obix:AlarmFilter'> 
                                          <abstime name='start' val='{DateTime.Now.AddDays(-180).ToString("yyyy-MM-ddTHH:mm:ss.fff")}+08:00' />
                                          <abstime name='end' val='{DateTime.Now.ToString("yyyy-MM-ddTHH:mm:ss.fff")}+08:00'/>
                                        </obj>";
                    HttpContent content = new StringContent(xmlData, Encoding.UTF8, "application/xml");

                    var response = await client.PostAsync(apiUrl, content);
                    var resString = (await response.Content.ReadAsStringAsync()).ToString();

                    XDocument xmlDoc = XDocument.Parse(resString);

                    /*  回傳結果範例
                    <?xml version="1.0" encoding="UTF-8"?>
                    <?xml-stylesheet type='text/xsl' href='/obix/xsl'?>
                    <obj is="obix:AlarmQueryOut" xmlns="http://obix.org/ns/schema/1.0" xsi:schemaLocation="http://obix.org/ns/schema/1.0 /obix/xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
                        <list name="data" of="obix:Alarm">
                            <obj href="/obix/alarm/3378ed4a-94ff-4aca-b857-ff66083b9131" is="obix:Alarm obix:AckAlarm obix:PointAlarm obix:StatefulAlarm" display="">
                            ....
                                <str name="sourceName" val="H_E1_B1F_MVCB_MVCBH_ER"/>
                                <abstime name="timestamp" val="2023-08-08T10:30:04.473+08:00" tz="Asia/Taipei"/>
                            ....
                            </obj>
                            <obj href="/obix/alarm/f6116713-9830-4e7d-aa10-a28db29d0edc" is="obix:Alarm obix:AckAlarm obix:PointAlarm obix:StatefulAlarm" display="">
                            ....
                                <str name="sourceName" val="H_E1_B1F_MVCB_MVCBH_ER"/>
                                <abstime name="timestamp" val="2023-08-08T10:50:00.953+08:00" tz="Asia/Taipei"/>
                            ....
                            </obj>
                         </list>
                    </obj>
                    */

                    var list = xmlDoc.Descendants().Where(d => d.Name?.LocalName == "list").FirstOrDefault();
                    var objs = list.Descendants().Where(d => d.Name?.LocalName == "obj" && (d.Attribute("is")?.Value?.Contains("obix:Alarm") ?? false)).ToList();

                    // 宣告要丟出去的資料容器
                    AlarmObj alarmObj = new AlarmObj()
                    {
                        alarmorion = new List<AlarmorionString>(),
                        buildingAlarmDeviceAmount = new List<BuildingAlarmDeviceAmount>()
                    };

                    // 篩選 toState != normal
                    objs = objs.Where(d => d.Descendants().Any(dd => dd?.Name?.LocalName == "str" && dd?.Attribute("name")?.Value == "toState" && dd?.Attribute("val")?.Value != "normal")).ToList();
                    // <str name="sourceName" val="H_E1_B1F_MVCB_MVCBH_ER"/>
                    // <abstime name="timestamp" val="2023-08-08T10:30:04.473+08:00" tz="Asia/Taipei"/>
                    alarmObj.alarmorion = objs.Select(obj => new AlarmorionString()
                    {
                        alarm_timestamp = obj.Descendants().Where(d => d.Name.LocalName == "abstime" && d.Attribute("name").Value == "timestamp")
                        .Select(d =>
                        {
                            DateTime valid;
                            if (DateTime.TryParse(d.Attribute("val").Value, out valid))
                            {
                                return DateTime.Parse(d.Attribute("val").Value).ToString("yyyy-MM-dd HH:mm:ss.fff");
                            }
                            else
                            {
                                return null;
                            }
                        }).FirstOrDefault(),
                        device_number = obj.Descendants().Where(d => d.Name.LocalName == "str" && d.Attribute("name").Value == "sourceName")
                        .Select(d => d.Attribute("val").Value).Select(d => string.Join("_", d.Split("_").Take(5))).FirstOrDefault(),
                    }).ToList();

                    // obix alarm 回傳 device_number + point 取出棟別分組
                    alarmObj.buildingAlarmDeviceAmount = alarmObj.alarmorion.Where(a => a.device_number?.Contains("_") ?? false)
                        .GroupBy(g => g.device_number.Split("_")[0]).Select(g => new BuildingAlarmDeviceAmount()
                    {
                        building_tag = g.Key,
                        device_amount = g.Count()
                    }).ToList();

                    apiResult.Data = alarmObj;

                }

                apiResult.Msg = "讀取成功";
                apiResult.Code = "0000";
            }
            catch (Exception exception)
            {
                apiResult.Code = "9999";
                apiResult.Msg = "系統內部錯誤，請聯絡管理者。";
                Logger.LogError("【" + controllerName + "/" + actionName + "】" + exception.Message);
                return Ok(apiResult);
            }
            return Ok(apiResult);
        }
    }
}