using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using AMESCoreStudio.WebApi;
using AMESCoreStudio.WebApi.Models.AMES;
using AMESCoreStudio.WebApi.Models.BAS;
using AMESCoreStudio.CommonTools.Result;

namespace AMESCoreStudio.WebApi.Controllers.BAS
{
    /// <summary>
    /// 流程規則資料維護
    /// </summary>
    [Route("api/[controller]")]
    [ApiController]
    public class RulesController : ControllerBase
    {
        private readonly AMESContext _context;

        /// <summary>
        /// 
        /// </summary>
        /// <param name="context"></param>
        public RulesController(AMESContext context)
        {
            _context = context;
        }

        /// <summary>
        /// 獲取全部流程規則資料
        /// </summary>
        /// <returns></returns>
        // GET: api/Rules
        [HttpGet]
        public async Task<ActionResult<IEnumerable<Rules>>> GetRules()
        {
            IQueryable<Rules> q = _context.Ruleses;
            q = q.OrderBy(p => p.StationID + p.RuleSeq);

            var rules = await q.ToListAsync();

            foreach (var data in rules)
            {
                data.NextStation = _context.Stationses.Find(data.NextStationID);
            }

            if (rules == null)
            {
                return NotFound();
            }

            return rules;
        }

        /// <summary>
        /// 根據流程ID獲取流程規則資料
        /// </summary>
        /// <param name="id"></param>
        /// <param name="page"></param>
        /// <param name="limit"></param>
        /// <returns></returns>
        // GET: api/Rules/Flow/5
        [HttpGet("Flow/{id}")]
        public async Task<ActionResult<IEnumerable<Rules>>> GetRulesByFlow(int id, int page = 0, int limit = 10)
        {
            var query = from q1 in _context.Ruleses
                        join q2 in _context.RuleStations on new { q1.FlowRuleID,q1.StationID } equals new { q2.FlowRuleID,q2.StationID }
                        join q3 in _context.Stationses on q1.NextStationID equals q3.StationID
                        select new {
                            q2.FlowRuleID,
                            q1.StationID,
                            q1.RuleSeq,
                            q1.RuleStatus,
                            CurrStationId = q2.StationID,
                            NextStationId = q3.StationID
                        };
            if (id > 0)
            {
                query = query.Where(p => p.FlowRuleID.Equals(id));
            }

            query = query.OrderBy(p => p.RuleSeq);

            var qdata = await query.ToListAsync();
            int[] list = new int[qdata.Count];
            int[] list1 = new int[qdata.Count];
            int[] list2 = new int[qdata.Count];
            int[] list3 = new int[qdata.Count];
            string[] status1 = new string[qdata.Count];

            for (int i=0;i<list.Length;i++)
            {
                list[i] = qdata[i].StationID;
                list1[i] = qdata[i].CurrStationId;
                list2[i] = qdata[i].NextStationId;
                list3[i] = qdata[i].FlowRuleID;
                status1[i] = qdata[i].RuleStatus;
            }

            IQueryable<Rules> q = _context.Ruleses;
            //q = q.Where(p => list.Contains(p.RuleStationID) && status1.Contains(p.RuleStatus));
            q = q.Where(p => list.Contains(p.StationID) && list2.Contains(p.NextStationID) && status1.Contains(p.RuleStatus) && list3.Contains(p.FlowRuleID));
            //q = q.OrderBy(o => o.RuleStationID + o.RuleSeq);
            //q = q.OrderBy(o => o.RuleSeq);

            if (page > 0)
            {
                q = q.OrderBy(p => p.RuleSeq).Skip((page - 1) * limit).Take(limit);
            }
            else
            {
                q = q.OrderBy(p => p.RuleSeq);
            }

            var rules = await q.ToListAsync();

            for (int j = 0; j < rules.Count; j++)
            {
                //rules[j].CurrStation = _context.Stationses.Where(p1 => p1.StationID.Equals(list1[j])).FirstOrDefault();
                rules[j].RuleDesc = _context.Stationses.Where(p1 => p1.StationID.Equals(rules[j].StationID)).FirstOrDefault().StationName;
                rules[j].NextStation.StationName = _context.Stationses.Where(p2 => p2.StationID.Equals(rules[j].NextStationID)).FirstOrDefault().StationName;
            }

            if (rules == null)
            {
                return NotFound();
            }

            return rules;
        }

        /// <summary>
        /// 根據流程規則編號查詢指定單一資料
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        // GET: api/Rules/5
        [HttpGet("{id}")]
        public async Task<ActionResult<IEnumerable<Rules>>> GetRules(int id)
        {
            IQueryable<Rules> q = _context.Ruleses;

            q = q.Where(p => p.RuleID.Equals(id));

            var rules = await q.ToListAsync();

            if (rules == null)
            {
                return NotFound();
            }
            
            return rules;
        }

        /// <summary>
        /// 根據流程站別ID+状态+下一站查詢指定單一資料
        /// </summary>
        /// <param name="flowRuleID"></param>
        /// <param name="id"></param>
        /// <param name="ruleStatus"></param>
        /// <param name="nextStationId"></param>
        /// <returns></returns>
        // GET: api/Rules/5
        [Route("[action]")]
        [HttpGet]
        public async Task<ActionResult<IEnumerable<Rules>>> GetRules2(int flowRuleID,int id, string ruleStatus, int nextStationId)
        {
            IQueryable<Rules> q = _context.Ruleses;

            if (nextStationId == -1)
            {
                q = q.Where(p => p.StationID.Equals(id) && p.RuleStatus.Equals(ruleStatus) && p.FlowRuleID.Equals(flowRuleID));
            }
            else
            {
                q = q.Where(p => p.StationID.Equals(id) && p.RuleStatus.Equals(ruleStatus) && p.FlowRuleID.Equals(flowRuleID) && p.NextStationID.Equals(nextStationId));
            }

            var rules = await q.ToListAsync();

            if (rules == null)
            {
                return NotFound();
            }

            return rules;
        }

        /// <summary>
        /// 根據流程站別ID+状态+下一站查詢指定單一資料
        /// </summary>
        /// <param name="id"></param>
        /// <param name="ruleStatus"></param>
        /// <param name="nextStationId"></param>
        /// <returns></returns>
        // GET: api/Rules/5
        [Route("[action]")]
        [HttpGet]
        public async Task<ActionResult<IEnumerable<Rules>>> GetRules(int id, string ruleStatus, int nextStationId)
        {
            IQueryable<Rules> q = _context.Ruleses;

            if (nextStationId == -1)
            {
                q = q.Where(p => p.StationID.Equals(id) && p.RuleStatus.Equals(ruleStatus));
            }
            else
            {
                q = q.Where(p => p.StationID.Equals(id) && p.RuleStatus.Equals(ruleStatus) && p.NextStationID.Equals(nextStationId));
            }

            var rules = await q.ToListAsync();

            if (rules == null)
            {
                return NotFound();
            }

            return rules;
        }

        /// <summary>
        /// By流程ID 查詢
        /// </summary>
        /// <param name="id">流程ID</param>
        /// <returns></returns>
        [HttpGet("ByFlowRuleID/{id}")]
        public async Task<ActionResult<IEnumerable<Rules>>> GetRulesByFlowRuleID(int id)
        {
            var q = from q1 in _context.Ruleses
                    join q2 in _context.RuleStations on new { q1.FlowRuleID, q1.StationID } equals new { q2.FlowRuleID, q2.StationID }
                    where q2.FlowRuleID == id
                    select q1;

            var rules = await q.ToListAsync();
            return rules;
        }

        /// <summary>
        /// 更新流程规则资料
        /// </summary>
        /// <param name="id"></param>
        /// <param name="rules"></param>
        /// <returns></returns>
        // PUT: api/Rules/5
        // To protect from overposting attacks, enable the specific properties you want to bind to, for
        // more details, see https://go.microsoft.com/fwlink/?linkid=2123754.
        [HttpPut("{id}")]
        public async Task<ResultModel<Rules>> PutRules(int id, [FromBody] Rules rules)
        {
            ResultModel<Rules> result = new ResultModel<Rules>();

            if (id != rules.RuleID)
            {
                result.Msg = "流程規則編號錯誤";
                result.Success = false;
                return result;
            }

            rules.UpdateDate = DateTime.Now;
            _context.Entry(rules).State = EntityState.Modified;

            /*
            //判斷流程是否使用
            IQueryable<WipInfo> q = _context.WipInfos;

            q = q.Where(p => p.FlowRuleID.Equals(rules.FlowRuleID));
            q = q.OrderByDescending(p => p.CreateDate);

            var wipInfos = await q.ToListAsync();

            if (wipInfos.Count > 0)
            {
                result.Success = false;
                result.Msg = "流程已經在工單" + wipInfos[0].WipNO + "使用,不可修改規則";

                return result;
            }
            */

            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!RulesExists(id))
                {
                    result.Msg = "流程規則編號不存在";
                    result.Success = false;
                    return result;
                }
                else
                {
                    throw;
                }
            }

            result.Msg = "OK";
            result.Success = true;
            return result;
        }

        /// <summary>
        /// 新增流程規則資料
        /// </summary>
        /// <param name="rules"></param>
        /// <returns></returns>
        // POST: api/Rules
        // To protect from overposting attacks, enable the specific properties you want to bind to, for
        // more details, see https://go.microsoft.com/fwlink/?linkid=2123754.
        [HttpPost]
        public async Task<ResultModel<Rules>> PostRules([FromBody] Rules rules)
        {
            ResultModel<Rules> result = new ResultModel<Rules>();

            var rule = await _context.Ruleses.Where(p => p.FlowRuleID.Equals(rules.FlowRuleID) && p.StationID.Equals(rules.StationID) && p.RuleStatus.Equals(rules.RuleStatus) && p.NextStationID.Equals(rules.NextStationID)).FirstOrDefaultAsync();

            if (rule != null)
            {
                result.Success = true;
                result.Msg = "規則資料重複!";
                return result;
            }

            /*
            //判斷流程是否使用
            IQueryable<WipInfo> q = _context.WipInfos;

            q = q.Where(p => p.FlowRuleID.Equals(rules.FlowRuleID));
            q = q.OrderByDescending(p => p.CreateDate);

            var wipInfos = await q.ToListAsync();

            if (wipInfos.Count > 0)
            {
                result.Success = false;
                result.Msg = "流程已經在工單" + wipInfos[0].WipNO + "使用,不可新增規則";

                return result;
            }
            */

            Helper helper = new Helper(_context);
            rules.RuleID = helper.GetIDKey("RULE_ID").Result;

            rules.CreateDate = DateTime.Now;

            _context.Ruleses.Add(rules);

            try
            {
                await _context.SaveChangesAsync();
                result.Success = true;
                result.Msg = "OK";
            }
            catch (Exception ex)
            {
                result.Success = false;
                result.Msg = ex.InnerException.Message;
            }



            return result;
        }

        /// <summary>
        /// 刪除流程规则
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        // DELETE: api/Rules/5
        [HttpDelete("{id}")]
        public async Task<ResultModel<Rules>> DeleteRules(int id)
        {
            ResultModel<Rules> result = new ResultModel<Rules>();

            var rules = await _context.Ruleses.Where(p => p.RuleID.Equals(id)).FirstOrDefaultAsync();

            if (rules == null)
            {
                result.Success = false;
                result.Msg = "序號錯誤";
                return result;
            }

            /*
            //判斷流程是否使用
            IQueryable<WipInfo> q = _context.WipInfos;

            q = q.Where(p => p.FlowRuleID.Equals(rules.FlowRuleID));
            q = q.OrderByDescending(p => p.CreateDate);

            var wipInfos = await q.ToListAsync();

            if (wipInfos.Count > 0)
            {
                result.Success = false;
                result.Msg = "流程已經在工單" + wipInfos[0].WipNO + "使用,不可刪除";

                return result;
            }
            */

            _context.Ruleses.Remove(rules);
            try
            {
                await _context.SaveChangesAsync();
                result.Success = true;
                result.Msg = "OK";
            }
            catch (Exception ex)
            {
                result.Success = false;
                result.Msg = ex.InnerException.Message;
            }

            return result;
        }

        private bool RulesExists(int id)
        {
            return _context.Ruleses.Any(e => e.RuleID == id);
        }
    }
}