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;

namespace AMESCoreStudio.WebApi.Controllers.AMES
{
    /// <summary>
    /// 異常原因維護
    /// </summary>
    [Route("api/[controller]")]
    [ApiController]
    public class ErrorReasonsController : ControllerBase
    {
        private readonly AMESContext _context;

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

        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        // GET: api/ErrorReasons
        [HttpGet]
        public async Task<ActionResult<IEnumerable<ErrorReason>>> GetErrorReason()
        {
            IQueryable<ErrorReason> q = _context.ErrorReasons;

            q = q.OrderBy(p => p.ReasonNo);

            var errorReason = await q.ToListAsync();

            return errorReason;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        // GET: api/ErrorReasons/5
        [HttpGet("{id}")]
        public async Task<ActionResult<IEnumerable<ErrorReason>>> GetErrorReason(string id)
        {
            IQueryable<ErrorReason> q = _context.ErrorReasons;
            q = q.Where(p => p.ReasonNo.Equals(id));

            var errorReason = await q.ToListAsync();

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

            return errorReason;
        }

        /// <summary>
        /// 根据異常類別獲取該類別異常原因資料
        /// </summary>
        /// <param name="no"></param>
        /// <returns></returns>
        // GET: api/ErrorReasons/Class/S
        [HttpGet("Class/{no}")]
        public async Task<ActionResult<IEnumerable<ErrorReason>>> GetErrorReasonByClass(string no)
        {
            IQueryable<ErrorReason> q = _context.ErrorReasons;

            if (no != null)
            {
                if (no != "*")
                {
                    q = q.Where(p => p.ClassNo.Equals(no));
                }
            }
            q = q.OrderBy(p => p.ClassNo + p.ReasonNo);

            var errorReason = await q.ToListAsync();

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

            return errorReason;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="id"></param>
        /// <param name="errorReason"></param>
        /// <returns></returns>
        // PUT: api/ErrorReasons/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<ActionResult<ErrorReason>> PutErrorReason(string id, [FromBody] ErrorReason errorReason)
        {
            if (id != errorReason.ReasonNo)
            {
                return BadRequest();
            }

            _context.Entry(errorReason).State = EntityState.Modified;

            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!ErrorReasonExists(id))
                {
                    return NotFound();
                }
                else
                {
                    throw;
                }
            }

            return errorReason;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="errorReason"></param>
        /// <returns></returns>
        // POST: api/ErrorReasons
        // 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<ActionResult<ErrorReason>> PostErrorReason(ErrorReason errorReason)
        {
            _context.ErrorReasons.Add(errorReason);
            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateException)
            {
                if (ErrorReasonExists(errorReason.ReasonNo))
                {
                    return Conflict();
                }
                else
                {
                    throw;
                }
            }

            return CreatedAtAction("GetErrorReason", new { id = errorReason.ReasonNo }, errorReason);
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        // DELETE: api/ErrorReasons/5
        [HttpDelete("{id}")]
        public async Task<ActionResult<ErrorReason>> DeleteErrorReason(string id)
        {
            var errorReason = await _context.ErrorReasons.Where(p => p.ReasonNo == id).FirstOrDefaultAsync();

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

            _context.ErrorReasons.Remove(errorReason);
            await _context.SaveChangesAsync();

            return errorReason;
        }

        private bool ErrorReasonExists(string id)
        {
            return _context.ErrorReasons.Any(e => e.ReasonNo == id);
        }
    }
}