using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Routing;
using Microsoft.AspNetCore.Authorization;
using Microsoft.Extensions.Logging;
using AyaNova.Models;
using AyaNova.Api.ControllerHelpers;
using AyaNova.Biz;
using Microsoft.EntityFrameworkCore;
using System.Linq;


namespace AyaNova.Api.Controllers
{
    [ApiController]
    [ApiVersion("8.0")]
    [Route("api/v{version:apiVersion}/purchase-order")]
    [Produces("application/json")]
    [Authorize]
    public class PurchaseOrderController : ControllerBase
    {
        private readonly AyContext ct;
        private readonly ILogger<PurchaseOrderController> log;
        private readonly ApiServerState serverState;

        /// <summary>
        /// ctor
        /// </summary>
        /// <param name="dbcontext"></param>
        /// <param name="logger"></param>
        /// <param name="apiServerState"></param>  
        public PurchaseOrderController(AyContext dbcontext, ILogger<PurchaseOrderController> logger, ApiServerState apiServerState)
        {
            ct = dbcontext;
            log = logger;
            serverState = apiServerState;
        }

        /// <summary>
        /// Create PurchaseOrder
        /// </summary>
        /// <param name="newObject"></param>
        /// <param name="apiVersion">From route path</param>
        /// <returns></returns>
        [HttpPost]
        public async Task<IActionResult> PostPurchaseOrder([FromBody] PurchaseOrder newObject, ApiVersion apiVersion)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
            PurchaseOrderBiz biz = PurchaseOrderBiz.GetBiz(ct, HttpContext);
            if (!Authorized.HasCreateRole(HttpContext.Items, biz.BizType))
                return StatusCode(403, new ApiNotAuthorizedResponse());
            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));
            PurchaseOrder o = await biz.CreateAsync(newObject, true);
            if (o == null)
                return BadRequest(new ApiErrorResponse(biz.Errors));
            else
                return CreatedAtAction(nameof(PurchaseOrderController.GetPurchaseOrder), new { id = o.Id, version = apiVersion.ToString() }, new ApiCreatedResponse(o));
        }

        // /// <summary>
        // /// Duplicate PurchaseOrder
        // /// (Wiki and Attachments are not duplicated)
        // /// </summary>
        // /// <param name="id">Source object id</param>
        // /// <param name="apiVersion">From route path</param>
        // /// <returns>PurchaseOrder</returns>
        // [HttpPost("duplicate/{id}")]
        // public async Task<IActionResult> DuplicatePurchaseOrder([FromRoute] long id, ApiVersion apiVersion)
        // {
        //     if (!serverState.IsOpen)
        //         return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
        //     PurchaseOrderBiz biz = PurchaseOrderBiz.GetBiz(ct, HttpContext);
        //     if (!Authorized.HasCreateRole(HttpContext.Items, biz.BizType))
        //         return StatusCode(403, new ApiNotAuthorizedResponse());
        //     if (!ModelState.IsValid)
        //         return BadRequest(new ApiErrorResponse(ModelState));
        //     PurchaseOrder o = await biz.DuplicateAsync(id);
        //     if (o == null)
        //         return BadRequest(new ApiErrorResponse(biz.Errors));
        //     else
        //         return CreatedAtAction(nameof(PurchaseOrderController.GetPurchaseOrder), new { id = o.Id, version = apiVersion.ToString() }, new ApiCreatedResponse(o));
        // }

        /// <summary>
        /// Get PurchaseOrder
        /// </summary>
        /// <param name="id"></param>
        /// <returns>PurchaseOrder</returns>
        [HttpGet("{id}")]
        public async Task<IActionResult> GetPurchaseOrder([FromRoute] long id)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
            PurchaseOrderBiz biz = PurchaseOrderBiz.GetBiz(ct, HttpContext);
            if (!Authorized.HasReadFullRole(HttpContext.Items, biz.BizType))
                return StatusCode(403, new ApiNotAuthorizedResponse());
            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));
            var o = await biz.GetAsync(id, true, true);
            if (o == null) return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));
            return Ok(ApiOkResponse.Response(o));
        }

        /// <summary>
        /// Update PurchaseOrder
        /// </summary>        
        /// <param name="updatedObject"></param>
        /// <returns></returns>
        [HttpPut]
        public async Task<IActionResult> PutPurchaseOrder([FromBody] PurchaseOrder updatedObject)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));
            PurchaseOrderBiz biz = PurchaseOrderBiz.GetBiz(ct, HttpContext);
            if (!Authorized.HasModifyRole(HttpContext.Items, biz.BizType))
                return StatusCode(403, new ApiNotAuthorizedResponse());
            var o = await biz.PutAsync(updatedObject); 
            if (o == null)
            {
                if (biz.Errors.Exists(z => z.Code == ApiErrorCode.CONCURRENCY_CONFLICT))
                    return StatusCode(409, new ApiErrorResponse(biz.Errors));
                else
                    return BadRequest(new ApiErrorResponse(biz.Errors));
            }
            return Ok(ApiOkResponse.Response(o));//Here return entire object since it's updated by the server in ways the client needs to see
        }

        /// <summary>
        /// Delete PurchaseOrder
        /// </summary>
        /// <param name="id"></param>
        /// <returns>NoContent</returns>
        [HttpDelete("{id}")]
        public async Task<IActionResult> DeletePurchaseOrder([FromRoute] long id)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));
            PurchaseOrderBiz biz = PurchaseOrderBiz.GetBiz(ct, HttpContext);
            if (!Authorized.HasDeleteRole(HttpContext.Items, biz.BizType))
                return StatusCode(403, new ApiNotAuthorizedResponse());
            if (!await biz.DeleteAsync(id))
                return BadRequest(new ApiErrorResponse(biz.Errors));
            return NoContent();
        }

        /// <summary>
        /// Get restock required list for vendor specified or any vendor if no vendor specified
        /// </summary>
        /// <param name="vendorId">optional vendor id will return matches to Part objects manufacturer, wholesaler or alternative wholesaler</param>
        /// <returns>PurchaseOrder</returns>
        [HttpGet("restock-by-vendor/{vendorId}")]
        public async Task<IActionResult> GetRestockByVendor([FromRoute] long? vendorId)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
           // PurchaseOrderBiz biz = PurchaseOrderBiz.GetBiz(ct, HttpContext);
            if (!Authorized.HasReadFullRole(HttpContext.Items, AyaType.PurchaseOrder))
                return StatusCode(403, new ApiNotAuthorizedResponse());
            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));
            if (null == vendorId)
                return Ok(ApiOkResponse.Response(await ct.ViewRestockRequired.OrderBy(z => z.RequiredQuantity).ToListAsync()));
            else
                return Ok(ApiOkResponse.Response(await ct.ViewRestockRequired.Where(z => z.ManufacturerId == vendorId || z.WholesalerId == vendorId || z.AlternativeWholesalerId == vendorId).OrderBy(z => z.RequiredQuantity).ToListAsync()));
        }


/// <summary>
        /// Get work order item part request list for vendor specified or any vendor if no vendor specified
        /// </summary>
        /// <param name="vendorId">optional vendor id will return matches to Part objects manufacturer, wholesaler or alternative wholesaler</param>
        /// <returns>PurchaseOrder</returns>
        [HttpGet("requests-by-vendor/{vendorId}")]
        public async Task<IActionResult> GetRequestsByVendor([FromRoute] long? vendorId)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
            PurchaseOrderBiz biz = PurchaseOrderBiz.GetBiz(ct, HttpContext);
            if (!Authorized.HasReadFullRole(HttpContext.Items, biz.BizType))
                return StatusCode(403, new ApiNotAuthorizedResponse());
            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));
            if (null == vendorId)
                return Ok(ApiOkResponse.Response(await ct.ViewPartRequestList.ToListAsync()));
            else
                return Ok(ApiOkResponse.Response(await ct.ViewPartRequestList.Where(z => z.WholesalerId == vendorId || z.AltWholesalerId == vendorId).ToListAsync()));
        }


        //------------


    }//eoc
}//eons