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


namespace AyaNova.Api.Controllers
{

    [ApiController]
    [ApiVersion("8.0")]
    [Route("api/v{version:apiVersion}/[controller]")]
    [Produces("application/json")]
    [Authorize]
    public class WorkOrderController : ControllerBase
    {
        private readonly AyContext ct;
        private readonly ILogger<WorkOrderController> log;
        private readonly ApiServerState serverState;


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


        #region WorkOrder top level routes

        /// <summary>
        /// Get full WorkOrder object
        /// </summary>
        /// <param name="id"></param>
        /// <returns>A single WorkOrder</returns>
        [HttpGet("{id}")]
        public async Task<IActionResult> GetWorkOrder([FromRoute] long id)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));

            //Instantiate the business object handler
            WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);

            //NOTE: This is the first check and often the only check but in some cases with some objects this will also need to check biz object rules 
            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);
            if (o == null)
                return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));

            // NOTE: HERE would be the second check of biz rules before returning the object
            // in cases where there is also a business rule to affect retrieval on top of basic rights

            return Ok(ApiOkResponse.Response(o, !Authorized.HasModifyRole(HttpContext.Items, biz.BizType)));
        }

        //TODO: GET BY RELATIVE
        //get by descendent type and id




        /// <summary>
        /// Put (update) WorkOrder
        /// </summary>
        /// <param name="id"></param>
        /// <param name="inObj"></param>
        /// <returns></returns>
        [HttpPut("{id}")]
        public async Task<IActionResult> PutWorkOrder([FromRoute] long id, [FromBody] WorkOrder inObj)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));

            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));

            //Instantiate the business object handler       
            WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);

            var o = await biz.GetAsync(id, false);
            if (o == null)
                return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));

            if (!Authorized.HasModifyRole(HttpContext.Items, biz.BizType))
                return StatusCode(403, new ApiNotAuthorizedResponse());

            try
            {
                if (!await biz.PutAsync(o, inObj))
                    return BadRequest(new ApiErrorResponse(biz.Errors));
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!await biz.ExistsAsync(id))
                    return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));
                else
                    return StatusCode(409, new ApiErrorResponse(ApiErrorCode.CONCURRENCY_CONFLICT));
            }
            return Ok(ApiOkResponse.Response(new { ConcurrencyToken = o.ConcurrencyToken }, true));
        }




        /// <summary>
        /// Post Workorder
        /// </summary>
        /// <param name="inObj"></param>
        /// <param name="apiVersion">Automatically filled from route path, no need to specify in body</param>
        /// <returns></returns>
        [HttpPost]
        public async Task<IActionResult> PostWorkOrder([FromBody] WorkOrder inObj, ApiVersion apiVersion)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));

            //Instantiate the business object handler
            WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);

            //If a user has change roles
            if (!Authorized.HasCreateRole(HttpContext.Items, biz.BizType))
                return StatusCode(403, new ApiNotAuthorizedResponse());

            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));

            //Create and validate
            WorkOrder o = await biz.CreateAsync(inObj);
            if (o == null)
                return BadRequest(new ApiErrorResponse(biz.Errors));
            else
                return CreatedAtAction(nameof(WorkOrderController.GetWorkOrder), new { id = o.Id, version = apiVersion.ToString() }, new ApiCreatedResponse(o));

        }


        // /// <summary>
        // /// Post WorkOrder
        // /// </summary>
        // /// <param name="workorderTemplateId"></param>
        // /// <param name="customerId"></param>
        // /// <param name="serial">force a workorder number, leave null to autogenerate the next one in sequence (mostly used for import)</param>
        // /// <param name="apiVersion">Automatically filled from route path, no need to specify in body</param>
        // /// <returns>A created workorder ready to fill out</returns>
        // [HttpPost("Create")]
        // public async Task<IActionResult> PostWorkOrder([FromQuery] long? workorderTemplateId, long? customerId, uint? serial, ApiVersion apiVersion)
        // {
        //     if (!serverState.IsOpen)
        //         return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));

        //     //Instantiate the business object handler
        //     WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);

        //     //If a user has change roles
        //     if (!Authorized.HasCreateRole(HttpContext.Items, biz.BizType))
        //         return StatusCode(403, new ApiNotAuthorizedResponse());

        //     if (!ModelState.IsValid)
        //         return BadRequest(new ApiErrorResponse(ModelState));

        //     //Create and validate
        //     WorkOrder o = await biz.CreateAsync(workorderTemplateId,customerId, serial);
        //     if (o == null)
        //         return BadRequest(new ApiErrorResponse(biz.Errors));
        //     else
        //         return CreatedAtAction(nameof(WorkOrderController.GetWorkOrder), new { id = o.Id, version = apiVersion.ToString() }, new ApiCreatedResponse(o));
        // }

        //TODO: CreateFromTemplate(templateid)
        //TODO: Createfromquote(quoteid)
        //todo: createfrompm(pmid)




        /// <summary>
        /// Duplicate WorkOrder
        /// </summary>
        /// <param name="id">Create a duplicate of this items id</param>
        /// <param name="apiVersion">Automatically filled from route path, no need to specify in body</param>
        /// <returns></returns>
        [HttpPost("duplicate/{id}")]
        public async Task<IActionResult> DuplicateWorkOrder([FromRoute] long id, ApiVersion apiVersion)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));

            //Instantiate the business object handler
            WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);

            //If a user has change roles
            if (!Authorized.HasCreateRole(HttpContext.Items, biz.BizType))
                return StatusCode(403, new ApiNotAuthorizedResponse());

            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));

            var oSrc = await biz.GetAsync(id, false);
            if (oSrc == null)
                return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));

            //Create and validate
            WorkOrder o = await biz.DuplicateAsync(oSrc);
            if (o == null)
                return BadRequest(new ApiErrorResponse(biz.Errors));
            else
                return CreatedAtAction(nameof(WorkOrderController.GetWorkOrder), new { id = o.Id, version = apiVersion.ToString() }, new ApiCreatedResponse(o));

        }



        /// <summary>
        /// Delete WorkOrder
        /// </summary>
        /// <param name="id"></param>
        /// <returns>Ok</returns>
        [HttpDelete("{id}")]
        public async Task<IActionResult> DeleteWorkOrder([FromRoute] long id)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));

            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));

            //Instantiate the business object handler
            WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);

            var o = await biz.GetAsync(id, false);
            if (o == null)
                return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));

            if (!Authorized.HasDeleteRole(HttpContext.Items, biz.BizType))
                return StatusCode(403, new ApiNotAuthorizedResponse());

            if (!await biz.DeleteAsync(o))
                return BadRequest(new ApiErrorResponse(biz.Errors));

            return NoContent();
        }

        #endregion WorkorderTopLevel routes


        #region WorkOrder Item
        //TODO: Plot exact routes needed here, not all are needed, particularly the collection ones
        //but maybe handy?  Like do I need delete on entire woitems collection?
        //WorkOrder/{woid}/WorkorderItems <- all workorderitems, post to add new, put to update all as a collection
        //WorkOrder/{woid}/WorkOrderItems/{woitemid} <- CRUD single woitemid


        //  /// <summary>
        //         /// Get full WorkOrder object
        //         /// </summary>
        //         /// <param name="id"></param>
        //         /// <returns>A single WorkOrder</returns>
        //         [HttpGet("{id}")]
        //         public async Task<IActionResult> GetWorkOrder([FromRoute] long id)
        //         {
        //             if (!serverState.IsOpen)
        //                 return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));

        //             //Instantiate the business object handler
        //             WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);

        //             //NOTE: This is the first check and often the only check but in some cases with some objects this will also need to check biz object rules 
        //             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);
        //             if (o == null)
        //                 return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));

        //             // NOTE: HERE would be the second check of biz rules before returning the object
        //             // in cases where there is also a business rule to affect retrieval on top of basic rights

        //             return Ok(ApiOkResponse.Response(o, !Authorized.HasModifyRole(HttpContext.Items, biz.BizType)));
        //         }

        //         //TODO: GET BY RELATIVE
        //         //get by descendent type and id




        //         /// <summary>
        //         /// Put (update) WorkOrder
        //         /// </summary>
        //         /// <param name="id"></param>
        //         /// <param name="inObj"></param>
        //         /// <returns></returns>
        //         [HttpPut("{id}")]
        //         public async Task<IActionResult> PutWorkOrder([FromRoute] long id, [FromBody] WorkOrder inObj)
        //         {
        //             if (!serverState.IsOpen)
        //                 return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));

        //             if (!ModelState.IsValid)
        //                 return BadRequest(new ApiErrorResponse(ModelState));

        //             //Instantiate the business object handler       
        //             WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);

        //             var o = await biz.GetAsync(id, false);
        //             if (o == null)
        //                 return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));

        //             if (!Authorized.HasModifyRole(HttpContext.Items, biz.BizType))
        //                 return StatusCode(403, new ApiNotAuthorizedResponse());

        //             try
        //             {
        //                 if (!await biz.PutAsync(o, inObj))
        //                     return BadRequest(new ApiErrorResponse(biz.Errors));
        //             }
        //             catch (DbUpdateConcurrencyException)
        //             {
        //                 if (!await biz.ExistsAsync(id))
        //                     return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));
        //                 else
        //                     return StatusCode(409, new ApiErrorResponse(ApiErrorCode.CONCURRENCY_CONFLICT));
        //             }
        //             return Ok(ApiOkResponse.Response(new { ConcurrencyToken = o.ConcurrencyToken }, true));
        //         }




        //         /// <summary>
        //         /// Post Workorder
        //         /// </summary>
        //         /// <param name="inObj"></param>
        //         /// <param name="apiVersion">Automatically filled from route path, no need to specify in body</param>
        //         /// <returns></returns>
        //         [HttpPost]
        //         public async Task<IActionResult> PostWorkOrder([FromBody] WorkOrder inObj, ApiVersion apiVersion)
        //         {
        //             if (!serverState.IsOpen)
        //                 return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));

        //             //Instantiate the business object handler
        //             WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);

        //             //If a user has change roles
        //             if (!Authorized.HasCreateRole(HttpContext.Items, biz.BizType))
        //                 return StatusCode(403, new ApiNotAuthorizedResponse());

        //             if (!ModelState.IsValid)
        //                 return BadRequest(new ApiErrorResponse(ModelState));

        //             //Create and validate
        //             WorkOrder o = await biz.CreateAsync(inObj);
        //             if (o == null)
        //                 return BadRequest(new ApiErrorResponse(biz.Errors));
        //             else
        //                 return CreatedAtAction(nameof(WorkOrderController.GetWorkOrder), new { id = o.Id, version = apiVersion.ToString() }, new ApiCreatedResponse(o));

        //         }






        /// <summary>
        /// Delete WorkOrderItems
        /// </summary>
        /// <param name="workOrderId"></param>
        /// <returns>Ok</returns>
        [HttpDelete("{WorkOrderId}/WorkorderItems/")]
        public async Task<IActionResult> DeleteWorkOrderItems([FromRoute] long workOrderId)
        {
            ////WorkOrder/{woid}/WorkorderItems <- all workorderitems, post to add new, put to update all as a collection
            ///WorkOrder/{WorkOrderId}/WorkorderItems
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));

            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));

            //Instantiate the business object handler
            WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);

            var o = await biz.GetAsync(workOrderId, false);
            if (o == null)
                return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));

            if (!Authorized.HasDeleteRole(HttpContext.Items, biz.BizType))
                return StatusCode(403, new ApiNotAuthorizedResponse());

            //stubbed out for now just to see routes
            // if (!await biz.DeleteItemsAsync(o))
            //     return BadRequest(new ApiErrorResponse(biz.Errors));

            return NoContent();
        }

        /// <summary>
        /// Delete WorkOrderItems
        /// </summary>
        /// <param name="workOrderId"></param>
        /// <param name="workOrderItemId"></param>
        /// <returns>Ok</returns>
        [HttpDelete("{WorkOrderId}/WorkorderItems/{WorkOrderItemId}")]
        public async Task<IActionResult> DeleteWorkOrderItem([FromRoute] long workOrderId, [FromRoute] long workOrderItemId)
        {
            ////WorkOrder/{woid}/WorkorderItems <- all workorderitems, post to add new, put to update all as a collection
            ///WorkOrder/{WorkOrderId}/WorkorderItems
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));

            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));

            //Instantiate the business object handler
            WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);

            if (!Authorized.HasDeleteRole(HttpContext.Items, biz.BizType))
                return StatusCode(403, new ApiNotAuthorizedResponse());

            var o = await biz.GetAsync(workOrderId, false);
            if (o == null)
                return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));
            //Make sure the item exists first before getting into it
            if (!o.WorkorderItems.Exists(m => m.Id == workOrderItemId))
                return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));



            //stubbed out for now just to see routes
            // if (!await biz.DeleteItemsAsync(o))
            //     return BadRequest(new ApiErrorResponse(biz.Errors));

            return NoContent();
        }



        #endregion workorderitem


        #region WorkOrderItemLabor

        #endregion WorkOrderItemLabor


        #region WorkOrderItemPart

        #endregion WorkOrderItemPart

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


    }//eoc
}//eons