using System.Linq;
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}/workorders")]
    [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>
        /// Create WorkOrder "header"
        /// </summary>
        /// <param name="newObject">WorkOrder top level only, no descendents are evaluated</param>
        /// <param name="apiVersion">From route path</param>
        /// <returns>WorkOrder "header" object</returns>
        [HttpPost]
        public async Task<IActionResult> PostWorkOrder([FromBody] WorkOrder newObject, ApiVersion apiVersion)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
            WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);
            if (!Authorized.HasCreateRole(HttpContext.Items, biz.BizType))
                return StatusCode(403, new ApiNotAuthorizedResponse());
            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));
            WorkOrder o = await biz.CreateAsync(newObject);
            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>
        /// Duplicate WorkOrder
        /// (Wiki and Attachments are not duplicated)
        /// </summary>
        /// <param name="id">Source object id</param>
        /// <param name="apiVersion">From route path</param>
        /// <returns>Full WorkOrder object including all descendents</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));
            WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);
            if (!Authorized.HasCreateRole(HttpContext.Items, biz.BizType))
                return StatusCode(403, new ApiNotAuthorizedResponse());
            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));
            WorkOrder o = await biz.DuplicateAsync(id);
            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>
        /// Get full WorkOrder object
        /// </summary>
        /// <param name="id"></param>
        /// <returns>Entire WorkOrder object including all descendents</returns>
        [HttpGet("{id}")]
        public async Task<IActionResult> GetWorkOrder([FromRoute] long id)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
            WorkOrderBiz biz = WorkOrderBiz.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);
            if (o == null) return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));
            return Ok(ApiOkResponse.Response(o, !Authorized.HasModifyRole(HttpContext.Items, biz.BizType)));
        }


        /// <summary>
        /// Put (update) WorkOrder
        /// This route does not evaluate nor update nor return the entire WorkOrder object graph
        /// only the "header" or top level
        /// Descendent objects must be updated via their individual routes seperately
        /// </summary>
        /// <param name="id">WorkOrder id</param>
        /// <param name="updatedObject">WorkOrder top level only, no descendents are evaluated</param>
        /// <returns>New concurrency token</returns>
        [HttpPut("{id}")]
        public async Task<IActionResult> PutWorkOrder([FromRoute] long id, [FromBody] WorkOrder updatedObject)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));
            WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);
            if (!Authorized.HasModifyRole(HttpContext.Items, biz.BizType))
                return StatusCode(403, new ApiNotAuthorizedResponse());
            var o = await biz.PutAsync(id, updatedObject);
            if (o == null)
            {
                if (biz.Errors.Exists(m => m.Code == ApiErrorCode.CONCURRENCY_CONFLICT))
                    return StatusCode(409, new ApiErrorResponse(biz.Errors));
                else
                    return BadRequest(new ApiErrorResponse(biz.Errors));
            }
            return Ok(ApiOkResponse.Response(new { ConcurrencyToken = o.ConcurrencyToken }, true));
        }


        //TODO: will need to traverse, don't need it now for PROPOSAL testing so not coding it yet
        // /// <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 WorkOrderItem
        /// <summary>
        /// Create WorkOrderItem
        /// </summary>       
        /// <param name="newObject">WorkOrderItem level only no descendents</param>
        /// <param name="apiVersion"></param>
        /// <returns>WorkOrderItem object (no descendents)</returns>
        [HttpPost("items")]
        public async Task<IActionResult> PostWorkOrderItem([FromBody] WorkOrderItem newObject, ApiVersion apiVersion)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
            WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);
            if (!Authorized.HasCreateRole(HttpContext.Items, AyaType.WorkOrderItem))
                return StatusCode(403, new ApiNotAuthorizedResponse());
            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));
            WorkOrderItem o = await biz.CreateItemAsync(newObject);
            if (o == null)
                return BadRequest(new ApiErrorResponse(biz.Errors));
            else
                return CreatedAtAction(nameof(WorkOrderController.GetWorkOrderItem), new { id = o.Id, version = apiVersion.ToString() }, new ApiCreatedResponse(o));
        }


        /// <summary>
        /// Get WorkOrderItem object
        /// </summary>
        /// <param name="WorkOrderItemId"></param>
        /// <returns>A single WorkOrderItem</returns>
        [HttpGet("items/{WorkOrderItemId}")]
        public async Task<IActionResult> GetWorkOrderItem([FromRoute] long WorkOrderItemId)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
            WorkOrderBiz biz = WorkOrderBiz.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.GetItemAsync(WorkOrderItemId);
            if (o == null)
                return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));
            return Ok(ApiOkResponse.Response(o, !Authorized.HasModifyRole(HttpContext.Items, AyaType.WorkOrderItem)));
        }



        // /// <summary>
        // /// Put (update) WorkOrderItem
        // /// </summary>
        // /// <param name="id"></param>
        // /// <param name="updatedObject"></param>
        // /// <returns></returns>
        // [HttpPut("items/{WorkOrderItemId}")]
        // public async Task<IActionResult> PutWorkOrderItem([FromRoute] long id, [FromBody] WorkOrderItem updatedObject)
        // {
        //     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, updatedObject))
        //     //         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));
        //     return StatusCode(501);
        // }






        // /// <summary>
        // /// Delete WorkOrderItem
        // /// </summary>      
        // /// <param name="workOrderItemId"></param>
        // /// <returns>Ok-no content</returns>
        // [HttpDelete("items/{WorkOrderItemId}")]
        // public async Task<IActionResult> DeleteWorkOrderItem([FromRoute] long workOrderItemId)
        // {
        //     //NOTE: we don't need the workorder id in the route because the workorder item must contain the workorder id anyway

        //     //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());

        //     //*******************************************************************************
        //     //NOTE: I'm thinking there should be no db access in controller
        //     //let the biz object return not found if necessary
        //     //*******************************************************************************

        //     // 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();

        //     return StatusCode(501);
        // }



        #endregion workorderitem

        #region WorkOrderItemLabor

        /// <summary>
        /// Create WorkOrderItemLabor
        /// </summary>       
        /// <param name="newObject">WorkOrderItemLabor level only no descendents</param>
        /// <param name="apiVersion"></param>
        /// <returns>WorkOrderItemLabor object (no descendents)</returns>
        [HttpPost("items/labors")]
        public async Task<IActionResult> PostWorkOrderItemLabor([FromBody] WorkOrderItemLabor newObject, ApiVersion apiVersion)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
            WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);
            if (!Authorized.HasCreateRole(HttpContext.Items, AyaType.WorkOrderItemLabor))
                return StatusCode(403, new ApiNotAuthorizedResponse());
            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));
            WorkOrderItemLabor o = await biz.CreateLaborAsync(newObject);
            if (o == null)
                return BadRequest(new ApiErrorResponse(biz.Errors));
            else
                return CreatedAtAction(nameof(WorkOrderController.GetWorkOrderItemLabor), new { id = o.Id, version = apiVersion.ToString() }, new ApiCreatedResponse(o));
        }


        /// <summary>
        /// Get WorkOrderItemLabor object
        /// </summary>
        /// <param name="WorkOrderItemLaborId"></param>
        /// <returns>A single WorkOrderItemLabor</returns>
        [HttpGet("items/labors/{WorkOrderItemLaborId}")]
        public async Task<IActionResult> GetWorkOrderItemLabor([FromRoute] long WorkOrderItemLaborId)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
            WorkOrderBiz biz = WorkOrderBiz.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.GetLaborAsync(WorkOrderItemLaborId);
            if (o == null)
                return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));
            return Ok(ApiOkResponse.Response(o, !Authorized.HasModifyRole(HttpContext.Items, AyaType.WorkOrderItemLabor)));
        }
        #endregion WorkOrderItemLabor

        #region WorkOrderItemPart

       
        /// <summary>
        /// Create WorkOrderItemPart
        /// </summary>       
        /// <param name="newObject">WorkOrderItemPart level only no descendents</param>
        /// <param name="apiVersion"></param>
        /// <returns>WorkOrderItemPart object (no descendents)</returns>
        [HttpPost("items/parts")]
        public async Task<IActionResult> PostWorkOrderItemPart([FromBody] WorkOrderItemPart newObject, ApiVersion apiVersion)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
            WorkOrderBiz biz = WorkOrderBiz.GetBiz(ct, HttpContext);
            if (!Authorized.HasCreateRole(HttpContext.Items, AyaType.WorkOrderItemPart))
                return StatusCode(403, new ApiNotAuthorizedResponse());
            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));
            WorkOrderItemPart o = await biz.CreatePartAsync(newObject);
            if (o == null)
                return BadRequest(new ApiErrorResponse(biz.Errors));
            else
                return CreatedAtAction(nameof(WorkOrderController.GetWorkOrderItemPart), new { id = o.Id, version = apiVersion.ToString() }, new ApiCreatedResponse(o));
        }


        /// <summary>
        /// Get WorkOrderItemPart object
        /// </summary>
        /// <param name="WorkOrderItemPartId"></param>
        /// <returns>A single WorkOrderItemPart</returns>
        [HttpGet("items/parts/{WorkOrderItemPartId}")]
        public async Task<IActionResult> GetWorkOrderItemPart([FromRoute] long WorkOrderItemPartId)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
            WorkOrderBiz biz = WorkOrderBiz.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.GetPartAsync(WorkOrderItemPartId);
            if (o == null)
                return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));
            return Ok(ApiOkResponse.Response(o, !Authorized.HasModifyRole(HttpContext.Items, AyaType.WorkOrderItemPart)));
        }

        #endregion WorkOrderItemPart

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


    }//eoc
}//eons