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}/quote")]
    [Produces("application/json")]
    [Authorize]
    public class QuoteController : ControllerBase
    {
        private readonly AyContext ct;
        private readonly ILogger<QuoteController> log;
        private readonly ApiServerState serverState;


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


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

            //Instantiate the business object handler
            QuoteBiz biz = QuoteBiz.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));
        }



        /// <summary>
        /// Put (update) Quote
        /// </summary>
        /// <param name="id"></param>
        /// <param name="inObj"></param>
        /// <returns></returns>
        [HttpPut("{id}")]
        public async Task<IActionResult> PutQuote([FromRoute] long id, [FromBody] Quote 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       
            QuoteBiz biz = QuoteBiz.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 { Concurrency = o.Concurrency }));
        }






        /// <summary>
        /// Create Quote
        /// </summary>
        /// <param name="quoteTemplateId"></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">From route path</param>
        /// <returns>A created workorder ready to fill out</returns>
        [HttpPost("Create")]
        public async Task<IActionResult> PostQuote([FromQuery] long? quoteTemplateId, long? customerId, uint? serial, ApiVersion apiVersion)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));

            //Instantiate the business object handler
            QuoteBiz biz = QuoteBiz.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
            Quote o = await biz.CreateAsync(quoteTemplateId,customerId, serial);
            if (o == null)
                return BadRequest(new ApiErrorResponse(biz.Errors));
            else
                return CreatedAtAction(nameof(QuoteController.GetQuote), new { id = o.Id, version = apiVersion.ToString() }, new ApiCreatedResponse(o));


        }

        /// <summary>
        /// Duplicate Quote
        /// </summary>
        /// <param name="id">Create a duplicate of this items id</param>
        /// <param name="apiVersion">From route path</param>
        /// <returns></returns>
        [HttpPost("duplicate/{id}")]
        public async Task<IActionResult> DuplicateQuote([FromRoute] long id, ApiVersion apiVersion)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));

            //Instantiate the business object handler
            QuoteBiz biz = QuoteBiz.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
            Quote o = await biz.DuplicateAsync(oSrc);
            if (o == null)
                return BadRequest(new ApiErrorResponse(biz.Errors));
            else
                return CreatedAtAction(nameof(QuoteController.GetQuote), new { id = o.Id, version = apiVersion.ToString() }, new ApiCreatedResponse(o));

        }



        /// <summary>
        /// Delete Quote
        /// </summary>
        /// <param name="id"></param>
        /// <returns>Ok</returns>
        [HttpDelete("{id}")]
        public async Task<IActionResult> DeleteQuote([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
            QuoteBiz biz = QuoteBiz.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();
        }





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


    }//eoc
}//eons