/*
 * T&J Central Bank API
 *
 * API documentation for T&J Central Bank's digital wallets
 *
 * OpenAPI spec version: 1.0.0
 * 
 * Generated by: https://github.com/swagger-api/swagger-codegen.git
 */
using System;
using System.Collections.Generic;
using Microsoft.AspNetCore.Mvc;
using Swashbuckle.AspNetCore.Annotations;
using Swashbuckle.AspNetCore.SwaggerGen;
using Newtonsoft.Json;
using System.ComponentModel.DataAnnotations;
using IO.Swagger.Attributes;
using IO.Swagger.Security;
using Microsoft.AspNetCore.Authorization;
using IO.Swagger.Models.dto;
using System.Linq;
using System.Security.Claims;
using System.Threading.Tasks;
using IO.Swagger.Repositories;
using AutoMapper;

namespace IO.Swagger.Controllers
{
    /// <summary>
    /// 
    /// </summary>
    [ApiController]
    public class CurrencyApiController : ControllerBase
    {
        private readonly ICurrencyRepository repo;
        private readonly IMapper mapper;

        public CurrencyApiController(ICurrencyRepository repo, IMapper mapper)
        {
            this.repo = repo ?? throw new ArgumentNullException(nameof(repo));
            this.mapper = mapper ?? throw new ArgumentNullException(nameof(mapper));
        }

        /// <summary>
        /// Add a digital asset to the user&#x27;s collection
        /// </summary>
        /// <param name="body"></param>
        /// <response code="201">Successful asset addition</response>
        /// <response code="400">Bad Request</response>
        /// <response code="401">Unauthorized</response>
        [HttpPost]
        [Route("/v1/api/currency/addAsset")]
        [Authorize(AuthenticationSchemes = BearerAuthenticationHandler.SchemeName)]
        [ValidateModelState]
        [SwaggerOperation("AddDigitalAssetToCollection")]
        public virtual IActionResult AddDigitalAssetToCollection([FromBody]CurrencyAddAssetBody body)
        { 
            //TODO: Uncomment the next line to return response 201 or use other options such as return this.NotFound(), return this.BadRequest(..), ...
            // return StatusCode(201);

            //TODO: Uncomment the next line to return response 400 or use other options such as return this.NotFound(), return this.BadRequest(..), ...
            // return StatusCode(400);

            //TODO: Uncomment the next line to return response 401 or use other options such as return this.NotFound(), return this.BadRequest(..), ...
            // return StatusCode(401);

            throw new NotImplementedException();
        }

        /// <summary>
        /// Create a new collection of digital assets owned by the user
        /// </summary>
        /// <param name="body"></param>
        /// <response code="201">Successful collection creation</response>
        /// <response code="400">Bad Request</response>
        /// <response code="401">Unauthorized</response>
        [HttpPost]
        [Route("/v1/api/currency/createCollection")]
        [Authorize(AuthenticationSchemes = BearerAuthenticationHandler.SchemeName)]
        [ValidateModelState]
        [SwaggerOperation("CreateAssetCollection")]
        public virtual IActionResult CreateAssetCollection([FromBody]CurrencyCreateCollectionBody body)
        { 
            //TODO: Uncomment the next line to return response 201 or use other options such as return this.NotFound(), return this.BadRequest(..), ...
            // return StatusCode(201);

            //TODO: Uncomment the next line to return response 400 or use other options such as return this.NotFound(), return this.BadRequest(..), ...
            // return StatusCode(400);

            //TODO: Uncomment the next line to return response 401 or use other options such as return this.NotFound(), return this.BadRequest(..), ...
            // return StatusCode(401);

            throw new NotImplementedException();
        }

        /// <summary>
        /// Create a new currency type
        /// </summary>
        /// <param name="body"></param>
        /// <response code="201">Currency type created successfully</response>
        /// <response code="400">Bad Request</response>
        /// <response code="401">Unauthorized</response>
        /// <response code="422">Unprocessable Content</response>
        [HttpPost]
        [Route("/v1/api/currency/create")]
        [Authorize(AuthenticationSchemes = BearerAuthenticationHandler.SchemeName)]
        [ValidateModelState]
        [SwaggerOperation("CreateCurrency")]
        [ProducesResponseType(typeof(IEnumerable<string>), 400)]
        public virtual async Task<IActionResult> CreateCurrency([FromBody]CurrencyCreateBody body)
        {
            var userIdString = HttpContext.User.Claims.First(c => c.Type == ClaimTypes.NameIdentifier).Value;
            if (!int.TryParse(userIdString, out int userId))
                return Unauthorized();

            if (!ModelState.IsValid)
                return BadRequest(ModelState.Values.SelectMany(v => v.Errors.Select(e => e.ErrorMessage)));

            var createdCurr = await repo.CreateCurrency(body, userId);
            return createdCurr ? StatusCode(201) : StatusCode(422);
        }

        /// <summary>
        /// Mint additional units of a currency
        /// </summary>
        /// <param name="body"></param>
        /// <response code="200">Successful minting</response>
        /// <response code="400">Bad Request</response>
        /// <response code="401">Unauthorized</response>
        /// <response code="409">Conflict - User is not owner or currency does not exist</response>
        [HttpPost]
        [Route("/v1/api/currency/mint")]
        [Authorize(AuthenticationSchemes = BearerAuthenticationHandler.SchemeName)]
        [ValidateModelState]
        [SwaggerOperation("MintCurrency")]
        [ProducesResponseType(typeof(IEnumerable<string>), 400)]
        public virtual async Task<IActionResult> MintCurrency([FromBody]CurrencyMintBody body)
        {
            var userIdString = HttpContext.User.Claims.First(c => c.Type == ClaimTypes.NameIdentifier).Value;
            if (!int.TryParse(userIdString, out int userId))
                return Unauthorized();
            if (!ModelState.IsValid)
                return BadRequest(ModelState.Values.SelectMany(v => v.Errors.Select(e => e.ErrorMessage)));

            var minted = await repo.MintCurrency(body, userId);
            return minted ? Ok() : StatusCode(409);
        }

        /// <summary>
        /// Get all Currencies
        /// </summary>
        /// <response code="200">Returns all known currencies</response>
        /// <response code="401">Unauthorized</response>
        [HttpPost]
        [Route("/v1/api/currency/getAll")]
        [Authorize(AuthenticationSchemes = BearerAuthenticationHandler.SchemeName)]
        [ValidateModelState]
        [SwaggerOperation("GetAllCurrencies")]
        [ProducesResponseType(typeof(IEnumerable<CurrencyInfoDto>), 200)]
        public virtual async Task<IActionResult> GetAllCurrencies()
        {
            var userIdString = HttpContext.User.Claims.First(c => c.Type == ClaimTypes.NameIdentifier).Value;
            if (!int.TryParse(userIdString, out int userId))
                return Unauthorized();

            var rawCurrencies = await repo.GetAllCurrencies();
            var res = new List<CurrencyInfoDto>();
            foreach (var raw in rawCurrencies)
            {
                var c = mapper.Map<CurrencyInfoDto>(raw);
                c.IsOwner = raw.UserId == userId;
                res.Add(c);
            }
            return Ok(res);
        }
    }
}