using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Asp.Versioning;
using AutoMapper;
using gehGassi.Core.Interfaces;
using gehGassi.Domain.Common;
using gehGassi.Dto.Common;
using gehGassi.Dto.Faqs;
using gehGassi.Dto.WebSite;
using gehGassi.Web.Helper;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Options;

namespace gehGassi.Web.Controllers.WebsiteApi
{
    /// <summary>
    /// Controller der der Website Zugriff auf bestimmte Daten ermöglicht
    /// </summary>
    [Authorize(AuthenticationSchemes = JwtBearerDefaults.AuthenticationScheme, Roles = "ApiUser")]
    [ApiController]
    [ApiVersion(1)]
    [Route("api/website/data")]
    [Route("api/website/v{v:apiVersion}/data")]
    public class WebSiteApiDataController : WebSiteApiBaseController
    {
        private readonly IAppUserService _appUserService;
        private readonly IFaqService _faqService;

        /// <summary>
        /// Erstellt eine neue Instanz des Controllers
        /// </summary>
        /// <param name="mapper">Instanz eines IMapper</param>
        /// <param name="localizationOptions">Instanz von LocalizationOptions</param>
        /// <param name="userService">Instanz eines IUserService</param>
        /// <param name="appUserService">Instanz eines IAppUserService</param>
        /// <param name="faqService">Instanz eines IFaqService</param>
        public WebSiteApiDataController(IMapper mapper, IOptions<LocalizationOptions> localizationOptions, IUserService userService, 
            IAppUserService appUserService, IFaqService faqService) : base(mapper, localizationOptions, userService)
        {
            _appUserService = appUserService;
            _faqService = faqService;
        }

        /// <summary>
        /// Returns a list of locations of currently active app users.
        /// </summary>
        /// <param name="skip">Number of records to skip</param>
        /// <param name="take">Number of records to take</param>
        /// <param name="type">Type of app users to select. DogOwner = 10, DogWalker = 20, Both = 30</param>
        /// <param name="timeStamp">Optional: provide a timestamp as date time offset UTC to get only records with a last update date newer than the time stamp</param>
        /// <returns>List of locations</returns>
        [HttpGet]
        [Route("GetAppUsers")]
        [Produces(typeof(AppUserLocationItemDto))]
        
        public async Task<IActionResult> GetAppUsers(int skip, int take, AppUserTypeDto type = AppUserTypeDto.Both, DateTimeOffset? timeStamp = null)
        {
            var resultList = new List<AppUserLocationItemDto>();
            var result = new AppUserLocationDto()
            {
                Skip = skip,
                Take = take,
                Items = resultList,
                TimeStamp = timeStamp
            };

            var total = await _appUserService.CountAsync(false, (AppUserType)type, timeStamp);

            result.Total = total;

            var list = await _appUserService.GetAllAsync(skip, take, (AppUserType)type, timeStamp, false);
            foreach (var appUser in list)
            {
                var item = new AppUserLocationItemDto()
                {
                    Type = (AppUserTypeDto)appUser.Type,
                    Zip = appUser.Address.Zip,
                    City = appUser.Address.City,
                    Country = appUser.Address.CountryCode,
                    Lat = appUser.Location.Y,
                    Lng = appUser.Location.X
                };
                resultList.Add(item);
            }

            return Ok(result);
        }

        /// <summary>
        /// Returns a list of FAQs by type.
        /// </summary>
        /// <param name="type">FAQ-Type. DogOwner = 10, DogWalker = 20, Both = 30</param>
        /// <returns>List of faq</returns>
        [HttpGet]
        [Route("GetFaqs")]
        [Produces(typeof(FaqDto))]
        public async Task<IActionResult> GetFaqs(FaqType type = FaqType.Both)
        {
            var result = new List<FaqDto>();

            var faqList = await _faqService.GetAllAsync(type);

            foreach (var faq in faqList)
            {
                var item = new FaqDto()
                {
                    Title = faq.Title,
                    Order = faq.Order,
                    Type = (FaqTypeDto)faq.Type,
                    Translations = new List<FaqTextDto>()
                };

                var languages = faq.GetLanguages("Question");
                foreach (var language in languages)
                {
                    var question = faq.Get("Question", language);
                    var answer = faq.Get("Answer", language);

                    var faqText = new FaqTextDto()
                    {
                        Language = language,
                        Question = question,
                        Answer = answer
                    };
                    item.Translations.Add(faqText);
                }
                result.Add(item);
            }

            return Ok(result);
        }
    }
}