using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Authorization;
using System.Collections.Generic;
using Microsoft.AspNetCore.Http;
using Oqtane.Shared;
using Oqtane.Enums;
using Oqtane.Infrastructure;
using SZUAbsolventenverein.Module.EventRegistration.Services;
using Oqtane.Controllers;
using System.Net;
using System.Threading.Tasks;

namespace SZUAbsolventenverein.Module.EventRegistration.Controllers
{
    [Route(ControllerRoutes.ApiRoute)]
    public class EventRegistrationController : ModuleControllerBase
    {
        private readonly IEventRegistrationService _EventRegistrationService;

        public EventRegistrationController(IEventRegistrationService EventRegistrationService, ILogManager logger, IHttpContextAccessor accessor) : base(logger, accessor)
        {
            _EventRegistrationService = EventRegistrationService;
        }

        // GET: api/<controller>?moduleid=x
        [HttpGet]
        [Authorize(Policy = PolicyNames.ViewModule)]
        public async Task<IEnumerable<Models.Event>> Get(string moduleid)
        {
            int ModuleId;
            if (int.TryParse(moduleid, out ModuleId) && IsAuthorizedEntityId(EntityNames.Module, ModuleId))
            {
                return await _EventRegistrationService.GetEventsAsync(ModuleId);
            }
            else
            {
                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized EventRegistration Get Attempt {ModuleId}", moduleid);
                HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
                return null;
            }
        }

        // GET api/<controller>/5
        [HttpGet("{id}/{moduleid}")]
        [Authorize(Policy = PolicyNames.ViewModule)]
        public async Task<Models.Event> Get(int id, int moduleid)
        {
            Models.Event EventRegistration = await _EventRegistrationService.GetEventAsync(id, moduleid);
            if (EventRegistration != null && IsAuthorizedEntityId(EntityNames.Module, EventRegistration.ModuleId))
            {
                return EventRegistration;
            }
            else
            { 
                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized EventRegistration Get Attempt {EventRegistrationId} {ModuleId}", id, moduleid);
                HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
                return null;
            }
        }

        // POST api/<controller>
        [HttpPost]
        [Authorize(Policy = PolicyNames.EditModule)]
        public async Task<Models.Event> Post([FromBody] Models.Event EventRegistration)
        {
            if (ModelState.IsValid && IsAuthorizedEntityId(EntityNames.Module, EventRegistration.ModuleId))
            {
                EventRegistration = await _EventRegistrationService.AddEventAsync(EventRegistration);
            }
            else
            {
                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized EventRegistration Post Attempt {EventRegistration}", EventRegistration);
                HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
                EventRegistration = null;
            }
            return EventRegistration;
        }

        // PUT api/<controller>/5
        [HttpPut("{id}")]
        [Authorize(Policy = PolicyNames.EditModule)]
        public async Task<Models.Event> Put(int id, [FromBody] Models.Event EventRegistration)
        {
            if (ModelState.IsValid && EventRegistration.EventId == id && IsAuthorizedEntityId(EntityNames.Module, EventRegistration.ModuleId))
            {
                EventRegistration = await _EventRegistrationService.UpdateEventAsync(EventRegistration);
            }
            else
            {
                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized EventRegistration Put Attempt {EventRegistration}", EventRegistration);
                HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
                EventRegistration = null;
            }
            return EventRegistration;
        }

        // DELETE api/<controller>/5
        [HttpDelete("{id}/{moduleid}")]
        [Authorize(Policy = PolicyNames.EditModule)]
        public async Task Delete(int id, int moduleid)
        {
            Models.Event EventRegistration = await _EventRegistrationService.GetEventAsync(id, moduleid);
            if (EventRegistration != null && IsAuthorizedEntityId(EntityNames.Module, EventRegistration.ModuleId))
            {
                await _EventRegistrationService.DeleteEventAsync(id, EventRegistration.ModuleId);
            }
            else
            {
                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized EventRegistration Delete Attempt {EventRegistrationId} {ModuleId}", id, moduleid);
                HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
            }
        }

        // GET api/<controller>/5
        [HttpGet("details/{id}/{moduleid}")]
        [Authorize(Policy = PolicyNames.ViewModule)]
        public async Task<(Models.Event, Models.Response)> GetDetails(int id, int moduleid)
        {
            Models.Event EventRegistration;
            Models.Response EventResponse;
            (EventRegistration, EventResponse) = await _EventRegistrationService.GetEventDetails(id, moduleid);
            if (EventRegistration != null && EventResponse != null && IsAuthorizedEntityId(EntityNames.Module, EventRegistration.ModuleId))
            {
                return (EventRegistration, EventResponse);
            }
            else
            {
                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized EventRegistration Get Attempt {EventRegistrationId} {ModuleId}", id, moduleid);
                HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
                return (null, null);
            }
        }

        // TODO: Add Event Response Endpoints.
    }
}