using AsbCloudApp.Data;
using AsbCloudApp.Services;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using System.Threading;
using System.Linq;
using System.Threading.Tasks;
using System.Collections.Generic;

// For more information on enabling Web API for empty projects, visit https://go.microsoft.com/fwlink/?LinkID=397860
namespace AsbCloudWebApi.Controllers
{
    /// <summary>
    /// CRUD контроллер для админки.
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <typeparam name="TService"></typeparam>
    [ApiController]
    [Authorize]
    public abstract class CrudController<T, TService> : ControllerBase
        where T : IId
        where TService : ICrudService<T>
    {
        protected readonly TService service;

        public List<string> Roles { get; } = new List<string> { "Администратор" };

        public CrudController(TService service)
        {
            this.service = service;
        }

        /// <summary>
        /// Получить страницу с записями в PaginationContainer
        /// </summary>
        /// <param name="skip">пропустить skip записей</param>
        /// <param name="take">получить take записей</param>
        /// <param name="token">CancellationToken</param>
        /// <returns>страница с записями в PaginationContainer</returns>
        [HttpGet()]
        public virtual async Task<ActionResult<PaginationContainer<T>>> GetPage(int skip = 0, int take = 32, 
            CancellationToken token = default)
        {
            if (!Roles.Any(role => User.IsInRole(role)))
                return Forbid();

            var result = await service.GetPageAsync(skip, take, token).ConfigureAwait(false);
            return Ok(result);
        }

        /// <summary>
        /// Получить одну запись по Id
        /// </summary>
        /// <param name="id">id записи</param>
        /// <param name="token"></param>
        /// <returns>запись</returns>
        [HttpGet("{id}")]
        public virtual async Task<ActionResult<T>> Get(int id, CancellationToken token = default)
        {
            if (!Roles.Any(role => User.IsInRole(role)))
                return Forbid();

            var result = await service.GetAsync(id, token).ConfigureAwait(false);
            return Ok(result);
        }

        /// <summary>
        /// Добавить запись
        /// </summary>
        /// <param name="value">запись</param>
        /// <param name="token"></param>
        /// <returns>1 - добавлено, 0 - нет</returns>
        [HttpPost]
        [ProducesResponseType(typeof(int), (int)System.Net.HttpStatusCode.OK)]
        public virtual async Task<IActionResult> Insert([FromBody] T value, CancellationToken token = default)
        {
            if (!Roles.Any(role => User.IsInRole(role)))
                return Forbid();

            var result = await service.InsertAsync(value, token).ConfigureAwait(false);
            return Ok(result);
        }

        /// <summary>
        /// Редактировать запись по id
        /// </summary>
        /// <param name="id">id записи</param>
        /// <param name="value">запись</param>
        /// <param name="token"></param>
        /// <returns>1 - успешно отредактировано, 0 - нет</returns>
        [HttpPut("{id}")]
        [ProducesResponseType(typeof(int), (int)System.Net.HttpStatusCode.OK)]
        public virtual async Task<IActionResult> Put(int id, [FromBody] T value, CancellationToken token = default)
        {
            if (!Roles.Any(role => User.IsInRole(role)))
                return Forbid();

            var result = await service.UpdateAsync(id, value, token).ConfigureAwait(false);
            return Ok(result);
        }

        /// <summary>
        /// Удалить запись по id
        /// </summary>
        /// <param name="id">id записи</param>
        /// <param name="token"></param>
        /// <returns>1 - успешно удалено, 0 - нет</returns>
        [HttpDelete("{id}")]
        [ProducesResponseType(typeof(int), (int)System.Net.HttpStatusCode.OK)]
        public virtual async Task<IActionResult> Delete(int id, CancellationToken token = default)
        {
            if (!Roles.Any(role => User.IsInRole(role)))
                return Forbid();

            var result = await service.DeleteAsync(id, token).ConfigureAwait(false);
            return Ok(result);
        }
    }
}