using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace KTUSAPS.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    [Produces("application/json")]
    public class AuthMetadataController : ControllerBase
    {
        public class AuthMetadata
        {
            public string ClientId { get; set; }
            public string Authority { get; set; }
            public string Tenant { get; set; }
        }

        private readonly IConfiguration _configuration;
        public AuthMetadataController(IConfiguration configuration)
        {
            _configuration = configuration;
        }

        /// <summary>
        /// Get authethication metadata needed to obtain token.
        /// </summary>
        /// <returns></returns>
        [HttpGet]
        public AuthMetadata Index() => new AuthMetadata { ClientId = _configuration["ClientId"], Authority = _configuration["Authority"], Tenant = _configuration["Tenant"] };

        /// <summary>
        /// Returns true is provided token is valid, else throws exception
        /// </summary>
        /// <returns></returns>
        /// <response code="200">Provided token is correct.</response>
        /// <response code="401">No valid token provided.</response>
        [Authorize]
        [ProducesResponseType(StatusCodes.Status200OK)]
        [HttpGet("Authed")]
        public bool IsAuthed() => true;

        [Authorize]
        [ProducesResponseType(StatusCodes.Status200OK)]
        [HttpGet("Claims")]
        public IEnumerable<object> Claims() => User.Claims.Select((c) => new { c.Type, c.Value });

        [Authorize("admin")]
        [ProducesResponseType(StatusCodes.Status200OK)]
        [HttpGet("Admin")]
        public bool IsAdmin() => true;
    }
}