API/TOOHUCardAPI/Controllers/RankDataController.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using TOOHUCardAPI.Data.Enums;
using TOOHUCardAPI.Data.Services;
using TOOHUCardAPI.DTO;

namespace TOOHUCardAPI.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class RankDataController : MethodBasedController<RankDataController>
    {
        private readonly ILogger<RankDataController> _logger;
        private readonly RankService _rankService;
        private readonly StoreService _storeService;
        private readonly UserService _userService;

        public RankDataController(ILogger<RankDataController> logger, RankService rankService, StoreService storeService, UserService userService)
        {
            _logger = logger;
            _rankService = rankService;
            _storeService = storeService;
            _userService = userService;
        }

        private RankType ParseRankType(string rankType)
        {
            if (rankType == null || rankType.Length > 1)
            {
                return RankType.All;
            }

            char identifier = rankType.ToCharArray()[0];
            if (identifier == (char) RankType.Single)
            {
                return RankType.Single;
            }

            if (identifier == (char) RankType.Team)
            {
                return RankType.Team;
            }

            return RankType.All;
        }

        [HttpGet]
        public async Task<IActionResult> GetRankData(string rank_type)
        {
            RankType parsedRankType = ParseRankType(rank_type);

            return Ok(new OkResponse());
        }
    }
}