/*
 * Copyright 2024 Ivy Collective <sys@ivycollective.dev>
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using System.Text;
using System.Text.Json;
using System.IdentityModel.Tokens.Jwt;
using blazingconsole.Types;

namespace blazingconsole.Services
{
    public class APIService(SettingsService settingsService)
    {
        private readonly HttpClient client = new();
        private string? jwt;
        private bool testsPassed = false;
        private SettingsService Settings { get; set; } = settingsService;

        public bool IsReady() {
            return testsPassed;
        }

        public void SetJwt(string jwt) {
            this.jwt = jwt;
            testsPassed = false;
        }

        // send HTTP requests (yes it's generated by AI)
        public async Task<T?> SendHttpRequest<T>(string path, HttpMethod method, object? body = null) {
            var request = new HttpRequestMessage(method, $"{Settings.Settings.ApiURL}{path}");
            request.Headers.Add("Authorization", $"Bearer {jwt}");
            if (body != null) {
                request.Content = new StringContent(JsonSerializer.Serialize(body), Encoding.UTF8, "application/json");
            }
            var response = await client.SendAsync(request);
            if (response.IsSuccessStatusCode) {
                var content = await response.Content.ReadAsStringAsync();
                return JsonSerializer.Deserialize<T>(content);
            } else {
                return default;
            }
        }

        public LinkedUser? GetLinkedUser() {
            if (jwt == null) return null;
            var jwtToken = new JwtSecurityTokenHandler().ReadJwtToken(jwt);
            return JsonSerializer.Deserialize<LinkedUser>(jwtToken.Claims.First(x => x.Type == "sub").Value);
        }

        public async Task<bool> TestAuthorization() {
            object? response;
            try {
                response = await SendHttpRequest<object>("/auth/test", HttpMethod.Get);
            } catch (Exception ex) {
                // log error
                Console.WriteLine(ex.ToString());
                response = null;
            }
            testsPassed = response != null;
            return response != null;
        }
    }
}