/*
 * Copyright (c) 2023 Proton AG
 *
 * This file is part of ProtonVPN.
 *
 * ProtonVPN is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * ProtonVPN is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with ProtonVPN.  If not, see <https://www.gnu.org/licenses/>.
 */

using System;
using System.Net.Http;
using ProtonVPN.Api.Handlers;
using ProtonVPN.Api.Handlers.Retries;
using ProtonVPN.Api.Handlers.StackBuilders;
using ProtonVPN.Api.Handlers.TlsPinning;
using ProtonVPN.Configurations.Contracts;

namespace ProtonVPN.Api;

public class ApiHttpClientFactory : IApiHttpClientFactory
{
    private readonly IConfiguration _config;
    private readonly HttpMessageHandler _innerHandler;

    public ApiHttpClientFactory(IConfiguration config, 
        AlternativeHostHandler alternativeHostHandler,
        CancellingHandlerBase cancellingHandlerBase,
        UnauthorizedResponseHandler unauthorizedResponseHandler,
        HumanVerificationHandlerBase humanVerificationHandlerBase,
        OutdatedAppHandler outdatedAppHandler,
        RetryingHandlerBase retryingHandlerBase,
        DnsHandler dnsHandler,
        LoggingHandlerBase loggingHandlerBase,
        TlsPinnedCertificateHandler certificateHandler)
    {
        _config = config;

        _innerHandler = new HttpMessageHandlerStackBuilder()
            .AddDelegatingHandler(alternativeHostHandler)
            .AddDelegatingHandler(cancellingHandlerBase)
            .AddDelegatingHandler(unauthorizedResponseHandler)
            .AddDelegatingHandler(humanVerificationHandlerBase)
            .AddDelegatingHandler(outdatedAppHandler)
            .AddDelegatingHandler(retryingHandlerBase)
            .AddDelegatingHandler(dnsHandler)
            .AddDelegatingHandler(loggingHandlerBase)
            .AddLastHandler(certificateHandler)
            .Build();
    }

    public HttpClient GetApiHttpClientWithoutCache()
    {
        HttpClient client = GetApiHttpClientWithCache();
        client.DefaultRequestHeaders.ConnectionClose = true;
        return client;
    }

    public HttpClient GetApiHttpClientWithCache()
    {
        return new(_innerHandler) { BaseAddress = new Uri(_config.Urls.ApiUrl) };
    }
}