#include <Catch/fakeit.hpp>
#include <ConfigContext.hpp>
#include <ServerContext.hpp>
#include <SessionContext.hpp>
#include <torrents.hpp>

using namespace std;

const nlohmann::json torrent = {
    {"hash", "12a12a12a12a12a12a12"},
    {"paused", false},
    {"seeding", false},
    {"state", 0},
    {"priority", 0},
    {"name", "Arch"}};

SCENARIO("We are running a GET /session/torrents resource") {
  auto torrent_session = TestSession();
  auto response = std::make_shared<TestResponse>();
  auto request = std::make_shared<TestRequest>();
  GIVEN("the server is not working properly") {
    WHEN("we recive a request") {
      tr::session::torrents::get(torrent_session, response, request);
      THEN("the server should reply with service unavailable") {
        CommonResponse::service_unavailable(response);
      }
    }
  }
  GIVEN("the server is working properly") {
    torrent_session.valid = true;
    WHEN("we recive a valid request") {
      GIVEN("we have no torrents") {
        THEN("the server should reply with an empty array") {
          tr::session::torrents::get(torrent_session, response, request);
          CommonResponse::ok(response, {{"torrents", nlohmann::json::array()}});
        }
      }
      GIVEN("we have at least one torrent") {
        auto t_torrent = TestTorrent();
        libtorrent::sha1_hash sha;
        sha.assign("12a12a12a12a12a12a12");
        t_torrent.hash_ = sha;
        torrent_session.get_torrents().emplace_back(t_torrent);
        THEN("the server should reply with an array of torrents") {
          tr::session::torrents::get(torrent_session, response, request);
          CommonResponse::ok(response, {{"torrents", {torrent}}});
        };
      }
    }
  }
}

const std::string torrent_id = "c0b0a90089710812fe8c37385a4cc2978eabf3e8";

SCENARIO("We are running a POST /session/torrents resource") {
  auto torrent_session = TestSession();
  auto settings = Config();
  auto response = std::make_shared<TestResponse>();
  auto request = std::make_shared<TestRequest>();
  const auto magnet_uri = "magnet:?xt=urn:btih:" + torrent_id + "&dn=Taylor Swift&tr=http://tracker.sout.no";
  GIVEN("the server is not working properly") {
    AND_WHEN("we recive a request") {
      tr::session::torrents::post(settings, torrent_session, response, request);
      THEN("the server should reply with service unavailable") {
        CommonResponse::service_unavailable(response);
      }
    }
  }
  GIVEN("the server is working properly") {
    torrent_session.valid = true;
    WHEN("we recive a valid request") {
      GIVEN("we use the default download directory") {
        request->content << nlohmann::json::object({{"magnet_uri", magnet_uri}});
        THEN("the server should reply with created") {
          tr::session::torrents::post(settings, torrent_session, response, request);
          CommonResponse::created(response, request, "/session/torrents/" + torrent_id);
          REQUIRE(torrent_session.get_torrents().size() == 1);
          REQUIRE((torrent_session.get_torrents()[0]).status().save_path == "/toREST");
        }
      }
      GIVEN("we specify a absolute save path") {
        request->content << nlohmann::json::object(
            {{"magnet_uri", magnet_uri},
             {"save_path", "/music"}});
        tr::session::torrents::post(settings, torrent_session, response, request);
        THEN("the server should reply with bad request") {
          CommonResponse::bad_request(response);
          REQUIRE(torrent_session.get_torrents().size() == 0);
        }
      }
      GIVEN("we specify a relative save path") {
        request->content << nlohmann::json::object(
            {{"magnet_uri", magnet_uri},
             {"save_path", "music"}});
        THEN("the server should reply created") {
          tr::session::torrents::post(settings, torrent_session, response, request);
          CommonResponse::created(response, request, "/session/torrents/" + torrent_id);
          REQUIRE(torrent_session.get_torrents().size() == 1);
          REQUIRE_FALSE(torrent_session.get_torrents()[0].status().paused);
          REQUIRE(torrent_session.get_torrents()[0].upload_limit() == -1);
          REQUIRE(torrent_session.get_torrents()[0].download_limit() == -1);
          REQUIRE((torrent_session.get_torrents()[0]).status().save_path == "/music");
        }
      }
      GIVEN("we specify the torrent field to be paused") {
        request->content << nlohmann::json::object(
            {{"magnet_uri", magnet_uri},
             {"save_path", "music"},
             {"paused", "true"}});
        THEN("the server should reply with bad request") {
          tr::session::torrents::post(settings, torrent_session, response, request);
          CommonResponse::created(response, request, "/session/torrents/" + torrent_id);
          REQUIRE(torrent_session.get_torrents().size() == 1);
          REQUIRE(torrent_session.get_torrents()[0].status().paused);
          REQUIRE(torrent_session.get_torrents()[0].upload_limit() == -1);
          REQUIRE(torrent_session.get_torrents()[0].download_limit() == -1);
          REQUIRE((torrent_session.get_torrents()[0]).status().save_path == "/music");
        }
      }
      GIVEN("we specify up an down speed") {
        const std::string name = "Dent";
        request->content << nlohmann::json::object(
            {{"magnet_uri", magnet_uri},
             {"save_path", "music"},
             {"up_speed", "100"},
             {"down_speed", "100"},
             {"name", name}});
        THEN("the server should reply with bad request") {
          tr::session::torrents::post(settings, torrent_session, response, request);
          CommonResponse::created(response, request, "/session/torrents/" + torrent_id);
          REQUIRE(torrent_session.get_torrents().size() == 1);
          REQUIRE_FALSE(torrent_session.get_torrents()[0].status().paused);
          REQUIRE(torrent_session.get_torrents()[0].status().name == name);
          REQUIRE(torrent_session.get_torrents()[0].upload_limit() == 100);
          REQUIRE(torrent_session.get_torrents()[0].download_limit() == 100);
          REQUIRE((torrent_session.get_torrents()[0]).status().save_path == "/music");
        }
      }
    }
    WHEN("we recive an invalid request") {
      GIVEN("the request doesn't contain valid json") {
        request->content << "Not valid";
        THEN("the server should reply with bad request") {
          tr::session::torrents::post(settings, torrent_session, response, request);
          CommonResponse::bad_request(response);
        }
      }
      GIVEN("it is valid json but are missing requred field") {
        request->content << nlohmann::json({{"up_speed", "100"}});
        THEN("the server should reply with bad request") {
          tr::session::torrents::post(settings, torrent_session, response, request);
          CommonResponse::bad_request(response);
        }
      }
    }
  }
}

void theTorrentExists(TestSession &torrent_session) {
  torrent_session.torrents_.emplace_back();
  libtorrent::sha1_hash sha1_hash;
  std::stringstream ss;
  ss << torrent_id;
  ss >> sha1_hash;
  torrent_session.torrents_[0].hash_ = sha1_hash;
  torrent_session.torrents_[0].valid = true;
  REQUIRE(torrent_session.get_torrents().size() == 1);
};

SCENARIO("We are running a DELETE /session/torrents resource") {
  auto torrent_session = TestSession();
  auto response = std::make_shared<TestResponse>();
  auto request = std::make_shared<TestRequest>();
  GIVEN("the server is not working properly") {
    AND_WHEN("we recive a request") {
      tr::session::torrents::del(torrent_session, response, request);
      THEN("the server should reply with service unavailable") {
        CommonResponse::service_unavailable(response);
      }
    }
  }
  GIVEN("the server is working properly") {
    torrent_session.valid = true;
    WHEN("we recive an invalid request") {
      GIVEN("the request doesn't contain valid json") {
        request->content << "Not valid";
        THEN("the server should reply with bad request") {
          tr::session::torrents::del(torrent_session, response, request);
          CommonResponse::bad_request(response);
        }
      }
      GIVEN("it is valid json but are missing requred field") {
        request->content << nlohmann::json({{"up_speed", "100"}});
        THEN("the server should reply with bad request") {
          tr::session::torrents::del(torrent_session, response, request);
          CommonResponse::bad_request(response);
        }
      }
      GIVEN("required field is wrong type") {
        request->content << nlohmann::json({{"info_hash", 1}});
        THEN("the server should reply with bad request") {
          tr::session::torrents::del(torrent_session, response, request);
          CommonResponse::bad_request(response);
        }
      }
      GIVEN("fields are correct") {
        GIVEN("the torrent exists") {
          theTorrentExists(torrent_session);
          THEN("the server should reply no content") {
            request->content << nlohmann::json({{"info_hash", torrent_id}});
            tr::session::torrents::del(torrent_session, response, request);
            CommonResponse::no_content(response);
            REQUIRE(torrent_session.get_torrents().size() == 0);
          }
          GIVEN("we want to remove files") {
            THEN("the should reply with no content") {
              request->content << nlohmann::json({{"info_hash", torrent_id},
                                                  {"remove_files", true}});
              tr::session::torrents::del(torrent_session, response, request);
              CommonResponse::no_content(response);
              REQUIRE(torrent_session.get_torrents().size() == 0);
            }
            THEN("we should reply with no content") {
              request->content << nlohmann::json({{"info_hash", torrent_id},
                                                  {"remove_files", "true"}});
              tr::session::torrents::del(torrent_session, response, request);
              CommonResponse::no_content(response);
              REQUIRE(torrent_session.get_torrents().size() == 0);
            }
          }
        }
        GIVEN("the torrent doesn't exist") {
          THEN("the server should reply with bad request") {
            tr::session::torrents::del(torrent_session, response, request);
            CommonResponse::bad_request(response);
          }
        }
      }
    }
  }
}