/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.

For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "settings/settings_codes.h"

#include "platform/platform_specific.h"
#include "ui/toast/toast.h"
#include "mainwidget.h"
#include "mainwindow.h"
#include "data/data_session.h"
#include "main/main_session.h"
#include "main/main_account.h"
#include "main/main_accounts.h"
#include "boxes/confirm_box.h"
#include "lang/lang_cloud_manager.h"
#include "lang/lang_instance.h"
#include "core/application.h"
#include "mtproto/mtp_instance.h"
#include "mtproto/mtproto_dc_options.h"
#include "core/file_utilities.h"
#include "core/update_checker.h"
#include "window/themes/window_theme.h"
#include "window/themes/window_theme_editor.h"
#include "window/window_session_controller.h"
#include "media/audio/media_audio_track.h"
#include "settings/settings_common.h"
#include "api/api_updates.h"
#include "facades.h"

namespace Settings {
namespace {

using SessionController = Window::SessionController;

auto GenerateCodes() {
	auto codes = std::map<QString, Fn<void(SessionController*)>>();
	codes.emplace(qsl("debugmode"), [](SessionController *window) {
		QString text = Logs::DebugEnabled()
			? qsl("Do you want to disable DEBUG logs?")
			: qsl("Do you want to enable DEBUG logs?\n\n"
				"All network events will be logged.");
		Ui::show(Box<ConfirmBox>(text, [] {
			Core::App().switchDebugMode();
		}));
	});
	codes.emplace(qsl("viewlogs"), [](SessionController *window) {
		File::ShowInFolder(cWorkingDir() + "log.txt");
	});
	if (!Core::UpdaterDisabled()) {
		codes.emplace(qsl("testupdate"), [](SessionController *window) {
			Core::UpdateChecker().test();
		});
	}
	codes.emplace(qsl("loadlang"), [](SessionController *window) {
		Lang::CurrentCloudManager().switchToLanguage({ qsl("#custom") });
	});
	codes.emplace(qsl("crashplease"), [](SessionController *window) {
		Unexpected("Crashed in Settings!");
	});
	codes.emplace(qsl("moderate"), [](SessionController *window) {
		if (!window) {
			return;
		}
		auto text = Global::ModerateModeEnabled() ? qsl("Disable moderate mode?") : qsl("Enable moderate mode?");
		Ui::show(Box<ConfirmBox>(text, [=] {
			Global::SetModerateModeEnabled(!Global::ModerateModeEnabled());
			window->session().saveSettingsDelayed();
			Ui::hideLayer();
		}));
	});
	codes.emplace(qsl("getdifference"), [](SessionController *window) {
		if (window) {
			window->session().updates().getDifference();
		}
	});
	codes.emplace(qsl("loadcolors"), [](SessionController *window) {
		FileDialog::GetOpenPath(Core::App().getFileDialogParent(), "Open palette file", "Palette (*.tdesktop-palette)", [](const FileDialog::OpenResult &result) {
			if (!result.paths.isEmpty()) {
				Window::Theme::Apply(result.paths.front());
			}
		});
	});
	codes.emplace(qsl("videoplayer"), [](SessionController *window) {
		if (!window) {
			return;
		}
		auto text = cUseExternalVideoPlayer() ? qsl("Use internal video player?") : qsl("Use external video player?");
		Ui::show(Box<ConfirmBox>(text, [=] {
			cSetUseExternalVideoPlayer(!cUseExternalVideoPlayer());
			window->session().saveSettingsDelayed();
			Ui::hideLayer();
		}));
	});
	codes.emplace(qsl("endpoints"), [](SessionController *window) {
		if (!Core::App().accounts().started()) {
			return;
		}
		const auto weak = window
			? base::make_weak(&window->session().account())
			: nullptr;
		FileDialog::GetOpenPath(Core::App().getFileDialogParent(), "Open DC endpoints", "DC Endpoints (*.tdesktop-endpoints)", [weak](const FileDialog::OpenResult &result) {
			if (!result.paths.isEmpty()) {
				const auto loadFor = [&](not_null<Main::Account*> account) {
					if (!account->mtp().dcOptions().loadFromFile(result.paths.front())) {
						Ui::show(Box<InformBox>("Could not load endpoints :( Errors in 'log.txt'."));
					}
				};
				if (const auto strong = weak.get()) {
					loadFor(strong);
				} else {
					for (const auto &[index, account] : Core::App().accounts().list()) {
						loadFor(account.get());
					}
				}
			}
		});
	});
	codes.emplace(qsl("folders"), [](SessionController *window) {
		if (window) {
			window->showSettings(Settings::Type::Folders);
		}
	});

	codes.emplace(qsl("accadd"), [](SessionController *window) {
		crl::on_main(&Core::App(), [=] {
			if (window
				&& !Core::App().locked()
				&& Core::App().accounts().started()
				&& Core::App().accounts().list().size() < 3) {
				Core::App().accounts().activate(
					Core::App().accounts().add(MTP::Environment::Production));
			}
		});
	});

	codes.emplace(qsl("acctest"), [](SessionController *window) {
		crl::on_main(&Core::App(), [=] {
			if (window
				&& !Core::App().locked()
				&& Core::App().accounts().started()
				&& Core::App().accounts().list().size() < 3) {
				Core::App().accounts().activate(
					Core::App().accounts().add(MTP::Environment::Test));
			}
		});
	});

	for (auto i = 0; i != 3; ++i) {
		codes.emplace(qsl("account%1").arg(i + 1), [=](
				SessionController *window) {
			crl::on_main(&Core::App(), [=] {
				const auto &list = Core::App().accounts().list();
				const auto j = list.find(i);
				if (j != list.end() && !Core::App().locked()) {
					if (&Core::App().activeAccount() != j->second.get()) {
						Core::App().accounts().activate(i);
					}
				}
			});
		});
	}

#ifndef TDESKTOP_DISABLE_REGISTER_CUSTOM_SCHEME
	codes.emplace(qsl("registertg"), [](SessionController *window) {
		Platform::RegisterCustomScheme(true);
		Ui::Toast::Show("Forced custom scheme register.");
	});
#endif // !TDESKTOP_DISABLE_REGISTER_CUSTOM_SCHEME
	codes.emplace(qsl("export"), [](SessionController *window) {
		window->session().data().startExport();
	});
#if defined Q_OS_WIN || defined Q_OS_MAC
	codes.emplace(qsl("freetype"), [](SessionController *window) {
		auto text = cUseFreeType()
#ifdef Q_OS_WIN
			? qsl("Switch font engine to GDI?")
#else // Q_OS_WIN
			? qsl("Switch font engine to Cocoa?")
#endif // !Q_OS_WIN
			: qsl("Switch font engine to FreeType?");

		Ui::show(Box<ConfirmBox>(text, [] {
			Core::App().switchFreeType();
		}));
	});
#endif // Q_OS_WIN || Q_OS_MAC

	auto audioFilters = qsl("Audio files (*.wav *.mp3);;") + FileDialog::AllFilesFilter();
	auto audioKeys = {
		qsl("msg_incoming"),
		qsl("call_incoming"),
		qsl("call_outgoing"),
		qsl("call_busy"),
		qsl("call_connect"),
		qsl("call_end"),
	};
	for (auto &key : audioKeys) {
		codes.emplace(key, [=](SessionController *window) {
			if (!window) {
				return;
			}

			const auto weak = base::make_weak(&window->session());
			FileDialog::GetOpenPath(Core::App().getFileDialogParent(), "Open audio file", audioFilters, crl::guard(&window->session(), [=](const FileDialog::OpenResult &result) {
				if (weak && !result.paths.isEmpty()) {
					auto track = Media::Audio::Current().createTrack();
					track->fillFromFile(result.paths.front());
					if (track->failed()) {
						Ui::show(Box<InformBox>(
							"Could not audio :( Errors in 'log.txt'."));
					} else {
						weak->settings().setSoundOverride(
							key,
							result.paths.front());
						weak->saveSettingsDelayed();
					}
				}
			}));
		});
	}
	codes.emplace(qsl("sounds_reset"), [](SessionController *window) {
		if (window) {
			window->session().settings().clearSoundOverrides();
			window->session().saveSettingsDelayed();
			Ui::show(Box<InformBox>("All sound overrides were reset."));
		}
	});

	return codes;
}

} // namespace

void CodesFeedString(SessionController *window, const QString &text) {
	static const auto codes = GenerateCodes();
	static auto secret = QString();

	secret += text.toLower();
	int size = secret.size(), from = 0;
	while (size > from) {
		auto piece = secret.midRef(from);
		auto found = false;
		for (const auto &[key, method] : codes) {
			if (piece == key) {
				method(window);
				from = size;
				found = true;
				break;
			}
		}
		if (found) break;

		found = ranges::find_if(codes, [&](const auto &pair) {
			return pair.first.startsWith(piece);
		}) != end(codes);
		if (found) break;

		++from;
	}
	secret = (size > from) ? secret.mid(from) : QString();
}

} // namespace Settings