/**
 * UGENE - Integrated Bioinformatics Tools.
 * Copyright (C) 2008-2021 UniPro <ugene@unipro.ru>
 * http://ugene.net
 *
 * This program 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 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 */

#include "ConsoleLogDriver.h"

#include <U2Core/CMDLineCoreOptions.h>
#include <U2Core/CMDLineHelpProvider.h>
#include <U2Core/CMDLineRegistry.h>
#include <U2Core/Settings.h>
#include <U2Core/Task.h>
#include <U2Core/Timer.h>

#ifdef Q_OS_WIN32
#    include "windows.h"
#endif
#include <stdio.h>
//#include <conio.h>
#define LOG_SETTINGS_ROOT QString("log_settings/")
#define TSB_SETTINGS_ROOT QString("task_status_bar_settings/")

namespace U2 {

const QString ConsoleLogDriver::LOG_SHOW_DATE_CMD_OPTION = "log-show-date";
const QString ConsoleLogDriver::LOG_SHOW_LEVEL_CMD_OPTION = "log-show-level";
const QString ConsoleLogDriver::LOG_SHOW_CATEGORY_CMD_OPTION = "log-show-category";
const QString ConsoleLogDriver::LOG_LEVEL_NONE_CMD_OPTION = "log-level-none";
const QString ConsoleLogDriver::LOG_LEVEL_ERROR_CMD_OPTION = "log-level-error";
const QString ConsoleLogDriver::LOG_LEVEL_INFO_CMD_OPTION = "log-level-info";
const QString ConsoleLogDriver::LOG_LEVEL_DETAILS_CMD_OPTION = "log-level-details";
const QString ConsoleLogDriver::LOG_LEVEL_TRACE_CMD_OPTION = "log-level-trace";
const QString ConsoleLogDriver::COLOR_OUTPUT_CMD_OPTION = "log-color-output";
const QString ConsoleLogDriver::LOG_SETTINGS_ACTIVE_FLAG = "activeFlagLevel";
//const QString ConsoleLogDriver::LOG_FORMAT                         = "log-format";
//const QString ConsoleLogDriver::LOG_LEVEL                          = "log-level";

bool ConsoleLogDriver::helpRegistered = false;

ConsoleLogDriver::ConsoleLogDriver()
    : printToConsole(true) {
    LogServer::getInstance()->addListener(this);

    if (!helpRegistered) {
        setLogCmdlineHelp();
    }

    setLogSettings();
    setCmdLineSettings();
}

ConsoleLogDriver::~ConsoleLogDriver() {
    LogServer::getInstance()->removeListener(this);
}

void ConsoleLogDriver::setLogCmdlineHelp() {
    assert(!helpRegistered);
    helpRegistered = true;

    CMDLineRegistry *cmdLineRegistry = AppContext::getCMDLineRegistry();
    assert(NULL != cmdLineRegistry);

    CMDLineHelpProvider *logFormat = new CMDLineHelpProvider(
        CMDLineCoreOptions::LOG_FORMAT,
        tr("Specifies the format of a log line."),
        tr("Specifies the format of a log line."
           "\n\nUse the following notations:"
           " L - level, C - category, YYYY or YY - year, MM - month, dd - day,"
           " hh - hour, mm - minutes, ss - seconds, zzz - milliseconds."
           " \n\nBy default, logformat=\"[L][hh:mm]\"."),
        tr("\"<format_string>\""));

    CMDLineHelpProvider *logLevel = new CMDLineHelpProvider(
        CMDLineCoreOptions::LOG_LEVEL,
        tr("Sets the log level."),
        tr("Sets the log level per category. If a category is not specified,"
           " the log level is applied to all categories."
           "\n\nThe following categories are available: \n\"Algorithms\""
           ", \"Console\", \"Core Services\", \"Input/Output\", \"Performance\""
           ", \"Remote Service\", \"Scripts\", \"Tasks\"."
           "\n\nThe following log levels are available: TRACE, DETAILS, INFO, ERROR or NONE."
           "\n\nBy default, loglevel=\"ERROR\"."),
        tr("\"<category1>=<level1> [<category2>=<level2> ...]\" | <level>"));

    CMDLineHelpProvider *coloredOutput = new CMDLineHelpProvider(
        ConsoleLogDriver::COLOR_OUTPUT_CMD_OPTION, tr("Enables colored output."));

    cmdLineRegistry->registerCMDLineHelpProvider(logFormat);
    cmdLineRegistry->registerCMDLineHelpProvider(logLevel);
    cmdLineRegistry->registerCMDLineHelpProvider(coloredOutput);
}

QString ConsoleLogDriver::getLevelName(int i) const {
    switch (i) {
    case 0:
        return "TRACE";
    case 1:
        return "DETAILS";
    case 2:
        return "INFO";
    case 3:
        return "ERROR";
    default:
        return "";
    }
}

void ConsoleLogDriver::setLogSettings() {
    CMDLineRegistry *cmd = AppContext::getCMDLineRegistry();
    if (cmd->hasParameter(CMDLineCoreOptions::LOG_FORMAT)) {
        QString logFormat = cmd->getParameterValue(CMDLineCoreOptions::LOG_FORMAT);
        settings.showLevel = logFormat.contains("L", Qt::CaseSensitive);
        settings.showCategory = logFormat.contains("C", Qt::CaseSensitive);
        settings.showDate = logFormat.contains(QRegExp("[M{2}Y{2,4}d{2}H{2}m{2}s{2}z{3}]"));
        settings.logPattern = logFormat;
    } else if (cmd->hasParameter(LOG_SHOW_DATE_CMD_OPTION) ||    //old options
               cmd->hasParameter(LOG_SHOW_LEVEL_CMD_OPTION) ||
               cmd->hasParameter(LOG_SHOW_CATEGORY_CMD_OPTION)) {
        settings.logPattern = "";
        if (cmd->hasParameter(LOG_SHOW_DATE_CMD_OPTION)) {
            settings.showDate = true;
            settings.logPattern += "[hh:mm]";
        }
        if (cmd->hasParameter(LOG_SHOW_LEVEL_CMD_OPTION)) {
            settings.showLevel = true;
            settings.logPattern += "[L]";
        }
        if (cmd->hasParameter(LOG_SHOW_CATEGORY_CMD_OPTION)) {
            settings.showCategory = true;
            settings.logPattern += "[C]";
        }
    } else {
        settings.logPattern = "[hh:mm][L]";
    }

    QString logLevel;
    if (cmd->hasParameter(CMDLineCoreOptions::LOG_LEVEL)) {
        logLevel = cmd->getParameterValue(CMDLineCoreOptions::LOG_LEVEL);
    } else if (cmd->hasParameter(LOG_LEVEL_NONE_CMD_OPTION)) {
        logLevel = "NONE";
    } else if (cmd->hasParameter(LOG_LEVEL_ERROR_CMD_OPTION)) {
        logLevel = "ERROR";
    } else if (cmd->hasParameter(LOG_LEVEL_INFO_CMD_OPTION)) {
        logLevel = "INFO";
    } else if (cmd->hasParameter(LOG_LEVEL_DETAILS_CMD_OPTION)) {
        logLevel = "DETAILS";
    } else if (cmd->hasParameter(LOG_LEVEL_TRACE_CMD_OPTION)) {
        logLevel = "TRACE";
    } else {
        logLevel = "ERROR";
    }

    LogServer *ls = LogServer::getInstance();
    const QStringList &categoryList = ls->getCategories();
    logLevel = logLevel.remove(" ");
    QStringList cats = logLevel.split(QRegExp("[,=]"));

    LogCategories::init();
    if (cats.size() == 1) {
        int minLevel = 10;
        for (int i = 0; i < LogLevel_NumLevels; i++) {
            if (getLevelName((LogLevel)i) == logLevel) {
                minLevel = i;
            }
        }
        for (int i = 0; i < LogLevel_NumLevels; i++) {
            settings.activeLevelGlobalFlag[i] = (i >= minLevel);
        }
        foreach (const QString &str, categoryList) {
            LoggerSettings cs;
            cs.categoryName = str;
            for (int i = 0; i < LogLevel_NumLevels; i++) {
                cs.activeLevelFlag[i] = (i >= minLevel);
            }
            settings.categories[str] = cs;
        }
    } else {
        foreach (const QString &str, categoryList) {
            LoggerSettings cs;
            cs.categoryName = str;
            QString catWithoutSpaces = str;
            catWithoutSpaces = catWithoutSpaces.remove(" ");
            if (logLevel.contains(catWithoutSpaces)) {
                int ind = cats.indexOf(catWithoutSpaces);
                QString level = cats[ind + 1];
                int minLevel = 10;
                for (int i = 0; i < LogLevel_NumLevels; i++) {
                    if (getLevelName((LogLevel)i) == level) {
                        cs.activeLevelFlag[i] = true;
                        minLevel = i;
                    } else {
                        cs.activeLevelFlag[i] = (i > minLevel);
                    }
                }

            } else {
                for (int i = 0; i < LogLevel_NumLevels; i++) {
                    cs.activeLevelFlag[i] = false;
                }
            }
            settings.categories[str] = cs;
        }
    }
}

void ConsoleLogDriver::setCmdLineSettings() {
    CMDLineRegistry *cmdLineRegistry = AppContext::getCMDLineRegistry();
    assert(NULL != cmdLineRegistry);
    Settings *settings = AppContext::getSettings();
    assert(NULL != settings);

    if (cmdLineRegistry->hasParameter(COLOR_OUTPUT_CMD_OPTION)) {
        colored = true;
    } else {
        colored = false;
    }
    if (cmdLineRegistry->hasParameter(CMDLineCoreOptions::TEAMCITY_OUTPUT)) {
        settings->setValue(LOG_SETTINGS_ROOT + "teamcityOut", true);
    }
}

QString ConsoleLogDriver::prepareText(const LogMessage &msg) const {
    QString prefix = settings.logPattern;
    prefix.replace("C", getEffectiveCategory(msg));
    prefix.replace("L", LogCategories::getLocalizedLevelName(msg.level));
    QStringList date = GTimer::createDateTime(msg.time).toString("yyyy:yy:MM:dd:hh:mm:ss:zzz").split(":");
    prefix.replace("YYYY", date[0]);
    prefix.replace("YY", date[1]);
    prefix.replace("MM", date[2]);
    prefix.replace("dd", date[3]);
    prefix.replace("hh", date[4]);
    prefix.replace("mm", date[5]);
    prefix.replace("ss", date[6]);
    prefix.replace("zzz", date[7]);
    QString spacing = prefix.isEmpty() ? QString() : QString(" ");
    QString text = prefix + spacing + msg.text;

    return text;
}

void ConsoleLogDriver::onMessage(const LogMessage &msg) {
    if (!printToConsole || !settings.activeLevelGlobalFlag[msg.level]) {
        return;
    }
    QString effCategory = getEffectiveCategory(msg);
    if (effCategory.isEmpty()) {
        return;
    }

    //this is Hard Code
    if (msg.text.contains(QString("##teamcity")) && (!AppContext::getSettings()->getValue("log_settings/teamcityOut", true).toBool())) {
        return;
    }
    if (effCategory == ULOG_CAT_USER_INTERFACE) {
        return;    //do not print UI related messages
    }
    QByteArray ba = prepareText(msg).toLocal8Bit();
    char *buf = ba.data();
#ifdef Q_OS_WIN32
    // a bit of magic to workaround Windows console encoding issues
    CharToOemA(buf, buf);
#endif
    if (AppContext::getSettings()->getValue(TSB_SETTINGS_ROOT + "showTaskStatusBar", true).toBool()) {
        printf("                                                                               \r");    //80 spaces for remove TaskStatusBar
    }
    if (!colored /*AppContext::getSettings()->getValue(LOG_SETTINGS_ROOT + "colorOut", false).toBool()*/) {
        printf("%s \n", buf);
    } else {
#ifdef Q_OS_WIN32
        if (msg.level == LogLevel_ERROR) {
            SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY | FOREGROUND_RED);
        } else if (msg.level == LogLevel_DETAILS) {
            SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY | FOREGROUND_GREEN);
        } else if (msg.level == LogLevel_TRACE) {
            SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY | FOREGROUND_BLUE);
        }
        printf("%s \n", buf);
        SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 0x0007);
#else
        //TO DO: for MacOs release coloring function
        if (msg.level == LogLevel_ERROR) {
            printf("\e[31m%s \e[0m\n", buf);
        } else if (msg.level == LogLevel_DETAILS) {
            printf("\e[32m%s \e[0m\n", buf);
        } else if (msg.level == LogLevel_TRACE) {
            printf("\e[34m%s \e[0m\n", buf);
        }
#endif
    }
    fflush(stdout);
}

QString ConsoleLogDriver::getEffectiveCategory(const LogMessage &msg) const {
    QString result;
    foreach (const QString &category, msg.categories) {
        const LoggerSettings &cs = settings.getLoggerSettings(category);
        if (cs.activeLevelFlag[msg.level]) {
            result = category;
            break;
        }
    }

    return result;
}

}    // namespace U2
