/*
 * Cppcheck - A tool for static C/C++ code analysis
 * Copyright (C) 2007-2016 Cppcheck team.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

#include <QWidget>
#include <QDialog>
#include <QString>
#include <QStringList>
#include <QFileInfo>
#include <QFileDialog>
#include <QInputDialog>
#include <QDir>
#include <QSettings>
#include "common.h"
#include "projectfiledialog.h"
#include "library.h"
#include "cppcheck.h"
#include "errorlogger.h"

ProjectFileDialog::ProjectFileDialog(const QString &path, QWidget *parent)
    : QDialog(parent)
    , mFilePath(path)
{
    mUI.setupUi(this);

    const QFileInfo inf(path);
    QString filename = inf.fileName();
    QString title = tr("Project file: %1").arg(filename);
    setWindowTitle(title);
    LoadSettings();

    // Checkboxes for the libraries..
    const QString applicationFilePath = QCoreApplication::applicationFilePath();
    const QString appPath = QFileInfo(applicationFilePath).canonicalPath();
    QSettings settings;
    const QString datadir = settings.value("DATADIR",QString()).toString();
    QStringList searchPaths;
    searchPaths << appPath << appPath + "/cfg" << inf.canonicalPath();
    if (!datadir.isEmpty())
        searchPaths << datadir << datadir + "/cfg";
    QStringList libs;
    foreach (const QString sp, searchPaths) {
        QDir dir(sp);
        dir.setSorting(QDir::Name);
        dir.setNameFilters(QStringList("*.cfg"));
        dir.setFilter(QDir::Files | QDir::NoDotAndDotDot);
        foreach (QFileInfo item, dir.entryInfoList()) {
            QString library = item.fileName();
            {
                Library lib;
                const QString fullfilename = sp + "/" + library;
                const Library::Error err = lib.load(nullptr, fullfilename.toLatin1());
                if (err.errorcode != Library::OK)
                    continue;
            }
            library.chop(4);
            if (library.compare("std", Qt::CaseInsensitive) == 0)
                continue;
            if (libs.indexOf(library) == -1)
                libs << library;
        }
    }
    qSort(libs);
    foreach (const QString library, libs) {
        QCheckBox *checkbox = new QCheckBox(this);
        checkbox->setText(library);
        mUI.librariesLayout->addWidget(checkbox);
        mLibraryCheckboxes << checkbox;
    }

    connect(mUI.mButtons, SIGNAL(accepted()), this, SLOT(accept()));
    connect(mUI.mBtnAddInclude, SIGNAL(clicked()), this, SLOT(AddIncludeDir()));
    connect(mUI.mBtnAddPath, SIGNAL(clicked()), this, SLOT(AddPath()));
    connect(mUI.mBtnEditInclude, SIGNAL(clicked()), this, SLOT(EditIncludeDir()));
    connect(mUI.mBtnRemoveInclude, SIGNAL(clicked()), this, SLOT(RemoveIncludeDir()));
    connect(mUI.mBtnEditPath, SIGNAL(clicked()), this, SLOT(EditPath()));
    connect(mUI.mBtnRemovePath, SIGNAL(clicked()), this, SLOT(RemovePath()));
    connect(mUI.mBtnAddIgnorePath, SIGNAL(clicked()), this, SLOT(AddExcludePath()));
    connect(mUI.mBtnEditIgnorePath, SIGNAL(clicked()), this, SLOT(EditExcludePath()));
    connect(mUI.mBtnRemoveIgnorePath, SIGNAL(clicked()), this, SLOT(RemoveExcludePath()));
    connect(mUI.mBtnIncludeUp, SIGNAL(clicked()), this, SLOT(MoveIncludePathUp()));
    connect(mUI.mBtnIncludeDown, SIGNAL(clicked()), this, SLOT(MoveIncludePathDown()));
    connect(mUI.mBtnAddSuppression, SIGNAL(clicked()), this, SLOT(AddSuppression()));
    connect(mUI.mBtnRemoveSuppression, SIGNAL(clicked()), this, SLOT(RemoveSuppression()));
}

ProjectFileDialog::~ProjectFileDialog()
{
    SaveSettings();
}

void ProjectFileDialog::LoadSettings()
{
    QSettings settings;
    resize(settings.value(SETTINGS_PROJECT_DIALOG_WIDTH, 470).toInt(),
           settings.value(SETTINGS_PROJECT_DIALOG_HEIGHT, 330).toInt());
}

void ProjectFileDialog::SaveSettings() const
{
    QSettings settings;
    settings.setValue(SETTINGS_PROJECT_DIALOG_WIDTH, size().width());
    settings.setValue(SETTINGS_PROJECT_DIALOG_HEIGHT, size().height());
}

void ProjectFileDialog::AddIncludeDir(const QString &dir)
{
    if (dir.isNull() || dir.isEmpty())
        return;

    const QString newdir = QDir::toNativeSeparators(dir);
    QListWidgetItem *item = new QListWidgetItem(newdir);
    item->setFlags(item->flags() | Qt::ItemIsEditable);
    mUI.mListIncludeDirs->addItem(item);
}

void ProjectFileDialog::AddPath(const QString &path)
{
    if (path.isNull() || path.isEmpty())
        return;

    const QString newpath = QDir::toNativeSeparators(path);
    QListWidgetItem *item = new QListWidgetItem(newpath);
    item->setFlags(item->flags() | Qt::ItemIsEditable);
    mUI.mListPaths->addItem(item);
}

void ProjectFileDialog::AddExcludePath(const QString &path)
{
    if (path.isNull() || path.isEmpty())
        return;

    const QString newpath = QDir::toNativeSeparators(path);
    QListWidgetItem *item = new QListWidgetItem(newpath);
    item->setFlags(item->flags() | Qt::ItemIsEditable);
    mUI.mListExcludedPaths->addItem(item);
}

QString ProjectFileDialog::GetRootPath() const
{
    QString root = mUI.mEditProjectRoot->text();
    root = root.trimmed();
    root = QDir::fromNativeSeparators(root);
    return root;
}

QStringList ProjectFileDialog::GetIncludePaths() const
{
    const int count = mUI.mListIncludeDirs->count();
    QStringList includePaths;
    for (int i = 0; i < count; i++) {
        QListWidgetItem *item = mUI.mListIncludeDirs->item(i);
        includePaths << QDir::fromNativeSeparators(item->text());
    }
    return includePaths;
}

QStringList ProjectFileDialog::GetDefines() const
{
    QString define = mUI.mEditDefines->text();
    QStringList defines;
    if (!define.isEmpty()) {
        define = define.trimmed();
        if (define.indexOf(';') != -1)
            defines = define.split(";");
        else
            defines.append(define);
    }
    return defines;
}

QStringList ProjectFileDialog::GetPaths() const
{
    const int count = mUI.mListPaths->count();
    QStringList paths;
    for (int i = 0; i < count; i++) {
        QListWidgetItem *item = mUI.mListPaths->item(i);
        paths << QDir::fromNativeSeparators(item->text());
    }
    return paths;
}

QStringList ProjectFileDialog::GetExcludedPaths() const
{
    const int count = mUI.mListExcludedPaths->count();
    QStringList paths;
    for (int i = 0; i < count; i++) {
        QListWidgetItem *item = mUI.mListExcludedPaths->item(i);
        paths << QDir::fromNativeSeparators(item->text());
    }
    return paths;
}

QStringList ProjectFileDialog::GetLibraries() const
{
    QStringList libraries;
    foreach (const QCheckBox *checkbox, mLibraryCheckboxes) {
        if (checkbox->isChecked())
            libraries << checkbox->text();
    }
    return libraries;
}

QStringList ProjectFileDialog::GetSuppressions() const
{
    QStringList suppressions;
    const int count = mUI.mListSuppressions->count();
    for (int i = 0; i < count; i++) {
        QListWidgetItem *item = mUI.mListSuppressions->item(i);
        suppressions << item->text();
    }
    return suppressions;
}

void ProjectFileDialog::SetRootPath(const QString &root)
{
    QString newroot = QDir::toNativeSeparators(root);
    mUI.mEditProjectRoot->setText(newroot);
}

void ProjectFileDialog::SetIncludepaths(const QStringList &includes)
{
    foreach (QString dir, includes) {
        AddIncludeDir(dir);
    }
}

void ProjectFileDialog::SetDefines(const QStringList &defines)
{
    QString definestr;
    QString define;
    foreach (define, defines) {
        definestr += define;
        definestr += ";";
    }
    // Remove ; from the end of the string
    if (definestr.endsWith(';'))
        definestr = definestr.left(definestr.length() - 1);
    mUI.mEditDefines->setText(definestr);
}

void ProjectFileDialog::SetPaths(const QStringList &paths)
{
    foreach (QString path, paths) {
        AddPath(path);
    }
}

void ProjectFileDialog::SetExcludedPaths(const QStringList &paths)
{
    foreach (QString path, paths) {
        AddExcludePath(path);
    }
}

void ProjectFileDialog::SetLibraries(const QStringList &libraries)
{
    for (int i = 0; i < mLibraryCheckboxes.size(); i++) {
        QCheckBox *checkbox = mLibraryCheckboxes[i];
        checkbox->setChecked(libraries.contains(checkbox->text()));
    }
}

void ProjectFileDialog::SetSuppressions(const QStringList &suppressions)
{
    mUI.mListSuppressions->clear();
    mUI.mListSuppressions->addItems(suppressions);
    mUI.mListSuppressions->sortItems();
}

void ProjectFileDialog::AddIncludeDir()
{
    const QFileInfo inf(mFilePath);
    const QString rootpath = inf.absolutePath();
    QString selectedDir = QFileDialog::getExistingDirectory(this,
                          tr("Select include directory"),
                          rootpath);

    if (!selectedDir.isEmpty()) {
        // Check if the path is relative to project file's path and if so
        // make it a relative path instead of absolute path.
        const QDir dir(selectedDir);
        QString absPath = dir.absolutePath();
        if (absPath.startsWith(rootpath)) {
            // Remove also the slash from begin of new relative path
            selectedDir = absPath.remove(0, rootpath.length() + 1);
        }
        if (!selectedDir.endsWith("/"))
            selectedDir += '/';
        AddIncludeDir(selectedDir);
    }
}

void ProjectFileDialog::AddPath()
{
    QFileInfo inf(mFilePath);
    const QString rootpath = inf.absolutePath();
    QString selectedDir = QFileDialog::getExistingDirectory(this,
                          tr("Select a directory to check"),
                          rootpath);

    if (!selectedDir.isEmpty()) {
        AddPath(selectedDir);
    }
}

void ProjectFileDialog::RemoveIncludeDir()
{
    const int row = mUI.mListIncludeDirs->currentRow();
    QListWidgetItem *item = mUI.mListIncludeDirs->takeItem(row);
    delete item;
}

void ProjectFileDialog::EditIncludeDir()
{
    QListWidgetItem *item = mUI.mListIncludeDirs->currentItem();
    mUI.mListIncludeDirs->editItem(item);
}

void ProjectFileDialog::EditPath()
{
    QListWidgetItem *item = mUI.mListPaths->currentItem();
    mUI.mListPaths->editItem(item);
}

void ProjectFileDialog::RemovePath()
{
    const int row = mUI.mListPaths->currentRow();
    QListWidgetItem *item = mUI.mListPaths->takeItem(row);
    delete item;
}

void ProjectFileDialog::AddExcludePath()
{
    QFileInfo inf(mFilePath);
    const QString rootpath = inf.absolutePath();

    QString selectedDir = QFileDialog::getExistingDirectory(this,
                          tr("Select directory to ignore"),
                          rootpath);

    if (!selectedDir.isEmpty()) {
        if (!selectedDir.endsWith('/'))
            selectedDir += '/';
        AddExcludePath(selectedDir);
    }
}

void ProjectFileDialog::EditExcludePath()
{
    QListWidgetItem *item = mUI.mListExcludedPaths->currentItem();
    mUI.mListExcludedPaths->editItem(item);
}

void ProjectFileDialog::RemoveExcludePath()
{
    const int row = mUI.mListExcludedPaths->currentRow();
    QListWidgetItem *item = mUI.mListExcludedPaths->takeItem(row);
    delete item;
}

void ProjectFileDialog::MoveIncludePathUp()
{
    int row = mUI.mListIncludeDirs->currentRow();
    QListWidgetItem *item = mUI.mListIncludeDirs->takeItem(row);
    row = row > 0 ? row - 1 : 0;
    mUI.mListIncludeDirs->insertItem(row, item);
    mUI.mListIncludeDirs->setCurrentItem(item);
}

void ProjectFileDialog::MoveIncludePathDown()
{
    int row = mUI.mListIncludeDirs->currentRow();
    QListWidgetItem *item = mUI.mListIncludeDirs->takeItem(row);
    const int count = mUI.mListIncludeDirs->count();
    row = row < count ? row + 1 : count;
    mUI.mListIncludeDirs->insertItem(row, item);
    mUI.mListIncludeDirs->setCurrentItem(item);
}

void ProjectFileDialog::AddSuppression()
{
    class QErrorLogger : public ErrorLogger {
    public:
        virtual void reportOut(const std::string &/*outmsg*/) {}
        virtual void reportErr(const ErrorLogger::ErrorMessage &msg) {
            errorIds << QString::fromStdString(msg._id);
        }
        QStringList errorIds;
    };

    QErrorLogger errorLogger;
    CppCheck cppcheck(errorLogger,false);
    cppcheck.getErrorMessages();
    errorLogger.errorIds.sort();

    bool ok;
    QString item = QInputDialog::getItem(this, tr("Add Suppression"),
                                         tr("Select error id suppress:"), errorLogger.errorIds, 0, false, &ok);
    if (ok && !item.isEmpty()) {
        mUI.mListSuppressions->addItem(item);
        mUI.mListSuppressions->sortItems();
    }
}

void ProjectFileDialog::RemoveSuppression()
{
    const int row = mUI.mListSuppressions->currentRow();
    QListWidgetItem *item = mUI.mListSuppressions->takeItem(row);
    delete item;
}
