#include "File_Tool.h"
Psc::File_Tool::File_Tool(const QString& title, Mode mode, QWidget* parent) : QWidget(parent), mode_(mode) {
    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
    title_label = new QLabel(title, this);
    path_edit = new QLineEdit(this);
    path_edit->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
    browse_btn = new QPushButton("选择", this);
    browse_btn->setFixedWidth(48);
    set_help_text(browse_btn, "点击打开文件\n支持手动输入路径");
    clear_btn = new QPushButton("清空", this);
    clear_btn->setFixedWidth(48);
    set_help_text(clear_btn, "点击清空当前文件内容");
    backup_clear_btn = new QPushButton("备份清空", this);
    backup_clear_btn->setFixedWidth(72);
    set_help_text(backup_clear_btn, "点击清空,并且备份当前文件");
    auto layout = new QHBoxLayout(this);
    layout->setContentsMargins(0, 0, 0, 0);
    layout->setSpacing(4);
    if (!title.isEmpty())
        layout->addWidget(title_label);
    layout->addWidget(path_edit);
    layout->addWidget(browse_btn);
    layout->addWidget(clear_btn);
    layout->addWidget(backup_clear_btn);
    // 选择路径
    connect(browse_btn, &QPushButton::clicked, this, [this]() {
        QString selected;
        switch (mode_) {
        case Mode::OpenFile:
            selected = QFileDialog::getOpenFileName(this, "Select File");
            break;
        case Mode::SaveFile:
            selected = QFileDialog::getSaveFileName(this, "Save File");
            break;
        case Mode::Directory:
            selected = QFileDialog::getExistingDirectory(this, "Select Directory");
            break;
        }
        if (!selected.isEmpty()) {
            path_edit->setText(selected);
            emit path_changed(selected);
        }
    });
    // 清空文件
    connect(clear_btn, &QPushButton::clicked, this, [this]() {
        const QString p = path_edit->text();
        if (p.isEmpty())
            return;
        QFileInfo info(p);
        if (!info.exists() || !info.isFile()) {
            Message::show(Message::error, "文件不存在！",
                          this, 2000, Message::Top_Right);
            return;
        }
        QFile file(p);
        if (!file.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
            Message::show(Message::error, "无法清空文件！",
                          this, 2000, Message::Top_Right);
            return;
        }
        file.close();
        Message::show(Message::success, "文件已清空",
                      this, 1500, Message::Top_Right);
    });
    // 备份并清空
    connect(backup_clear_btn, &QPushButton::clicked, this, [this]() {
        const QString p = path_edit->text();
        if (p.isEmpty())
            return;
        QFileInfo info(p);
        if (!info.exists() || !info.isFile()) {
            Message::show(Message::error, "文件不存在！",
                          this, 2000, Message::Top_Right);
            return;
        }
        QString backup_path =
        info.absolutePath() + "/" +
        info.completeBaseName() + "_" +
        QDateTime::currentDateTime().toString("yyyy_MM_dd_hh_mm_ss") +
        "." + info.suffix();
        if (!QFile::copy(p, backup_path)) {
            Message::show(Message::error, "备份失败！",
                          this, 2000, Message::Top_Right);
            return;
        }
        QFile file(p);
        if (!file.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
            Message::show(Message::error, "清空失败！",
                          this, 2000, Message::Top_Right);
            return;
        }
        file.close();
        Message::show(Message::success, "已备份并清空",
                      this, 1500, Message::Top_Right);
    });
    connect(path_edit, &QLineEdit::editingFinished, this,
            [this]() {
                emit path_changed(path_edit->text());
            });
}
void Psc::File_Tool::set_title(const QString& t) {
    title_label->setText(t);
    title_label->setVisible(!t.isEmpty());
}
QString Psc::File_Tool::path() const {
    return path_edit->text();
}
void Psc::File_Tool::set_path(const QString& p) {
    path_edit->setText(p);
    emit path_changed(p);
}