#include "AddLightFileDlg.h"

#include <QFileDialog>
#include <QFileInfo>
#include <QMessageBox>
#include <QColorDialog>
#include <QListWidget>

#include "workspace/WorkSpace.h"
#include "workspace/WorkSpaceManager.h"

#include "ui_AddLightFileDlg.h"

AddLightFileDlg::AddLightFileDlg(QWidget* parent)
    : BaseAddFileDlg(FileEntryType::Light, parent)
    , ui(new Ui::AddLightFileDlg)
    , currentLightIndex_(-1)
    , openColor_(0, 255, 0)    // Default to green color
    , closeColor_(255, 0, 0) { // Default to red color
    
    SetupUI(ui);
    SetTitle(getDialogTitle());
    setupConnections();
    
    // Initialize color properties
    colorProperties_.openColor = openColor_;
    colorProperties_.closeColor = closeColor_;
    
    // Update color previews
    updateOpenColorPreview(openColor_);
    updateCloseColorPreview(closeColor_);
}

AddLightFileDlg::~AddLightFileDlg() {
    delete ui;
}

void AddLightFileDlg::setupConnections() {
    // File selection connections
    connect(ui->selectFileBtn, &QToolButton::clicked, this, &AddLightFileDlg::OnSelectFile);
    
    // Color selection connections
    connect(ui->openColorButton, &QPushButton::clicked, this, &AddLightFileDlg::onOpenColorButtonClicked);
    connect(ui->closeColorButton, &QPushButton::clicked, this, &AddLightFileDlg::onCloseColorButtonClicked);
    
    // Light management connections
    connect(ui->addLightBtn, &QPushButton::clicked, this, &AddLightFileDlg::onAddLightClicked);
    connect(ui->removeLightBtn, &QPushButton::clicked, this, &AddLightFileDlg::onRemoveLightClicked);
    connect(ui->lightListWidget, &QListWidget::currentRowChanged, this, &AddLightFileDlg::onLightSelectionChanged);
    connect(ui->lightListWidget, &QListWidget::itemClicked, this, &AddLightFileDlg::onLightListWidgetItemClicked);
    
    // Light properties connections
    connect(ui->lightNameEdit, &QLineEdit::textChanged, this, &AddLightFileDlg::onLightNameChanged);
    connect(ui->lightIndexSpinBox, QOverload<int>::of(&QSpinBox::valueChanged), this, &AddLightFileDlg::onLightIndexChanged);

    // Dialog buttons
    connect(ui->addFileBtn, &QPushButton::clicked, this, &AddLightFileDlg::onSure);
    connect(ui->cancelBtn, &QPushButton::clicked, this, &QDialog::reject);
}

void AddLightFileDlg::updateFileInfo(const QString& filePath) {
    QFileInfo fileInfo(filePath);
    if (fileInfo.exists()) {
        ui->fileNameValue->setText(fileInfo.fileName());
        qint64 size = fileInfo.size();
        QString sizeText;
        if (size < 1024) {
            sizeText = QString("%1 B").arg(size);
        }
        else if (size < 1024 * 1024) {
            sizeText = QString("%1 KB").arg(size / 1024.0, 0, 'f', 1);
        }
        else {
            sizeText = QString("%1 MB").arg(size / (1024.0 * 1024.0), 0, 'f', 1);
        }
        ui->fileSizeValue->setText(sizeText);
    } else {
        ui->fileNameValue->setText("-");
        ui->fileSizeValue->setText("-");
    }

    ui->filePathEdit->setText(filePath);
}

void AddLightFileDlg::onOpenColorButtonClicked() {
    QColor color = QColorDialog::getColor(openColor_, this, "Select Open Color");
    if (color.isValid()) {
        openColor_ = color;
        colorProperties_.openColor = color;
        updateOpenColorPreview(color);
    }
}

void AddLightFileDlg::onCloseColorButtonClicked() {
    QColor color = QColorDialog::getColor(closeColor_, this, "Select Close Color");
    if (color.isValid()) {
        closeColor_ = color;
        colorProperties_.closeColor = color;
        updateCloseColorPreview(color);
    }
}

void AddLightFileDlg::onAddLightClicked() {
    // Save current light properties if any light is selected
    if (currentLightIndex_ >= 0) {
        saveLightProperties();
    }
    
    // Create new light with default properties
    FileEntryLight::LightProperty newLight;
    newLight.name = generateLightName();
    newLight.index = lights_.size();
    
    // Add to lights list
    lights_.append(newLight);
    
    // Add to UI list widget
    QListWidgetItem* item = new QListWidgetItem(QString("%1 [Index: %2]")
                                              .arg(newLight.name)
                                              .arg(newLight.index));
    ui->lightListWidget->addItem(item);
    
    // Select the new item
    ui->lightListWidget->setCurrentRow(lights_.size() - 1);
    currentLightIndex_ = lights_.size() - 1;
    
    // Enable properties editing
    enableLightProperties(true);
    updateLightProperties();
}

void AddLightFileDlg::onRemoveLightClicked() {
    int currentRow = ui->lightListWidget->currentRow();
    if (currentRow >= 0 && currentRow < lights_.size()) {
        // Remove from data
        lights_.removeAt(currentRow);
        
        // Remove from UI
        delete ui->lightListWidget->takeItem(currentRow);
        
        // Update current index
        if (lights_.isEmpty()) {
            currentLightIndex_ = -1;
            enableLightProperties(false);
            clearLightProperties();
        } else {
            // Select next item or previous if at end
            int newIndex = qMin(currentRow, lights_.size() - 1);
            ui->lightListWidget->setCurrentRow(newIndex);
            currentLightIndex_ = newIndex;
            updateLightProperties();
        }
        
        // Update list display with new indices
        for (int i = 0; i < lights_.size(); ++i) {
            lights_[i].index = i;
            QListWidgetItem* item = ui->lightListWidget->item(i);
            if (item) {
                item->setText(QString("%1 [Index: %2]")
                            .arg(lights_[i].name)
                            .arg(lights_[i].index));
            }
        }
    }
}

void AddLightFileDlg::onLightListWidgetItemClicked(QListWidgetItem* item) {
    Q_UNUSED(item)
    onLightSelectionChanged();
}

void AddLightFileDlg::onLightSelectionChanged() {
    int currentRow = ui->lightListWidget->currentRow();
    if (currentRow >= 0 && currentRow < lights_.size()) {
        // Save previous light properties
        if (currentLightIndex_ >= 0 && currentLightIndex_ < lights_.size()) {
            saveLightProperties();
        }
        
        currentLightIndex_ = currentRow;
        enableLightProperties(true);
        updateLightProperties();
    } else {
        currentLightIndex_ = -1;
        enableLightProperties(false);
        clearLightProperties();
    }
}

void AddLightFileDlg::onLightNameChanged() {
    if (currentLightIndex_ >= 0 && currentLightIndex_ < lights_.size()) {
        QString newName = ui->lightNameEdit->text();
        lights_[currentLightIndex_].name = newName;
        
        // Update list widget item text
        QListWidgetItem* item = ui->lightListWidget->item(currentLightIndex_);
        if (item) {
            item->setText(QString("%1 [Index: %2]")
                        .arg(newName)
                        .arg(lights_[currentLightIndex_].index));
        }
    }
}

void AddLightFileDlg::onLightIndexChanged() {
    if (currentLightIndex_ >= 0 && currentLightIndex_ < lights_.size()) {
        int newIndex = ui->lightIndexSpinBox->value();
        lights_[currentLightIndex_].index = newIndex;
        
        // Update list widget item text
        QListWidgetItem* item = ui->lightListWidget->item(currentLightIndex_);
        if (item) {
            item->setText(QString("%1 [Index: %2]")
                        .arg(lights_[currentLightIndex_].name)
                        .arg(newIndex));
        }
    }
}

void AddLightFileDlg::updateOpenColorPreview(const QColor& color) {
    QString styleSheet = QString("background-color: rgb(%1, %2, %3); border: 1px solid black;")
                        .arg(color.red())
                        .arg(color.green())
                        .arg(color.blue());
    ui->openColorPreview->setStyleSheet(styleSheet);
}

void AddLightFileDlg::updateCloseColorPreview(const QColor& color) {
    QString styleSheet = QString("background-color: rgb(%1, %2, %3); border: 1px solid black;")
                        .arg(color.red())
                        .arg(color.green())
                        .arg(color.blue());
    ui->closeColorPreview->setStyleSheet(styleSheet);
}

void AddLightFileDlg::addLightToList(const FileEntryLight::LightProperty& light) {
    QListWidgetItem* item = new QListWidgetItem(QString("%1 [Index: %2]")
                                              .arg(light.name)
                                              .arg(light.index));
    ui->lightListWidget->addItem(item);
}

void AddLightFileDlg::updateLightProperties() {
    if (currentLightIndex_ >= 0 && currentLightIndex_ < lights_.size()) {
        const FileEntryLight::LightProperty& light = lights_[currentLightIndex_];
        ui->lightNameEdit->setText(light.name);
        ui->lightIndexSpinBox->setValue(light.index);
    }
}

void AddLightFileDlg::saveLightProperties() {
    if (currentLightIndex_ >= 0 && currentLightIndex_ < lights_.size()) {
        lights_[currentLightIndex_].name = ui->lightNameEdit->text();
        lights_[currentLightIndex_].index = ui->lightIndexSpinBox->value();
    }
}

void AddLightFileDlg::clearLightProperties() {
    ui->lightNameEdit->clear();
    ui->lightIndexSpinBox->setValue(0);
}

void AddLightFileDlg::enableLightProperties(bool enabled) {
    ui->lightPropertiesGroupBox->setEnabled(enabled);
}

QString AddLightFileDlg::generateLightName() {
    return QString("Light %1").arg(lights_.size() + 1);
}

bool AddLightFileDlg::validateSpecificParams() {    
    // Check if at least one light is defined
    if (lights_.isEmpty()) {
        QMessageBox::warning(this, "Validation Error", "At least one light must be defined.");
        return false;
    }
    
    return true;
}

QString AddLightFileDlg::getFileFilter() const {
    return "Light Data Files (*.txt *.csv *.dat);;All Files (*.*)";
}

QString AddLightFileDlg::getDialogTitle() const {
    return "Add Light Data File";
}

void AddLightFileDlg::onSure() {
    // Save current light properties if any light is selected
    if (currentLightIndex_ >= 0) {
        saveLightProperties();
    }
    
    if (!validateSpecificParams()) {
        return;
    }

    // Get current workspace
    WorkSpace* workspace = WorkSpaceManager::Get().GetCurrent();
    if (!workspace) {
        QMessageBox::warning(this, tr("Error"), tr("Unable to get current workspace"));
        return;
    }

    
    // Create FileEntryLight and set properties
    auto lightEntry = CreateFileEntryLight(getSelectedFilePath());
    if (lightEntry) {
        // Set color properties
        lightEntry->SetColorProperties(colorProperties_);
        
        // Add all light properties
        for (const auto& light : lights_) {
            lightEntry->AddLightProperty(light);
        }
        
        // Add to workspace
        auto result = workspace->SetFileEntry(lightEntry);
        if (result != WorkSpace::FileEntryResult::Ok) {
            QString errorMsg;
            switch (result) {
            case WorkSpace::FileEntryResult::LimitExceeded:
                errorMsg = tr("Curve file count has reached the limit (9 files)");
                break;
            case WorkSpace::FileEntryResult::Duplicate:
                errorMsg = tr("File already exists");
                break;
            case WorkSpace::FileEntryResult::CopyFailed:
                errorMsg = tr("File copy failed");
                break;
            case WorkSpace::FileEntryResult::InvalidFile:
                errorMsg = tr("Invalid file");
                break;
            default:
                errorMsg = tr("Failed to add file");
                break;
            }
            QMessageBox::warning(this, tr("Error"), errorMsg);
            return;
        }

        accept();
    } else {
        QMessageBox::critical(this, "Error", "Failed to create light file entry.");
    }
}