// settingsdialog.cpp — Settings dialog with category list
#include "settingsdialog.h"
#include "networksettingspage.h"
#include "databasesettingspage.h"
#include "statuspage.h"
#include "nodespage.h"
#include "soundsettingspage.h"
#include "../transport/gui_bridge.h"
#include "../../lib/mem.h"
#include "../db/db_manager.h"
#include "../transport/utun_node.h"
extern "C" {
#include "../transport/chat_core.h"
}
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QPushButton>
#include <QLabel>
#include <QFormLayout>
#include <QLineEdit>
#include <QFile>
#include <QTextStream>

SettingsDialog::SettingsDialog(const QString& configPath, DbManager* db, UtunNode* node, QWidget* parent)
    : QDialog(parent)
    , m_configPath(configPath)
{
    setWindowTitle("Settings");
    setMinimumSize(760, 460);
    setModal(true);

    auto* mainLayout = new QHBoxLayout(this);
    mainLayout->setSpacing(0);
    mainLayout->setContentsMargins(0, 0, 0, 0);

    // --- Left sidebar: category list ---
    m_categoryList = new QListWidget(this);
    m_categoryList->setFixedWidth(150);
    m_categoryList->setStyleSheet(
        "QListWidget { border: none; border-right: 1px solid palette(mid);"
        " background: palette(window); font-size: 13px; }"
        "QListWidget::item { padding: 10px 14px; }"
        "QListWidget::item:selected { background: #3390EC; color: white; }");
    m_categoryList->addItem("Profile");
    m_categoryList->addItem("Network");
    m_categoryList->addItem("Database");
    m_categoryList->addItem("Status");
    m_categoryList->addItem("Nodes");
    m_categoryList->addItem("Sound");
    mainLayout->addWidget(m_categoryList);

    // --- Right panel: stacked pages ---
    auto* rightPanel = new QWidget(this);
    auto* rightLayout = new QVBoxLayout(rightPanel);
    rightLayout->setContentsMargins(20, 16, 20, 16);
    rightLayout->setSpacing(0);

    m_pages = new QStackedWidget(rightPanel);

    // Profile page
    auto* profilePage = new QWidget(m_pages);
    auto* profLayout = new QFormLayout(profilePage);
    profLayout->setContentsMargins(0, 12, 0, 0);
    auto* nameLabel = new QLabel("Display name:", profilePage);
    m_nicknameEdit = new QLineEdit(profilePage);
    m_nicknameEdit->setPlaceholderText("Your name (shown to others)");
    m_nicknameEdit->setMaxLength(32);
    m_nicknameEdit->setStyleSheet(
        "QLineEdit { border: 1px solid palette(mid); border-radius: 4px;"
        " padding: 6px 10px; font-size: 13px; background: palette(base); }");
    profLayout->addRow(nameLabel, m_nicknameEdit);
    m_pages->addWidget(profilePage);

    // Network page
    m_networkPage = new NetworkSettingsPage(m_pages);
    m_pages->addWidget(m_networkPage);

    // Database page
    m_databasePage = new DatabaseSettingsPage(db, m_pages);
    m_pages->addWidget(m_databasePage);

    // Status page
    m_statusPage = new StatusPage(node, m_pages);
    m_pages->addWidget(m_statusPage);

    // Nodes page
    m_nodesPage = new NodesPage(db, m_pages);
    m_pages->addWidget(m_nodesPage);

    m_soundPage = new SoundSettingsPage(db, m_pages);
    m_pages->addWidget(m_soundPage);
    rightLayout->addWidget(m_pages, 1);

    // --- Bottom buttons ---
    auto* btnLayout = new QHBoxLayout();
    btnLayout->setSpacing(8);
    btnLayout->addStretch();

    auto* cancelBtn = new QPushButton("Cancel", rightPanel);
    cancelBtn->setFixedWidth(90);
    cancelBtn->setStyleSheet(
        "QPushButton { border: 1px solid palette(mid); border-radius: 4px;"
        " padding: 6px 16px; font-size: 13px; background: palette(button); }"
        "QPushButton:hover { background: palette(light); }");
    connect(cancelBtn, &QPushButton::clicked, this, &QDialog::reject);
    btnLayout->addWidget(cancelBtn);

    m_saveBtn = new QPushButton("Save", rightPanel);
    m_saveBtn->setFixedWidth(90);
    m_saveBtn->setDefault(true);
    m_saveBtn->setStyleSheet(
        "QPushButton { border: none; border-radius: 4px;"
        " padding: 6px 16px; font-size: 13px; font-weight: bold;"
        " background: #3390EC; color: white; }"
        "QPushButton:hover { background: #2B7ED4; }");
    connect(m_saveBtn, &QPushButton::clicked, this, &SettingsDialog::onSave);
    btnLayout->addWidget(m_saveBtn);

    rightLayout->addLayout(btnLayout);
    mainLayout->addWidget(rightPanel, 1);

    connect(m_categoryList, &QListWidget::currentRowChanged,
            this, &SettingsDialog::onCategoryChanged);

    // Load current values
    loadProfileFromConfig(m_configPath);
    m_networkPage->loadFromConfig(m_configPath);
    m_soundPage->loadFromDb();
    m_categoryList->setCurrentRow(0);
}

void SettingsDialog::loadProfileFromConfig(const QString& path) {
    QFile f(path);
    if (!f.open(QIODevice::ReadOnly | QIODevice::Text)) return;
    QTextStream in(&f);
    while (!in.atEnd()) {
        QString line = in.readLine().trimmed();
        if (line.startsWith("my_node_name=")) {
            QString nm = line.mid(QString("my_node_name=").size()).trimmed();
            m_nicknameEdit->setText(nm);
            m_oldNickname = nm;
            break;
        }
    }
}

void SettingsDialog::onCategoryChanged(int row) {
    m_pages->setCurrentIndex(row);
    if (row == 2) m_databasePage->refreshStatus();
    if (row == 3) m_statusPage->refreshStatus();
    if (row == 4) m_nodesPage->refreshNodes();
    if (row == 5) m_soundPage->loadFromDb();
}

void SettingsDialog::onSave() {
    QString newName = m_nicknameEdit->text().trimmed();

    /* update name in uTun if changed */
    if (newName != m_oldNickname) {
        char* name_copy = u_strdup(newName.toUtf8().constData());
        if (name_copy) gui_bridge_post_uasync_fn(chat_core_update_my_name_trampoline, name_copy);
        m_oldNickname = newName;
    }

    // Save nickname to config
    QFile f(m_configPath);
    if (!f.open(QIODevice::ReadOnly | QIODevice::Text)) { accept(); return; }
    QString content = f.readAll();
    f.close();

    QTextStream ts(&content);
    QStringList lines;
    while (!ts.atEnd()) lines << ts.readLine();

    bool found = false;
    for (int i = 0; i < lines.size(); i++) {
        if (lines[i].trimmed().startsWith("my_node_name=")) {
            lines[i] = "my_node_name=" + newName;
            found = true;
        } else if (!found && lines[i].trimmed() == "[global]") {
            lines.insert(i + 1, "my_node_name=" + newName);
            found = true;
        }
    }
    if (!found) lines << "my_node_name=" + newName;

    f.open(QIODevice::WriteOnly | QIODevice::Truncate | QIODevice::Text);
    f.write(lines.join('\n').toUtf8());
    f.close();

    m_networkPage->saveToConfig(m_configPath);
    m_soundPage->applyAndSave();
    accept();
}