#include <QCoreApplication>
#include "channelsettingsdialog.h"
#include "avatars/groupavatarmanager.h"
#include "../db/db_manager.h"
#include "../transport/gui_bridge.h"
#include "../../lib/mem.h"
extern "C" {
#include "chat/chat_core.h"
}
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QPushButton>
#include <QLabel>
#include <QFileDialog>
#include <cstring>

ChannelSettingsDialog::ChannelSettingsDialog(const QString& channelId, DbManager* db, QWidget* parent)
    : QDialog(parent)
    , m_channelId(channelId)
    , m_db(db)
{
    setWindowTitle(QCoreApplication::translate("ChatGui", "Channel Settings"));
    setMinimumWidth(340);
    setModal(true);

    auto* layout = new QVBoxLayout(this);
    layout->setContentsMargins(20, 16, 20, 16);
    layout->setSpacing(12);

    auto* titleLabel = new QLabel(QCoreApplication::translate("ChatGui", "Settings for channel"), this);
    titleLabel->setStyleSheet("font-weight: bold; font-size: 14px;");
    layout->addWidget(titleLabel);

    auto* chIdLabel = new QLabel(channelId, this);
    chIdLabel->setStyleSheet("color: gray; font-size: 11px;");
    chIdLabel->setWordWrap(true);
    layout->addWidget(chIdLabel);

    if (auto* avatars = GroupAvatarManager::instance()) {
        auto* preview = new QLabel(this); preview->setFixedSize(64, 64); layout->addWidget(preview);
        auto* buttons = new QHBoxLayout;
        auto* upload = new QPushButton(QCoreApplication::translate("ChatGui", "Upload group avatar"), this);
        auto* remove = new QPushButton(QCoreApplication::translate("ChatGui", "Remove group avatar"), this);
        upload->setObjectName("uploadGroupAvatar"); remove->setObjectName("removeGroupAvatar");
        bool hasKey = false;
        if (db && db->isOpen()) for (const auto& row : db->getChannels())
            if (row.channelId == channelId) hasKey = row.ed25519_privkey.size() == 32;
        upload->setEnabled(hasKey); remove->setEnabled(hasKey);
        auto* info = new QLabel(QCoreApplication::translate("ChatGui", "Group avatar: up to 16 KiB. Changes apply immediately and require the group key."), this);
        info->setWordWrap(true); auto* result = new QLabel(this); result->setWordWrap(true);
        buttons->addWidget(upload); buttons->addWidget(remove); layout->addLayout(buttons); layout->addWidget(info); layout->addWidget(result);
        auto refresh = [avatars, preview, channelId] {
            const QImage image = avatars->image(channelId);
            if (image.isNull()) { preview->setPixmap(QPixmap()); preview->setText(QCoreApplication::translate("ChatGui", "No avatar")); }
            else preview->setPixmap(QPixmap::fromImage(image).scaled(64, 64, Qt::KeepAspectRatio, Qt::SmoothTransformation));
        };
        connect(avatars, &GroupAvatarManager::changed, this, [channelId, refresh](const QString& channel) { if (channel == channelId) refresh(); });
        connect(avatars, &GroupAvatarManager::status, this, [channelId, result, refresh](const QString& channel, const QString& message) {
            if (channel == channelId) { result->setText(message); refresh(); }
        });
        connect(upload, &QPushButton::clicked, this, [this, avatars, channelId] {
            const QString file = QFileDialog::getOpenFileName(this, QCoreApplication::translate("ChatGui", "Choose avatar"), {},
                QCoreApplication::translate("ChatGui", "Images (*.png *.jpg *.jpeg *.webp)"));
            if (!file.isEmpty()) avatars->upload(channelId, file);
        });
        connect(remove, &QPushButton::clicked, this, [avatars, channelId] { avatars->remove(channelId); }); refresh();
    }

    layout->addSpacing(8);

    m_autoPlayVoice = new QCheckBox(QCoreApplication::translate("ChatGui", "Auto-play voice messages on receive"), this);
    m_autoPlayVoice->setToolTip(QCoreApplication::translate("ChatGui",
        "Voice messages will play automatically when received. Multiple messages queue up and play "
        "sequentially without interrupting current playback."));
    layout->addWidget(m_autoPlayVoice);

    m_soundOnMessage = new QCheckBox(QCoreApplication::translate("ChatGui", "Play sound on incoming message"), this);
    m_soundOnMessage->setToolTip(QCoreApplication::translate("ChatGui", "Play a notification sound when a message arrives in this channel."));
    layout->addWidget(m_soundOnMessage);

    m_pttMode = new QCheckBox(QCoreApplication::translate("ChatGui", "Push-To-Talk (PTT) mode"), this);
    m_pttMode->setToolTip(QCoreApplication::translate("ChatGui", "Record voice messages with push-to-talk. (Coming soon)"));
    m_pttMode->setEnabled(false);
    layout->addWidget(m_pttMode);

    layout->addStretch();

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

    auto* cancelBtn = new QPushButton(QCoreApplication::translate("ChatGui", "Cancel"), this);
    cancelBtn->setMinimumWidth(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);

    auto* saveBtn = new QPushButton(QCoreApplication::translate("ChatGui", "Save"), this);
    saveBtn->setMinimumWidth(90);
    saveBtn->setDefault(true);
    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(saveBtn, &QPushButton::clicked, this, &ChannelSettingsDialog::onSave);
    btnLayout->addWidget(saveBtn);

    layout->addLayout(btnLayout);

    if (m_db && m_db->isOpen()) {
        QString autoPlayKey = QStringLiteral("ch_%1_auto_play_voice").arg(channelId);
        m_autoPlayVoice->setChecked(m_db->getUiStateInt(autoPlayKey, 0) != 0);
        QString soundKey = QStringLiteral("ch_%1_sound_on_message").arg(channelId);
        m_soundOnMessage->setChecked(m_db->getUiStateInt(soundKey, 1) != 0);
        QString pttKey = QStringLiteral("ch_%1_ptt_mode").arg(channelId);
        m_pttMode->setChecked(m_db->getUiStateInt(pttKey, 0) != 0);
    }
}

void ChannelSettingsDialog::onSave() {
    auto saveKey = [&](const char* suffix, int val) {
        QString key = QStringLiteral("ch_%1_%2").arg(m_channelId, QString::fromUtf8(suffix));
        QByteArray keyBA = key.toUtf8();
        QByteArray valBA = QByteArray::number(val);
        size_t klen = (size_t)keyBA.size(), vlen = (size_t)valBA.size();
        size_t total = klen + 1 + vlen + 1;
        if (total <= 256) {
            struct save_ui_state_arg* arg = (struct save_ui_state_arg*)u_malloc(sizeof(struct save_ui_state_arg));
            if (!arg) return;
            arg->inst = gui_bridge_get_inst();
            memcpy(arg->data, keyBA.constData(), klen + 1);
            memcpy(arg->data + klen + 1, valBA.constData(), vlen + 1);
            gui_bridge_post_uasync_fn(chat_core_save_ui_state_trampoline, arg);
        }
    };
    saveKey("auto_play_voice", m_autoPlayVoice->isChecked() ? 1 : 0);
    saveKey("ptt_mode",         m_pttMode->isChecked() ? 1 : 0);

    /* sound_on_message: сохранить + разослать пирам (троттлинг db_sync на сервере) */
    {
        int on = m_soundOnMessage->isChecked() ? 1 : 0;
        QByteArray chIdBA = m_channelId.toUtf8();
        struct chat_sound_arg* arg = (struct chat_sound_arg*)u_malloc(sizeof(struct chat_sound_arg));
        if (arg) {
            memset(arg, 0, sizeof(*arg));
            arg->inst = gui_bridge_get_inst();
            strncpy(arg->ch_id, chIdBA.constData(), sizeof(arg->ch_id) - 1);
            arg->on = on;
            gui_bridge_post_uasync_fn(chat_core_set_sound_on_message_trampoline, arg);
        }
    }
    accept();
}