#include "AddFriendDialog.h"
#include "TitleBar.h"
#include "UiHelpers.h"
#include "ImClient.h"
#include "Protocol.h"
#include "AvatarCache.h"
#include "common/protocol_def.h"

#include <QJsonObject>
#include <QHBoxLayout>
#include <QLabel>
#include <QLineEdit>
#include <QPointer>
#include <QPushButton>
#include <QVBoxLayout>

AddFriendDialog::AddFriendDialog(QWidget *parent)
    : QDialog(parent)
{
    setObjectName(QStringLiteral("ChromeWindow"));
    setWindowTitle(QStringLiteral("添加好友"));
    setFixedSize(400, 460);
    UiHelpers::setupFramelessDialog(this);

    auto *root = new QVBoxLayout(this);
    root->setContentsMargins(0, 0, 0, 0);
    root->setSpacing(0);

    auto *bar = new TitleBar(this);
    bar->setTitle(QStringLiteral("添加好友"));
    bar->setTheme(TitleBar::Light);
    bar->setMaximizable(false);
    bar->bind(this, false);
    root->addWidget(bar);

    auto *page = new QWidget(this);
    auto *lay = new QVBoxLayout(page);
    lay->setContentsMargins(24, 18, 24, 22);
    lay->setSpacing(10);

    auto *row = new QHBoxLayout();
    row->setSpacing(8);
    m_keyword = UiHelpers::lineEdit(QStringLiteral("输入账号搜索"), page);
    auto *search = UiHelpers::primaryButton(QStringLiteral("搜索"), page);
    search->setFixedWidth(72);
    search->setMinimumWidth(72);
    row->addWidget(m_keyword, 1);
    row->addWidget(search);

    m_error = UiHelpers::errorLabel(page);

    m_result = new QWidget(page);
    m_result->setObjectName(QStringLiteral("FriendResult"));
    m_result->setStyleSheet(QStringLiteral(
        "QWidget#FriendResult { background:#F7F7F7; border:none; }"
        "QLabel { background:transparent; border:none; }"));
    auto *rLay = new QVBoxLayout(m_result);
    rLay->setContentsMargins(12, 12, 12, 12);
    rLay->setSpacing(8);

    auto *top = new QHBoxLayout();
    top->setSpacing(10);
    m_avatar = new QLabel(m_result);
    m_avatar->setFixedSize(44, 44);
    m_avatar->setStyleSheet(QStringLiteral("background:transparent; border:none;"));
    auto *info = new QVBoxLayout();
    info->setSpacing(2);
    info->setContentsMargins(0, 0, 0, 0);
    m_name = new QLabel(m_result);
    m_name->setStyleSheet(QStringLiteral(
        "QLabel { font-size:14px; color:#1A1A1A; background:transparent; border:none; }"));
    m_account = new QLabel(m_result);
    m_account->setStyleSheet(QStringLiteral(
        "QLabel { font-size:12px; color:#9A9A9A; background:transparent; border:none; }"));
    info->addWidget(m_name);
    info->addWidget(m_account);
    m_addBtn = UiHelpers::primaryButton(QStringLiteral("添加"), m_result);
    m_addBtn->setFixedSize(72, 32);
    top->addWidget(m_avatar, 0, Qt::AlignTop);
    top->addLayout(info, 1);
    top->addWidget(m_addBtn, 0, Qt::AlignTop);

    m_status = new QLabel(m_result);
    m_status->setWordWrap(true);
    m_status->setStyleSheet(QStringLiteral(
        "QLabel { color:#FA5151; font-size:12px; background:transparent; border:none; }"));
    m_status->hide();

    m_verify = UiHelpers::lineEdit(QStringLiteral("验证信息（选填）"), m_result);
    m_verify->setMaxLength(50);
    m_verify->hide();

    rLay->addLayout(top);
    rLay->addWidget(m_status);
    rLay->addWidget(m_verify);
    m_result->hide();

    lay->addLayout(row);
    lay->addWidget(m_error);
    lay->addWidget(m_result);
    lay->addStretch();
    root->addWidget(page, 1);

    connect(search, &QPushButton::clicked, this, &AddFriendDialog::onSearch);
    connect(m_keyword, &QLineEdit::returnPressed, this, &AddFriendDialog::onSearch);
    connect(m_addBtn, &QPushButton::clicked, this, &AddFriendDialog::onAdd);
    m_keyword->setFocus();
}

void AddFriendDialog::clearResult()
{
    m_uid = 0;
    m_userAccount.clear();
    m_result->hide();
    m_status->hide();
    m_status->clear();
    m_verify->hide();
    m_verify->clear();
    m_addBtn->show();
}

void AddFriendDialog::showResult(const QJsonObject &user)
{
    m_uid = Proto::jsonI64(user, QStringLiteral("uid"));
    m_userAccount = user.value(QStringLiteral("account")).toString();
    QString name = user.value(QStringLiteral("nickname")).toString();
    if (name.isEmpty())
        name = m_userAccount;
    m_name->setText(name);
    m_account->setText(QStringLiteral("账号  %1").arg(m_userAccount));
    const int ver = static_cast<int>(Proto::jsonI64(user, QStringLiteral("avatar_ver")));
    AvatarCache::instance().applyTo(m_avatar, m_uid, ver, name, 44);

    const int rel = user.value(QStringLiteral("relation")).toInt();
    const int allowAdd = user.value(QStringLiteral("allow_add")).toInt(1);

    QString status;
    bool canAdd = false;
    if (m_uid == ImClient::instance().uid())
        status = QStringLiteral("这是你自己的账号");
    else if (rel == im::FriendRel::Friend)
        status = QStringLiteral("已是好友");
    else if (rel == im::FriendRel::Pending)
        status = QStringLiteral("已发送申请，等待对方处理");
    else if (rel == im::FriendRel::Incoming)
        status = QStringLiteral("对方已申请添加你，请到「新的朋友」处理");
    else if (allowAdd == 0)
        status = QStringLiteral("对方不允许添加好友");
    else
        canAdd = true;

    m_addBtn->setVisible(canAdd);
    m_addBtn->setEnabled(canAdd);
    m_addBtn->setText(QStringLiteral("添加"));
    m_verify->setVisible(canAdd);
    if (canAdd)
    {
        m_status->hide();
        m_status->clear();
        m_verify->setFocus();
    }
    else
    {
        m_status->setText(status);
        m_status->show();
    }
    m_result->show();
}

void AddFriendDialog::onSearch()
{
    const QString key = m_keyword->text().trimmed();
    UiHelpers::setError(m_error, QString());
    clearResult();
    if (key.isEmpty())
    {
        UiHelpers::setError(m_error, QStringLiteral("请输入账号或手机号"));
        return;
    }
    QPointer<AddFriendDialog> self(this);
    ImClient::instance().searchUser(key, [self](const QJsonObject &reply) {
        if (!self)
            return;
        if (!ImClient::ok(reply))
        {
            UiHelpers::setError(self->m_error, ImClient::messageOf(reply));
            return;
        }
        self->showResult(reply);
    });
}

void AddFriendDialog::onAdd()
{
    if (m_uid <= 0)
        return;
    m_addBtn->setEnabled(false);
    const QString message = m_verify->text().trimmed();
    QPointer<AddFriendDialog> self(this);
    ImClient::instance().addFriend(m_uid, message, [self](const QJsonObject &reply) {
        if (!self)
            return;
        if (!ImClient::ok(reply))
        {
            self->m_addBtn->setEnabled(true);
            UiHelpers::setError(self->m_error, ImClient::messageOf(reply));
            return;
        }
        self->m_addBtn->hide();
        self->m_verify->hide();
        self->m_status->setText(QStringLiteral("已发送好友申请，等待对方同意"));
        self->m_status->show();
        UiHelpers::showToast(self, QStringLiteral("已发送好友申请，等待对方同意"));
    });
}