#include "ProjectListDialog.hpp"

#include <QAbstractItemView>
#include <QColor>
#include <QComboBox>
#include <QFont>
#include <QHBoxLayout>
#include <QHeaderView>
#include <QLabel>
#include <QLineEdit>
#include <QPushButton>
#include <QStringList>
#include <QTableWidget>
#include <QTableWidgetItem>
#include <QVBoxLayout>

#include "Theme.hpp"

namespace geopro::app {
namespace {
QString statusText(int s) {
    switch (s) {
        case 1: return QStringLiteral("未开始");
        case 2: return QStringLiteral("进行中");
        default: return QString::number(s);
    }
}

// 状态语义色（寻路）：未开始=弱化中性、进行中=信息蓝(活动中)；未知状态用中性灰。
const char* statusColorHex(int s) {
    switch (s) {
        case 1: return "#8A93A3";        // 未开始：弱化
        case 2: return semantic::kInfo;  // 进行中：活动中
        default: return "#5A6B85";       // 未知：中性
    }
}
}  // namespace

ProjectListDialog::ProjectListDialog(data::IProjectRepository& repo, QWidget* parent)
    : QDialog(parent), repo_(repo) {
    setWindowTitle(QStringLiteral("全部项目"));
    resize(980, 560);

    auto* root = new QVBoxLayout(this);

    auto* filter = new QHBoxLayout();
    filter->addWidget(new QLabel(QStringLiteral("项目名称"), this));
    nameEdit_ = new QLineEdit(this);
    nameEdit_->setPlaceholderText(QStringLiteral("输入项目名称"));
    nameEdit_->setFixedWidth(200);
    filter->addWidget(nameEdit_);
    filter->addSpacing(8);
    filter->addWidget(new QLabel(QStringLiteral("项目类型"), this));
    typeCombo_ = new QComboBox(this);
    typeCombo_->setFixedWidth(160);
    filter->addWidget(typeCombo_);
    filter->addSpacing(8);
    auto* searchBtn = new QPushButton(QStringLiteral("搜索"), this);
    auto* resetBtn = new QPushButton(QStringLiteral("重置"), this);
    filter->addWidget(searchBtn);
    filter->addWidget(resetBtn);
    filter->addStretch();
    root->addLayout(filter);

    table_ = new QTableWidget(this);
    table_->setColumnCount(8);
    table_->setHorizontalHeaderLabels(QStringList{
        QStringLiteral("序号"), QStringLiteral("项目名称"), QStringLiteral("项目编号"),
        QStringLiteral("项目状态"), QStringLiteral("项目类型"), QStringLiteral("业主单位"),
        QStringLiteral("负责人"), QStringLiteral("创建时间")});
    table_->setEditTriggers(QAbstractItemView::NoEditTriggers);
    table_->setSelectionBehavior(QAbstractItemView::SelectRows);
    table_->setSelectionMode(QAbstractItemView::SingleSelection);
    table_->verticalHeader()->setVisible(false);
    table_->horizontalHeader()->setStretchLastSection(true);
    table_->setColumnWidth(0, 50);
    table_->setColumnWidth(1, 260);
    root->addWidget(table_, 1);

    auto* bottom = new QHBoxLayout();
    pageLabel_ = new QLabel(this);
    bottom->addWidget(pageLabel_);
    bottom->addStretch();
    prevBtn_ = new QPushButton(QStringLiteral("上一页"), this);
    nextBtn_ = new QPushButton(QStringLiteral("下一页"), this);
    bottom->addWidget(prevBtn_);
    bottom->addWidget(nextBtn_);
    root->addLayout(bottom);

    fillTypeFilter();

    QObject::connect(searchBtn, &QPushButton::clicked, this, [this]() {
        pageNo_ = 1;
        query();
    });
    QObject::connect(resetBtn, &QPushButton::clicked, this, [this]() {
        nameEdit_->clear();
        typeCombo_->setCurrentIndex(0);
        pageNo_ = 1;
        query();
    });
    QObject::connect(prevBtn_, &QPushButton::clicked, this, [this]() {
        if (pageNo_ > 1) {
            --pageNo_;
            query();
        }
    });
    QObject::connect(nextBtn_, &QPushButton::clicked, this, [this]() {
        if (pageNo_ * pageSize_ < total_) {
            ++pageNo_;
            query();
        }
    });
    QObject::connect(table_, &QTableWidget::cellClicked, this, [this](int row, int col) {
        if (col != 1) return;  // 仅"项目名称"列触发切换
        auto* item = table_->item(row, 1);
        if (!item) return;
        const QString id = item->data(Qt::UserRole).toString();
        if (id.isEmpty()) return;
        emit projectChosen(id, item->text());
        accept();
    });

    query();
}

void ProjectListDialog::fillTypeFilter() {
    typeCombo_->addItem(QStringLiteral("全部类型"), QString());
    const auto r = repo_.listProjectTypes();
    if (!r.ok) return;
    for (const auto& t : r.value)
        typeCombo_->addItem(QString::fromStdString(t.name), QString::fromStdString(t.id));
}

void ProjectListDialog::query() {
    const std::string name = nameEdit_->text().trimmed().toStdString();
    const std::string typeId = typeCombo_->currentData().toString().toStdString();
    const auto r = repo_.pageProjects(name, typeId, pageNo_, pageSize_);
    if (!r.ok) {
        table_->setRowCount(0);
        pageLabel_->setText(QStringLiteral("加载失败：%1").arg(QString::fromStdString(r.error)));
        prevBtn_->setEnabled(false);
        nextBtn_->setEnabled(false);
        return;
    }
    total_ = r.value.total;
    const auto& rows = r.value.rows;
    table_->setRowCount(static_cast<int>(rows.size()));
    for (int i = 0; i < static_cast<int>(rows.size()); ++i) {
        const auto& p = rows[i];
        auto set = [&](int col, const QString& text) {
            table_->setItem(i, col, new QTableWidgetItem(text));
        };
        set(0, QString::number((pageNo_ - 1) * pageSize_ + i + 1));
        auto* nameItem = new QTableWidgetItem(QString::fromStdString(p.name));
        nameItem->setData(Qt::UserRole, QString::fromStdString(p.id));
        nameItem->setForeground(QColor("#2D6CB5"));
        table_->setItem(i, 1, nameItem);
        set(2, QString::fromStdString(p.code));
        // 状态列语义着色：颜色承载“未开始/进行中”分类，进行中加粗强调（不只靠颜色）。
        auto* statusItem = new QTableWidgetItem(statusText(p.status));
        statusItem->setForeground(QColor(statusColorHex(p.status)));
        if (p.status == 2) {
            QFont f = statusItem->font();
            f.setBold(true);
            statusItem->setFont(f);
        }
        table_->setItem(i, 3, statusItem);
        set(4, QString::fromStdString(p.typeName));
        set(5, QString::fromStdString(p.ownerCompany));
        set(6, QString::fromStdString(p.responsiblePerson));
        set(7, QString::fromStdString(p.createTime));
    }
    const int pages = total_ > 0 ? (total_ + pageSize_ - 1) / pageSize_ : 1;
    pageLabel_->setText(QStringLiteral("共 %1 条    第 %2 / %3 页").arg(total_).arg(pageNo_).arg(pages));
    prevBtn_->setEnabled(pageNo_ > 1);
    nextBtn_->setEnabled(pageNo_ < pages);
}

}  // namespace geopro::app