#include <qfile.h>
#include <string>
#include <unordered_map>
#include <mutex>
#include <qdatetime.h>
#include <memory>
#include <qtextstream.h>
#include <QtSql/QSqlDatabase>
#include <QtSql/QSqlQuery>
#include <QtSql/QSqlError>
#include <QtSql/QSqlRecord>
#include <QVariant>
#include <QDebug>
#include <QString>
#include <QList>
#include <QMap>
#include <qcoreapplication.h>
#include <qdir.h>
#include <qtimer.h>
#include <chrono>
#include <qobject.h>
#include <generalJsonParsing.hpp>
#include <iostream>
#include <fstream>
#include <qelapsedtimer.h>
#include <QQueue>
class SQLiteDB {
public:
    SQLiteDB(const QString& dbPath, const QString& dbName)
        : m_dbName(dbName), m_dbPath(dbPath) {
        connect();
    }
    ~SQLiteDB() { disconnect(); };
    // 执行无返回值的SQL语句（如插入、删除、更新）
    bool execute(const QString& queryStr, const QVariantList& args = {}) {
        QSqlQuery query;
        query.prepare(queryStr);

        for (int i = 0; i < args.size(); ++i) {
            query.bindValue(i, args[i]);
        }

        if (!query.exec()) {
            qCritical() << "SQL error:" << query.lastError().text();
            qCritical() << "Query:" << queryStr;
            return false;
        }
        return true;
    }
    // 查询数据，返回结果集
    QList<QMap<QString, QVariant>> query(const QString& queryStr, const QVariantList& args = {}) {
        QList<QMap<QString, QVariant>> results;
        QSqlQuery query;
        query.prepare(queryStr);

        for (int i = 0; i < args.size(); ++i) {
            query.bindValue(i, args[i]);
        }

        if (!query.exec()) {
            qCritical() << "SQL error:" << query.lastError().text();
            qCritical() << "Query:" << queryStr;
            return results;
        }

        while (query.next()) {
            QMap<QString, QVariant> row;
            for (int i = 0; i < query.record().count(); ++i) {
                row.insert(query.record().fieldName(i), query.value(i));
            }
            results.append(row);
        }

        return results;
    }
    // 检查数据库是否已连接
    bool isConnected() const {
        return m_db.isOpen();
    }
    ////////////////BASE//////////////////////
    bool createTable(const QString& tableName, const QList<std::pair<QString, QString>>& columns) {
        if (columns.empty()) {
            qDebug() << "Create table failed: columns are empty.";
            return false;
        }

        QStringList columnDefinitions;
        for (const auto& pair : columns) {
            columnDefinitions << QString("%1 %2").arg(pair.first).arg(pair.second);
        }

        // 确保表名被双引号包围，处理特殊字符的表名
        QString sql = QString("CREATE TABLE IF NOT EXISTS \"%1\" (%2)")
            .arg(tableName)
            .arg(columnDefinitions.join(", "));
        QSqlQuery query(m_db);
        bool res = query.exec(sql);
        return res;
    }

    bool dropTable(const QString& tableName) {
        QString sql = QString("DROP TABLE IF EXISTS %1").arg(tableName);
        return execute(sql);
    }

    bool addColumn(const QString& tableName, const QString& columnName, const QString& columnType) {
        // 检查列名和类型是否有效
        if (columnName.isEmpty() || columnType.isEmpty()) {
            qDebug() << "Add column failed: column name or type is empty.";
            return false;
        }

        // 构造 SQL 语句
        QString sql = QString("ALTER TABLE \"%1\" ADD COLUMN \"%2\" %3").arg(tableName, columnName, columnType);

        QSqlQuery query(m_db);
        query.prepare(sql);

        // 执行 SQL 语句
        if (!query.exec()) {
            qDebug() << "Add column failed:" << query.lastError().text();
            return false;
        }

        qDebug() << "Column" << columnName << "added to table" << tableName;
        return true;
    }


    bool tableExists(const QString& tableName) {
        // 使用 sqlite_master 查询表是否存在
        QString sql = QString("SELECT name FROM sqlite_master WHERE type='table' AND name='%1';").arg(tableName);

        QList<QMap<QString, QVariant>> result = query(sql);
        return !result.isEmpty();  // 如果结果不为空，则表示表存在
    }

    bool _insert(const QString& tableName,
        const std::map<QString, QVariant>& data) {
        // 如果数据为空，返回 false
        if (data.empty()) {
            qDebug() << "Insert failed: data is empty.";
            return false;
        }

        // 如果表名为空，返回 false
        if (tableName.isEmpty()) {
            qDebug() << "Insert failed: tableName is empty.";
            return false;
        }

        QStringList columns, values;
        for (const auto& pair : data) {
            columns << pair.first;
            // 直接插入数据（明文传输），需要确保数据已经适当转义
            values << "'" + pair.second.toString().replace("'", "''") + "'"; // 处理引号
        }

        // 构造 SQL 查询语句（不使用绑定参数）
        QString sql = QString("INSERT INTO \"%1\" (%2) VALUES (%3)")
            .arg(tableName)   // 使用双引号包围表名，确保兼容特殊字符
            .arg(columns.join(", "))
            .arg(values.join(", "));

        qDebug() << "Generated SQL: " << sql;

        QSqlQuery query(m_db);

        // 检查数据库连接
        if (!m_db.isOpen()) {
            qDebug() << "Database is not open!";
            return false;
        }

        // 执行查询并检查错误
        if (!query.exec(sql)) {
            qDebug() << "Insert failed:" << query.lastError().text();
            return false;
        }

        return true;
    }

    bool _update(const QString& tableName,
        const std::map<QString, QVariant>& data,
        const std::map<QString, QVariant>& conditions) {
        if (data.empty() || conditions.empty()) {
            qDebug() << "Update failed: data or conditions are empty.";
            return false;
        }

        QStringList setClauses;
        for (const auto& pair : data) {
            QString value = pair.second.toString().replace("'", "''"); // 防止单引号注入
            setClauses << QString("%1 = '%2'").arg(pair.first).arg(value);
        }

        QStringList whereClauses;
        for (const auto& pair : conditions) {
            QString conditionValue = pair.second.toString().replace("'", "''");
            whereClauses << QString("%1 = '%2'").arg(pair.first).arg(conditionValue);
        }

        // 构造 SQL 查询语句（不使用绑定参数）
        QString sql = QString("UPDATE \"%1\" SET %2 WHERE %3")
            .arg(tableName)
            .arg(setClauses.join(", "))
            .arg(whereClauses.join(" AND "));

        qDebug() << "Generated SQL: " << sql;

        QSqlQuery query(m_db);

        // 检查数据库连接
        if (!m_db.isOpen()) {
            qDebug() << "Database is not open!";
            return false;
        }

        // 执行查询并检查错误
        if (!query.exec(sql)) {
            qDebug() << "Update failed:" << query.lastError().text();
            return false;
        }

        return true;
    }


    bool _delete(const QString& tableName,
        const std::map<QString, QVariant>& conditions) {
        if (conditions.empty()) {
            qDebug() << "Delete failed: conditions are empty.";
            return false;
        }

        QStringList whereClauses;
        for (const auto& pair : conditions) {
            whereClauses << QString("%1 = :%2").arg(pair.first).arg(pair.first + "_condition");
        }

        QString sql = QString("DELETE FROM \"%1\" WHERE %2")
            .arg(tableName)
            .arg(whereClauses.join(" AND "));

        QSqlQuery query(m_db);
        query.prepare(sql);

        // 绑定条件参数
        for (const auto& pair : conditions) {
            query.bindValue(":" + pair.first + "_condition", QVariant::fromValue(pair.second));
        }

        if (!query.exec()) {
            qDebug() << "Delete failed:" << query.lastError().text();
            return false;
        }

        return true;
    }

    std::vector<std::map<QString, QVariant>> _search(const QString& tableName,
        const QStringList& columns,
        const std::map<QString, QVariant>& conditions = {}) {
        // 如果没有指定列名，则选择所有列
        QStringList selectColumns = columns.isEmpty() ? QStringList("*") : columns;

        // 构建基本的 SQL 查询
        QString sql = QString("SELECT %1 FROM \"%2\"").arg(selectColumns.join(", "), tableName);

        if (!conditions.empty()) {
            QStringList whereClauses;
            for (const auto& pair : conditions) {
                // 直接拼接条件，确保值已经处理好以防 SQL 注入
                QString value = pair.second.toString().replace("'", "''");  // 防止单引号注入
                whereClauses << QString("%1 = '%2'").arg(pair.first).arg(value);
            }
            sql += " WHERE " + whereClauses.join(" AND ");
        }

        qDebug() << "Generated SQL: " << sql;

        QSqlQuery query(m_db);

        // 检查数据库连接
        if (!m_db.isOpen()) {
            qDebug() << "Database is not open!";
            return {};
        }

        // 执行查询并检查错误
        if (!query.exec(sql)) {
            qDebug() << "Search failed:" << query.lastError().text();
            return {};
        }

        std::vector<std::map<QString, QVariant>> results;
        while (query.next()) {
            std::map<QString, QVariant> row;
            for (int i = 0; i < query.record().count(); ++i) {
                row[query.record().fieldName(i)] = query.value(i);
            }
            results.push_back(row);
        }

        return results;
    }

    ///////////////////EX//FUNC/////////////////
    QList<QMap<QString, QVariant>> queryTabelData(const QString& tableName) {
        QString sql = QString("SELECT * FROM \"%1\"").arg(tableName);
        return query(sql);
    }

    bool exportTableToCSV(const QString& tableName, const QString& filePath, std::mutex& _mutex) {
        using namespace std::chrono;  // 便于使用 chrono 相关功能
        // 记录开始时间
        auto start = high_resolution_clock::now();
        // 查询表中的所有数据
        QString csvFileName = filePath + "/" + tableName + ".csv";
        QString sql = QString("SELECT * FROM \"%1\"").arg(tableName);
        QSqlQuery query(m_db);

        if (!query.exec(sql)) {
            qCritical() << "Query execution failed: " << query.lastError().text();
            return false;
        }

        // 如果查询没有返回数据，返回 false
        if (!query.next()) {
            qDebug() << "No data found in table" << tableName;
            return false;
        }

        // 打开文件进行写入
        QFile file(csvFileName);
        if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) {
            qCritical() << "Failed to open file" << csvFileName;
            return false;
        }

        QTextStream out(&file);

        // 获取列名顺序
        QSqlRecord record = query.record();
        QStringList columns;
        for (int i = 0; i < record.count(); ++i) {
            columns << record.fieldName(i);  // 保证列名按查询结果顺序提取
        }

        // 写入表头（列名）
        out << columns.join(",") << "\n";  // 表头以逗号分隔

        // 写入数据行
        do {
            QStringList values;
            for (const auto& column : columns) {
                values << query.value(column).toString();  // 获取每列的值，保持列名顺序
            }
            out << values.join(",") << "\n";  // 每行数据以逗号分隔
        } while (query.next());  // 循环处理所有数据行

        file.close();  // 关闭文件
        // 记录结束时间
        auto end = high_resolution_clock::now();

        // 计算耗时
        auto duration = duration_cast<milliseconds>(end - start);
        qDebug() << csvFileName << "EXPORT CSV COST: " << duration.count() << "ms";
        return true;
    }


private:
    bool connect() {
        // 检查数据库文件是否存在
        if (!QFile::exists(m_dbPath + m_dbName + ".db")) {
            QDir().mkpath(m_dbPath);
            qDebug() << "Database file does not exist. Creating a new database:" << m_dbName;
        }
        QCoreApplication::addLibraryPath("./");
        // 添加 SQLite 数据库驱动
        m_db = QSqlDatabase::addDatabase("QSQLITE");
        m_db.setDatabaseName(m_dbPath + m_dbName + ".db");

        // 打开数据库
        if (!m_db.open()) {
            qCritical() << "Failed to open or create database:" << m_db.lastError().text();
            return false;
        }

        qDebug() << "Connected to SQLite database:" << m_dbPath + m_dbName;
        createTable("setting",
            {
                {"id","INTEGER PRIMARY KEY AUTOINCREMENT"} ,
            });
        return true;
    }
    // 关闭数据库连接
    void disconnect() {
        if (m_db.isOpen()) {
            m_db.close();
            qDebug() << "Database closed.";
        }
    }
    QString m_dbName;
    QString m_dbPath;
    QSqlDatabase m_db;
};

class CsvWriter
{
public:
    CsvWriter()
    {
        try
        {
            m_json = readJsonFromPath("./sqldrivers/sqliteCfg.json");
            for (auto& data : m_json["数据列表"]) {
                db_InitColumns.append({ QString::fromStdString(data),"TEXT" });
            }
            for (auto& data : m_json["链接到UI表格数据列表"].items()) {
                csvAndChartLink[QString::fromStdString(data.key())] = QString::fromStdString(data.value());
            }
            if (m_json["新增数据列表"].size() > 0) {
                for (auto& data : m_json["新增数据列表"]) {
                    db_newCol.append({ QString::fromStdString(data),"TEXT" });
                }
                m_json["新增数据列表"].clear();
                saveJsonFromPath("./sqldrivers/sqliteCfg.json", m_json);
            }
            for (auto& data : m_json["判断NG依据数据列表"]) {
                isNgDepends.push_back(QString::fromStdString(data));
            }
        }
        catch (const std::exception&)
        {
            std::cerr << "readJsonFromPath error" << std::endl;
        }
        init();
    }
    ~CsvWriter()
    {
        //stopAutoExport();
    }
    std::map<QString, QString>csvAndChartLink;
    void addtData(const QString& snCode, const std::map<QString, QVariant>& data) {
        std::lock_guard<std::mutex> locker(_mutex);
        QString currentProcessCsvName = getCurrentProcessCsvName();
        if (currentProcessCsvName != currentProcessCsvNameCache)
            if (_db->createTable(currentProcessCsvName, db_InitColumns))
                currentProcessCsvNameCache = currentProcessCsvName;
        auto res = _db->_search(currentProcessCsvName, {}, { {"条码",snCode} });
        if (res.empty() == true)//当前数据为空时查询过去的数据是否为空 
        {
            auto lastRes = _db->_search(getLastProcessCsvName(), {}, { {"条码",snCode} });
            if (lastRes.empty() == true)//过去的数据也为空 则视作现在要插入的数据为全新的数据
            {
                std::map<QString, QVariant> insertData = data;
                insertData["条码"] = snCode;
                insertData["创建时间"] = QDateTime::currentDateTime().toString("hh:mm:ss");
                insertData["修改时间"] = QDateTime::currentDateTime().toString("hh:mm:ss");
                _db->_insert(currentProcessCsvName, insertData);
            }
            else//过去的数据不为空 更新到过去的数据上
            {
                std::map<QString, QVariant> updateData = data;
                updateData["修改时间"] = QDateTime::currentDateTime().toString("hh:mm:ss");
                _db->_update(getLastProcessCsvName(), updateData, { {"条码",snCode} });
            }

        }
        else//当前数据不为空 更新到当前数据上
        {
            std::map<QString, QVariant> updateData = data;
            updateData["修改时间"] = QDateTime::currentDateTime().toString("hh:mm:ss");
            _db->_update(getCurrentProcessCsvName(), updateData, { {"条码",snCode} });
        }
        if (timer.elapsed() > m_intervalMs)
        {
            exportCsv();
            timer.start();
        }
    }
    bool isNewData(const QString& snCode) {
        std::lock_guard<std::mutex> locker(_mutex);
        auto res = _db->_search(getCurrentProcessCsvName(), {}, { {"条码",snCode} });
        return res.empty();
    }
    bool isNgData(const QString& snCode) {
        std::lock_guard<std::mutex> locker(_mutex);
        auto res = _db->_search(getCurrentProcessCsvName(), {}, { {"条码",snCode} });
        if (res.empty() == true)
            return false;
        for (auto& data : isNgDepends) {
            if (res[0][data].toString() == "NG")
                return true;
        }
        return false;
    }
private:
    std::vector<QString> isNgDepends;
    QQueue<std::pair< QString, std::map<QString, QVariant>> > addDataCacheQueue;
    std::mutex _mutex;
    SQLiteDB* _db;
    int m_intervalMs = 10000;
    QElapsedTimer timer;
    QString currentProcessCsvNameCache;
    nlohmann::json m_json;
    QList<std::pair<QString, QString>> db_newCol = {};
    QList<std::pair<QString, QString>> db_InitColumns = {
    {"条码", "TEXT NOT NULL PRIMARY KEY"},
    {"创建时间", "TEXT"},
    {"修改时间", "TEXT"},
    {"CT", "TEXT"},
    };
    //void run()
    //{
    //    init();
    //    while (m_running == true) {
    //        QThread::msleep(m_intervalMs);
    //        while (addDataCacheQueue.empty() == false)
    //        {
    //            auto data = addDataCacheQueue.dequeue();
    //            addtData(data.first, data.second);
    //        }
    //        exportCsv();
    //    }
    //    delete _db;
    //}
    void init(SQLiteDB* database_ptr = nullptr)
    {
        std::lock_guard<std::mutex> locker(_mutex);
        if(database_ptr == nullptr)
            _db = new SQLiteDB("./sqlDatabse/", "database");
        if (!_db->createTable(getLastProcessCsvName(), db_InitColumns)) {
            qDebug() << "Failed to create table " << getLastProcessCsvName();
        }
        currentProcessCsvNameCache = getCurrentProcessCsvName();
        if (!_db->createTable(currentProcessCsvNameCache, db_InitColumns)) {
            qDebug() << "Failed to create table " << currentProcessCsvNameCache;
        }
        for (auto& data : db_newCol) {
            _db->addColumn(getLastProcessCsvName(), data.first, data.second);
            _db->addColumn(getCurrentProcessCsvName(), data.first, data.second);
        }
        timer.start();
    }
    QString getCurrentProcessCsvName() {
        // 获取当前时间
        QDateTime currentDateTime = QDateTime::currentDateTime();

        // 获取当前小时和分钟
        int hour = currentDateTime.time().hour();
        int minute = currentDateTime.time().minute();

        // 判断是否在白班时间范围（8:30到20:30）
        bool isDayShift = (hour > 8 || (hour == 8 && minute >= 30)) && (hour < 20 || (hour == 20 && minute <= 30));

        // 判断是否是前一天的夜班
        bool isDayBefore = hour <= 8 || (hour == 8 && minute <= 29);

        // 获取当前日期（yyyy-MM-dd格式）
        QString dateStr;
        if (isDayBefore == true)
            dateStr = currentDateTime.addDays(-1).toString("yyyy-MM-dd");
        else
            dateStr = currentDateTime.toString("yyyy-MM-dd");

        // 根据时间段返回班次信息
        if (isDayShift) {
            return (dateStr + "白班");
        }
        else {
            return (dateStr + "夜班");
        }
    }
    QString getLastProcessCsvName() {
        // 获取当前时间
        QDateTime currentDateTime = QDateTime::currentDateTime();

        // 获取当前小时和分钟
        int hour = currentDateTime.time().hour();
        int minute = currentDateTime.time().minute();

        // 判断是否在白班时间范围（8:30到20:30）
        bool isDayShift = (hour == 8 && minute >= 30) && (hour == 20 && minute <= 30);
        // 判断是否为上一天
        bool isDayBefore = hour == 20 && minute <= 30;
        // 获取上一班的日期
        QDateTime lastShiftDateTime;
        if (isDayBefore) {
            // 当前是白班，上一班是前一天的夜班
            lastShiftDateTime = currentDateTime.addDays(-1);
        }
        else
            lastShiftDateTime = currentDateTime;

        // 获取上一班的日期（yyyy-MM-dd格式）
        QString dateStr = lastShiftDateTime.toString("yyyy-MM-dd");

        // 根据时间段返回班次信息
        if (isDayShift) {
            return (dateStr + "夜班"); // 上一班是夜班
        }
        else {
            return (dateStr + "白班"); // 上一班是白班
        }
    }
    //void startAutoExport(int intervalMs = 10000) {
    //    m_intervalMs = intervalMs;
    //    m_running = true;
    //    this->start();
    //}
    //void stopAutoExport() {
    //    m_running = false;
    //    this->wait();
    //}
    void exportCsv()
    {
        //std::lock_guard<std::mutex> locker(_mutex);
        _db->exportTableToCSV(getLastProcessCsvName(), "./csv/", _mutex);
        _db->exportTableToCSV(getCurrentProcessCsvName(), "./csv/", _mutex);
        QString currentProcessCsvName = getCurrentProcessCsvName();
        if (currentProcessCsvName != currentProcessCsvNameCache)
            if (!_db->createTable(currentProcessCsvName, db_InitColumns)) {
                return;
            }
            else
                currentProcessCsvNameCache = currentProcessCsvName;
    }
};

#pragma once