#include "airajson.h"

#include <QCoreApplication>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonValue>
#include <QLocale>
#include <QStringList>
#include <QUrl>

namespace AiraJson {

QString normalizeBaseUrl(const QString &raw)
{
    QString s = raw.trimmed();
    if (s.isEmpty())
        return QString();

    if (!s.startsWith(QLatin1String("http://")) && !s.startsWith(QLatin1String("https://")))
        s.prepend(QLatin1String("http://"));

    while (s.endsWith(QLatin1Char('/')))
        s.chop(1);

    return s;
}

QVariantMap parseSummary(const QByteArray &body, bool *ok)
{
    if (ok)
        *ok = false;

    QJsonParseError err;
    const QJsonDocument doc = QJsonDocument::fromJson(body, &err);
    if (err.error != QJsonParseError::NoError || !doc.isObject())
        return QVariantMap();

    const QJsonObject root = doc.object();
    if (root.value(QStringLiteral("ok")).toBool() == false)
        return QVariantMap();

    const QJsonObject summary = root.value(QStringLiteral("summary")).toObject();
    if (summary.isEmpty())
        return QVariantMap();

    if (ok)
        *ok = true;
    return summary.toVariantMap();
}

QVariantMap parseStats(const QByteArray &body, bool *ok)
{
    if (ok)
        *ok = false;

    QJsonParseError err;
    const QJsonDocument doc = QJsonDocument::fromJson(body, &err);
    if (err.error != QJsonParseError::NoError || !doc.isObject())
        return QVariantMap();

    const QJsonObject root = doc.object();
    if (root.value(QStringLiteral("ok")).toBool() == false)
        return QVariantMap();

    const QJsonObject stats = root.value(QStringLiteral("stats")).toObject();
    if (stats.isEmpty())
        return QVariantMap();

    if (ok)
        *ok = true;
    return stats.toVariantMap();
}

QString modeLabel(const QString &operatingStatus)
{
    const QString s = operatingStatus;
    if (s == QLatin1String("OPERATING_STATUS_AUTO"))
        return QCoreApplication::translate("AiraJson", "Automatic");
    if (s == QLatin1String("OPERATING_STATUS_HEATING"))
        return QCoreApplication::translate("AiraJson", "Heating");
    if (s == QLatin1String("OPERATING_STATUS_COOLING"))
        return QCoreApplication::translate("AiraJson", "Cooling");
    if (s == QLatin1String("OPERATING_STATUS_HOT_WATER"))
        return QCoreApplication::translate("AiraJson", "Hot water");
    if (s == QLatin1String("OPERATING_STATUS_STANDBY"))
        return QCoreApplication::translate("AiraJson", "Standby");
    if (s == QLatin1String("OPERATING_STATUS_OFF"))
        return QCoreApplication::translate("AiraJson", "Off");
    // Stato della pompa per zona (state.zoneN_mode).
    if (s == QLatin1String("PUMP_MODE_STATE_HEATING"))
        return QCoreApplication::translate("AiraJson", "Heating");
    if (s == QLatin1String("PUMP_MODE_STATE_COOLING"))
        return QCoreApplication::translate("AiraJson", "Cooling");
    if (s == QLatin1String("PUMP_MODE_STATE_HOT_WATER"))
        return QCoreApplication::translate("AiraJson", "Hot water");
    if (s == QLatin1String("PUMP_MODE_STATE_IDLE"))
        return QCoreApplication::translate("AiraJson", "Idle");
    if (s == QLatin1String("PUMP_MODE_STATE_STANDBY"))
        return QCoreApplication::translate("AiraJson", "Standby");
    if (s == QLatin1String("PUMP_MODE_STATE_OFF"))
        return QCoreApplication::translate("AiraJson", "Off");
    // Stato operativo della pompa (state.pump_active_state).
    if (s == QLatin1String("PUMP_ACTIVE_STATE_IDLE"))
        return QCoreApplication::translate("AiraJson", "Stopped");
    if (s == QLatin1String("PUMP_ACTIVE_STATE_RUNNING"))
        return QCoreApplication::translate("AiraJson", "Running");
    if (s.isEmpty())
        return QStringLiteral("—");
    // Sconosciuto: togliamo il prefisso e mostriamo il resto, minuscolo.
    QString rest = s;
    rest.remove(QLatin1String("OPERATING_STATUS_"));
    rest.remove(QLatin1String("PUMP_MODE_STATE_"));
    rest.remove(QLatin1String("PUMP_ACTIVE_STATE_"));
    rest.remove(QLatin1String("POWER_PREFERENCE_"));
    return rest.toLower();
}

QString formatValue(const QVariant &value)
{
    // Un decimale: e' il caso delle temperature ("51,0").
    return formatNumber(value, 1);
}

QString formatNumber(const QVariant &value, int decimals)
{
    if (!value.isValid() || value.isNull())
        return QStringLiteral("—");

    bool isNumber = false;
    const double d = value.toDouble(&isNumber);
    if (!isNumber)
        return QStringLiteral("—");

    // QLocale() = locale predefinito, che translator.cpp allinea alla lingua
    // dell'app: separatore decimale col punto in inglese, con la virgola in
    // italiano (QString::number darebbe sempre il punto).
    return QLocale().toString(d, 'f', decimals < 0 ? 0 : decimals);
}

QString formatMoney(const QVariant &value, const QString &currencyCode)
{
    if (!value.isValid() || value.isNull())
        return QStringLiteral("—");

    bool isNumber = false;
    const double d = value.toDouble(&isNumber);
    if (!isNumber)
        return QStringLiteral("—");

    // Posizione del simbolo e separatori seguono la lingua dell'app, non la
    // valuta: "21,78 €" in italiano, "€21.78" in inglese.
    const QString code = currencyCode.trimmed().toUpper();
    QString symbol;
    if (code == QLatin1String("EUR"))
        symbol = QString::fromUtf8("€");
    else if (!code.isEmpty())
        symbol = code;                       // valuta senza simbolo noto: codice ISO
    return QLocale().toCurrencyString(d, symbol);
}

QString monthLabel(const QString &yearMonth)
{
    // "2026-10" -> "ottobre 2026": il nome del mese segue la lingua dell'app.
    const QStringList parti = yearMonth.split(QLatin1Char('-'));
    if (parti.size() != 2)
        return QString();

    bool annoOk = false;
    bool meseOk = false;
    const int anno = parti.at(0).toInt(&annoOk);
    const int mese = parti.at(1).toInt(&meseOk);
    if (!annoOk || !meseOk || mese < 1 || mese > 12)
        return QString();

    return QStringLiteral("%1 %2").arg(QLocale().monthName(mese, QLocale::LongFormat)).arg(anno);
}

QByteArray commandPayload(const QString &id, const QVariant &value)
{
    QJsonObject o;
    o.insert(QStringLiteral("id"), id);
    if (value.isValid() && !value.isNull())
        o.insert(QStringLiteral("value"), QJsonValue::fromVariant(value));
    return QJsonDocument(o).toJson(QJsonDocument::Compact);
}

QString errorMessage(const QByteArray &body, int httpStatus)
{
    QJsonParseError err;
    const QJsonDocument doc = QJsonDocument::fromJson(body, &err);
    if (err.error == QJsonParseError::NoError && doc.isObject()) {
        const QString msg = doc.object().value(QStringLiteral("error")).toString();
        if (!msg.isEmpty())
            return msg;
    }
    if (httpStatus == 0)
        return QCoreApplication::translate("AiraJson", "server unreachable");
    return QCoreApplication::translate("AiraJson", "HTTP error %1").arg(httpStatus);
}

} // namespace AiraJson