/* AI Credits Balance — dashboard desktop per KDE Plasma 6. */
import QtQuick
import QtQuick.Layouts
import QtQuick.Controls as QQC2
import org.kde.plasma.plasmoid
import org.kde.plasma.core as PlasmaCore
import org.kde.plasma.components 3.0 as PC3
import org.kde.plasma.plasma5support as Plasma5Support
import org.kde.kirigami as Kirigami

PlasmoidItem {
    id: root

    property var data: null
    property string lastUpdate: ""
    property bool loading: false

    property int refreshSecs: Plasmoid.configuration.refreshIntervalSec
    property int warnThreshold: Plasmoid.configuration.warnThreshold
    property int critThreshold: Plasmoid.configuration.critThreshold
    property real dsBudget: Plasmoid.configuration.dsBudget
    property bool showDeepSeek: Plasmoid.configuration.showDeepSeek
    property bool showOpenRouter: Plasmoid.configuration.showOpenRouter

    readonly property color dsAccent: "#4f93ff"
    readonly property color orAccent: "#00bcd4"

    Plasmoid.title: i18n("AI Credits")
    Plasmoid.icon: "view-statistics"
    Plasmoid.backgroundHints: PlasmaCore.Types.DefaultBackground
    toolTipMainText: i18n("Credito AI residuo")
    toolTipSubText: root.toolTipSub()

    // Desktop-first; la vista compatta è solo fallback per pannelli.
    preferredRepresentation: fullRepresentation
    switchWidth: 150
    switchHeight: 150

    Plasma5Support.DataSource {
        id: executable
        engine: "executable"
        connectedSources: []

        onNewData: function(sourceName, data) {
            root.loading = false
            executable.disconnectSource(sourceName)
            if (data["exit code"] !== 0) {
                // lo script non fallisce quasi mai (gestione interna), ma…
                return
            }
            try {
                const result = JSON.parse((data["stdout"] || "").trim())
                if (result) {
                    root.data = result
                    root.lastUpdate = new Date().toLocaleTimeString(Qt.locale(), "HH:mm:ss")
                }
            } catch (e) {
                // ignore
            }
        }
    }

    function refresh() {
        if (root.loading) return
        root.loading = true
        const path = Qt.resolvedUrl("../scripts/balance.sh").toString().replace(/^file:\/\//, "")
        executable.connectSource("/bin/bash " + shellQuote(path))
    }
    function shellQuote(s) { return "'" + String(s).replace(/'/g, "'\"'\"'") + "'" }

    // Colore accent in base alla percentuale residua.
    function accentFor(pct, normalAccent) {
        if (isNaN(pct)) return normalAccent
        if (pct <= root.critThreshold) return Kirigami.Theme.negativeTextColor
        if (pct <= root.warnThreshold) return Kirigami.Theme.neutralTextColor
        return normalAccent
    }
    function money(v) {
        if (typeof v !== "number" || isNaN(v)) return "—"
        return "$" + v.toFixed(2)
    }
    function pctStr(pct) {
        return isNaN(pct) ? "" : Math.round(pct) + "%"
    }

    // DeepSeek
    function dsData() { return root.data && root.data.deepseek ? root.data.deepseek : null }
    function dsRemainingPct() {
        const d = dsData()
        if (!d || !d.ok || root.dsBudget <= 0) return NaN
        return Math.max(0, (d.total / root.dsBudget) * 100)
    }
    function dsProgress() {
        const d = dsData()
        if (!d || !d.ok || root.dsBudget <= 0) return NaN
        return Math.max(0, Math.min(1, d.total / root.dsBudget))
    }
    function dsRemainingText() {
        const d = dsData()
        if (!d) return "…"
        if (!d.ok) return "ERR"
        return money(d.total)
    }
    function dsAccentColor() {
        const d = dsData()
        if (!d || !d.ok) return Kirigami.Theme.negativeTextColor
        const p = dsRemainingPct()
        return isNaN(p) ? root.dsAccent : root.accentFor(p, root.dsAccent)
    }
    function dsSub() {
        const d = dsData()
        if (!d || !d.ok) return ""
        return i18n("Granted %1 · Top-up %2", money(d.granted), money(d.topped_up))
    }
    function dsFoot() {
        const d = dsData()
        if (!d || !d.ok) return ""
        const p = dsRemainingPct()
        if (isNaN(p)) return d.available ? i18n("disponibile") : i18n("NON disponibile")
        return (d.available ? i18n("disponibile · %1", pctStr(p)) : i18n("NON disponibile · %1", pctStr(p)))
    }
    function dsError() {
        const d = dsData()
        if (!d || d.ok) return ""
        const map = { "no_api_key": i18n("nessuna chiave DeepSeek"), "fetch_failed": i18n("connessione fallita"), "bad_json": i18n("risposta non valida") }
        return map[d.error] ? map[d.error] : i18n("errore")
    }

    // OpenRouter
    function orData() { return root.data && root.data.openrouter ? root.data.openrouter : null }
    function orRemaining() {
        const d = orData()
        return d && d.ok ? d.remaining : NaN
    }
    function orRemainingPct() {
        const d = orData()
        if (!d || !d.ok || !d.total_credits) return NaN
        return Math.max(0, (d.remaining / d.total_credits) * 100)
    }
    function orProgress() {
        const d = orData()
        if (!d || !d.ok || !d.total_credits) return NaN
        return Math.max(0, Math.min(1, d.remaining / d.total_credits))
    }
    function orRemainingText() {
        const d = orData()
        if (!d) return "…"
        if (!d.ok) return "ERR"
        return money(d.remaining)
    }
    function orAccentColor() {
        const d = orData()
        if (!d || !d.ok) return Kirigami.Theme.negativeTextColor
        return root.accentFor(orRemainingPct(), root.orAccent)
    }
    function orSub() {
        const d = orData()
        if (!d || !d.ok) return ""
        return i18n("Usati %1 / %2", money(d.total_usage), money(d.total_credits))
    }
    function orFoot() {
        const d = orData()
        if (!d || !d.ok) return ""
        return pctStr(orRemainingPct())
    }
    function orError() {
        const d = orData()
        if (!d || d.ok) return ""
        const map = { "no_api_key": i18n("nessuna chiave OpenRouter"), "fetch_failed": i18n("connessione fallita"), "bad_json": i18n("risposta non valida (forse serve una management key)") }
        return map[d.error] ? map[d.error] : i18n("errore")
    }

    function toolTipSub() {
        if (!root.data) return i18n("Aggiornamento…")
        const d = dsData(), o = orData()
        const ds = d && d.ok ? money(d.total) : "—"
        const ors = o && o.ok ? money(o.remaining) : "—"
        return i18n("DeepSeek %1 · OpenRouter %2", ds, ors)
    }

    Component.onCompleted: root.refresh()
    Timer {
        interval: Math.max(30, root.refreshSecs) * 1000
        repeat: true
        running: true
        onTriggered: root.refresh()
    }

    compactRepresentation: Component {
        Item {
            implicitWidth: Kirigami.Units.iconSizes.smallMedium
            implicitHeight: Kirigami.Units.iconSizes.smallMedium
            Kirigami.Icon {
                anchors.fill: parent
                source: Plasmoid.icon
                color: root.data && root.data.ok ? root.dsAccent : Kirigami.Theme.disabledTextColor
            }
            MouseArea { anchors.fill: parent; onClicked: Plasmoid.expanded = !Plasmoid.expanded }
        }
    }

    fullRepresentation: Component {
        Item {
            implicitWidth: 224
            implicitHeight: 232
            Layout.preferredWidth: 224
            Layout.preferredHeight: 232

            ColumnLayout {
                anchors.fill: parent
                anchors.margins: 8
                spacing: 5

                // Header
                RowLayout {
                    Layout.fillWidth: true
                    Kirigami.Icon {
                        source: Plasmoid.icon
                        color: root.dsAccent
                        Layout.preferredWidth: 20
                        Layout.preferredHeight: 20
                    }
                    ColumnLayout {
                        spacing: 0
                        PC3.Label {
                            text: i18n("CREDITO AI")
                            font.bold: true
                            font.pointSize: Kirigami.Theme.defaultFont.pointSize + 1
                        }
                        PC3.Label {
                            text: root.data && root.data.ok ? i18n("RESIDUO") : i18n("OFFLINE")
                            color: root.data && root.data.ok ? root.dsAccent : Kirigami.Theme.negativeTextColor
                            font.bold: true
                            font.pointSize: Kirigami.Theme.defaultFont.pointSize - 2
                        }
                    }
                    Item { Layout.fillWidth: true }
                    Rectangle {
                        Layout.preferredWidth: 9
                        Layout.preferredHeight: 9
                        radius: 5
                        color: root.data && root.data.ok ? "#7cb342" : Kirigami.Theme.negativeTextColor
                    }
                    PC3.Button {
                        icon.name: "view-refresh"
                        display: QQC2.AbstractButton.IconOnly
                        enabled: !root.loading
                        onClicked: root.refresh()
                    }
                }

                Rectangle {
                    Layout.fillWidth: true
                    Layout.preferredHeight: 1
                    color: Qt.rgba(0, 188 / 255, 212 / 255, 0.45)
                }

                CreditCard {
                    Layout.fillWidth: true
                    visible: root.showDeepSeek
                    title: i18n("DeepSeek")
                    badge: dsData() && dsData().ok ? dsData().currency : "DS"
                    accent: root.dsAccentColor()
                    remainingText: root.dsRemainingText()
                    subText: root.dsSub()
                    footText: root.dsFoot()
                    progress: root.dsProgress()
                    available: dsData() ? dsData().available : false
                    hasError: dsData() ? !dsData().ok : false
                    errorText: root.dsError()
                }

                CreditCard {
                    Layout.fillWidth: true
                    visible: root.showOpenRouter
                    title: i18n("OpenRouter")
                    badge: "USD"
                    accent: root.orAccentColor()
                    remainingText: root.orRemainingText()
                    subText: root.orSub()
                    footText: root.orFoot()
                    progress: root.orProgress()
                    available: orData() ? orData().ok : false
                    hasError: orData() ? !orData().ok : false
                    errorText: root.orError()
                }

                Item { Layout.fillHeight: true }

                // Footer sync
                RowLayout {
                    Layout.fillWidth: true
                    PC3.Label {
                        text: root.lastUpdate ? i18n("SYNC %1", root.lastUpdate) : i18n("SYNC…")
                        color: Kirigami.Theme.disabledTextColor
                        font.pointSize: Kirigami.Theme.defaultFont.pointSize - 3
                    }
                    Item { Layout.fillWidth: true }
                    PC3.Label {
                        text: root.loading ? i18n("aggiornamento…") : ""
                        color: Kirigami.Theme.disabledTextColor
                        font.pointSize: Kirigami.Theme.defaultFont.pointSize - 3
                    }
                }
            }
        }
    }
}