import Quickshell
import Quickshell.Services.UPower
import Quickshell.Services.Mpris
import QtQuick
import Qt5Compat.GraphicalEffects

// Shared appearance; authentication belongs to the greeter or session lock.
Item {
    id: view
    required property var theme
    property bool busy: false
    property string errorMessage: ""
    signal submitted(string password)

    Image {
        id: wall
        anchors.fill: parent
        source: "file://" + view.theme.wallImage
        // cache:false — soft reload (qs ipc reload) keeps the process
        // alive, and the QML pixmap cache is keyed by URL, so a new
        // wallpaper behind the same path never shows without this.
        cache: false
        fillMode: Image.PreserveAspectCrop
        visible: false
    }
    FastBlur {
        anchors.fill: wall
        source: wall
        radius: 20
    }
    // Lighter blur means less natural contrast, so the scrim
    // is a left-weighted gradient instead of a flat 0.4 wash:
    // dark under the text column, near-clear on the right.
    Rectangle {
        anchors.fill: parent
        gradient: Gradient {
            orientation: Gradient.Horizontal
            GradientStop { position: 0.0; color: "#b0000000" }
            GradientStop { position: 0.55; color: "#59000000" }
            GradientStop { position: 1.0; color: "#33000000" }
        }
    }

    SystemClock {
        id: lockClock
        precision: SystemClock.Seconds
    }

    // Lower-left, not centred: clock/date/password stack left
    // aligned against a 10% margin, sitting below the middle.
    Column {
        anchors.left: parent.left
        anchors.leftMargin: Math.round(parent.width * 0.10)
        anchors.verticalCenter: parent.verticalCenter
        anchors.verticalCenterOffset: Math.round(parent.height * 0.14)
        spacing: 6

        Text {
            text: lockClock.date.toLocaleTimeString(Qt.locale(), "HH:mm")
            color: view.theme.base05
            font.family: view.theme.fontFamily
            font.pixelSize: 104
            font.weight: Font.DemiBold
        }
        Text {
            text: lockClock.date.toLocaleDateString(Qt.locale(), "dddd, d MMMM")
            color: view.theme.base04
            font.family: view.theme.fontFamily
            font.pixelSize: 18
        }

        Item { width: 1; height: 14 }

        // Power. UPower.displayDevice is the same DBus source
        // the bar reads — no polling, no /sys parsing.
        Row {
            id: lockBatt
            spacing: 8
            property var dev: UPower.displayDevice
            property int level: dev && dev.ready ? Math.round(dev.percentage * 100) : 0
            property bool charging: dev ? dev.state === UPowerDeviceState.Charging : false
            property string remaining: {
                if (!dev) return "";
                let secs = charging ? dev.timeToFull : dev.timeToEmpty;
                if (!secs || secs <= 0) return "";
                return Math.floor(secs / 3600) + "h " + Math.round((secs % 3600) / 60) + "m";
            }
            visible: dev && dev.ready

            Text {
                anchors.verticalCenter: parent.verticalCenter
                text: lockBatt.charging ? "battery-charging"
                    : lockBatt.level >= 75 ? "battery-full"
                    : lockBatt.level >= 50 ? "battery-medium"
                    : lockBatt.level >= 20 ? "battery-low"
                    : "battery"
                font.family: view.theme.iconFont
                font.pixelSize: 17
                color: lockBatt.level <= 15 ? view.theme.err
                     : lockBatt.level <= 30 ? view.theme.warn : view.theme.base04
            }
            Text {
                anchors.verticalCenter: parent.verticalCenter
                text: lockBatt.level + "%" + (lockBatt.remaining === "" ? ""
                    : "  ·  " + lockBatt.remaining + (lockBatt.charging ? " to full" : " left"))
                color: view.theme.base04
                font.family: view.theme.fontFamily
                font.pixelSize: 15
            }
        }

        // Now playing. Mpris is a global service, so this shows
        // whatever kept playing into the lock — nothing is woken.
        Row {
            id: lockMedia
            spacing: 8
            property var player: Mpris.players.values.filter(p => p.trackTitle)[0]
            visible: !!player

            Text {
                anchors.verticalCenter: parent.verticalCenter
                text: "music"
                font.family: view.theme.iconFont
                font.pixelSize: 17
                color: view.theme.base04
            }
            Text {
                anchors.verticalCenter: parent.verticalCenter
                width: 380
                elide: Text.ElideRight
                text: lockMedia.player
                    ? lockMedia.player.trackTitle + (lockMedia.player.trackArtist
                        ? "  ·  " + lockMedia.player.trackArtist : "")
                    : ""
                color: view.theme.base04
                font.family: view.theme.fontFamily
                font.pixelSize: 15
            }
        }

        Item { width: 1; height: 14 }


        // Password pill: dots for typed chars; border tracks
        // state (accent while checking, red on failure).
        Rectangle {
            width: 300
            height: 46
            radius: view.theme.radiusCard
            color: view.theme.cardBg
            border.width: view.theme.borderWidth
            border.color: view.busy ? view.theme.accent
                : (view.errorMessage !== "") ? view.theme.err
                : view.theme.base03
            Behavior on border.color { ColorAnimation { duration: view.theme.animFade } }

            Row {
                anchors.centerIn: parent
                spacing: 8
                Repeater {
                    model: Math.min(pwInput.text.length, 24)
                    Rectangle {
                        width: 8; height: 8; radius: 4
                        color: view.theme.base05
                    }
                }
            }

            Text {
                anchors.centerIn: parent
                visible: pwInput.text === "" && (view.errorMessage !== "")
                text: view.errorMessage
                color: view.theme.err
                font.family: view.theme.fontFamily
                font.pixelSize: 13
            }

            TextInput {
                id: pwInput
                anchors.fill: parent
                opacity: 0
                enabled: !view.busy
                echoMode: TextInput.Password
                focus: true
                function go() {
                    view.submitted(text);
                    text = "";
                }
                // Explicit key handlers: accepted() doesn't
                // fire reliably on the lock surface.
                Keys.onReturnPressed: go()
                Keys.onEnterPressed: go()
                onAccepted: go()
                Keys.onEscapePressed: text = ""
            }

            // Visible confirm button (after TextInput: on top)
            Rectangle {
                anchors.right: parent.right
                anchors.rightMargin: 6
                anchors.verticalCenter: parent.verticalCenter
                width: 32; height: 32; radius: 16
                color: confirmMa.containsMouse ? view.theme.base02 : "transparent"
                Behavior on color { ColorAnimation { duration: view.theme.animFade } }
                visible: pwInput.text.length > 0

                Text {
                    anchors.centerIn: parent
                    text: "arrow-right"
                    font.family: view.theme.iconFont
                    font.pixelSize: 18
                    color: view.theme.accent
                }
                MouseArea {
                    id: confirmMa
                    anchors.fill: parent
                    hoverEnabled: true
                    cursorShape: Qt.PointingHandCursor
                    onClicked: pwInput.go()
                }
            }
        }
    }

    Component.onCompleted: pwInput.forceActiveFocus()
}