// A tiny bar chart: magnitude over time, one hue, baseline at zero.
//
// The ramp step says "did this day clear the goal" without adding a second
// colour, and every bar carries its own tooltip, so no bar needs a label.
import QtQuick
import QtQuick.Controls.Material
import QtQuick.Layouts

Item {
    id: chart
    property var days: []           // [{date, pomodoros, focus_minutes, goal_met}]
    property int goal: 8
    property int barHeight: 110

    implicitHeight: barHeight + 18

    readonly property int maxValue: {
        var top = goal
        for (var i = 0; i < days.length; i++) top = Math.max(top, days[i].pomodoros)
        return Math.max(top, 1)
    }

    Rectangle {
        anchors.left: parent.left
        anchors.right: parent.right
        y: chart.barHeight - (chart.goal / chart.maxValue) * chart.barHeight
        height: 1
        color: Material.hintTextColor
        opacity: 0.45
        visible: chart.goal > 0
    }

    RowLayout {
        anchors.left: parent.left
        anchors.right: parent.right
        height: chart.barHeight
        spacing: 2

        Repeater {
            model: chart.days
            delegate: Item {
                required property var modelData
                Layout.fillWidth: true
                Layout.fillHeight: true

                Rectangle {
                    anchors.bottom: parent.bottom
                    width: parent.width
                    height: Math.max(modelData.pomodoros > 0
                                     ? (modelData.pomodoros / chart.maxValue) * chart.barHeight : 2, 2)
                    radius: 4
                    color: modelData.pomodoros === 0 ? Material.dividerColor
                                                     : (modelData.goal_met ? "#256abf" : "#6da7ec")

                    ToolTip.visible: hover.hovered
                    ToolTip.text: modelData.date + ": " + modelData.pomodoros
                                  + " pomodoros · " + modelData.focus_minutes + " min"
                    HoverHandler { id: hover }
                    Behavior on height { NumberAnimation { duration: 250 } }
                }
            }
        }
    }

    RowLayout {
        anchors.bottom: parent.bottom
        anchors.left: parent.left
        anchors.right: parent.right
        Label {
            text: chart.days.length ? chart.days[0].date.substring(5) : ""
            font.pixelSize: 10; opacity: 0.6
        }
        Item { Layout.fillWidth: true }
        Label {
            text: chart.days.length ? chart.days[chart.days.length - 1].date.substring(5) : ""
            font.pixelSize: 10; opacity: 0.6
        }
    }
}