// NewSessionDialog.qml — Dialog for creating or editing a session
import QtQuick 2.15
import QtQuick.Controls 2.15
import QtQuick.Layouts 1.15

Dialog {
    id: root
    title: editMode ? "Session Settings" : "New Session"
    width: 520
    modal: false
    x: (parent ? (parent.width - width) / 2 : 0)
    y: (parent ? (parent.height - height) / 2 : 0)
    property bool dragging: false

    // Mode: false = create, true = edit existing session
    property bool editMode: false
    property string editSessionName: ""

    // Keep the non-modal dialog visually separate from the application behind it.
    background: Item {
        // A dark offset layer reads as a shadow instead of a bright outline.
        Rectangle {
            x: 4
            y: 6
            width: parent.width
            height: parent.height
            color: Qt.rgba(0, 0, 0, 0.28)
            radius: 4
        }
        Rectangle {
            anchors.fill: parent
            color: theme.windowColor
            border.color: theme.dialogOutlineColor
            border.width: 3
            radius: 4

            Rectangle {
                anchors.fill: parent
                anchors.margins: 3
                color: "transparent"
                border.color: theme.lightColor
                border.width: 1
                radius: 3
            }
        }
    }

    header: Rectangle {
        implicitHeight: 36
        color: theme.buttonColor
        Text {
            anchors.centerIn: parent
            text: root.title
            color: theme.buttonTextColor
        }
        MouseArea {
            anchors.fill: parent
            cursorShape: Qt.SizeAllCursor
            property point pressPosition
            onPressed: pressPosition = Qt.point(mouse.x, mouse.y)
            onPositionChanged: if (pressed) {
                root.x += mouse.x - pressPosition.x
                root.y += mouse.y - pressPosition.y
            }
        }
    }

    signal sessionCreated()

    // Open in edit mode for a given session.
    function openForSession(sessionName) {
        editMode = true
        editSessionName = sessionName
        open()
    }

    contentItem: ColumnLayout {
        spacing: 16
        Layout.margins: 16

        Label {
            id: errorLabel
            Layout.fillWidth: true
            visible: text !== ""
            color: "red"
            wrapMode: Text.Wrap
        }

        RowLayout {
            Layout.fillWidth: true
            Label { text: "Name:"; Layout.preferredWidth: 80 }
            TextField {
                id: nameField
                Layout.fillWidth: true
                placeholderText: "(auto-generated)"
                enabled: !root.editMode
            }
        }

        RowLayout {
            Layout.fillWidth: true
            Label { text: "Directory:"; Layout.preferredWidth: 80 }
            TextField {
                id: cwdField
                Layout.fillWidth: true
                placeholderText: "/path/to/project"
            }
            Button {
                text: "Browse..."
                onClicked: {
                    var folder = theme.chooseFolder("Select Working Directory", cwdField.text || "")
                    if (folder !== "")
                        cwdField.text = folder
                }
            }
        }

        RowLayout {
            Layout.fillWidth: true
            Label { text: "Remote:"; Layout.preferredWidth: 80 }
            TextField {
                id: remoteField
                Layout.fillWidth: true
                placeholderText: "user@host (optional)"
                enabled: !root.editMode
            }
        }

        RowLayout {
            Layout.fillWidth: true
            Label { text: "Workflow:"; Layout.preferredWidth: 80 }
            ComboBox {
                id: workflowCombo
                Layout.fillWidth: true
                enabled: ollie.workflowsLoaded
                model: ollie.availableWorkflows
                currentIndex: {
                    var idx = ollie.availableWorkflows.indexOf("none")
                    return idx >= 0 ? idx : 0
                }
                onCurrentTextChanged: {
                    variantCombo.model = ollie.variantsForWorkflow(currentText)
                    variantCombo.currentIndex = 0
                }
            }
        }

        RowLayout {
            Layout.fillWidth: true
            Label { text: "Variant:"; Layout.preferredWidth: 80 }
            ComboBox {
                id: variantCombo
                Layout.fillWidth: true
                enabled: ollie.workflowsLoaded
                model: ollie.variantsForWorkflow(workflowCombo.currentText)
            }
        }

        RowLayout {
            Layout.fillWidth: true
            visible: !root.editMode
            CheckBox {
                id: yoloCheckBox
                text: "YOLO (DANGEROUS: disables\ntool sandboxing)"
                Layout.fillWidth: true
            }
        }

        Component.onCompleted: {
            if (!ollie.workflowsLoaded) ollie.loadWorkflows()
        }
    }

    footer: RowLayout {
        Layout.fillWidth: true
        Item { Layout.fillWidth: true }
        Button {
            id: okButton
            text: root.editMode ? "Save" : "OK"
            onClicked: {
                errorLabel.text = ""
                if (root.editMode) {
                    // Edit mode: write changed values back.
                    var cfg = root._originalConfig
                    var newCwd = cwdField.text.trim()
                    var newWorkflow = workflowCombo.currentText
                    var newVariant = variantCombo.currentText

                    if (newCwd !== cfg.cwd && newCwd !== "") {
                        var err = ollie.updateSessionConfig(root.editSessionName, "cwd", newCwd)
                        if (err) { errorLabel.text = err; return }
                    }
                    if (newWorkflow !== cfg.workflow) {
                        var err2 = ollie.updateSessionConfig(root.editSessionName, "workflow", newWorkflow)
                        if (err2) { errorLabel.text = err2; return }
                    }
                    if (newVariant !== cfg.variant) {
                        var varVal = newVariant === "default" ? "" : newVariant
                        var err3 = ollie.updateSessionConfig(root.editSessionName, "variant", varVal)
                        if (err3) { errorLabel.text = err3; return }
                    }
                    root.close()
                } else {
                    // Create mode.
                    var name = nameField.text.trim()
                    var remote = remoteField.text.trim()
                    var cwd = cwdField.text.trim()
                    var workflow = workflowCombo.currentText
                    var variant = variantCombo.currentText
                    var err4 = ollie.createSession(name, remote, cwd, workflow, variant, yoloCheckBox.checked)
                    if (err4 === "") {
                        ollie.refreshSessions()
                        root.sessionCreated()
                        root.close()
                    } else {
                        errorLabel.text = err4
                    }
                }
            }
        }
        Button {
            text: "Cancel"
            onClicked: root.close()
        }
    }

    // Do not request keyboard focus while opening. Clicking a field still focuses it.
    focus: false

    // Store original config when opened in edit mode for diffing on save.
    property var _originalConfig: ({})

    onOpened: {
        errorLabel.text = ""
        if (!ollie.workflowsLoaded) ollie.loadWorkflows()

        if (editMode && editSessionName !== "") {
            // Read current session config and populate fields.
            var cfg = ollie.readSessionConfig(editSessionName)
            _originalConfig = cfg
            nameField.text = cfg.name || editSessionName
            cwdField.text = cfg.cwd || ""
            remoteField.text = cfg.remote || ""

            var wfIdx = ollie.availableWorkflows.indexOf(cfg.workflow || "none")
            workflowCombo.currentIndex = wfIdx >= 0 ? wfIdx : 0

            // Populate variant after workflow is set.
            var variants = ollie.variantsForWorkflow(workflowCombo.currentText)
            variantCombo.model = variants
            var vIdx = variants.indexOf(cfg.variant || "default")
            variantCombo.currentIndex = vIdx >= 0 ? vIdx : 0

            yoloCheckBox.checked = cfg.yolo === "true"
        } else {
            // Create mode: reset all fields.
            editMode = false
            editSessionName = ""
            _originalConfig = {}
            nameField.text = ""
            cwdField.text = ""
            remoteField.text = ""
            yoloCheckBox.checked = false
            var idx = ollie.availableWorkflows.indexOf("none")
            workflowCombo.currentIndex = idx >= 0 ? idx : 0
            variantCombo.currentIndex = 0
        }
    }
}