// Main.qml — Demo app for testing BobinkClient connection flow.

import QtQuick
import QtQuick.Controls
import QtQuick.Layouts
import QtQuick.Dialogs
import Bobink

ApplicationWindow {
    id: root
    width: 800
    height: 900
    visible: true
    title: "Bobink Demo"

    property bool autoConnectFailed: false
    property bool showPkiSettings: false

    Component.onCompleted: {
        BobinkClient.discoveryUrl = discoveryUrlField.text;
        BobinkClient.startDiscovery();
    }

    Connections {
        target: BobinkClient
        function onServersChanged() {
            debugConsole.appendLog("Discovered server list updated");
        }
        function onConnectedChanged() {
            debugConsole.appendLog("Connected: " + BobinkClient.connected);
            if (BobinkClient.connected)
                root.autoConnectFailed = false;
        }
        function onConnectionError(message) {
            debugConsole.appendLog("ERROR: " + message);
            root.autoConnectFailed = true;
        }
        function onStatusMessage(message) {
            debugConsole.appendLog(message);
        }
        function onDiscoveringChanged() {
            debugConsole.appendLog("Discovering: " + BobinkClient.discovering);
        }
        function onCertificateTrustRequested(certInfo) {
            certTrustDialog.certInfo = certInfo;
            certTrustDialog.open();
        }
    }

    Dialog {
        id: certTrustDialog
        property string certInfo
        anchors.centerIn: parent
        title: "Certificate Trust"
        modal: true
        standardButtons: Dialog.Yes | Dialog.No
        Label {
            text: certTrustDialog.certInfo
        }
        onAccepted: BobinkClient.acceptCertificate()
        onRejected: BobinkClient.rejectCertificate()
    }

    ColumnLayout {
        anchors.fill: parent
        anchors.margins: 20
        spacing: 12

        Label {
            text: "Discovery URL"
            font.bold: true
        }

        RowLayout {
            TextField {
                id: discoveryUrlField
                Layout.fillWidth: true
                text: "opc.tcp://localhost:4840"
            }
            Button {
                text: BobinkClient.discovering ? "Stop" : "Discover"
                onClicked: {
                    if (BobinkClient.discovering) {
                        BobinkClient.stopDiscovery();
                    } else {
                        BobinkClient.discoveryUrl = discoveryUrlField.text;
                        BobinkClient.startDiscovery();
                    }
                }
            }
        }

        Label {
            text: BobinkClient.discovering ? "Discovering... (" + BobinkClient.servers.length + " found)" : BobinkClient.servers.length + " server(s)"
            font.italic: true
        }

        ListView {
            Layout.fillWidth: true
            Layout.preferredHeight: 100
            clip: true
            model: BobinkClient.servers
            delegate: ItemDelegate {
                required property var modelData
                width: ListView.view.width
                text: modelData.serverName + "  —  " + modelData.applicationUri
                onClicked: {
                    if (modelData.discoveryUrls.length > 0)
                        serverUrlField.text = modelData.discoveryUrls[0];
                }
            }
            ScrollBar.vertical: ScrollBar {}
        }

        RowLayout {
            Label {
                text: "PKI"
                font.bold: true
            }
            Label {
                text: BobinkClient.certFile ? "  (" + BobinkClient.certFile.split("/").pop() + ")" : "  (no certificate found)"
                font.italic: true
                color: BobinkClient.certFile ? "green" : "gray"
            }
            Item {
                Layout.fillWidth: true
            }
            Button {
                text: root.showPkiSettings ? "Hide" : "Configure..."
                flat: true
                onClicked: root.showPkiSettings = !root.showPkiSettings
            }
        }

        FileDialog {
            id: certFileDialog
            title: "Select Certificate"
            currentFolder: "file://" + trustFolderField.text
            nameFilters: ["DER certificates (*.der)", "All files (*)"]
            onAccepted: certFileField.text = selectedFile.toString().replace("file://", "")
        }

        FileDialog {
            id: keyFileDialog
            title: "Select Private Key"
            currentFolder: "file://" + trustFolderField.text
            nameFilters: ["Key files (*.pem *.crt)", "All files (*)"]
            onAccepted: keyFileField.text = selectedFile.toString().replace("file://", "")
        }

        FolderDialog {
            id: trustFolderDialog
            title: "Select Trust Folder"
            currentFolder: "file://" + trustFolderField.text
            onAccepted: trustFolderField.text = selectedFolder.toString().replace("file://", "")
        }

        GridLayout {
            columns: 3
            Layout.fillWidth: true
            visible: root.showPkiSettings

            Label {
                text: "Certificate:"
            }
            TextField {
                id: certFileField
                Layout.fillWidth: true
                text: BobinkClient.certFile
                placeholderText: "Client certificate (.der)"
            }
            Button {
                text: "Browse..."
                onClicked: certFileDialog.open()
            }

            Label {
                text: "Private key:"
            }
            TextField {
                id: keyFileField
                Layout.fillWidth: true
                text: BobinkClient.keyFile
                placeholderText: "Private key (.pem, .crt)"
            }
            Button {
                text: "Browse..."
                onClicked: keyFileDialog.open()
            }

            Label {
                text: "Trust folder:"
            }
            TextField {
                id: trustFolderField
                Layout.fillWidth: true
                text: BobinkClient.pkiDir
            }
            Button {
                text: "Browse..."
                onClicked: trustFolderDialog.open()
            }
        }

        Button {
            text: "Apply PKI"
            Layout.fillWidth: true
            visible: root.showPkiSettings
            onClicked: {
                BobinkClient.pkiDir = trustFolderField.text;
                BobinkClient.certFile = certFileField.text;
                BobinkClient.keyFile = keyFileField.text;
                BobinkClient.applyPki();
            }
        }

        Label {
            text: "Server URL"
            font.bold: true
        }

        TextField {
            id: serverUrlField
            Layout.fillWidth: true
            placeholderText: "opc.tcp://..."
        }

        Label {
            text: "Authentication"
            font.bold: true
        }

        BobinkAuth {
            id: auth
            mode: authModeCombo.currentValue
            username: usernameField.text
            password: passwordField.text
            certPath: BobinkClient.certFile
            keyPath: BobinkClient.keyFile
        }

        ComboBox {
            id: authModeCombo
            Layout.fillWidth: true
            textRole: "text"
            valueRole: "mode"
            model: [
                {
                    text: "Anonymous",
                    mode: BobinkAuth.Anonymous
                },
                {
                    text: "Username / Password",
                    mode: BobinkAuth.UserPass
                },
                {
                    text: "Certificate",
                    mode: BobinkAuth.Certificate
                }
            ]
        }

        GridLayout {
            columns: 2
            visible: authModeCombo.currentValue === BobinkAuth.UserPass
            Layout.fillWidth: true

            Label {
                text: "Username:"
            }
            TextField {
                id: usernameField
                Layout.fillWidth: true
            }
            Label {
                text: "Password:"
            }
            TextField {
                id: passwordField
                Layout.fillWidth: true
                echoMode: TextInput.Password
            }
        }

        Button {
            text: BobinkClient.connected ? "Disconnect" : "Connect"
            Layout.fillWidth: true
            onClicked: {
                if (BobinkClient.connected) {
                    BobinkClient.disconnectFromServer();
                } else {
                    root.autoConnectFailed = false;
                    BobinkClient.auth = auth;
                    BobinkClient.serverUrl = serverUrlField.text;
                    BobinkClient.connectToServer();
                }
            }
        }

        Label {
            text: "Direct Connect"
            font.bold: true
            visible: root.autoConnectFailed && !BobinkClient.connected
        }

        GridLayout {
            columns: 2
            Layout.fillWidth: true
            visible: root.autoConnectFailed && !BobinkClient.connected

            Label {
                text: "Security policy:"
            }
            ComboBox {
                id: securityPolicyCombo
                Layout.fillWidth: true
                textRole: "text"
                valueRole: "policy"
                model: [
                    {
                        text: "Basic256Sha256",
                        policy: BobinkClient.Basic256Sha256
                    },
                    {
                        text: "Aes128-Sha256-RsaOaep",
                        policy: BobinkClient.Aes128_Sha256_RsaOaep
                    },
                    {
                        text: "Aes256-Sha256-RsaPss",
                        policy: BobinkClient.Aes256_Sha256_RsaPss
                    }
                ]
            }

            Label {
                text: "Security mode:"
            }
            ComboBox {
                id: securityModeCombo
                Layout.fillWidth: true
                textRole: "text"
                valueRole: "mode"
                model: [
                    {
                        text: "Sign & Encrypt",
                        mode: BobinkClient.SignAndEncrypt
                    },
                    {
                        text: "Sign",
                        mode: BobinkClient.Sign
                    },
                    {
                        text: "None",
                        mode: BobinkClient.None
                    }
                ]
            }
        }

        Button {
            text: "Direct Connect"
            Layout.fillWidth: true
            visible: root.autoConnectFailed && !BobinkClient.connected
            onClicked: {
                BobinkClient.auth = auth;
                BobinkClient.serverUrl = serverUrlField.text;
                BobinkClient.connectDirect(securityPolicyCombo.currentValue, securityModeCombo.currentValue);
            }
        }

        Label {
            text: "Status: " + (BobinkClient.connected ? "Connected" : "Disconnected")
            color: BobinkClient.connected ? "green" : "red"
        }

        Item {
            Layout.fillHeight: true
        }

        Rectangle {
            id: debugConsole
            Layout.fillWidth: true
            Layout.preferredHeight: 100
            color: "#1e1e1e"
            border.color: "#444"
            radius: 4

            function appendLog(msg) {
                let ts = new Date().toLocaleTimeString(Qt.locale(), "HH:mm:ss");
                statusLog.text += "[" + ts + "] " + msg + "\n";
                statusLog.cursorPosition = statusLog.text.length;
            }

            ScrollView {
                anchors.fill: parent
                anchors.margins: 4

                TextArea {
                    id: statusLog
                    readOnly: true
                    color: "#cccccc"
                    font.family: "monospace"
                    font.pointSize: 9
                    wrapMode: TextEdit.Wrap
                    background: null
                }
            }
        }
    }

}