import { ScrollView } from "std-widgets.slint";
import { CompactButton, DialogSurface, IconButton, FontAwesomeIcons } from "common.slint";

export struct AnnouncementItem {
    id: string,
    revision: string,
    title: string,
    date: string,
    read: bool,
}

export global MessageStrings {
    in-out property <string> messages: "Messages";
    in-out property <string> unread: "Unread";
    in-out property <string> read: "Read";
    in-out property <string> empty: "No announcements";
    in-out property <string> select-message: "Select an announcement to read";
    in-out property <string> loading: "Loading…";
    in-out property <string> read-save-error: "Unable to save reading status locally. Open the announcement again to retry.";
    in-out property <string> close: "Close";
    in-out property <string> delete-message: "Delete";
    in-out property <string> delete-title: "Delete announcement";
    in-out property <string> delete-confirmation: "Delete this announcement?";
    in-out property <string> delete-error: "Unable to delete this announcement. Please try again.";
    in-out property <string> cancel: "Cancel";
}

export component MessagePanel inherits DialogSurface {
    in property <[AnnouncementItem]> items;
    in property <int> unread-count;
    in property <int> total;
    in property <bool> loading;
    in property <bool> failed;
    in property <bool> read-save-failed;
    in property <bool> delete-failed;
    in property <bool> loaded;
    in property <bool> connected;
    in property <string> selected-id;
    in property <string> selected-title;
    in property <styled-text> selected-body;
    in property <string> selected-date;
    in property <bool> selected-read;
    callback open-message(string, string);
    callback open-link(string);
    callback delete-message(string, string);
    callback load-more;
    callback close;
    private property <string> notice-text: root.delete-failed ? MessageStrings.delete-error
        : root.read-save-failed ? MessageStrings.read-save-error : "";
    private property <length> content-top: root.notice-text == "" ? 42px : 78px;
    private property <string> pending-delete-id;
    private property <string> pending-delete-revision;
    function request-delete(id: string, revision: string) {
        root.pending-delete-id = id;
        root.pending-delete-revision = revision;
        confirmation-keys.focus();
    }
    confirmation-keys := FocusScope {
        width: 0px; height: 0px;
        key-pressed(event) => {
            if event.text == Key.Escape {
                if root.pending-delete-id != "" { root.pending-delete-id = ""; }
                else { root.close(); }
                return accept;
            }
            return reject;
        }
    }
    background: #f7f8fa;
    TouchArea { }
    Rectangle {
        x: 1px; y: 1px; width: parent.width - 2px; height: 30px;
        background: #e7ebf0; border-radius: 7px;
        Rectangle { y: parent.height - 7px; height: 7px; background: #e7ebf0; }
        message-heading := Text {
            x: 12px; width: parent.width - 100px; height: parent.height;
            text: MessageStrings.messages;
            font-size: 14px; font-weight: 400; color: #111827;
            vertical-alignment: center; overflow: elide;
        }
        if root.unread-count > 0: Rectangle {
            x: message-heading.x + message-heading.preferred-width + 8px;
            y: 5px; height: 20px;
            width: max(20px, unread-count-label.preferred-width + 12px);
            border-radius: 10px; background: #dbeafe;
            accessible-role: text;
            accessible-label: MessageStrings.unread + " " + root.unread-count;
            unread-count-label := Text {
                text: "" + root.unread-count; color: #1d4ed8;
                font-size: 12px; font-weight: 600;
                horizontal-alignment: center; vertical-alignment: center;
                accessible-role: none;
            }
        }
        if root.loading: Text {
            x: parent.width - 150px; width: 110px; height: parent.height;
            text: MessageStrings.loading; color: #4b5563; font-size: 12px;
            horizontal-alignment: right; vertical-alignment: center;
        }
        Rectangle {
            x: parent.width - 31px; y: 3px; width: 25px; height: 24px;
            border-radius: 3px;
            background: close-touch.has-hover ? #d8dde5 : transparent;
            accessible-role: button;
            accessible-label: MessageStrings.close;
            accessible-action-default => { root.close(); }
            Text { text: "×"; font-size: 20px; color: #4a5568; horizontal-alignment: center; vertical-alignment: center; }
            close-touch := TouchArea { mouse-cursor: pointer; clicked => { root.close(); } }
        }
    }
    if root.notice-text != "": Rectangle {
        x: 12px; y: 40px; width: parent.width - 24px; height: 28px;
        border-radius: 4px;
        background: #fef2f2;
        Text {
            x: 8px; width: parent.width - 16px; height: parent.height;
            text: root.notice-text; font-size: 12px; overflow: elide;
            color: #b42318;
            vertical-alignment: center;
        }
    }
    Rectangle {
        x: 12px; y: root.content-top; width: 180px; height: parent.height - self.y - 12px;
        background: white; border-width: 1px; border-color: #e2e5e9;
        announcements-scroll := ScrollView {
            width: parent.width; height: parent.height;
            VerticalLayout {
                width: 160px; spacing: 3px; padding: 5px;
                for item in root.items: Rectangle {
                    height: 56px; width: 150px;
                    background: root.selected-id == item.id ? #eaf2ff : entry-touch.has-hover ? #f1f5fa : white;
                    border-radius: 4px;
                    Text { x: 8px; y: 5px; width: parent.width - 28px; height: 22px; text: item.title; overflow: elide; font-size: 14px; font-weight: item.read ? 400 : 600; color: item.read ? #374151 : #111827; vertical-alignment: center; }
                    if !item.read: Rectangle {
                        x: parent.width - 18px; y: 13px; width: 6px; height: 6px;
                        border-radius: 3px; background: #2563eb;
                        accessible-role: none;
                    }
                    Text { x: 8px; y: 32px; width: parent.width - 42px; text: item.date; color: #4b5563; font-size: 12px; overflow: elide; }
                    accessible-role: button;
                    accessible-label: item.title + " " + (item.read ? MessageStrings.read : MessageStrings.unread);
                    accessible-action-default => { root.open-message(item.id, item.revision); }
                    entry-touch := TouchArea { mouse-cursor: pointer; clicked => { root.open-message(item.id, item.revision); } }
                    IconButton {
                        x: parent.width - 25px; y: 29px; width: 20px; height: 20px;
                        icon: FontAwesomeIcons.xmark; icon-size: 12px;
                        icon-color: #667085; danger: true;
                        accessible-role: button;
                        accessible-label: MessageStrings.delete-message + " " + item.title;
                        accessible-action-default => { root.request-delete(item.id, item.revision); }
                        clicked => { root.request-delete(item.id, item.revision); }
                    }
                }
            }
        }
        if root.items.length == 0 && root.total == 0 && root.loaded && root.connected && !root.loading && !root.failed: Text { x: 8px; width: parent.width - 16px; text: MessageStrings.empty; wrap: word-wrap; color: #4b5563; font-size: 14px; horizontal-alignment: center; vertical-alignment: center; }
    }
    Rectangle {
        x: 202px; y: root.content-top; width: parent.width - 214px; height: parent.height - self.y - 12px;
        background: white; border-width: 1px; border-color: #e2e5e9;
        if root.selected-id == "" && root.items.length > 0: Text { x: 14px; width: parent.width - 28px; text: MessageStrings.select-message; color: #4b5563; font-size: 14px; wrap: word-wrap; horizontal-alignment: center; vertical-alignment: center; }
        if root.selected-id != "": ScrollView {
            width: parent.width; height: parent.height;
            VerticalLayout {
                width: root.width - 234px; padding: 12px; spacing: 10px; alignment: start;
                Text { vertical-stretch: 0; text: root.selected-title; wrap: word-wrap; font-size: 16px; font-weight: 600; color: #202124; }
                Text { vertical-stretch: 0; text: root.selected-date; accessible-label: root.selected-date + " · " + (root.selected-read ? MessageStrings.read : MessageStrings.unread); color: #4b5563; font-size: 12px; wrap: word-wrap; }
                StyledText {
                    vertical-stretch: 0;
                    text: root.selected-body;
                    default-color: #202124; default-font-size: 14px;
                    link-color: #2563eb;
                    link-clicked(url) => { root.open-link(url); }
                }
            }
        }
    }
    Timer {
        interval: 100ms;
        running: root.connected && !root.loading && !root.failed
            && root.pending-delete-id == "" && root.items.length > 0
            && root.items.length < root.total && announcements-scroll.viewport-height > 0px
            && announcements-scroll.viewport-height + announcements-scroll.viewport-y <= announcements-scroll.height + 80px;
        triggered => { root.load-more(); }
    }
    if root.pending-delete-id != "": Rectangle {
        background: #00000042; border-radius: 8px; z: 30;
        TouchArea { clicked => { confirmation-keys.focus(); } }
        DialogSurface {
            x: (parent.width - self.width) / 2;
            y: (parent.height - self.height) / 2;
            width: 230px; height: confirmation-content.preferred-height;
            TouchArea { clicked => { confirmation-keys.focus(); } }
            confirmation-content := VerticalLayout {
                padding: 16px;
                padding-top: 26px;
                padding-bottom: 26px;
                spacing: 20px;
                Text { text: MessageStrings.delete-confirmation; font-size: 14px; color: #202124; wrap: word-wrap; horizontal-alignment: center; }
                HorizontalLayout {
                    alignment: center; spacing: 8px;
                    cancel-delete-button := CompactButton {
                        width: 72px; text-size: 13px; text: MessageStrings.cancel;
                        accessible-role: button; accessible-label: MessageStrings.cancel;
                        accessible-action-default => { cancel-delete-button.clicked(); }
                        clicked => { root.pending-delete-id = ""; }
                    }
                    confirm-delete-button := CompactButton {
                        width: 72px; text-size: 13px; text: MessageStrings.delete-message; primary: true;
                        accessible-role: button; accessible-label: MessageStrings.delete-title;
                        accessible-action-default => { confirm-delete-button.clicked(); }
                        clicked => {
                            root.delete-message(root.pending-delete-id, root.pending-delete-revision);
                            root.pending-delete-id = "";
                        }
                    }
                }
            }
        }
    }
}