// Main window + sidebar (AGENTS.md §6, §7).
//
// Phase 2 C3 wires the Settings page, About dialog, and window-state
// persistence. The Appearance section in `settings-page.slint` is the only
// settings UI that drives real state today — every other control is a
// shell that Phase 5 hooks to `AppConfig`.

import { AppearanceMode } from "./theme.slint";
import { NavItem, SectionLabel } from "./components.slint";
import { MessageItem } from "./message-card.slint";
import { MessageList } from "./message-list.slint";
import { EmptyState } from "./empty-state.slint";
import { SettingsPage } from "./settings-page.slint";
import { AboutDialog } from "./dialogs.slint";

export enum SidebarSelection {
    All,
    Settings,
    About,
}

export component MainWindow inherits Window {
    title: "Gotify";
    preferred-width: 960px;
    preferred-height: 680px;
    min-width: 760px;
    min-height: 520px;

    // Theme switch — Rust-controllable via `ui.set_theme(...)`.
    in-out property <AppearanceMode> theme: AppearanceMode.Dark;
    out property <bool> is-dark: theme != AppearanceMode.Light;

    // Palette — all derived from `is-dark` (AGENTS.md §52).
    out property <color> bg:           is-dark ? #1f2024 : #f5f6f8;
    out property <color> surface:      is-dark ? #28292d : #ffffff;
    out property <color> surface-elev: is-dark ? #2f3035 : #fafbfc;
    out property <color> border:       is-dark ? #3a3b40 : #e4e6ea;
    out property <color> text-primary: is-dark ? #e6e6e6 : #1a1a1a;
    out property <color> text-second:  is-dark ? #a0a0a0 : #5c5c5c;
    out property <color> text-muted:   is-dark ? #6a6a6a : #9a9a9a;
    out property <color> accent:       is-dark ? #4ea1ff : #0a66c2;
    out property <color> success:      #4caf50;
    out property <color> warning:      #ff9800;
    out property <color> danger:       #f44336;
    out property <color> priority-low:    #6a6a6a;
    out property <color> priority-normal: is-dark ? #4ea1ff : #0a66c2;
    out property <color> priority-high:   #ff9800;
    out property <color> priority-max:    #f44336;

    background: bg;

    in-out property <SidebarSelection> selection: SidebarSelection.All;

    // ── Phase 2 C2: mock messages + selection ────────────────────
    in-out property <[MessageItem]> messages;
    in-out property <int> selected-message-index: -1;
    callback test-notification-clicked();
    callback message-card-clicked(int);

    // ── Phase 2 C3: Settings / About / window state ──────────────
    // Initial appearance radio (0=System/1=Light/2=Dark). Maps 1:1 to
    // AppearanceMode: System=0, Light=1, Dark=2.
    in-out property <int> appearance-index: 2;

    // Show About dialog (one-shot — Rust closes it after handling).
    callback about-clicked();
    callback close-requested-save-state();

    HorizontalLayout {
        // §7 Sidebar width: 220-240px.
        Rectangle {
            width: 232px;
            background: surface;

            VerticalLayout {
                padding: 20px;
                spacing: 6px;

                Text {
                    text: "Gotify";
                    color: text-primary;
                    font-size: 18px;
                    font-weight: 700;
                }
                Text {
                    text: "Windows Client · Phase 2";
                    color: text-muted;
                    font-size: 10px;
                }

                Rectangle { height: 16px; }

                SectionLabel { label: "MESSAGES"; text-color: text-muted; }
                NavItem {
                    label: "All";
                    selected: root.selection == SidebarSelection.All;
                    clicked => { root.selection = SidebarSelection.All; }
                }

                Rectangle { height: 12px; }

                SectionLabel { label: "SERVERS"; text-color: text-muted; }
                Text {
                    text: "(no servers configured)";
                    color: text-muted;
                    font-size: 11px;
                }

                Rectangle { height: 12px; }

                SectionLabel { label: "FILTERS"; text-color: text-muted; }
                NavItem {
                    label: "High";
                    selected: false;
                    has-accent: false;
                    clicked => { /* TODO Phase 2 C2 */ }
                }
                NavItem {
                    label: "Normal";
                    selected: false;
                    has-accent: false;
                    clicked => { /* TODO Phase 2 C2 */ }
                }
                NavItem {
                    label: "Low";
                    selected: false;
                    has-accent: false;
                    clicked => { /* TODO Phase 2 C2 */ }
                }

                Rectangle { height: 12px; }

                SectionLabel { label: "APP"; text-color: text-muted; }
                NavItem {
                    label: "Settings";
                    selected: root.selection == SidebarSelection.Settings;
                    clicked => { root.selection = SidebarSelection.Settings; }
                }
                NavItem {
                    label: "About";
                    selected: root.selection == SidebarSelection.About;
                    clicked => {
                        root.selection = SidebarSelection.About;
                        root.about-clicked();
                    }
                }
            }
        }

        // Right pane — driven by `selection`.
        Rectangle {
            background: bg;

            if root.selection == SidebarSelection.All: VerticalLayout {
                padding: 24px;
                spacing: 12px;

                Text {
                    text: messages.length == 0 ? "Messages" : "Messages · " + messages.length;
                    color: text-primary;
                    font-size: 18px;
                    font-weight: 700;
                }

                if messages.length > 0: MessageList {
                    messages: messages;
                    selected-index: root.selected-message-index;
                    height: parent.height - 48px;
                    message-clicked(idx) => {
                        root.selected-message-index = idx;
                        root.message-card-clicked(idx);
                    }
                }

                if messages.length == 0: EmptyState {
                    test-notification => {
                        root.test-notification-clicked();
                    }
                }
            }

            if root.selection == SidebarSelection.Settings: SettingsPage {
                appearance-index: root.appearance-index;
                appearance-changed(idx) => {
                    root.appearance-index = idx;
                    root.theme = idx == 0 ? AppearanceMode.System :
                                 idx == 1 ? AppearanceMode.Light :
                                            AppearanceMode.Dark;
                }
            }

            // About is rendered via a Dialog overlay — not in the right pane.
            // A separate About row keeps the layout stable; the dialog is
            // shown via `about-clicked` callback to Rust.
            if root.selection == SidebarSelection.About: Rectangle {
                background: bg;
                Text {
                    x: 24px;
                    y: 24px;
                    text: "About — see the dialog.";
                    color: text-muted;
                    font-size: 13px;
                }
            }
        }
    }

    // Modal About dialog — opened when the user clicks About in the sidebar.
    AboutDialog {
        // visible-by-default is false. Toggled via Rust by listening to
        // `about-clicked`. C3 wires the bare open/close plumbing.
    }
}