const { Gdk, Gio, Gtk } = imports.gi;
import { App, Service, Utils, Variable, Widget, SCREEN_HEIGHT, SCREEN_WIDTH } from '../../imports.js';
import Applications from 'resource:///com/github/Aylur/ags/service/applications.js';
import Hyprland from 'resource:///com/github/Aylur/ags/service/hyprland.js';
const { execAsync, exec } = Utils;
import { setupCursorHover, setupCursorHoverGrab } from "../../lib/cursorhover.js";
import { DoubleRevealer } from "../../lib/doublerevealer.js";
import { execAndClose, expandTilde, hasUnterminatedBackslash, startsWithNumber, launchCustomCommand, ls } from './miscfunctions.js';
import {
    CalculationResultButton, CustomCommandButton, DirectoryButton,
    DesktopEntryButton, ExecuteCommandButton, SearchButton
} from './searchbuttons.js';
import { dumpToWorkspace, swapWorkspace } from "./actions.js";

// Add math funcs
const { abs, sin, cos, tan, cot, asin, acos, atan, acot } = Math;
const pi = Math.PI;
// trigonometric funcs for deg
const sind = x => sin(x * pi / 180);
const cosd = x => cos(x * pi / 180);
const tand = x => tan(x * pi / 180);
const cotd = x => cot(x * pi / 180);
const asind = x => asin(x) * 180 / pi;
const acosd = x => acos(x) * 180 / pi;
const atand = x => atan(x) * 180 / pi;
const acotd = x => acot(x) * 180 / pi;

const MAX_RESULTS = 10;
const OVERVIEW_SCALE = 0.18; // = overview workspace box / screen size
const OVERVIEW_WS_NUM_SCALE = 0.09;
const OVERVIEW_WS_NUM_MARGIN_SCALE = 0.07;
const TARGET = [Gtk.TargetEntry.new('text/plain', Gtk.TargetFlags.SAME_APP, 0)];
const searchPromptTexts = [
    'Try "~/.config"',
    'Try "Files"',
    'Try "6*cos(pi)"',
    'Try "sudo pacman -Syu"',
    'Try "How to basic"',
    'Drag n\' drop to move windows',
    'Type to search',
]

const overviewTick = Variable(false);

function truncateTitle(str) {
    let lastDash = -1;
    let found = -1; // 0: em dash, 1: en dash, 2: minus, 3: vertical bar, 4: middle dot
    for (let i = str.length - 1; i >= 0; i--) {
        if (str[i] === '—') {
            found = 0;
            lastDash = i;
        }
        else if (str[i] === '–' && found < 1) {
            found = 1;
            lastDash = i;
        }
        else if (str[i] === '-' && found < 2) {
            found = 2;
            lastDash = i;
        }
        else if (str[i] === '|' && found < 3) {
            found = 3;
            lastDash = i;
        }
        else if (str[i] === '·' && found < 4) {
            found = 4;
            lastDash = i;
        }
    }
    if (lastDash === -1) return str;
    return str.substring(0, lastDash);
}

function iconExists(iconName) {
    let iconTheme = Gtk.IconTheme.get_default();
    return iconTheme.has_icon(iconName);
}

function substitute(str) {
    const subs = [
        { from: 'code-url-handler', to: 'visual-studio-code' },
        { from: 'Code', to: 'visual-studio-code' },
        { from: 'GitHub Desktop', to: 'github-desktop' },
        { from: 'wpsoffice', to: 'wps-office2019-kprometheus' },
        { from: 'gnome-tweaks', to: 'org.gnome.tweaks' },
        { from: 'Minecraft* 1.20.1', to: 'minecraft' },
        { from: '', to: 'image-missing' },
    ];

    for (const { from, to } of subs) {
        if (from === str)
            return to;
    }

    if (!iconExists(str)) str = str.toLowerCase().replace(/\s+/g, '-'); // Turn into kebab-case
    return str;
}

const ContextWorkspaceArray = ({ label, actionFunc, thisWorkspace }) => Widget.MenuItem({
    label: `${label}`,
    setup: (menuItem) => {
        let submenu = new Gtk.Menu();
        submenu.className = 'menu';
        for (let i = 1; i <= 10; i++) {
            let button = new Gtk.MenuItem({
                label: `Workspace ${i}`
            });
            button.connect("activate", () => {
                // execAsync([`${onClickBinary}`, `${thisWorkspace}`, `${i}`]).catch(print);
                actionFunc(thisWorkspace, i);
                overviewTick.value = !overviewTick.value;
            });
            submenu.append(button);
        }
        menuItem.set_reserve_indicator(true);
        menuItem.set_submenu(submenu);
    }
})

const client = ({ address, size: [w, h], workspace: { id, name }, class: c, title, xwayland }) => {
    const revealInfoCondition = (Math.min(w, h) * OVERVIEW_SCALE > 70);
    if (w <= 0 || h <= 0) return null;
    title = truncateTitle(title);
    return Widget.Button({
        className: 'overview-tasks-window',
        hpack: 'center',
        vpack: 'center',
        onClicked: () => {
            execAsync([`bash`, `-c`, `hyprctl dispatch focuswindow address:${address}`, `&`]).catch(print);
            App.closeWindow('overview');
        },
        onMiddleClickRelease: () => execAsync([`bash`, `-c`, `hyprctl dispatch closewindow address:${address}`, `&`]).catch(print),
        onSecondaryClick: (button) => {
            button.toggleClassName('overview-tasks-window-selected', true);
            const menu = Widget.Menu({
                className: 'menu',
                children: [
                    Widget.MenuItem({
                        child: Widget.Label({
                            xalign: 0,
                            label: "Close (Middle-click)",
                        }),
                        onActivate: () => {
                            execAsync([`bash`, `-c`, `hyprctl dispatch closewindow address:${address}`, `&`])
                                .catch(print);
                        }
                    }),
                    ContextWorkspaceArray({
                        label: "Dump windows to workspace",
                        actionFunc: dumpToWorkspace,
                        thisWorkspace: Number(id)
                    }),
                    ContextWorkspaceArray({
                        label: "Swap windows with workspace",
                        actionFunc: swapWorkspace,
                        thisWorkspace: Number(id)
                    }),
                ],
            });
            menu.connect("deactivate", () => {
                button.toggleClassName('overview-tasks-window-selected', false);
            })
            menu.connect("selection-done", () => {
                button.toggleClassName('overview-tasks-window-selected', false);
            })
            menu.popup_at_pointer(null); // Show the menu at the pointer's position
        },
        child: Widget.Box({
            css: `
                min-width: ${Math.max(w * OVERVIEW_SCALE - 4, 1)}px;
                min-height: ${Math.max(h * OVERVIEW_SCALE - 4, 1)}px;
            `,
            homogeneous: true,
            child: Widget.Box({
                vertical: true,
                vpack: 'center',
                className: 'spacing-v-5',
                children: [
                    Widget.Icon({
                        icon: substitute(c),
                        size: Math.min(w, h) * OVERVIEW_SCALE / 2.5,
                    }),
                    // TODO: Add xwayland tag instead of just having italics
                    DoubleRevealer({
                        transition1: 'slide_right',
                        transition2: 'slide_down',
                        revealChild: revealInfoCondition,
                        child: Widget.Scrollable({
                            hexpand: true,
                            vscroll: 'never',
                            hscroll: 'automatic',
                            child: Widget.Label({
                                truncate: 'end',
                                className: `${xwayland ? 'txt txt-italic' : 'txt'}`,
                                css: `
                                    font-size: ${Math.min(SCREEN_WIDTH, SCREEN_HEIGHT) * OVERVIEW_SCALE / 14.6}px;
                                    margin: 0px ${Math.min(SCREEN_WIDTH, SCREEN_HEIGHT) * OVERVIEW_SCALE / 10}px;
                                `,
                                // If the title is too short, include the class
                                label: (title.length <= 1 ? `${c}: ${title}` : title),
                            })
                        })
                    })
                ]
            })
        }),
        tooltipText: `${c}: ${title}`,
        setup: (button) => {
            setupCursorHoverGrab(button);

            button.drag_source_set(Gdk.ModifierType.BUTTON1_MASK, TARGET, Gdk.DragAction.MOVE);
            button.drag_source_set_icon_name(substitute(c));
            // button.drag_source_set_icon_gicon(icon);

            button.connect('drag-begin', (button) => {  // On drag start, add the dragging class
                button.toggleClassName('overview-tasks-window-dragging', true);
            });
            button.connect('drag-data-get', (_w, _c, data) => { // On drag finish, give address
                data.set_text(address, address.length);
                button.toggleClassName('overview-tasks-window-dragging', false);
            });
        },
    });
}

const workspace = index => {
    const fixed = Gtk.Fixed.new();
    const WorkspaceNumber = (index) => Widget.Label({
        className: 'overview-tasks-workspace-number',
        label: `${index}`,
        css: `
            margin: ${Math.min(SCREEN_WIDTH, SCREEN_HEIGHT) * OVERVIEW_SCALE * OVERVIEW_WS_NUM_MARGIN_SCALE}px;
            font-size: ${SCREEN_HEIGHT * OVERVIEW_SCALE * OVERVIEW_WS_NUM_SCALE}px;
        `,
    })
    const widget = Widget.Box({
        className: 'overview-tasks-workspace',
        vpack: 'center',
        css: `
        min-width: ${SCREEN_WIDTH * OVERVIEW_SCALE}px;
        min-height: ${SCREEN_HEIGHT * OVERVIEW_SCALE}px;
        `,
        children: [Widget.EventBox({
            hexpand: true,
            vexpand: true,
            onPrimaryClickRelease: () => {
                execAsync([`bash`, `-c`, `hyprctl dispatch workspace ${index}`, `&`]).catch(print);
                App.closeWindow('overview');
            },
            setup: eventbox => {
                eventbox.drag_dest_set(Gtk.DestDefaults.ALL, TARGET, Gdk.DragAction.COPY);
                eventbox.connect('drag-data-received', (_w, _c, _x, _y, data) => {
                    overviewTick.value = !overviewTick.value;
                    execAsync([`bash`, `-c`, `hyprctl dispatch movetoworkspacesilent ${index},address:${data.get_text()}`, `&`]).catch(print);
                });
            },
            child: fixed,
        })],
    });
    widget.update = clients => {
        clients = clients.filter(({ workspace: { id } }) => id === index);

        // this is for my monitor layout
        // shifts clients back by SCREEN_WIDTHpx if necessary
        clients = clients.map(client => {
            const [x, y] = client.at;
            if (x > SCREEN_WIDTH)
                client.at = [x - SCREEN_WIDTH, y];
            return client;
        });

        fixed.get_children().forEach(ch => ch.destroy());
        fixed.put(WorkspaceNumber(index), 0, 0);
        clients.forEach(c => c.mapped && fixed.put(client(c), c.at[0] * OVERVIEW_SCALE, c.at[1] * OVERVIEW_SCALE));
        fixed.show_all();
    };
    return widget;
};

const arr = (s, n) => {
    const array = [];
    for (let i = 0; i < n; i++)
        array.push(s + i);

    return array;
};

const OverviewRow = ({ startWorkspace, workspaces, windowName = 'overview' }) => Widget.Box({
    children: arr(startWorkspace, workspaces).map(workspace),
    properties: [['update', box => {
        execAsync('hyprctl -j clients').then(clients => {
            const json = JSON.parse(clients);
            box.get_children().forEach(ch => ch.update(json));
        }).catch(print);
    }]],
    setup: (box) => box._update(box),
    connections: [
        // Update on change
        [overviewTick, box => { if (!App.getWindow(windowName).visible) return; Utils.timeout(2, () => box._update(box)); }],
        [Hyprland, box => { if (!App.getWindow(windowName).visible) return; box._update(box); }, 'client-added'],
        [Hyprland, box => { if (!App.getWindow(windowName).visible) return; box._update(box); }, 'client-removed'],
        // Update on show
        [App, (box, name, visible) => { // Update on open
            if (name == 'overview' && visible) {
                box._update(box);
            }
        }],
    ],
});


export const SearchAndWindows = () => {
    var _appSearchResults = [];

    const clickOutsideToClose = Widget.EventBox({
        onPrimaryClick: () => App.closeWindow('overview'),
        onSecondaryClick: () => App.closeWindow('overview'),
        onMiddleClick: () => App.closeWindow('overview'),
    });
    const resultsBox = Widget.Box({
        className: 'overview-search-results',
        vertical: true,
        vexpand: true,
    });
    const resultsRevealer = Widget.Revealer({
        transitionDuration: 200,
        revealChild: false,
        transition: 'slide_down',
        // duration: 200,
        hpack: 'center',
        child: resultsBox,
    });
    const overviewRevealer = Widget.Revealer({
        revealChild: true,
        transition: 'slide_down',
        transitionDuration: 200,
        child: Widget.Box({
            vertical: true,
            className: 'overview-tasks',
            children: [
                OverviewRow({ startWorkspace: 1, workspaces: 5 }),
                OverviewRow({ startWorkspace: 6, workspaces: 5 }),
            ]
        }),
    });
    const entryPromptRevealer = Widget.Revealer({
        transition: 'crossfade',
        transitionDuration: 150,
        revealChild: true,
        hpack: 'center',
        child: Widget.Label({
            className: 'overview-search-prompt txt-small txt',
            label: searchPromptTexts[Math.floor(Math.random() * searchPromptTexts.length)],
        })
    });

    const entryIconRevealer = Widget.Revealer({
        transition: 'crossfade',
        transitionDuration: 150,
        revealChild: false,
        hpack: 'end',
        child: Widget.Label({
            className: 'txt txt-large icon-material overview-search-icon',
            label: 'search',
        }),
    });

    const entryIcon = Widget.Box({
        className: 'overview-search-prompt-box',
        setup: box => box.pack_start(entryIconRevealer, true, true, 0),
    });

    const entry = Widget.Entry({
        className: 'overview-search-box txt-small txt',
        hpack: 'center',
        onAccept: (self) => { // This is when you hit Enter
            const text = self.text;
            if(text.length == 0) return;
            const isAction = text.startsWith('>');
            const isDir = (entry.text[0] == '/' || entry.text[0] == '~');

            if (startsWithNumber(text)) { // Eval on typing is dangerous, this is a workaround
                try {
                    const fullResult = eval(text);
                    // copy
                    execAsync(['wl-copy', `${fullResult}`]).catch(print);
                    App.closeWindow('overview');
                    return;
                } catch (e) {
                    // console.log(e);
                }
            }
            if (isDir) {
                App.closeWindow('overview');
                execAsync(['bash', '-c', `xdg-open "${expandTilde(text)}"`, `&`]).catch(print);
                return;
            }
            if (_appSearchResults.length > 0) {
                App.closeWindow('overview');
                _appSearchResults[0].launch();
                return;
            }
            else if (text[0] == '>') { // Custom commands
                App.closeWindow('overview');
                launchCustomCommand(text);
                return;
            }
            // Fallback: Execute command
            if (!isAction && exec(`bash -c "command -v ${text.split(' ')[0]}"`) != '') {
                if (text.startsWith('sudo'))
                    execAndClose(text, true);
                else
                    execAndClose(text, false);
            }

            else {
                App.closeWindow('overview');
                execAsync(['bash', '-c', `xdg-open 'https://www.google.com/search?q=${text} -site:quora.com' &`]).catch(print); // fuck quora
            }
        },
        // Actually onChange but this is ta workaround for a bug
        connections: [
            ['notify::text', (entry) => { // This is when you type
                const isAction = entry.text[0] == '>';
                const isDir = (entry.text[0] == '/' || entry.text[0] == '~');
                resultsBox.get_children().forEach(ch => ch.destroy());
                // check empty if so then dont do stuff
                if (entry.text == '') {
                    resultsRevealer.set_reveal_child(false);
                    overviewRevealer.set_reveal_child(true);
                    entryPromptRevealer.set_reveal_child(true);
                    entryIconRevealer.set_reveal_child(false);
                    entry.toggleClassName('overview-search-box-extended', false);
                }
                else {
                    const text = entry.text;
                    resultsRevealer.set_reveal_child(true);
                    overviewRevealer.set_reveal_child(false);
                    entryPromptRevealer.set_reveal_child(false);
                    entryIconRevealer.set_reveal_child(true);
                    entry.toggleClassName('overview-search-box-extended', true);
                    _appSearchResults = Applications.query(text);

                    // Calculate
                    if (startsWithNumber(text)) { // Eval on typing is dangerous, this is a small workaround.
                        try {
                            const fullResult = eval(text);
                            resultsBox.add(CalculationResultButton({ result: fullResult, text: text }));
                        } catch (e) {
                            // console.log(e);
                        }
                    }
                    if (isDir) {
                        var contents = [];
                        contents = ls({ path: text, silent: true });
                        contents.forEach((item) => {
                            resultsBox.add(DirectoryButton(item));
                        })
                    }
                    if (isAction) { // Eval on typing is dangerous, this is a workaround.
                        resultsBox.add(CustomCommandButton({ text: entry.text }));
                    }
                    // Add application entries
                    let appsToAdd = MAX_RESULTS;
                    _appSearchResults.forEach(app => {
                        if (appsToAdd == 0) return;
                        resultsBox.add(DesktopEntryButton(app));
                        appsToAdd--;
                    });

                    // Fallbacks
                    // if the first word is an actual command
                    if (!isAction && !hasUnterminatedBackslash(text) && exec(`bash -c "command -v ${text.split(' ')[0]}"`) != '') {
                        resultsBox.add(ExecuteCommandButton({ command: entry.text, terminal: entry.text.startsWith('sudo') }));
                    }

                    // Add fallback: search
                    resultsBox.add(SearchButton({ text: entry.text }));
                    resultsBox.show_all();
                }
            }]
        ],
    });

    return Widget.Box({
        vertical: true,
        children: [
            clickOutsideToClose,
            Widget.Box({
                hpack: 'center',
                children: [
                    entry,
                    Widget.Box({
                        className: 'overview-search-icon-box',
                        setup: box => box.pack_start(entryPromptRevealer, true, true, 0),
                    }),
                    entryIcon,
                ]
            }),
            overviewRevealer,
            resultsRevealer,
        ],
        connections: [
            [App, (_b, name, visible) => {
                if (name == 'overview' && !visible) {
                    entryPromptRevealer.child.label = searchPromptTexts[Math.floor(Math.random() * searchPromptTexts.length)];
                    resultsBox.children = [];
                    entry.set_text('');
                }
            }],
            ['key-press-event', (widget, event) => { // Typing
                if (event.get_keyval()[1] >= 32 && event.get_keyval()[1] <= 126 && widget != entry) {
                    Utils.timeout(1, () => entry.grab_focus());
                    entry.set_text(entry.text + String.fromCharCode(event.get_keyval()[1]));
                    entry.set_position(-1);
                }
            }],
        ],
    });
};