const { Window, Box, CenterBox, Icon, Revealer } = ags.Widget;
const { Hyprland, Applications } = ags.Service;
const { Gtk } = imports.gi;

import { EventBox } from '../misc/cursorbox.js';

const SCALE = 0.11;
const MARGIN = 8;
const SCREEN = {
  X: 1920,
  Y: 1200,
}
const DEFAULT_SPECIAL = {
  SIZE_X: 1524,
  SIZE_Y: 908,
  POS_X: 197,
  POS_Y: 170,
};

export const Overview = Window({
  name: 'overview',
  layer: 'overlay',
  popup: true,
  anchor: 'top',
  margin: [ 0, 0, 0, 0 ],
  child: Box({
    className: 'overview',
    vertical: true,
    children: [
      CenterBox({
        children: [
          null,
          Box({
            className: 'normal',
          }),
          null,
        ],
      }),
      CenterBox({
        children: [
          null,
          Box({
            className: 'special',
          }),
          null,
        ],
      }),
    ],
    connections: [
      [Hyprland, box => {
        let childI = 0;
        box._workspaces = [].concat(box.children[childI++].centerWidget.children,
                                    box.children[childI].centerWidget.children)
                            .sort((a, b) => a._id - b._id);

        box._updateWs(box);
        box._updateApps(box);
      }],
    ],
    properties: [
      ['workspaces'],

      ['updateApps', box => {
        ags.Utils.execAsync('hyprctl clients -j')
        .then(result => {
          let clients = JSON.parse(result).filter(client => client.class)

          box._workspaces.forEach(workspace => {
            let fixed = workspace.child.child.children[0];
            let toRemove = fixed.get_children();

            clients.filter(app => app.workspace.id == workspace._id).forEach(app => {
              let active = '';
              if (app.address == Hyprland.active.client.address) {
                active = 'active';
              }

              // Special workspaces that haven't been opened yet
              // return a size of 0. We need to set them to default
              // values to show the workspace properly
              if (app.size[0] === 0) {
                app.size[0] = DEFAULT_SPECIAL.SIZE_X;
                app.size[1] = DEFAULT_SPECIAL.SIZE_Y;
                app.at[0] = DEFAULT_SPECIAL.POS_X;
                app.at[1] = DEFAULT_SPECIAL.POS_Y;
              }

              let existingApp = fixed.get_children().find(ch => ch._address == app.address);
              toRemove.splice(toRemove.indexOf(existingApp), 1);

              if (existingApp) {
                fixed.move(
                  existingApp,
                  app.at[0] * SCALE,
                  app.at[1] * SCALE,
                );
                existingApp.child.className = `window ${active}`;
                existingApp.child.style = `min-width: ${app.size[0] * SCALE - MARGIN}px;
                                           min-height: ${app.size[1] * SCALE - MARGIN}px;`;
              }
              else {
                fixed.put(
                  Revealer({
                    transition: 'slide_right',
                    connections: [[Hyprland, rev => {
                      rev.revealChild = true;
                    }]],
                    properties: [
                      ['address', app.address],
                      ['toDestroy', false]
                    ],
                    child: Icon({
                      className: `window ${active}`,
                      style: `min-width: ${app.size[0] * SCALE - MARGIN}px;
                              min-height: ${app.size[1] * SCALE - MARGIN}px;`,
                      icon: app.class,
                      size: 40,
                    }),
                  }),
                  app.at[0] * SCALE,
                  app.at[1] * SCALE,
                );
              }
            });
            fixed.show_all();
            toRemove.forEach(ch => {
              if (ch._toDestroy) {
                ch.destroy();
              }
              else {
                ch.revealChild = false;
                ch._toDestroy = true;
              }
            });
          });
        }).catch(print);
      }],

      ['updateWs', box => {
        Hyprland.workspaces.forEach(ws => {
          let currentWs = box._workspaces.find(ch => ch._id == ws.id)
          if (!currentWs) {
            var childI = 0;
            if (ws.id < 0) {
              childI = 1;
            }

            currentWs = Revealer({
              transition: 'slide_right',
              properties: [
                ['id', ws.id],
              ],
              connections: [[Hyprland, box => {
                let active = Hyprland.active.workspace.id === box._id;
                box.child.child.toggleClassName('active', active);
                box.revealChild = Hyprland.getWorkspace(box._id)?.windows > 0 || active;
              }]],
              child: EventBox({
                tooltipText: `Workspace: ${ws.id}`,
                child: Box({
                  className: 'workspace',
                  style: `min-width: ${SCREEN.X * SCALE}px;
                          min-height: ${SCREEN.Y * SCALE}px;`,
                  child: ags.Widget({
                    type: Gtk.Fixed,
                  }),
                }),
              }),
            });
            box.children[childI].centerWidget.add(currentWs);
          }
        });
        box.show_all();

        // Make sure the order is correct
        box._workspaces.forEach((workspace, i) => {
          workspace.get_parent().reorder_child(workspace, i)
        });
      }],
    ],
  }),
});