import { DefaultTool } from '@blocksuite/affine-block-surface';
import type { TextElementModel } from '@blocksuite/affine-model';
import {
  FeatureFlagService,
  TelemetryProvider,
} from '@blocksuite/affine-shared/services';
import { Bound } from '@blocksuite/global/gfx';
import type { PointerEventState } from '@blocksuite/std';
import { BaseTool, type GfxController } from '@blocksuite/std/gfx';
import * as Y from 'yjs';

import { insertEdgelessTextCommand } from './commands/insert-edgeless-text';
import { mountTextElementEditor } from './edgeless-text-editor';

function addText(gfx: GfxController, event: PointerEventState) {
  const [x, y] = gfx.viewport.toModelCoord(event.x, event.y);
  const selected = gfx.getElementByPoint(x, y);

  if (!selected) {
    const [modelX, modelY] = gfx.viewport.toModelCoord(event.x, event.y);

    if (!gfx.surface) {
      return;
    }

    const id = gfx.surface.addElement({
      type: 'text',
      xywh: new Bound(modelX, modelY, 32, 32).serialize(),
      text: new Y.Text(),
    });
    gfx.doc.captureSync();
    const textElement = gfx.getElementById(id) as TextElementModel;
    const edgelessView = gfx.std.view.getBlock(gfx.std.store.root!.id);
    if (!edgelessView) {
      console.error('edgeless view is not found.');
      return;
    }
    mountTextElementEditor(textElement, edgelessView);
  }
}

export class TextTool extends BaseTool {
  static override toolName: string = 'text';

  override click(e: PointerEventState): void {
    const textFlag = this.gfx.doc
      .get(FeatureFlagService)
      .getFlag('enable_edgeless_text');

    if (textFlag) {
      const [x, y] = this.gfx.viewport.toModelCoord(e.x, e.y);
      this.gfx.std.command.exec(insertEdgelessTextCommand, { x, y });
      this.gfx.tool.setTool(DefaultTool);
    } else {
      addText(this.gfx, e);
    }

    this.gfx.std.getOptional(TelemetryProvider)?.track('CanvasElementAdded', {
      control: 'canvas:draw',
      page: 'whiteboard editor',
      module: 'toolbar',
      segment: 'toolbar',
      type: 'text',
    });
  }
}