// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import type * as Common from '../../core/common/common.js';
import * as SDK from '../../core/sdk/sdk.js';

/**
 * Responsible for asking autofill for current form issues. This currently happens when devtools is first open.
 */
// TODO(crbug.com/1399414): Trigger check form issues when an element with an associated issue is editted in the issues panel.
let checkFormsIssuesTriggerInstance: CheckFormsIssuesTrigger|null = null;
export class CheckFormsIssuesTrigger {
  constructor() {
    SDK.TargetManager.TargetManager.instance().addModelListener(
        SDK.ResourceTreeModel.ResourceTreeModel, SDK.ResourceTreeModel.Events.Load, this.#pageLoaded, this,
        {scoped: true});

    for (const model of SDK.TargetManager.TargetManager.instance().models(SDK.ResourceTreeModel.ResourceTreeModel)) {
      if (model.target().outermostTarget() !== model.target()) {
        continue;
      }

      this.#checkFormsIssues(model);
    }
  }

  static instance({forceNew}: {forceNew: boolean} = {forceNew: false}): CheckFormsIssuesTrigger {
    if (!checkFormsIssuesTriggerInstance || forceNew) {
      checkFormsIssuesTriggerInstance = new CheckFormsIssuesTrigger();
    }
    return checkFormsIssuesTriggerInstance;
  }

  // TODO(crbug.com/1399414): Handle response by dropping current issues in favor of new ones.
  #checkFormsIssues(resourceTreeModel: SDK.ResourceTreeModel.ResourceTreeModel): void {
    void resourceTreeModel.target().auditsAgent().invoke_checkFormsIssues();
  }

  #pageLoaded(event: Common.EventTarget
                  .EventTargetEvent<{resourceTreeModel: SDK.ResourceTreeModel.ResourceTreeModel, loadTime: number}>):
      void {
    const {resourceTreeModel} = event.data;
    this.#checkFormsIssues(resourceTreeModel);
  }
}