/**
 * Copyright IBM Corp. 2016, 2025
 * SPDX-License-Identifier: BUSL-1.1
 */

import { debug } from '@ember/debug';
import { action } from '@ember/object';
import { guidFor } from '@ember/object/internals';
import Component from '@glimmer/component';
import { tracked } from '@glimmer/tracking';
import autosize from 'autosize';

/**
 * @module MaskedInput
 * `MaskedInput` components are textarea inputs where the input is hidden. They are used to enter sensitive information like passwords.
 *
 * @example
 * <MaskedInput @value="my secret value" @allowCopy={{true}} @allowDownload={{true}} @onChange={{log "handle change"}} />
 *
 * @param {string} value - The value to display in the input.
 * @param {string} name - The key correlated to the value. Used for the download file name.
 * @param {function} [onChange=Callback] - Callback triggered on change, sends new value. Must set the value of @value
 * @param {boolean} [allowCopy=false]  - Whether or not the input should render with a copy button.
 * @param {boolean} [allowDownload=false]  - Renders a download button that prompts a confirmation modal to download the secret value
 * @param {boolean} [displayOnly=false]  - Whether or not to display the value as a display only `pre` element or as an input.
 *
 */
export default class MaskedInputComponent extends Component {
  textareaId = 'textarea-' + guidFor(this);
  @tracked showValue = false;
  @tracked modalOpen = false;
  @tracked stringifyDownload = false;

  constructor() {
    super(...arguments);
    if (!this.args.onChange && !this.args.displayOnly) {
      debug('onChange is required for editable Masked Input!');
    }
    this.updateSize();
  }

  updateSize() {
    autosize(document.getElementById(this.textareaId));
  }

  @action onChange(evt) {
    const value = evt.target.value;
    if (this.args.onChange) {
      this.args.onChange(value);
    }
  }

  @action handleKeyUp(name, evt) {
    this.updateSize();
    const { value } = evt.target;
    if (this.args.onKeyUp) {
      this.args.onKeyUp(name, value);
    }
  }

  @action toggleMask() {
    this.showValue = !this.showValue;
  }

  @action toggleStringifyDownload(event) {
    this.stringifyDownload = event.target.checked;
  }

  get copyValue() {
    // Value must be a string to be copied
    const { value } = this.args;
    if (!value || typeof value === 'string') return value;
    if (typeof value === 'object') return JSON.stringify(value);
    return value.toString();
  }
}
