import { assert } from '@ember/debug';
import BaseAdapter, { type AdapterOptions } from './base.ts';
import {
  without,
  compact,
  hasOwnProperties,
} from '../-private/utils/object-transforms.ts';
import removeFromDOM from '../-private/utils/remove-from-dom.ts';
import { injectAmplitude } from '../-private/vendor/snippets.ts';

export default class AmplitudeMetricsAdapter extends BaseAdapter {
  _identity?: AmplitudeIdentify;

  toStringExtension() {
    return 'Amplitude';
  }

  install() {
    const { apiKey, options } = this.config as {
      apiKey?: unknown;
      options?: Record<string, unknown>;
    };
    assert(
      `[ember-metrics] You must pass a valid \`apiKey\` to the ${this.toString()} adapter`,
      apiKey,
    );

    injectAmplitude();

    window.amplitude.getInstance().init(apiKey, null, options || {});
  }

  identify(options: AdapterOptions = {}) {
    const compactedOptions = compact(options);
    const { distinctId } = compactedOptions;
    const props = without(compactedOptions, 'distinctId');

    if (!this._identity) {
      this._identity = new window.amplitude.Identify();
    }
    const identity = this._identity;

    assert(
      `[ember-metrics] [${this.toString()}] It appears you did not pass a distictId param to "identify". You will need to do so in order for the session to be tagged to a specific user.`,
      distinctId,
    );

    if (distinctId) {
      window.amplitude.getInstance().setUserId(distinctId);
    }

    for (const k in props) {
      identity.set(k, props[k]);
    }

    window.amplitude.getInstance().identify(identity);
  }

  trackEvent(options: AdapterOptions = {}) {
    const compactedOptions = compact(options);
    const { event } = compactedOptions;
    const props = without(compactedOptions, 'event');

    if (hasOwnProperties(props)) {
      window.amplitude.getInstance().logEvent(event, props);
    } else {
      window.amplitude.getInstance().logEvent(event);
    }
  }

  trackPage(options: AdapterOptions = {}) {
    const eventOpt = { event: 'Page View' };
    const withEvent = { ...eventOpt, ...options };

    this.trackEvent(withEvent);
  }

  optOut() {
    window.amplitude.getInstance().setOptOut(true);
  }

  optIn() {
    window.amplitude.getInstance().setOptOut(false);
  }

  uninstall() {
    removeFromDOM('script[src*="amplitude"]');
  }
}