saleor-apps-redis_apl/apps/taxes/src/modules/app-configuration/get-app-config.ts

import { decrypt } from "@saleor/app-sdk/settings-manager";
import { ExpectedWebhookPayload } from "../../lib/saleor/schema";
import { ChannelsConfig, channelsSchema } from "../channels-configuration/channels-config";
import { ProvidersConfig, providersSchema } from "../providers-configuration/providers-config";

export const getAppConfig = (payload: ExpectedWebhookPayload) => {
  const metadata = payload.recipient?.privateMetadata;
  let providersConfig = [] as ProvidersConfig;
  let channelsConfig = {} as ChannelsConfig;

  const secretKey = process.env.SECRET_KEY;

  if (!secretKey) {
    throw new Error("SECRET_KEY env variable is not set");
  }

  // * The App Config contains two types of data: providers and channels.
  // * We must recognize which one we are dealing with and parse it accordingly.
  metadata?.forEach((item) => {
    const decrypted = decrypt(item.value, secretKey);
    const parsed = JSON.parse(decrypted);

    const providersValidation = providersSchema.safeParse(parsed);

    if (providersValidation.success) {
      providersConfig = providersValidation.data;
      return;
    }

    const channelsValidation = channelsSchema.safeParse(parsed);

    if (channelsValidation.success) {
      channelsConfig = channelsValidation.data;
      return;
    }
  });

  return { providers: providersConfig, channels: channelsConfig };
};