/**
 * Export functions from a function kit.
 * 
 * This template is intended for users migrating from using a Firebase
 * Extension to its equivalent function kit. It will set the global options for
 * the function kit to equal what is configured for the Extension instance.
 * Configuration from the Extension instance to migrate can be exported using
 * the `firebase ext:export --mode functions --instance <ext-instance-id>`
 * command.
 */

import { setGlobalOptions } from "firebase-functions";
import { MemoryOption, VpcEgressSetting, IngressSetting } from "firebase-functions/v2/options";
import { defineString } from "firebase-functions/params";

// This is how you create a "param". A param is a placeholder for a value
// which is determined at install/deploy time. Use a param whenever you want
// the value to differ. Learn more at
// https://firebase.google.com/docs/functions/config-env#params
export const regionParam = defineString("FUNCTION_DEFAULT_REGION", {
  input: { text: { nonEmpty: true } },
  description: "Global default region where functions should be deployed. Can be overriden per-function.",
});

// This allows you to set default options that apply to all functions in this
// kit. Learn more about these options and additional configurations at:
// https://firebase.google.com/docs/reference/functions/2nd-gen/node/firebase-functions.globaloptions
setGlobalOptions({
  region: regionParam,
  memory: (process.env.EXT_MIGRATED_SYSTEM_MEMORY as MemoryOption) ?? undefined,
  timeoutSeconds: process.env.EXT_MIGRATED_SYSTEM_TIMEOUTSECONDS
    ? Number(process.env.EXT_MIGRATED_SYSTEM_TIMEOUTSECONDS)
    : undefined,
  vpcConnectorEgressSettings:
    process.env.EXT_MIGRATED_SYSTEM_VPCCONNECTOREGRESSSETTINGS &&
    process.env.EXT_MIGRATED_SYSTEM_VPCCONNECTOREGRESSSETTINGS !== "VPC_CONNECTOR_EGRESS_SETTINGS_UNSPECIFIED"
      ? (process.env.EXT_MIGRATED_SYSTEM_VPCCONNECTOREGRESSSETTINGS as VpcEgressSetting)
      : undefined,
  vpcConnector: process.env.EXT_MIGRATED_SYSTEM_VPCCONNECTOR ?? undefined,
  maxInstances: process.env.EXT_MIGRATED_SYSTEM_MAXINSTANCES
    ? Number(process.env.EXT_MIGRATED_SYSTEM_MAXINSTANCES)
    : undefined,
  minInstances: process.env.EXT_MIGRATED_SYSTEM_MININSTANCES
    ? Number(process.env.EXT_MIGRATED_SYSTEM_MININSTANCES)
    : undefined,
  ingressSettings: (process.env.EXT_MIGRATED_SYSTEM_INGRESSSETTINGS as IngressSetting) ?? undefined,
  // Parses a comma-separated string of key:value pairs into a key-value object
  // (e.g. "key1:value1,key2:value2" -> { key1: "value1", key2: "value2" }).
  labels: process.env.EXT_MIGRATED_SYSTEM_LABELS
    ? process.env.EXT_MIGRATED_SYSTEM_LABELS.split(",").reduce<Record<string, string> | undefined>(
        (acc, curr) => {
          const [key, value] = curr.split(":");
          const trimmedKey = key?.trim();
          const trimmedValue = value?.trim();
          if (!trimmedKey || !trimmedValue) {
            return acc;
          }
          acc = acc ?? {};
          acc[trimmedKey] = trimmedValue;
          return acc;
        },
        undefined,
      )
    : undefined,
});

// Exports the functions located in the kit.
export * from "{{PACKAGE_NAME}}";