a shell script to clone a git repo into the current EAS build container

eas_sync_customer_config.bash

#!/bin/bash
set -e  # exit when any command fails

function LOG() {
  printf 'LOG: %s %s\n' "$(date '+%b-%d %T')" "${1}"
}

function CLONE_GITHUB_REPO() {
  #
  # EAS_SCRT_GITHUB_CONFIG_REPOS_TOKEN is an account-level Secret stored in our Expo account's Settings
  #
  #   It contains the PERSONAL ACCESS TOKEN for the GitHub account so that the `git clone` command below
  #   has access to the GH repository without need for username & password.
  #
  #   See https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/creating-a-personal-access-token
  #
  export GITHUB_CONFIG_REPOS_TOKEN="${EAS_SCRT_GITHUB_CONFIG_REPOS_TOKEN}"

  if [[ -z ${GITHUB_CONFIG_REPOS_TOKEN} ]]; then
    LOG "No value for EAS secret GITHUB_CONFIG_REPOS_TOKEN (${GITHUB_CONFIG_REPOS_TOKEN})"
    exit 4
  fi
  if [[ -z ${GITHUB_URL_NO_SCHEME} ]]; then
    LOG "No value for GITHUB_URL_NO_SCHEME (${GITHUB_URL_NO_SCHEME})"
    exit 11
  fi
  if [[ ! -d ${CONFIGS_DIR} ]]; then
    LOG "CONFIGS_DIR is not a directory (${CONFIGS_DIR})"
    exit 12
  fi

  GH_URL="https://${GITHUB_CONFIG_REPOS_TOKEN}"
  GH_URL="${GH_URL}:x-oauth-basic"
  GH_URL="${GH_URL}@${GITHUB_URL_NO_SCHEME}"

  CONFIGS_BRANCH="main"

  LOG "Cloning ${GITHUB_URL_NO_SCHEME} into ${CONFIGS_DIR}/${CUSTOMER_GROUP_ID}"
  git clone -b "${CONFIGS_BRANCH}" "${GH_URL}" "${CONFIGS_DIR}/${CUSTOMER_GROUP_ID}"

  if [[ ! -d "${CONFIGS_DIR}/${CUSTOMER_GROUP_ID}" ]]; then
    LOG "Clone destination is not a directory: (${CONFIGS_DIR}/${CUSTOMER_GROUP_ID})"
    exit 14
  fi
  LOG "Cloned directory contents:"
  ls -l "${CONFIGS_DIR}/${CUSTOMER_GROUP_ID}"
}

function COPY_PROJECT_TO_CURRENT_CONFIG() {
  if [[ ! -d "${PROJECT_CONFIG_DIR}" ]]; then
    LOG "Not a directory PROJECT_CONFIG_DIR (${PROJECT_CONFIG_DIR})"
    exit 21
  fi

  SRC_BUILD_DIR="${ROOT_DIR}/src/build"
  mkdir -p ${SRC_BUILD_DIR}
  CURRENT_CONFIG_DIR="${SRC_BUILD_DIR}/current-config"

  LOG "cp -pr ${PROJECT_CONFIG_DIR} ${CURRENT_CONFIG_DIR}"
  cp -pr "${PROJECT_CONFIG_DIR}" "${CURRENT_CONFIG_DIR}"

  LOG "Contents of CURRENT_CONFIG_DIR (${CURRENT_CONFIG_DIR})"
  ls -l ${CURRENT_CONFIG_DIR}
}

#
# MAIN part of script
#
if [[ ${EAS_BUILD} == true ]]; then
  LOG "EAS_BUILD is true"

  export ROOT_DIR=$(pwd)
  export CONFIGS_DIR="${ROOT_DIR}/customer-configs"

  # EAS_SCRT_CUSTOMER_ID is a project-level Secret in our Expo project
  export CUSTOMER_ID="${EAS_SCRT_CUSTOMER_ID}"

  # EAS_SCRT_FIREBASE_PROJECT_ID is a project-level Secret in our Expo project
  export FIREBASE_PROJECT_ID="${EAS_SCRT_FIREBASE_PROJECT_ID}"

  if [[ -z "${CUSTOMER_ID}" || -z "${FIREBASE_PROJECT_ID}" ]]; then
    LOG "No value for CUSTOMER_ID ($CUSTOMER_ID) or FIREBASE_PROJECT_ID ($FIREBASE_PROJECT_ID)"
    USAGE
    exit 5
  fi

  export PROJECT_CONFIG_DIR="${CONFIGS_DIR}/${CUSTOMER_ID}/${FIREBASE_PROJECT_ID}"

 case "$CUSTOMER_ID" in
    "developer-configs")
      GITHUB_URL_NO_SCHEME="github.com/gregfenton/app-configs-developer"
    ;;

    "qa")
      GITHUB_URL_NO_SCHEME="github.com/gregfenton/app-configs-testing"
    ;;

    "customer1")
      GITHUB_URL_NO_SCHEME="github.com/gregfenton/app-configs-customer1"
    ;;

    "customer2")
      GITHUB_URL_NO_SCHEME="github.com/gregfenton/app-configs-customer2"
    ;;

    *)
      LOG "Unknown value for CUSTOMER_ID ($CUSTOMER_ID)"
      exit 6
    ;;
  esac

  CLONE_GITHUB_REPO
  COPY_PROJECT_TO_CURRENT_CONFIG
else
  LOG "Not an EAS_BUILD"
fi

LOG "done"