utils.sh

#!/usr/bin/env bash

if [ -z "${BPKG_UTILS}" ]; then
  BPKG_UTILS=1

  ## Collection of shared bpkg functions

  ## Init local config and set environmental defaults
  bpkg_initrc () {
    local global_config=${BPKG_GLOBAL_CONFIG:-"/etc/bpkgrc"}
    # shellcheck disable=SC1090
    [ -f "$global_config" ] && source "$global_config"
    local config=${BPKG_CONFIG:-"$HOME/.bpkgrc"}
    # shellcheck disable=SC1090
    [ -f "$config" ] && source "$config"
    ## set defaults
    if [ ${#BPKG_REMOTES[@]} -eq 0 ]; then
      BPKG_REMOTES[0]=${BPKG_REMOTE-https://raw.githubusercontent.com}
      BPKG_GIT_REMOTES[0]=${BPKG_GIT_REMOTE-https://github.com}

      export BPKG_REMOTES
      export BPKG_GIT_REMOTE
      export BPKG_GIT_REMOTES
    fi

    export BPKG_PACKAGE_USER="${BPKG_PACKAGE_USER:-"bpkg"}"
    export BPKG_INDEX=${BPKG_INDEX:-"$HOME/.bpkg/index"}

    bpkg_validate

    return $?
  }

  ## check parameter consistency
  bpkg_validate () {
    if [ ${#BPKG_GIT_REMOTES[@]} -ne ${#BPKG_REMOTES[@]} ]; then
      bpkg_error "$(printf 'BPKG_GIT_REMOTES[%d] differs in size from BPKG_REMOTES[%d] array' "${#BPKG_GIT_REMOTES[@]}" "${#BPKG_REMOTES[@]}")"
      return 1
    fi
    return 0
  }


  ## format and output message
  bpkg_message () {
    bpkg_exec_exist bpkg-term &&
      bpkg-term color "${1}"
    shift

    echo -n "    ${1}"
    shift

    bpkg_exec_exist bpkg-term &&
      bpkg-term reset

    printf ": "

    bpkg_exec_exist bpkg-term && {
      bpkg-term reset
      bpkg-term bright
    }

    printf "%s\n" "${@}"

    bpkg_exec_exist bpkg-term &&
      bpkg-term reset
  }

  ## output error
  bpkg_error () {
    {
      bpkg_message "red" "error" "${@}"
    } >&2
  }

  ## output warning
  bpkg_warn () {
    {
      bpkg_message "yellow" "warn" "${@}"
    } >&2
  }

  ## output info
  bpkg_info () {
    local title="info"
    if (( "${#}" > 1 )); then
      title="${1}"
      shift
    fi
    bpkg_message "cyan" "${title}" "${@}"
  }


  ## check if executable exists in path
  bpkg_exec_exist () {
    local exec_name="${1}"

    type -f "${exec_name}" > /dev/null 2>&1
  }

  ## executable exists in path or exit with message
  bpkg_exec_or_exit () {
    local exec_name="${1}"
    local exit_error="${2:-1}"

    if ! bpkg_exec_exist "${exec_name}"; then
      bpkg_error "${exec_name} not found, aborting"
      exit "${exit_error}"
    fi
  }


  ## takes a remote and git-remote and sets the globals:
  ##  BPKG_REMOTE: raw remote URI
  ##  BPKG_GIT_REMOTE: git remote for cloning
  ##  BPKG_AUTH_GIT_REMOTE: git remote with oauth info embedded,
  ##  BPKG_OAUTH_TOKEN: token for x-oauth-basic
  ##  BPKG_CURL_AUTH_PARAM: auth arguments for raw curl requests
  ##  BPKG_REMOTE_INDEX: location of local index for remote
  bpkg_select_remote () {
    local remote=$1
    local git_remote=$2
    export BPKG_REMOTE_HOST=$(echo "$git_remote" | sed 's/.*:\/\///' | sed 's/\/$//' | tr '/' '_')
    export BPKG_REMOTE_INDEX="$BPKG_INDEX/$BPKG_REMOTE_HOST"
    # shellcheck disable=SC2034
    export BPKG_REMOTE_INDEX_FILE="$BPKG_REMOTE_INDEX/index.txt"
    export BPKG_OAUTH_TOKEN=""
    export BPKG_CURL_AUTH_PARAM=""
    export BPKG_GIT_REMOTE=$git_remote
    export BPKG_AUTH_GIT_REMOTE=$git_remote
    if [ "${remote:0:10}" == "raw-oauth|" ]; then
      OLDIFS="${IFS}"
      IFS="|"
      # shellcheck disable=SC2206
      local remote_parts=($remote)
      IFS="${OLDIFS}"
      export BPKG_OAUTH_TOKEN=${remote_parts[1]}
      # shellcheck disable=SC2034
      export BPKG_CURL_AUTH_PARAM="-u $BPKG_OAUTH_TOKEN:x-oauth-basic"
      export BPKG_REMOTE=${remote_parts[2]}
      if [[ "$git_remote" == https://* ]] && [[ "$git_remote" != *x-oauth-basic* ]] && [[ "$git_remote" != *${BPKG_OAUTH_TOKEN}* ]]; then
        # shellcheck disable=SC2034
        export BPKG_AUTH_GIT_REMOTE=${git_remote/https:\/\//https:\/\/$BPKG_OAUTH_TOKEN:x-oauth-basic@}
      fi
    else
      export BPKG_REMOTE="$remote"
    fi
  }

  ## given a user and name, sets BPKG_REMOTE_RAW_PATH using the available
  ## BPKG_REMOTE and BPKG_OAUTH_TOKEN details
  bpkg_select_raw_path () {
    local user=$1
    local name=$2
    if [ "$BPKG_OAUTH_TOKEN" == "" ]; then
      export BPKG_REMOTE_RAW_PATH="$BPKG_REMOTE/$user/$name"
    else
      # shellcheck disable=SC2034
      Export BPKG_REMOTE_RAW_PATH="$BPKG_REMOTE/$user/$name/raw"
    fi
    return 0
  }


  bpkg_exec_or_exit bpkg-env

  # shellcheck disable=SC2230
  # shellcheck source=lib/env/env.sh
  source "$(which bpkg-env)"


  export -f bpkg_initrc
  export -f bpkg_validate

  export -f bpkg_message
  export -f bpkg_warn
  export -f bpkg_error
  export -f bpkg_info

  export -f bpkg_exec_exist
  export -f bpkg_exec_or_exit

  export -f bpkg_select_remote
  export -f bpkg_select_raw_path
fi