#!/bin/bash
#
# Bitnami MinIO Client library

# Functions

########################
# Load global variables used on MinIO Client configuration
# Globals:
#   MINIO_CLIENT_*
# Arguments:
#   None
# Returns:
#   Series of exports to be used as 'eval' arguments
#########################
minio_client_env() {
    cat <<"EOF"
export MINIO_CLIENT_BASEDIR="/opt/bitnami/minio-client"
export MINIO_CLIENT_CONFIGDIR="/.mc"
export MINIO_SERVER_HOST="${MINIO_SERVER_HOST:-}"
export MINIO_SERVER_PORT_NUMBER="${MINIO_SERVER_PORT_NUMBER:-9000}"
export MINIO_SERVER_ACCESS_KEY="${MINIO_SERVER_ACCESS_KEY:-}"
export MINIO_SERVER_SECRET_KEY="${MINIO_SERVER_SECRET_KEY:-}"
export PATH="${MINIO_CLIENT_BASEDIR}/bin:$PATH"
EOF
}

########################
# Execute an arbitrary MinIO client command
# Globals:
#   MINIO_CLIENT_CONFIGDIR
# Arguments:
#   $@ - Command to execute
# Returns:
#   None
minio_client_execute() {
    local args=("--config-dir" "${MINIO_CLIENT_CONFIGDIR}" "--quiet" "$@")
    local exec
    exec=$(command -v mc)

    "${exec}" "${args[@]}"
}

########################
# Execute an arbitrary MinIO client command with a 2s timeout
# Globals:
#   MINIO_CLIENT_CONFIGDIR
# Arguments:
#   $@ - Command to execute
# Returns:
#   None
minio_client_execute_timeout() {
    local args=("--config-dir" "${MINIO_CLIENT_CONFIGDIR}" "--quiet" "$@")
    local exec
    exec=$(command -v mc)

    timeout 2s "${exec}" "${args[@]}"
}

########################
# Configure MinIO Client to use a MinIO server
# Globals:
#   MINIO_SERVER_*
# Arguments:
#   None
# Returns:
#   Series of exports to be used as 'eval' arguments
#########################
minio_client_configure_server() {
  if [[ -n "$MINIO_SERVER_HOST" ]] && [[ -n "$MINIO_SERVER_ACCESS_KEY" ]] && [[ -n "$MINIO_SERVER_SECRET_KEY" ]]; then
      info "Adding Minio host to 'mc' configuration..."
      minio_client_execute config host add minio "http://${MINIO_SERVER_HOST}:${MINIO_SERVER_PORT_NUMBER}" "${MINIO_SERVER_ACCESS_KEY}" "${MINIO_SERVER_SECRET_KEY}"
  fi
}

########################
# Configure MinIO Client to use a local MinIO server
# Arguments:
#   $1 - MinIO server config_file
# Returns:
#   Series of exports to be used as 'eval' arguments
#########################
minio_client_configure_local() {
  local config_file="${1:?missing config_file}"
  local access_key
  local secret_key

  info "Adding local Minio host to 'mc' configuration..."
  if is_boolean_yes "$MINIO_DISTRIBUTED_MODE_ENABLED"; then
      # Access keys are set via environment variables in Distributed Mode
      minio_client_execute config host add local "http://localhost:${MINIO_SERVER_PORT_NUMBER}" "${MINIO_SERVER_ACCESS_KEY}" "${MINIO_SERVER_SECRET_KEY}"
  else
      access_key="$(jq -r .credential.accessKey < "${config_file}")"
      secret_key="$(jq -r .credential.secretKey < "${config_file}")"
      minio_client_execute config host add local "http://localhost:${MINIO_SERVER_PORT_NUMBER}" "${access_key}" "${secret_key}"
  fi
}