#!/bin/bash

# doc cmd_du {
#
# DESCRIPTION
#   cmd_du - Prints disk usage information like TOTAL USAGE of IMAGEID files on TARGET.
#
# USAGE
#   cmd_du </path/to/git/dir> </path/to/target/dir>
#
# DEPENDENCIES bunc/src/* src/print_imageid_du
#
# }

cmd_du() {
    local GIT_DIR="${1}"
    local TARGET="${2}"
    local DB_FILE="${TARGET}/${_OPT_DB_FILE}"
    [[ ! -f "${DB_FILE}" ]] && return 3
    [[ ! -d "${GIT_DIR}/.git" ]] && return 2
    [[ "$(git -C "${GIT_DIR}" rev-list HEAD | tail -n 1)" != "$(awk 'BEGIN{FS="\t"}{if($1=="REPO_ID"){print $2}}' "${DB_FILE}")" ]] && return 2

    local imageidList=($(awk 'BEGIN{FS="\t"}{if($1=="true"){print $2}}' ${DB_FILE} | awk '!seen[$0]++'))
    local DU="$(print_imageid_du ${GIT_DIR} ${imageidList[@]})"
    _msg ECHO "Current estimated disk usage: ${DU} bytes"
}