#!/bin/bash

# doc db_update {
#
# DESCRIPTION
#   db_update - Updates TARGET's DB_FILE with defined IMAGEIDs
#
# USAGE
#   db_update <path/to/git/dir> <path/to/target/dir> <path/to/db/file> <IMAGEID> 
#
# }

db_update() {
    local GIT_DIR="${1}"
    local TARGET="${2}"
    local DB_FILE="${3}"
    local IMAGEID="${4}"

    [[ -f "${DB_FILE}" ]] || touch "${DB_FILE}"
    trackidList=($(awk 'BEGIN{FS="\" : \"";RS="\",\n * \""}{if($1=="TRACKID"){print $2}}' ${GIT_DIR}/${IMAGEID}.tags))
    if [[ ! -f "${GIT_DIR}/${IMAGEID}.tags" ]]; then
        gawk -i inplace -v imageid="${IMAGEID}" 'BEGIN{FS="\t";OFS="\t"}{if($2==imageid){$1="null"}{print $0}}' ${DB_FILE}
        return 1
    fi
    for trackid in ${trackidList[@]}; do
        if [[ -z $(awk -v imageid="${IMAGEID}" -v trackid="${trackid}" 'BEGIN{FS="\t"}{if($2==imageid && $3==trackid){print $0}}' ${DB_FILE}) ]]; then
            echo -e "false\t${IMAGEID}\t${trackid}\tnull" >> ${DB_FILE}
        fi
    done
    return 0
}