Calculate the duration of mr studies in Bruker's nmr directory.

duration

#!/bin/bash
function adjust() {
    local cwd=$(pwd)
    local sd=$1
    local total=$2
    local mtime1=0
    local mtime2=0
    local gap=0
    cd ${sd}
    for ssd in $(ls -t -r -d */)
    do
        if [[ ! ${ssd} =~ ^[0-9]+ ]]; then
            continue
        fi
        if [[ $mtime1 -eq 0 ]]; then
            mtime1=$(stat -c "%Y" ${ssd})
        fi
        mtime2=$(stat -c "%Y" ${ssd})
        gap=$((mtime2-mtime1))
        if [[ ${gap} -gt 86400 ]]; then
            total=$((total-gap))
        fi
        mtime1=${mtime2}
    done
    cd ${cwd}
    echo ${total}
}

CWD=$(pwd)

if [[ $(basename ${CWD}) != "nmr" ]]; then
   echo "${CWD} is not a valid parent directory for nmr studies." 1>&2
   exit 1
fi

DAYS=$1
if [[ -n "$DAYS" ]]; then
    NOW=$(date +%s)
    START=$((NOW-86400*DAYS))
else
    START=0
fi

echo "\"Study Directory\", \"Duration(seconds)\", \"Duration(minutes)\", \"Duration(hours)\", \"Adjusted\","

TOTAL_SECONDS=0
for SDIR in $(ls -d */)
do
    cd ${CWD}/${SDIR}
    SDIR=$(pwd)
    ADJUSTED=false
    MIN_MTIME=$(for f in $(ls); do stat -c "%Y" $f; done | sort -n | head -n 1)
    MAX_MTIME=$(for f in $(ls); do stat -c "%Y" $f; done | sort -n | tail -n 1)
    if [[ ${MIN_MTIME} -lt ${START} ]]; then
        continue
    fi
    SECONDS=$((MAX_MTIME-MIN_MTIME))
    if [[ $SECONDS -gt 86400 ]]; then
        SECONDS=$(adjust $SDIR $SECONDS)
        ADJUSTED=true
    fi
    MINUTES=$(printf "%5.2f" $(echo "${SECONDS}/60" | bc -l))
    HOURS=$(printf "%3.2f" $(echo "${SECONDS}/3600" | bc -l))
    TOTAL_SECONDS=$((TOTAL_SECONDS+SECONDS))
    echo "\"$(basename ${SDIR})\", ${SECONDS}, ${MINUTES}, ${HOURS}, ${ADJUSTED}"
    cd ${CWD}
done
TOTAL_MINUTES=$(printf "%5.2f" $(echo "${TOTAL_SECONDS}/60" | bc -l))
TOTAL_HOURS=$(printf "%3.2f" $(echo "${TOTAL_SECONDS}/3600" | bc -l))
echo "Total, ${TOTAL_SECONDS}, ${TOTAL_MINUTES}, ${TOTAL_HOURS}, ,"