#!/bin/sh

# format zeit data for easy transferrence to daptiv

if [ "$1" = "--help" ]; then
  echo "usage:"
  echo "  $0 WEEKS_AGO_START=1 WEEKS_AGO_END=1"
  echo "    Print report of tracked time for the given weeks to stdout"
  exit 1
fi

weeks_start=${1:-1}
weeks_end=${2:-1}

while [ ${weeks_start} -ge ${weeks_end} ]; do
  start=$(date -Is --date="0:00 Sat ${weeks_start} weeks ago")
  end=$(date -Is --date="23:59 Fri $((weeks_start - 1)) weeks ago")

  echo "week starting ${start}"
  zeit list --since ${start} --until ${end} --total --no-colors --decimal | tail -n2

  i=${weeks_start}
  oldifs=${IFS}
  for d in Sat Sun Mon Tue Wed Thu Fri; do
    echo "${d}"
    [ "${d}" = $(date +"%a") ] && [ ${weeks_start} -eq 1 ] && i=$((i-1))
    dayStart=$(date -Is --date="00:00 ${d} ${i} weeks ago")
    dayEnd=$(date -Is --date="23:59 ${d} ${i} weeks ago")
    IFS="
"
    for p in $(zeit list --since ${dayStart} --until ${dayEnd} --only-projects-and-tasks --no-colors | grep ◆ | awk '{for (i=2; i<NF; i++) printf $i " "; print $NF;}'); do
      echo "\t${p}:"
      
      
      ntasks=1
      while read task; do
        echo "\t\t${task} $(zeit list --since ${dayStart} --until ${dayEnd} --project ${p} --decimal | awk '{print $(NF-1) "\n";}' | head -n${ntasks} | tail -n1)"
        ntasks=$((ntasks+1))
      done << EOF
$(zeit list --since ${dayStart} --until ${dayEnd} --project ${p} --decimal | awk '{for (i=2; i<NF; i++) printf $i " "; print $NF;}' | awk -F' on' '{print $1 "\n"}')
EOF
      echo "\t\t$(zeit list --since ${dayStart} --until ${dayEnd} --project ${p} --total --decimal | tail -n2 | cut -f2- -d ' ')"
    done

    IFS=${oldifs}
  done
  weeks_start=$((weeks_start-1))
done