#!/bin/sh
ts_file="$HOME/docs/org/comono/inspera/timesheet-`date +%Y%m`.csv"
make_timesheet() {
    last_day="$(cal `date '+%m %Y'` | head -n -1 | tail -1 | awk '{print $NF}')"
    if [[ -f $ts_file ]]
    then
        echo "Error: File exists - $ts_file" 1>&2
        exit
    fi
    # for i in $(seq -f %02g 1 $last_day)
    for((i=01;i<=last_day;i++))
    do
        printf "%02d-%s;   ; inspera;\n" $i `date +%m-%Y` >> $ts_file
    done
}

edit_timesheet() {
    if [[ ! -f $ts_file ]]
    then
        make_timesheet
    fi
    vim $ts_file
}

ts_summary() {
    hr_spent="$(awk -F';' '{ sum+=$2 } END {print sum}' $ts_file)"
    last_day="$(cal `date '+%m %Y'` | head -n -1 | tail -1 | awk '{print $NF}')"
    days_left="$(expr $last_day - `date +%d`)"
    hr_left="$(expr 160 - $hr_spent)"
    avg_hrs="$(awk "BEGIN {printf \"%.2f\", $hr_left/$days_left;exit}")"
    echo -e "Hours put in:\t\t$hr_spent"
    echo -e "Days Left:\t\t$days_left"
    echo -e "\x1b[48;5;238mAvg. Hours to put in:   \x1b[1m$avg_hrs\x1b[0m"
}

option="$1"
case "$option" in
    edit|e) edit_timesheet
        ;;
    make|m) make_timesheet
        ;;
    summary|s) ts_summary
        ;;
esac