generate weekly memo

next_week.sh

#! /bin/bash

year=`date +%Y`
month=`date +%m`
day=`date +%d`

weekday=5
next_weekstartday=3

if [ -z $1 ]; then
    before_offset=0
    after_offset=0
else
    before_offset=$1
    weekday=$((weekday-before_offset))

    if [ -z $2 ]; then
        after_offset=0
    else
        after_offset=$2
        weekday=$((weekday-after_offset))
    fi
fi

weekstart=`date +%m%d -d "$((next_weekstartday + before_offset)) days"`
weekstart_year=`date +%Y -d "$((next_weekstartday + before_offset)) days"`
weekstart_month=`date +%m -d "$((next_weekstartday + before_offset)) days"`
weekend=`date +%m%d -d "$((next_weekstartday + before_offset - after_offset + weekday - 1)) days"`

if [ ! -e ~/memos/$weekstart_year"_"$weekstart_month ]; then
    mkdir ~/memos/$weekstart_year"_"$weekstart_month
fi

cp -n ~/memos/template_weekly.md ~/memos/$weekstart_year"_"$weekstart_month/$weekstart_year"_"$weekstart"-"$weekend".md"