dotfiles/.bin/OLD/fixme_termine.sh

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#!/bin/sh
# CHECK PARAMETER
usage() { printf '%s\n' "Usage: fixme_termine.sh <JAHR>"; exit 2; }
[ -z $1 ] && usage
YEAR=$1
# ENFORCE DATE FORMAT
LC_TIME=en_US
export LC_TIME
SYSTEM="$(uname)"
# GET LIST OF PUBLIC HOLIDAYS IN "YYYY-MM-DD" FORMAT.
LIST="$(curl -s "https://feiertage-api.de/api/?jahr=$YEAR" \
| json2tsv | grep -E '^\.BW.*datum' \
| awk -F'\t' '{ printf("%s",$3"|"); split($1,a,"."); printf("%s.%s\n",a[3],a[4]); }' \
| sed 's/\.datum//g')"
find_friday() {
local YMD="$1"
[ "$SYSTEM" = "Linux" ] && \
DATE=$(date -d "$YMD" +"%a %d.%m.%Y" | grep Fri)
[ "$SYSTEM" = "OpenBSD" ] && \
DATE=$(date -jf "%Y-%m-%d" +"%a %d.%m.%Y" "$YMD" | grep Fri)
[ "$DATE" != "" ] && printf "1" || printf "0";
}
# LOOP AT MONTHS
for MONTH in 1 2 3 4 5 6 7 8 9 10 11 12;
do
# THERE IS A FRIDAY IN THE FIRST 7 DAYS OF A MONTH
DAY=1
while [ $DAY -le 7 ];
do
# ADD LEADING ZEROS
YMD=$(printf '%s-%02.0f-%02.0f' "$YEAR" "$MONTH" "$DAY")
# IS THIS DAY A FRIDAY?
if [ "$(find_friday $YMD)" -eq "1" ]; then
# CHECK IF THIS FRIDAY IS A HOLIDY
if printf "$LIST" | grep -q "$YMD"; then
# FIND HOLIDAY REASON
HOLIDAY="$(printf '%s' "$LIST" | grep "$YMD" | cut -d'|' -f2-)"
# PRINT AND SUGGEST DAY+7
printf '%02.0f.%02.0f.%s' "$DAY" "$MONTH" "$YEAR"
printf '%s' " < $HOLIDAY, verschieben auf "
printf '%02.0f.%02.0f.%s?\n' "$(($DAY+7))" "$MONTH" "$YEAR"
break
else
# NO HOLIDAY, PRINT
printf '%02.0f.%02.0f.%s\n' "$DAY" "$MONTH" "$YEAR"
fi
break
fi
DAY=$(($DAY+1))
done
done