#!/bin/bash
# take entry id, and give back related articles
NB_EntryID="$1"
NB_EntryID=${NB_EntryID:1}

CAT=$(grep -l $NB_EntryID /home/miekg/miek.nl/blog/data/cat_*.db)
# Get the last 3 articles and print those
j=0
for i in $CAT; do
    for art in $(tail -3 $i); do
	if [ "$art" != "$NB_EntryID" ]; then
	    [ ! -r /home/miekg/miek.nl/blog/data/$art ] && continue
	    title="$(head -1 /home/miekg/miek.nl/blog/data/$art | sed -re 's/^TITLE: //')"
	    # normalize title, copied from comment.php
	    t=${title// /_}
	    t=$(echo $t | tr '[:upper:]' '[:lower:]')
	    t=$(echo $t | sed -re "s/\.+/_/g")  # kill .
#	    t=${t//./_}    # kill .
	    t=${t//\+/_}    # kill +
	    t=${t//\//}	    # kill slashes
	    t=${t//</}	    # kill <
	    t=${t//\(/}	    # kill (
	    t=${t//>/}	    # kill >
	    t=${t//\)/}	    # kill )
	    # kill quotes
	    t=$(echo $t | sed -re "s/'(.*)'/\1__/")  # kill quotes
	    date=${art:0:10}
	    date=${date//-//}

	    link[$j]="<a href=\"http://www.miek.nl/blog/archives/$date/$t/index.html\">$title</a>"
	    ((j++))
	fi
    done
    break
done
if [[ $j -ne 0 ]]; then
    # we have at least one
    echo "<br/>Related: "
fi

k=0; ((j--))
while [[ $k -lt $j ]]; do
    echo ${link[$k]}","
    ((k++))
done
if [[ -n ${link[$k]} ]]; then
    echo ${link[$k]}
fi