From 5a47198e8101e0cd9664e67dee82eca13b2a604d Mon Sep 17 00:00:00 2001
From: Adrian Amaglio <adrian@amaglio.fr>
Date: Thu, 9 Sep 2021 12:24:22 +0200
Subject: [PATCH] first script

---
 main.sh | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100755 main.sh

diff --git a/main.sh b/main.sh
new file mode 100755
index 0000000..915574c
--- /dev/null
+++ b/main.sh
@@ -0,0 +1,57 @@
+#!/bin/sh
+
+VCF_DIR=~/.contacts/contacts
+DELTAD=10
+
+today="$(date '+%Y %m %d')"
+ty="${today:0:4}"
+tm="${today:5:2}"
+td="${today:8:2}"
+now="$(date +%s)"
+
+display=''
+
+for vcf in "$VCF_DIR"/*.vcf ; do
+    bday_raw="$(cat $vcf | grep BDAY)"
+    if [ -z "$bday_raw" ] ; then continue ; fi
+    bday_raw="$(echo $bday_raw | cut -d ':' -f 2)"
+    bday_raw=${bday_raw:0:-1}
+    echo $bday_raw | grep '-' &>/dev/null
+    # format yyyy-mm-dd
+    if [ $? -eq 0 ] ; then
+        year="${bday_raw:0:4}"
+        month="${bday_raw:5:2}"
+        day="${bday_raw:8:2}"
+    # format yyyymmdd
+    elif [ ${#bday_raw} -eq 8 ] ; then
+        year="${bday_raw:0:4}"
+        month="${bday_raw:4:2}"
+        day="${bday_raw:6:2}"
+    # unknown format
+    else
+        echo "Impossible to determine date format for: $bday_raw"
+        continue
+    fi
+
+    # Is the bday after or before today in civil year?
+    # This comparison can make dalta negative. Be careful with next instructions.
+    if [ "$month$day" -lt "$tm$td" ] ; then
+        ((nextbday_year=$ty+1))
+    else
+        nextbday_year=$ty
+    fi
+
+    # How many days to next bday
+    nextbday_stamp=$(date --date="$nextbday_year$month$day" +%s)
+    ((delta_s=$nextbday_stamp-$now))
+    ((delta_d=$delta_s/3600/24))
+    
+    # Get all bdays
+    if [ "$delta_d" -le "$DELTAD" ] ; then
+        name="$(cat $vcf | grep 'FN:' | cut -d ':' -f 2)"
+        display="$display${name:0:-1} : $year-$month-$day\n"
+    fi
+
+done
+# Send notification if date is close
+notify-send "Anniversaires" "$display"