From 8ae4be341a5376580caa411ba5f36b6b7bbf932a Mon Sep 17 00:00:00 2001
From: Colin <colin@uninsane.org>
Date: Wed, 8 Mar 2023 02:25:57 +0000
Subject: [PATCH] sane-deadlines: allow specifying the amount of desired notice
 per-deadline

---
 pkgs/sane-scripts/src/sane-deadlines | 29 +++++++++++++++-------------
 1 file changed, 16 insertions(+), 13 deletions(-)

diff --git a/pkgs/sane-scripts/src/sane-deadlines b/pkgs/sane-scripts/src/sane-deadlines
index a17665d6..ccacc770 100755
--- a/pkgs/sane-scripts/src/sane-deadlines
+++ b/pkgs/sane-scripts/src/sane-deadlines
@@ -3,38 +3,41 @@
 # processes a tab-separated "deadlines" file and alerts for any upcoming events.
 #
 # deadlines.tsv file format:
-# - <date>\t<event>
+# - <date>\t<reminder-interval>\t<event>
 # - no header
 # - one line per entry
 # - <event> may contain any non-newline and non-tab characters
+# - <notice-interval> is the number of days before the event to start alerting, followed by 'd', e.g. `14d`
 # - <date> should be lexicographically orderable and machine-parsable, e.g. `2023-03-14`
 #
 # example `deadlines.tsv`
-# 2023-03-14 celebrate pi day!
-# 2023-04-18 taxes due
-# 2023-04-01 the other pie day :o
+# 2023-03-14	1d	celebrate pi day!
+# 2023-04-18	14d	taxes due
+# 2023-04-01	7d	the other pie day :o
 
 # configurables:
 deadlines=~/knowledge/planner/deadlines.tsv
-threshold_in_days=14  # only show events happening within this many days
 
 if ! test -f "$deadlines"; then
         echo "WARNING: $deadlines sane-deadlines file not found"
         exit 1
 fi
 
-today=$(date +%s)
+now=$(date +%s)
 sort "$deadlines" | while read line; do
         # parse line
-        date_field=$(echo "$line" | cut -f 1)
-        event=$(echo "$line" | cut -f 2)
+        deadline_field=$(echo "$line" | cut -f 1)
+        threshold_field=$(echo "$line" | cut -f 2)
+        description_field=$(echo "$line" | cut -f 3)
 
-        # compute temporal distance
-        date=$(date -d "$date_field" +%s)
-        days_until=$(( ($date - $today) / (24*60*60) ))
+        # normalize dates into seconds since unix epoch
+        deadline=$(date -d "$deadline_field" +%s)
+        threshold=$(echo "$threshold_field" | sed 's/d/day /g')
+        birthtime=$(date -d "$deadline_field - ($threshold)" +%s)
 
         # show the event iff it's near
-        if test "$days_until" -lt "$threshold_in_days"; then
-                echo "$days_until days until $event"
+        if test "$now" -ge "$birthtime"; then
+                days_until=$(( ($deadline - $now) / (24*60*60) ))
+                echo "in $days_until day(s): $description_field"
         fi
 done