From b9fc59b5bde345ac7b628c715ce7d5f97ccdac3c Mon Sep 17 00:00:00 2001
From: St33v <github@f3rr3t.com>
Date: Tue, 4 Jan 2022 13:42:08 +1100
Subject: can download and convert when executed manually

---
 README.md                | 22 +++++++++++++++++++++-
 func/deriveTimeString.sh |  4 ++--
 synopticChart.sh         | 15 +++++----------
 3 files changed, 28 insertions(+), 13 deletions(-)

diff --git a/README.md b/README.md
index 9b682c8..5c2a195 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,22 @@
 # bomSynoptic
-Automoated download and display of synoptic weather charts from the Australian Bureau of Meteorology
+Automated download and display of synoptic weather charts from the Australian Bureau of Meteorology
+
+## Background
+(explain motivation and desired results)
+
+## Current state
+Script can download most recent pdf and convert it to a scaled png file
+
+## todo
+   
+   * write a timer service 
+   * 'xdg-open' the png file in its own workspace (in i3 window manager)
+
+
+Files:
+
+File | Description | Location
+-----|-------------|---------
+synopticChart.sh | Top level script |
+func/deriveTimeString.sh | Return 'date + time' portion of latest chart for download
+func/
diff --git a/func/deriveTimeString.sh b/func/deriveTimeString.sh
index 3708265..a09a393 100755
--- a/func/deriveTimeString.sh
+++ b/func/deriveTimeString.sh
@@ -14,9 +14,9 @@
 # This function returns the filename for the most recent chart.
 
 DeriveTime() {
-    nowDate=$(\date -u +%y%m%d)   # backslash req. to unalias date to raw format
+    nowDate=$(\date -u +%Y%m%d)   # backslash req. to unalias date to raw format
     nowTime=$(\date -u +%H%M)     # (I have date aliased to date -R)
-    echo $nowDate$nowTime
+#    echo $nowDate$nowTime
 
     if [ $nowTime -ge 1800 ] ; then
         fileTime=1800
diff --git a/synopticChart.sh b/synopticChart.sh
index 75d2ae2..b18b6e2 100755
--- a/synopticChart.sh
+++ b/synopticChart.sh
@@ -4,23 +4,18 @@
 # See notes about BOM. they don't like scrapers but permit anon FTP
 # for *personal use*
 #  This script will be called froma timer, once every 6 hours, which is 
-# how oftern new charts are published.
+# how often new charts are published.
 #
 # The timer will take care of scheduing the call to the script
 # todo: check what happens with daylight saving...
 
-# Construct current date and time
-# -u for UTC, just get the date portion. 
-datePart=$(date -u +%Y%m%d)
+source func/deriveTimeString.sh
 
-# Now construct the 'time' pertion of the filename.
-# It is always 0000, 0600, 1200, or 1800
+dateTime=$(DeriveTime)
 
-timePart=0000
-currentchart=${datePart}-${timePart}
-latestChart=IDY00030.${datePart}${timePart}.pdf
+latestChart=IDY00030.${dateTime}.pdf
 
 
 curl -o ${latestChart} ftp://ftp.bom.gov.au/anon/gen/fwo/${latestChart}
-convert -density 300 ${latestChart} ${currentchart}.png
+convert -density 300 ${latestChart} ${dateTime}.png
 
-- 
cgit v1.3