From 4a8d06f7ae982fd8d694c34b2383e6ae0a54d3e4 Mon Sep 17 00:00:00 2001
From: Yaroslav <contact@yaroslavps.com>
Date: Thu, 2 Apr 2020 15:56:12 +0300
Subject: weather bar module improvements

---
 dotfiles/.config/waybar/config |  2 +-
 dotfiles/.local/bin/barweather | 35 ++++++++++++++++++++++++++++-------
 2 files changed, 29 insertions(+), 8 deletions(-)

diff --git a/dotfiles/.config/waybar/config b/dotfiles/.config/waybar/config
index 5e5b800..7ec4d73 100644
--- a/dotfiles/.config/waybar/config
+++ b/dotfiles/.config/waybar/config
@@ -176,7 +176,7 @@
     },
     "custom/weather": {
         "format": "{}",
-        "interval": 900,
+        "interval": 180,
         "exec": "barweather"
     },
     "custom/swaykbd": {
diff --git a/dotfiles/.local/bin/barweather b/dotfiles/.local/bin/barweather
index 0ae6d3c..da8f25f 100755
--- a/dotfiles/.local/bin/barweather
+++ b/dotfiles/.local/bin/barweather
@@ -1,18 +1,39 @@
-#!/bin/bash
+#!/bin/sh
 
+cachefile="$HOME/.cache/weather"
 location="Saint Petersburg"
+update_freq=1800
+obsolete_after=10800
 
-if [[ "$location" != "" ]]
-then
+if [ -n "$location" ]; then
     location="~${location// /+}"
 fi
 
-forecast=$(curl -s wttr.in/$location?format=1)
+update_forecast() {
+  ping -q -c 1 1.1.1.1 >/dev/null || exit
+  forecast=$(curl -s wttr.in/"$location"?format=1)
+  if [ ${#forecast} -lt 30 ]; then
+    printf "%s\n" "$forecast" > "$cachefile"
+  fi
+}
 
-if [[ ${#forecast} -gt 30 ]]
-then
+if [ -f "$cachefile" ]; then
+  last_modif=$(date +%s -r "$cachefile")
+  current_secs=$(date +%s)
+  elapsed=$((current_secs - last_modif))
+  if [ $elapsed -gt $obsolete_after ]; then
+    rm "$cachefile"
+  fi
+  if [ $elapsed -gt $update_freq ]; then
+    update_forecast
+  fi
+else
+  update_forecast
+fi
+
+if [ ! -f "$cachefile" ]; then
     exit
 fi
 
-echo $forecast
+cat "$cachefile"
 
-- 
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