[gnome-weather] WeeklyForecast: choose the forecast closer to 2pm as representative

[Giovanni Campagna <gcampagna src gnome org>]

commit aeccd40d8029f460ad6eac17cdc0163c6b30aaca
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Sat Mar 14 16:04:35 2015 -0700

    WeeklyForecast: choose the forecast closer to 2pm as representative
    
    Instead of the median of whatever the online service gave us.
    2pm chosen because it's usually the hottest moment in the day.

 src/app/weeklyForecast.js |   22 ++++++++++++++++++----
 1 files changed, 18 insertions(+), 4 deletions(-)
---
diff --git a/src/app/weeklyForecast.js b/src/app/weeklyForecast.js
index 7220a09..a1380b6 100644
--- a/src/app/weeklyForecast.js
+++ b/src/app/weeklyForecast.js
@@ -52,6 +52,14 @@ const WeeklyForecastFrame = new Lang.Class({
         let ret = [];
         let i;
 
+        // look for 14:00 of the given day
+        // (14:00 is chosen because usually it's the highest temperature
+        // in the day, so it makes sense as a temperature value)
+        day = GLib.DateTime.new_local(day.get_year(),
+                                      day.get_month(),
+                                      day.get_day_of_month(),
+                                      14, 0, 0);
+
         // First ignore all infos that are on a different
         // older than day.
         // infos are ordered by time, and it's assumed at some point
@@ -71,7 +79,9 @@ const WeeklyForecastFrame = new Lang.Class({
         let infoCount = 0;
         while (i < infos.length && infoCount < 5) {
             let count = 0;
-            let temp = [];
+            let best = null;
+            let diff = 0;
+
             for ( ; i < infos.length; i++) {
                 let info = infos[i];
                 let [ok, date] = info.get_value_update();
@@ -81,10 +91,14 @@ const WeeklyForecastFrame = new Lang.Class({
                                      datetime.get_ymd()))
                     break;
 
-                temp[count++] = info;
+                let v = Math.abs(datetime.difference(day, best));
+                if (best == null || v < diff) {
+                    best = info;
+                    diff = v;
+                }
             }
-            if (count > 0)
-                ret.push(temp[Math.floor(count/2)]);
+            if (best)
+                ret.push(best);
             day = day.add_days(1);
             infoCount++;
         }