Add settings and implement auto default

food.ddl

@@ -148,4 +148,9 @@ set per100 = coalesce(
 where rowid = new .rowid;
 end;
 
+create table settings(
+	key text not null primary key,
+	value text not null
+);
+
 commit;

settingsservice.go

@@ -13,10 +13,19 @@ type (
 )
 
 type settings struct {
-    FoodDaysLookback             string
+	FoodDaysLookback           int
-    FoodAggregatedDaysLookback   string
+	FoodAggregatedDaysLookback int
-    WeightDaysLookback           string
+	FoodDailyLookback          int
-    WeightAggregatedDaysLookback string
+	FoodWeeklyLookback         int
+	FoodMonthlyLookback        int
+	FoodYearlyLookback         int
+
+	WeightDaysLookback           int
+	WeightAggregatedDaysLookback int
+    WeightDailyLookback          int
+    WeightWeeklyLookback         int
+    WeightMonthlyLookback        int
+    WeightYearlyLookback         int
 }
 
 var Settings settings
@@ -33,14 +42,18 @@ func (s *SettingsService) LoadSettings() error {
 		field := settingsType.Field(i)
 		key := field.Name
 
-        var value string
+		var value int
 		err := s.db.readConn.QueryRow("SELECT value FROM settings WHERE key = ?", key).Scan(&value)
 		if err != nil {
-            log.Printf("error getting setting for key %s: %v", key, err)
+			log.Printf("error getting setting for key %s: %v; setting default", key, err)
+            _, err := s.db.writeConn.Exec("INSERT INTO settings (key, value) VALUES (?, ?)", key, field.Tag.Get("default"))
+            if err != nil {
+                log.Printf("error inserting setting for key %s: %v", key, err)
                 continue
+            }
 		}
 
-        settingsValue.Field(i).SetString(value)
+		settingsValue.Field(i).SetInt(int64(value))
 		log.Println(key, value)
 	}
 	return nil