Handle settings

model/settings.go

@@ -0,0 +1,54 @@
+package reveil
+
+import (
+	"encoding/json"
+	"os"
+	"time"
+)
+
+// Settings represents the settings panel.
+type Settings struct {
+	Language      string        `json:"language"`
+	GongInterval  time.Duration `json:"gong_interval"`
+	WeatherDelay  time.Duration `json:"weather_delay"`
+	WeatherAction string        `json:"weather_action"`
+}
+
+// ExistsSettings checks if the settings file can by found at the given path.
+func ExistsSettings(settingsPath string) bool {
+	_, err := os.Stat(settingsPath)
+	return !os.IsNotExist(err)
+}
+
+// ReadSettings parses the file at the given location.
+func ReadSettings(path string) (*Settings, error) {
+	var s Settings
+	if fd, err := os.Open(path); err != nil {
+		return nil, err
+	} else {
+		defer fd.Close()
+		jdec := json.NewDecoder(fd)
+
+		if err := jdec.Decode(&s); err != nil {
+			return &s, err
+		}
+
+		return &s, nil
+	}
+}
+
+// SaveSettings saves settings at the given location.
+func SaveSettings(path string, s interface{}) error {
+	if fd, err := os.Create(path); err != nil {
+		return err
+	} else {
+		defer fd.Close()
+		jenc := json.NewEncoder(fd)
+
+		if err := jenc.Encode(s); err != nil {
+			return err
+		}
+
+		return nil
+	}
+}