Implemented a module that shows exchange rates from exchangeratesapi.io

modules/exchangerates/settings.go

@@ -0,0 +1,46 @@
+// Package exchangerates
+package exchangerates
+
+import (
+	"github.com/olebedev/config"
+	"github.com/wtfutil/wtf/cfg"
+)
+
+const (
+	defaultFocusable = false
+	defaultTitle     = "Exchange rates"
+)
+
+// Settings defines the configuration properties for this module
+type Settings struct {
+	common *cfg.Common
+
+	rates map[string][]string `help:"Defines what currency rates we want to know about`
+}
+
+// NewSettingsFromYAML creates a new settings instance from a YAML config block
+func NewSettingsFromYAML(name string, ymlConfig *config.Config, globalConfig *config.Config) *Settings {
+	settings := Settings{
+		common: cfg.NewCommonSettingsFromModule(name, defaultTitle, defaultFocusable, ymlConfig, globalConfig),
+
+		rates: map[string][]string{},
+	}
+
+	raw := ymlConfig.UMap("rates", map[string]interface{}{})
+	for key, value := range raw {
+		settings.rates[key] = []string{}
+		switch value.(type) {
+		case string:
+			settings.rates[key] = []string{value.(string)}
+		case []interface{}:
+			for _, currency := range value.([]interface{}) {
+				str, ok := currency.(string)
+				if ok {
+					settings.rates[key] = append(settings.rates[key], str)
+				}
+			}
+		}
+	}
+
+	return &settings
+}