Plugins: add ifelse plugin (#29988)

plugin/ifelse.go

@@ -0,0 +1,78 @@
+package plugin
+
+import (
+	"context"
+
+	"github.com/evcc-io/evcc/util"
+)
+
+type ifElsePlugin struct {
+	ctx  context.Context
+	i, e Config
+}
+
+func init() {
+	registry.AddCtx("ifelse", NewIfElseFromConfig)
+}
+
+// NewIfElseFromConfig creates ifElse provider
+func NewIfElseFromConfig(ctx context.Context, other map[string]any) (Plugin, error) {
+	var cc struct {
+		I Config `mapstructure:"if"`
+		E Config `mapstructure:"else"`
+	}
+
+	if err := util.DecodeOther(other, &cc); err != nil {
+		return nil, err
+	}
+
+	o := &ifElsePlugin{
+		ctx: ctx,
+		i:   cc.I,
+		e:   cc.E,
+	}
+
+	return o, nil
+}
+
+var _ IntSetter = (*ifElsePlugin)(nil)
+
+func (o *ifElsePlugin) IntSetter(param string) (func(int64) error, error) {
+	ifS, err := o.i.IntSetter(o.ctx, param)
+	if err != nil {
+		return nil, err
+	}
+
+	elseS, err := o.e.IntSetter(o.ctx, param)
+	if err != nil {
+		return nil, err
+	}
+
+	return func(val int64) error {
+		if val > 0 {
+			return ifS(val)
+		}
+		return elseS(val)
+	}, nil
+}
+
+var _ BoolSetter = (*ifElsePlugin)(nil)
+
+func (o *ifElsePlugin) BoolSetter(param string) (func(bool) error, error) {
+	ifS, err := o.i.BoolSetter(o.ctx, param)
+	if err != nil {
+		return nil, err
+	}
+
+	elseS, err := o.e.BoolSetter(o.ctx, param)
+	if err != nil {
+		return nil, err
+	}
+
+	return func(val bool) error {
+		if val {
+			return ifS(val)
+		}
+		return elseS(val)
+	}, nil
+}