From bbd98d38619a6a37fc1ad13e6a35f9b2beaad243 Mon Sep 17 00:00:00 2001
From: andig <cpuidle@gmx.de>
Date: Sun, 19 Apr 2020 18:23:32 +0200
Subject: [PATCH] Add MeterCurrent interface

---
 api/api.go      |  5 +++++
 charger/go-e.go | 10 ++++++++++
 2 files changed, 15 insertions(+)

diff --git a/api/api.go b/api/api.go
index 8879c4df6..a6e4ab886 100644
--- a/api/api.go
+++ b/api/api.go
@@ -37,6 +37,11 @@ type MeterEnergy interface {
 	TotalEnergy() (float64, error)
 }
 
+// MeterCurrent is able to provide per-line current A
+type MeterCurrent interface {
+	Currents() (float64, float64, float64, error)
+}
+
 // Charger is able to provide current charging status and to enable/disabler charging
 type Charger interface {
 	Status() (ChargeStatus, error)
diff --git a/charger/go-e.go b/charger/go-e.go
index 6f2c7fe03..c9ee37157 100644
--- a/charger/go-e.go
+++ b/charger/go-e.go
@@ -139,3 +139,13 @@ func (c *GoE) ChargedEnergy() (float64, error) {
 	energy := float64(status.Dws) / 3.6e6
 	return energy, err
 }
+
+// Currents implements the MeterCurrent interface
+func (c *GoE) Currents() (float64, float64, float64, error) {
+	var status goeStatusResponse
+	_, err := c.GetJSON(c.apiURL(goeStatus), &status)
+	if len(status.Nrg) == 16 {
+		return float64(status.Nrg[4]) / 10, float64(status.Nrg[5]) / 10, float64(status.Nrg[6]) / 10, nil
+	}
+	return 0, 0, 0, err
+}