feat(bridge): MQTT bridge with Home Assistant auto-discovery

2026-05-24 18:52:59 +03:00
parent e99616a135
commit c3837376f5
7 changed files with 282 additions and 0 deletions
@@ -0,0 +1,63 @@
+package bridge
+
+import (
+	"encoding/json"
+	"fmt"
+	"log/slog"
+)
+
+func (b *Bridge) publishDiscovery() {
+	type component struct {
+		Platform     string   `json:"p"`
+		Name         string   `json:"name"`
+		UniqueID     string   `json:"unique_id"`
+		CommandTopic string   `json:"command_topic"`
+		StateTopic   string   `json:"state_topic"`
+		Options      []string `json:"options"`
+	}
+	type payload struct {
+		Device struct {
+			Identifiers  []string `json:"identifiers"`
+			Name         string   `json:"name"`
+			Manufacturer string   `json:"manufacturer"`
+			Model        string   `json:"model"`
+		} `json:"device"`
+		Origin       map[string]string    `json:"origin"`
+		Availability []map[string]string  `json:"availability"`
+		Components   map[string]component `json:"components"`
+	}
+
+	options := make([]string, numInputs)
+	for i := range options {
+		options[i] = inputLabel(i + 1)
+	}
+
+	p := payload{
+		Origin:       map[string]string{"name": "ezcoo-usb-control"},
+		Availability: []map[string]string{{"topic": b.availTopic()}},
+		Components:   make(map[string]component, numOutputs),
+	}
+	p.Device.Identifiers = []string{"ezcoo_mx42has_arc"}
+	p.Device.Name = "EZCOO HDMI Matrix"
+	p.Device.Manufacturer = "EZCOO"
+	p.Device.Model = "EZ-MX42HAS-ARC"
+
+	for out := 1; out <= numOutputs; out++ {
+		p.Components[fmt.Sprintf("out%d", out)] = component{
+			Platform:     "select",
+			Name:         fmt.Sprintf("Output %d", out),
+			UniqueID:     fmt.Sprintf("ezcoo_mx42_out%d", out),
+			CommandTopic: b.cmdTopic(out),
+			StateTopic:   b.stateTopic(out),
+			Options:      options,
+		}
+	}
+
+	data, err := json.Marshal(p)
+	if err != nil {
+		slog.Error("marshal discovery payload", "err", err)
+		return
+	}
+	b.client.Publish(b.discoveryTopic(), 1, true, data)
+	slog.Info("published HA discovery")
+}