From c6da62d0c1d1b646f7d4627f0e8e358199a789e3 Mon Sep 17 00:00:00 2001
From: Gisle Aune <dev@gisle.me>
Date: Thu, 18 Aug 2022 12:58:47 +0200
Subject: [PATCH] add trigger event idea.

---
 bus.go              |  8 ++++++++
 cmd/bustest/main.go | 11 +++++++++++
 events/external.go  | 21 +++++++++++++++++++++
 3 files changed, 40 insertions(+)
 create mode 100644 events/external.go

diff --git a/bus.go b/bus.go
index 5003a92..b7ee0de 100644
--- a/bus.go
+++ b/bus.go
@@ -11,6 +11,14 @@ type Event interface {
 	EventDescription() string
 }
 
+// A TriggerEvent is a catch-all for events that may trigger a command from the event handler.
+type TriggerEvent interface {
+	Event
+
+	TriggerKind() string
+	TriggerValue(key string) (string, bool)
+}
+
 type Command interface {
 	CommandDescription() string
 }
diff --git a/cmd/bustest/main.go b/cmd/bustest/main.go
index ebf96ef..36ecb63 100644
--- a/cmd/bustest/main.go
+++ b/cmd/bustest/main.go
@@ -61,6 +61,17 @@ func main() {
 		SceneID: 7,
 	})
 
+	bus.RunEvent(events.ExternalEvent{
+		Kind: "weather",
+		Values: map[string]string{
+			"city":                "Ørland",
+			"region":              "Trøndelag",
+			"country":             "Norway",
+			"temperature_celsius": "21.00",
+			"precipitation_mm":    "3.21",
+		},
+	})
+
 	time.Sleep(time.Second / 8)
 
 	log.Println("Search \"**:Hexagon {1,5,6}\"")
diff --git a/events/external.go b/events/external.go
new file mode 100644
index 0000000..0fbb0c8
--- /dev/null
+++ b/events/external.go
@@ -0,0 +1,21 @@
+package events
+
+import "fmt"
+
+type ExternalEvent struct {
+	Kind   string
+	Values map[string]string
+}
+
+func (e ExternalEvent) EventDescription() string {
+	return fmt.Sprintf("External(kind:%s, values:%v)", e.Kind, e.Values)
+}
+
+func (e ExternalEvent) TriggerKind() string {
+	return fmt.Sprintf("external.%s", e.Kind)
+}
+
+func (e ExternalEvent) TriggerValue(key string) (string, bool) {
+	v, ok := e.Values[key]
+	return v, ok
+}