Garmin inreach API support

garmin.go

@@ -0,0 +1,87 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+)
+
+type garminClient struct {
+	c      *http.Client
+	apiKey string
+}
+
+type garminMessageRequest struct {
+	Messages []garminMessage `json:"messages"`
+}
+
+type garminMessage struct {
+	Recipients []string `json:"recipients"`
+	Sender     string   `json:"sender"`
+	Timestamp  string   `json:"timestamp"`
+	Message    string   `json:"message"`
+}
+
+type garminMessageResponse struct {
+	Count int `json:"count"`
+}
+
+func newGarminClient(apiKey string) *garminClient {
+	return &garminClient{
+		c:      &http.Client{},
+		apiKey: apiKey,
+	}
+}
+
+func (gc *garminClient) sendMessage(imei, sender, msg string) error {
+	buf := &bytes.Buffer{}
+	err := json.NewEncoder(buf).Encode(garminMessageRequest{
+		Messages: []garminMessage{
+			{
+				Recipients: []string{imei},
+				Sender:     sender,
+				Timestamp:  time.Now().Format(time.RFC3339),
+				Message:    msg,
+			},
+		},
+	})
+
+	if err != nil {
+		return err
+	}
+
+	req, err := http.NewRequest("POST", "https://ipcinbound.inreachapp.com/IPC/IPCInboundApi/api/Messaging/Message", buf)
+	if err != nil {
+		return err
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("x-api-key", gc.apiKey)
+
+	resp, err := gc.c.Do(req)
+	if err != nil {
+		return err
+	}
+
+	defer resp.Body.Close()
+	body, _ := io.ReadAll(resp.Body)
+
+	if resp.StatusCode != 200 {
+		return fmt.Errorf("%s", string(body))
+	}
+
+	grResp := garminMessageResponse{}
+	err = json.NewDecoder(resp.Body).Decode(&grResp)
+	if err != nil {
+		return err
+	}
+
+	if grResp.Count != 1 {
+		return fmt.Errorf("expected 1 message, got %d", grResp.Count)
+	}
+
+	return nil
+}