tsk-59: Get MessageEventResponse endpoint (#61)

Closes #59

Reviewed-on: phoenix/textsender-api#61
Co-authored-by: phoenix <kundeng00@pm.me>
Co-committed-by: phoenix <kundeng00@pm.me>

internal/handler/helper_test.go

@@ -2,6 +2,7 @@ package handler
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"os"
 	"path"
@@ -74,3 +75,36 @@ func TestScheduledMessage(id uuid.UUID, userId uuid.UUID, now time.Time) schedul
 func TestScheduledMessageEvent(messageId, contactId, scheduledMessageId uuid.UUID) scheduling.ScheduledMessageEvent {
 	return scheduling.ScheduledMessageEvent{MessageId: messageId, ContactId: contactId, ScheduledMessageId: scheduledMessageId}
 }
+
+func TestMERResponseInString() string {
+	return `{
+  "body": "Whoknows?",
+  "num_segments": "0",
+  "direction": "outbound-api",
+  "from": "+12243026041",
+  "to": "+16303831708",
+  "date_updated": "Sat,29Nov202519:06:59+0000",
+  "uri": "/2010-04-01/Accounts/ACefa1ef516314c9d1a68cbd657de49277/Messages/SM1193a529e7f7a840667cd1e0f13ea95a.json",
+  "account_sid": "ACefa1ef516314c9d1a68cbd657de49277",
+  "num_media": "0",
+  "status": "scheduled",
+  "messaging_service_sid": "MG803f3676706b92eb02e18dd820c447f2",
+  "sid": "SM1193a529e7f7a840667cd1e0f13ea95a",
+  "date_created": "Sat,29Nov202519:06:59+0000",
+  "api_version": "2010-04-01",
+  "subresource_uris": {
+    "media": "/2010-04-01/Accounts/ACefa1ef516314c9d1a68cbd657de49277/Messages/SM1193a529e7f7a840667cd1e0f13ea95a/Media.json"
+  }
+}`
+}
+
+func TestConvertStringToMapOfAny(response string) (map[string]any, error) {
+	bytes := []byte(response)
+	var merResponse map[string]any
+	err := json.Unmarshal(bytes, &merResponse)
+	if err != nil {
+		return nil, err
+	} else {
+		return merResponse, nil
+	}
+}