Fix/recommand webhook notification

[pritambiswal]

Problem

The webhook endpoint was treating all incoming data as raw XML. However, Recommand sends a
JSON notification when a document is received:

{
"eventType": "document.received",
"documentId": "doc_01KGC4QAPY9YWVRN03P9TAPV55",
"teamId": "team_01K8N25DE9T5A72FZMPJCBQQJH",
"companyId": "c_01K8N2P5YEMVJXSHRQQP60TSSE"
}

This notification was being saved as the XML content, instead of being used as a trigger to
fetch the actual document.

Solution

The webhook now:

1. Detects Recommand notifications by checking for eventType: "document.received" in JSON
2. Looks up integration settings using teamId (stored as account_id)
3. Fetches actual XML from Recommand API using GET /api/peppol/{teamId}/documents/{documentId}
4. Prevents duplicates by checking EDocument.reference before creating
5. Falls back to raw XML for other providers (B2B Router, direct XML) - preserving existing
   behavior

Backward Compatibility

• Existing webhook URL remains unchanged: /api/method/edocument_integration.api.webhook
• Raw XML webhooks continue to work as before
• Only Recommand JSON notifications trigger the new fetch logic