fix: handle JSON body push format from Jimi integration API

Jimi's integration push API (tracksolidprodocs.jimicloud.com) sends
Content-Type: application/json with body {"token":"...","data_list":[...]},
not form-encoded. FastAPI Form() silently defaulted to "" so all pushes
were discarded with "Failed to parse data_list:" warnings.

Replaces per-endpoint Form() params with a shared _parse_request() helper
that tries JSON body first, falls back to form-encoded. All seven push
endpoints (pushobd, pushfaultinfo, pushalarm, pushgps, pushhb,
pushtripreport, pushevent) updated.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

webhook_receiver_rev.py

@@ -41,7 +41,7 @@ from typing import Optional
 # monopolising a worker or blowing the DB pool. Jimi normally sends ≤ 200.
 MAX_ITEMS_PER_POST = int(os.getenv("WEBHOOK_MAX_ITEMS", "5000"))
 
-from fastapi import FastAPI, Form, HTTPException
+from fastapi import FastAPI, HTTPException, Request
 from fastapi.responses import JSONResponse
 from psycopg2.extras import execute_values
 
@@ -86,7 +86,7 @@ def _validate_token(token: str) -> None:
 
 
 def _parse_data_list(raw: str) -> list[dict]:
-    """Parse the JSON string from Jimi's data_list form field."""
+    """Parse a JSON string into a list of dicts. raw may be a JSON array or single object."""
     try:
         parsed = json.loads(raw)
         items = parsed if isinstance(parsed, list) else [parsed]
@@ -96,10 +96,59 @@ def _parse_data_list(raw: str) -> list[dict]:
             items = items[:MAX_ITEMS_PER_POST]
         return items
     except (json.JSONDecodeError, TypeError):
-        log.warning("Failed to parse data_list: %.200s", raw)
         return []
 
 
+async def _parse_request(request: Request) -> tuple[str, list[dict]]:
+    """Extract token + data_list from either a JSON body or form-encoded body.
+
+    Jimi's integration push API sends:
+      Content-Type: application/json
+      Body: {"token": "...", "data_list": [{...}, ...]}
+
+    Some older/configured endpoints may still use form-encoded. This helper
+    handles both so each endpoint doesn't need to know which format arrived.
+    """
+    content_type = request.headers.get("content-type", "")
+    body = await request.body()
+
+    if not body:
+        log.debug("push: empty request body")
+        return "", []
+
+    # ── Try JSON body first (integration push format) ──────────────────────────
+    if "application/json" in content_type or body.lstrip()[:1] == b"{":
+        try:
+            payload = json.loads(body)
+            token = str(payload.get("token", ""))
+            raw_dl = payload.get("data_list", [])
+            if isinstance(raw_dl, list):
+                items = raw_dl[:MAX_ITEMS_PER_POST]
+            elif isinstance(raw_dl, str):
+                items = _parse_data_list(raw_dl)
+            else:
+                items = []
+            log.debug("push: parsed JSON body — %d items", len(items))
+            return token, items
+        except (json.JSONDecodeError, TypeError):
+            log.warning("push: JSON body parse failed — body: %.200s",
+                        body.decode("utf-8", errors="replace"))
+
+    # ── Fall back to form-encoded ───────────────────────────────────────────────
+    try:
+        form = await request.form()
+        token = str(form.get("token", ""))
+        raw_dl = str(form.get("data_list", ""))
+        items = _parse_data_list(raw_dl) if raw_dl else []
+        log.debug("push: parsed form body — %d items", len(items))
+        return token, items
+    except Exception:
+        log.warning("push: form body parse failed — body: %.200s",
+                    body.decode("utf-8", errors="replace"), exc_info=True)
+
+    return "", []
+
+
 def unix_to_ts(v) -> Optional[str]:
     """Convert Unix timestamp (seconds or milliseconds) to ISO string."""
     if v is None:
@@ -145,9 +194,9 @@ def health():
 # ── 1. OBD Diagnostics (Priority 1) ──────────────────────────────────────────
 
 @app.post("/pushobd")
-def push_obd(token: str = Form(""), data_list: str = Form("")):
+async def push_obd(request: Request):
+    token, items = await _parse_request(request)
     _validate_token(token)
-    items = _parse_data_list(data_list)
     if not items:
         return JSONResponse(content=SUCCESS)
 
@@ -216,9 +265,9 @@ def push_obd(token: str = Form(""), data_list: str = Form("")):
 # ── 2. DTC Fault Codes (Priority 1) ──────────────────────────────────────────
 
 @app.post("/pushfaultinfo")
-def push_fault_info(token: str = Form(""), data_list: str = Form("")):
+async def push_fault_info(request: Request):
+    token, items = await _parse_request(request)
     _validate_token(token)
-    items = _parse_data_list(data_list)
     if not items:
         return JSONResponse(content=SUCCESS)
 
@@ -286,9 +335,9 @@ def push_fault_info(token: str = Form(""), data_list: str = Form("")):
 # ── 3. Alarm Events (Priority 2) ─────────────────────────────────────────────
 
 @app.post("/pushalarm")
-def push_alarm(token: str = Form(""), data_list: str = Form("")):
+async def push_alarm(request: Request):
+    token, items = await _parse_request(request)
     _validate_token(token)
-    items = _parse_data_list(data_list)
     if not items:
         return JSONResponse(content=SUCCESS)
 
@@ -343,9 +392,9 @@ def push_alarm(token: str = Form(""), data_list: str = Form("")):
 # ── 4. GPS Positions (Priority 2) ────────────────────────────────────────────
 
 @app.post("/pushgps")
-def push_gps(token: str = Form(""), data_list: str = Form("")):
+async def push_gps(request: Request):
+    token, items = await _parse_request(request)
     _validate_token(token)
-    items = _parse_data_list(data_list)
     if not items:
         return JSONResponse(content=SUCCESS)
 
@@ -407,9 +456,9 @@ def push_gps(token: str = Form(""), data_list: str = Form("")):
 # ── 5. Device Heartbeats (Priority 2) ────────────────────────────────────────
 
 @app.post("/pushhb")
-def push_heartbeat(token: str = Form(""), data_list: str = Form("")):
+async def push_heartbeat(request: Request):
+    token, items = await _parse_request(request)
     _validate_token(token)
-    items = _parse_data_list(data_list)
     if not items:
         return JSONResponse(content=SUCCESS)
 
@@ -456,9 +505,9 @@ def push_heartbeat(token: str = Form(""), data_list: str = Form("")):
 # ── 6. Trip Reports (Priority 2) ─────────────────────────────────────────────
 
 @app.post("/pushtripreport")
-def push_trip_report(token: str = Form(""), data_list: str = Form("")):
+async def push_trip_report(request: Request):
+    token, items = await _parse_request(request)
     _validate_token(token)
-    items = _parse_data_list(data_list)
     if not items:
         return JSONResponse(content=SUCCESS)
 
@@ -531,9 +580,9 @@ def push_trip_report(token: str = Form(""), data_list: str = Form("")):
 # ── 7. Device Events (LOGIN / LOGOUT) ────────────────────────────────────────
 
 @app.post("/pushevent")
-def push_event(token: str = Form(""), data_list: str = Form("")):
+async def push_event(request: Request):
+    token, items = await _parse_request(request)
     _validate_token(token)
-    items = _parse_data_list(data_list)
     if not items:
         return JSONResponse(content=SUCCESS)