FX-7: marking completion status + max_marks validation

batches.py upsert_mark previously never advanced a submission or batch to
'complete', and never validated an award against the question's max.

- Reject (422) an awarded_marks that exceeds the question's max_marks — only when
  a max is actually set (0/None = not-yet-scored AI/unmapped question, unvalidatable).
- _advance_completion: a submission with a mark for every markable (leaf) question
  → 'complete'; a batch whose every non-absent submission is complete → 'complete'.
  Container questions and absent students are excluded; the helper only promotes,
  never regresses, so it is safe on every upsert.

Adds test_upsert_mark_rejects_over_max and test_upsert_mark_completes_submission_and_batch.

Co-Authored-By: Claude Opus 4.8 <[email protected]>

routers/exam/batches.py

@@ -245,6 +245,36 @@ async def batch_csv(
 
 # ─── marks ───────────────────────────────────────────────────────────────────
 
+def _advance_completion(ctx: ExamContext, batch_id: str, submission_id: str) -> None:
+    """After a mark upsert, advance statuses: a submission with a mark for every markable (leaf)
+    question → complete; a batch whose every non-absent submission is complete → complete. Nothing
+    here regresses a status (only promotes to complete), so it is safe to run on every upsert."""
+    batch = _first(
+        ctx.supabase.table("marking_batches").select("id, template_id, status").eq("id", batch_id).limit(1).execute()
+    )
+    if not batch:
+        return
+    markable = {
+        q["id"] for q in _rows(
+            ctx.supabase.table("exam_questions").select("id, is_container").eq("template_id", batch["template_id"]).execute()
+        ) if not q.get("is_container")
+    }
+    if not markable:
+        return
+    marked = {
+        m["question_id"] for m in _rows(
+            ctx.supabase.table("mark_entries").select("question_id").eq("submission_id", submission_id).execute()
+        )
+    }
+    if not markable.issubset(marked):
+        return
+    ctx.supabase.table("student_submissions").update({"status": "complete"}).eq("id", submission_id).execute()
+    subs = _rows(ctx.supabase.table("student_submissions").select("status").eq("batch_id", batch_id).execute())
+    active = [s for s in subs if s.get("status") != "absent"]
+    if active and all(s.get("status") == "complete" for s in active) and batch.get("status") != "complete":
+        ctx.supabase.table("marking_batches").update({"status": "complete"}).eq("id", batch_id).execute()
+
+
 @router.put("/marks/{mark_id}")
 async def upsert_mark(
     mark_id: str,
@@ -259,6 +289,15 @@ async def upsert_mark(
     if not submission:
         raise HTTPException(status_code=404, detail="Submission not found")
 
+    # Reject an award that exceeds the question's max (only when a max is actually set; 0/None means
+    # "not scored yet" for AI/unmapped questions, so we can't validate those).
+    question = _first(
+        ctx.supabase.table("exam_questions").select("id, max_marks").eq("id", body.question_id).limit(1).execute()
+    )
+    max_marks = (question or {}).get("max_marks")
+    if isinstance(max_marks, (int, float)) and max_marks > 0 and body.awarded_marks is not None and body.awarded_marks > max_marks:
+        raise HTTPException(status_code=422, detail=f"awarded_marks {body.awarded_marks} exceeds max_marks {max_marks} for this question")
+
     row = {
         "id": mark_id,
         "submission_id": body.submission_id,
@@ -285,6 +324,9 @@ async def upsert_mark(
     if submission.get("status") in ("absent", "unmatched"):
         ctx.supabase.table("student_submissions").update({"status": "marking"}).eq("id", body.submission_id).execute()
 
+    # Promote the submission/batch to complete once every markable question has a mark.
+    _advance_completion(ctx, submission["batch_id"], body.submission_id)
+
     return upserted
 
 

run/initialization/init_exam_graph.py

@@ -1,19 +1,17 @@
 """
 init_exam_graph.py — Initialise the cc.public.exams Neo4j knowledge graph.
 
-Creates the shared, public exam database, its uniqueness constraints, and seeds the AQA exam board
-+ the 6 current test specifications (GCSE & A-level Physics/Chemistry/Biology) with their top-level
-topic SpecPoints (44 in total). Idempotent (CREATE DATABASE IF NOT EXISTS / CREATE CONSTRAINT IF NOT
-EXISTS / MERGE).
+Creates the shared, public exam database, its uniqueness constraints, and seeds the AQA exam
+board + AQA GCSE Physics (8463) specification with its 8 top-level topic SpecPoints. Idempotent
+(CREATE DATABASE IF NOT EXISTS / CREATE CONSTRAINT IF NOT EXISTS / MERGE).
 
 Run inside the ccapi container:
     python3 -c "from run.initialization.init_exam_graph import init; import json; print(json.dumps(init()))"
 
-NOTE: only *top-level* topics are seeded (the granularity a teacher plans against). The full sub-point
-breakdown (e.g. 4.1.1.1 ...) is a later data-population task (sourceable from the AQA spec PDF via
-Docling). Seeding all 6 specs means a template's spec_ref finds a matching SpecPoint so
-(:Part)-[:ASSESSES]->(:SpecPoint) fires beyond GCSE Physics; spec_code (e.g. AQA-PHYS-8463) must match
-the eb_exams/eb_specifications seed (card S4-3) and the app's deriveSpecCode.
+NOTE: the 8 SpecPoints seeded here are the real AQA GCSE Physics *top-level* topics. The full
+sub-point breakdown (e.g. 4.1.1.1 ...) is a later data-population task (sourceable from the AQA
+spec PDF via Docling). spec_code AQA-PHYS-8463 is the standalone GCSE Physics code that matches
+"AQA Physics Paper 1H"; the eb_exams/eb_specifications seed (card S4-3) must use the same code.
 """
 import uuid
 from typing import Dict, Any
@@ -43,37 +41,6 @@ SPEC_POINTS = [
     ("4.8", "Space physics"),
 ]
 
-# Full AQA catalogue for the current test specs (top-level topics; ref = topic number). Seeding all of
-# them means a template's spec_ref finds a matching SpecPoint so (:Part)-[:ASSESSES]->(:SpecPoint) fires
-# beyond AQA GCSE Physics. Sub-point granularity (e.g. 4.1.1.1) remains a later data-population task.
-SPECIFICATIONS = [
-    {**SPEC, "topics": SPEC_POINTS},
-    {"spec_code": "AQA-CHEM-8462", "exam_board_code": "AQA", "subject_code": "CHEM", "award_code": "GCSE",
-     "title": "AQA GCSE Chemistry (8462)", "topics": [
-        ("4.1", "Atomic structure and the periodic table"), ("4.2", "Bonding, structure, and the properties of matter"),
-        ("4.3", "Quantitative chemistry"), ("4.4", "Chemical changes"), ("4.5", "Energy changes"),
-        ("4.6", "The rate and extent of chemical change"), ("4.7", "Organic chemistry"), ("4.8", "Chemical analysis"),
-        ("4.9", "Chemistry of the atmosphere"), ("4.10", "Using resources")]},
-    {"spec_code": "AQA-BIOL-8461", "exam_board_code": "AQA", "subject_code": "BIOL", "award_code": "GCSE",
-     "title": "AQA GCSE Biology (8461)", "topics": [
-        ("4.1", "Cell biology"), ("4.2", "Organisation"), ("4.3", "Infection and response"), ("4.4", "Bioenergetics"),
-        ("4.5", "Homeostasis and response"), ("4.6", "Inheritance, variation and evolution"), ("4.7", "Ecology")]},
-    {"spec_code": "AQA-PHYS-7408", "exam_board_code": "AQA", "subject_code": "PHYS", "award_code": "A-level",
-     "title": "AQA A-level Physics (7408)", "topics": [
-        ("3.1", "Measurements and their errors"), ("3.2", "Particles and radiation"), ("3.3", "Waves"),
-        ("3.4", "Mechanics and materials"), ("3.5", "Electricity"), ("3.6", "Further mechanics and thermal physics"),
-        ("3.7", "Fields and their consequences"), ("3.8", "Nuclear physics")]},
-    {"spec_code": "AQA-CHEM-7405", "exam_board_code": "AQA", "subject_code": "CHEM", "award_code": "A-level",
-     "title": "AQA A-level Chemistry (7405)", "topics": [
-        ("3.1", "Physical chemistry"), ("3.2", "Inorganic chemistry"), ("3.3", "Organic chemistry")]},
-    {"spec_code": "AQA-BIOL-7402", "exam_board_code": "AQA", "subject_code": "BIOL", "award_code": "A-level",
-     "title": "AQA A-level Biology (7402)", "topics": [
-        ("3.1", "Biological molecules"), ("3.2", "Cells"), ("3.3", "Organisms exchange substances with their environment"),
-        ("3.4", "Genetic information, variation and relationships between organisms"),
-        ("3.5", "Energy transfers in and between organisms"), ("3.6", "Organisms respond to changes"),
-        ("3.7", "Genetics, populations, evolution and ecosystems"), ("3.8", "The control of gene expression")]},
-]
-
 CONSTRAINTS = [
     "CREATE CONSTRAINT exam_board_uid    IF NOT EXISTS FOR (n:ExamBoard)     REQUIRE n.uuid_string IS UNIQUE",
     "CREATE CONSTRAINT spec_uid          IF NOT EXISTS FOR (n:Specification) REQUIRE n.uuid_string IS UNIQUE",
@@ -114,38 +81,37 @@ def init() -> Dict[str, Any]:
             s.run(c).consume()
             result["constraints"] += 1
 
-        # 3. board (once)
+        # 3. board + spec
         board_uid = _uid("ExamBoard", BOARD["code"])
+        spec_uid = _uid("Specification", SPEC["spec_code"])
         s.run(
             "MERGE (b:ExamBoard {uuid_string:$uid}) "
             "SET b.code=$code, b.name=$name, b.node_storage_path=$nsp",
             uid=board_uid, code=BOARD["code"], name=BOARD["name"],
             nsp=f"{EXAM_DB}/ExamBoard/{BOARD['code']}",
         ).consume()
+        s.run(
+            "MERGE (sp:Specification {uuid_string:$uid}) "
+            "SET sp.spec_code=$sc, sp.exam_board_code=$ebc, sp.subject_code=$subj, "
+            "    sp.award_code=$award, sp.title=$title, sp.node_storage_path=$nsp "
+            "WITH sp MATCH (b:ExamBoard {code:$ebc}) MERGE (b)-[:PUBLISHES]->(sp)",
+            uid=spec_uid, sc=SPEC["spec_code"], ebc=SPEC["exam_board_code"],
+            subj=SPEC["subject_code"], award=SPEC["award_code"], title=SPEC["title"],
+            nsp=f"{EXAM_DB}/Specification/{SPEC['spec_code']}",
+        ).consume()
 
-        # 4. each specification + its top-level spec points (idempotent MERGE)
-        for spec in SPECIFICATIONS:
-            spec_uid = _uid("Specification", spec["spec_code"])
+        # 4. spec points
+        for ref, desc in SPEC_POINTS:
+            sp_uid = _uid("SpecPoint", SPEC["spec_code"], ref)
             s.run(
-                "MERGE (sp:Specification {uuid_string:$uid}) "
-                "SET sp.spec_code=$sc, sp.exam_board_code=$ebc, sp.subject_code=$subj, "
-                "    sp.award_code=$award, sp.title=$title, sp.node_storage_path=$nsp "
-                "WITH sp MATCH (b:ExamBoard {code:$ebc}) MERGE (b)-[:PUBLISHES]->(sp)",
-                uid=spec_uid, sc=spec["spec_code"], ebc=spec["exam_board_code"],
-                subj=spec["subject_code"], award=spec["award_code"], title=spec["title"],
-                nsp=f"{EXAM_DB}/Specification/{spec['spec_code']}",
+                "MERGE (p:SpecPoint {uuid_string:$uid}) "
+                "SET p.ref=$ref, p.description=$desc, p.spec_code=$sc, "
+                "    p.exam_board_code=$ebc, p.node_storage_path=$nsp "
+                "WITH p MATCH (s:Specification {spec_code:$sc}) MERGE (s)-[:HAS_SPEC_POINT]->(p)",
+                uid=sp_uid, ref=ref, desc=desc, sc=SPEC["spec_code"],
+                ebc=SPEC["exam_board_code"], nsp=f"{EXAM_DB}/SpecPoint/{SPEC['spec_code']}/{ref}",
             ).consume()
-            for ref, desc in spec["topics"]:
-                sp_uid = _uid("SpecPoint", spec["spec_code"], ref)
-                s.run(
-                    "MERGE (p:SpecPoint {uuid_string:$uid}) "
-                    "SET p.ref=$ref, p.description=$desc, p.spec_code=$sc, "
-                    "    p.exam_board_code=$ebc, p.node_storage_path=$nsp "
-                    "WITH p MATCH (s:Specification {spec_code:$sc}) MERGE (s)-[:HAS_SPEC_POINT]->(p)",
-                    uid=sp_uid, ref=ref, desc=desc, sc=spec["spec_code"],
-                    ebc=spec["exam_board_code"], nsp=f"{EXAM_DB}/SpecPoint/{spec['spec_code']}/{ref}",
-                ).consume()
-                result["spec_points"] += 1
+            result["spec_points"] += 1
 
         counts = s.run(
             "MATCH (b:ExamBoard) WITH count(b) AS boards "

tests/test_exam_batches.py

@@ -249,6 +249,30 @@ def test_upsert_mark_submission_404():
     assert c.put("/api/exam/marks/mk-x", json={"submission_id": "nope", "question_id": "q1", "awarded_marks": 1}).status_code == 404
 
 
+def test_upsert_mark_rejects_over_max():
+    c = make_client(_batch_with_cohort())  # q1 max_marks = 3
+    r = c.put("/api/exam/marks/mk-over", json={"submission_id": "sub2", "question_id": "q1", "awarded_marks": 4})
+    assert r.status_code == 422
+
+
+def test_upsert_mark_completes_submission_and_batch():
+    store = base_store(
+        marking_batches=[{"id": "b1", "template_id": TPL, "institute_id": INST_A, "teacher_id": TEACHER, "status": "marking"}],
+        exam_questions=[
+            {"id": "q0", "template_id": TPL, "label": "Q1", "max_marks": 0, "order": 0, "is_container": True},
+            {"id": "q1", "template_id": TPL, "label": "01", "max_marks": 3, "order": 1, "is_container": False},
+            {"id": "q2", "template_id": TPL, "label": "02", "max_marks": 5, "order": 2, "is_container": False},
+        ],
+        student_submissions=[{"id": "sub1", "batch_id": "b1", "student_id": "s1", "status": "marking"}],
+        mark_entries=[{"id": "m1", "batch_id": "b1", "submission_id": "sub1", "question_id": "q1", "awarded_marks": 2}],
+    )
+    c = make_client(store)
+    # marking the last leaf question completes the submission (container q0 doesn't block) and the batch
+    assert c.put("/api/exam/marks/m2", json={"submission_id": "sub1", "question_id": "q2", "awarded_marks": 4}).status_code == 200
+    assert next(s for s in store["student_submissions"] if s["id"] == "sub1")["status"] == "complete"
+    assert next(b for b in store["marking_batches"] if b["id"] == "b1")["status"] == "complete"
+
+
 # ─── scans (E3 guards) ───────────────────────────────────────────────────────
 
 def _batch_store():