import uuid

from app.core.config import get_settings


def _callback_headers(event_id: str, token: str | None = None):
    settings = get_settings()
    return {
        "Idempotency-Key": event_id,
        "X-Service-Token": token if token is not None else settings.n8n_callback_token,
    }


def test_callback_rejects_wrong_service_token(client):
    response = client.post(
        "/api/v1/integrations/n8n/return-callback",
        json={"follow_up": "cleaning"},
        headers=_callback_headers(str(uuid.uuid4()), token="wrong-token"),
    )
    assert response.status_code == 401


def test_callback_unknown_event_returns_404(client):
    response = client.post(
        "/api/v1/integrations/n8n/return-callback",
        json={"follow_up": "cleaning"},
        headers=_callback_headers(str(uuid.uuid4())),
    )
    assert response.status_code == 404


def test_callback_is_idempotent_by_event_id(client, ops_client):
    from sqlalchemy import select

    from app.core.db import SessionLocal
    from app.models.booking import Booking
    from app.models.outbox import OutboxEvent

    db = SessionLocal()
    try:
        booking = db.scalar(select(Booking).limit(1))
        event = OutboxEvent(
            event_id=uuid.uuid4(),
            event_type="vehicle.returned.v1",
            aggregate_type="booking",
            aggregate_id=booking.id,
            payload_json={
                "correlation_id": str(uuid.uuid4()),
                "aggregate": {
                    "type": "booking",
                    "id": str(booking.id),
                    "public_ref": booking.public_ref,
                },
                "data": {},
                "aggregate_ref": booking.public_ref,
            },
            occurred_at=db.execute(select(Booking.starts_at).limit(1)).scalar(),
            delivery_status="delivering",
            attempts=1,
        )
        db.add(event)
        db.commit()
        event_id = str(event.event_id)
    finally:
        db.close()

    first = client.post(
        "/api/v1/integrations/n8n/return-callback",
        json={"follow_up": "cleaning", "summary": "test"},
        headers=_callback_headers(event_id),
    )
    second = client.post(
        "/api/v1/integrations/n8n/return-callback",
        json={"follow_up": "cleaning", "summary": "test"},
        headers=_callback_headers(event_id),
    )
    assert first.status_code == 200
    assert second.status_code == 200

    audit_events = ops_client.get(
        "/api/v1/audit", params={"action": "n8n_return_followup_recorded"}
    ).json()
    matching = [e for e in audit_events if e["metadata"]["event_id"] == event_id]
    assert len(matching) == 1


def test_scheduled_scan_rejects_wrong_service_token(client):
    response = client.post(
        "/api/v1/integrations/n8n/scheduled-scan",
        headers={"X-Service-Token": "wrong-token"},
    )
    assert response.status_code == 401


def test_scheduled_scan_requires_service_token_header(client):
    response = client.post("/api/v1/integrations/n8n/scheduled-scan")
    assert response.status_code == 422


def test_scheduled_scan_runs_and_returns_counts_by_rule(client, ops_client):
    settings = get_settings()
    response = client.post(
        "/api/v1/integrations/n8n/scheduled-scan",
        headers={"X-Service-Token": settings.n8n_callback_token},
    )
    assert response.status_code == 200
    assert response.json() == {"created": {}}  # already-seeded conditions, nothing new

    audit_events = ops_client.get(
        "/api/v1/audit", params={"action": "data_quality_scan_run"}
    ).json()
    service_triggered = [e for e in audit_events if e["actor_type"] == "service"]
    assert len(service_triggered) >= 1
    assert service_triggered[0]["actor_label"] == "n8n scheduled scan"


def test_scheduled_scan_is_idempotent_across_repeated_triggers(client):
    settings = get_settings()
    headers = {"X-Service-Token": settings.n8n_callback_token}
    first = client.post("/api/v1/integrations/n8n/scheduled-scan", headers=headers)
    second = client.post("/api/v1/integrations/n8n/scheduled-scan", headers=headers)
    assert first.status_code == 200
    assert second.status_code == 200
    assert second.json()["created"] == {}


def _workflow_error_body(execution_id: str, **overrides):
    body = {
        "workflow_id": "mobilityops-return-processing",
        "workflow_name": "Fleet Ops — Vehicle Return Orchestration",
        "execution_id": execution_id,
        "failed_at": "2026-08-04T10:15:00Z",
        "error_category": "httpError",
        "error_summary": "Callback request failed with status 500",
        "trigger_context": "webhook",
        "correlation_id": None,
        "attempt": 1,
        "retry_action": "n8n will retry automatically",
    }
    body.update(overrides)
    return body


def test_workflow_error_rejects_wrong_service_token(client):
    response = client.post(
        "/api/v1/integrations/n8n/workflow-error",
        json=_workflow_error_body(str(uuid.uuid4())),
        headers={"X-Service-Token": "wrong-token"},
    )
    assert response.status_code == 401


def test_workflow_error_rejects_unknown_category(client):
    settings = get_settings()
    response = client.post(
        "/api/v1/integrations/n8n/workflow-error",
        json=_workflow_error_body(str(uuid.uuid4()), error_category="somethingElse"),
        headers={"X-Service-Token": settings.n8n_callback_token},
    )
    assert response.status_code == 422


def test_workflow_error_registers_and_is_idempotent_by_execution_id(client, ops_client):
    settings = get_settings()
    headers = {"X-Service-Token": settings.n8n_callback_token}
    execution_id = str(uuid.uuid4())
    body = _workflow_error_body(execution_id)

    first = client.post("/api/v1/integrations/n8n/workflow-error", json=body, headers=headers)
    second = client.post("/api/v1/integrations/n8n/workflow-error", json=body, headers=headers)

    assert first.status_code == 200
    assert first.json()["status"] == "registered"
    assert second.status_code == 200
    assert second.json()["status"] == "already_registered"

    audit_events = ops_client.get(
        "/api/v1/audit", params={"action": "n8n_workflow_failure_registered"}
    ).json()
    matching = [e for e in audit_events if e["metadata"]["execution_id"] == execution_id]
    assert len(matching) == 1
    assert matching[0]["after"]["error_category"] == "httpError"
    assert matching[0]["after"]["retry_action"] == "n8n will retry automatically"


def test_workflow_error_bounds_summary_length(client):
    settings = get_settings()
    response = client.post(
        "/api/v1/integrations/n8n/workflow-error",
        json=_workflow_error_body(str(uuid.uuid4()), error_summary="x" * 501),
        headers={"X-Service-Token": settings.n8n_callback_token},
    )
    assert response.status_code == 422


def test_procedures_rejects_wrong_service_token(client):
    response = client.get(
        "/api/v1/integrations/n8n/procedures", headers={"X-Service-Token": "wrong-token"}
    )
    assert response.status_code == 401


def test_procedures_lists_every_language_with_stable_ids(client):
    settings = get_settings()
    response = client.get(
        "/api/v1/integrations/n8n/procedures",
        headers={"X-Service-Token": settings.n8n_callback_token},
    )
    assert response.status_code == 200
    documents = response.json()["documents"]
    assert len(documents) > 0
    assert {d["language"] for d in documents} == {"en-GB", "nl-BE", "fr-BE"}
    checkout_docs = [d for d in documents if d["document_id"] == "vehicle-checkout-procedure"]
    assert len(checkout_docs) == 3  # one per language
    assert all(d["content"] and d["content_hash"] for d in checkout_docs)
    # Same document_id, different language, must not collide on id.
    assert len({d["id"] for d in checkout_docs}) == 3

    second_response = client.get(
        "/api/v1/integrations/n8n/procedures",
        headers={"X-Service-Token": settings.n8n_callback_token},
    )
    second_ids = {d["id"] for d in second_response.json()["documents"]}
    assert second_ids == {d["id"] for d in documents}  # ids are stable across requests


def test_procedures_sync_result_rejects_wrong_service_token(client):
    response = client.post(
        "/api/v1/integrations/n8n/procedures-sync-result",
        json={"execution_id": str(uuid.uuid4()), "synced": 5, "failed": 0},
        headers={"X-Service-Token": "wrong-token"},
    )
    assert response.status_code == 401


def test_procedures_sync_result_registers_and_is_idempotent(client, ops_client):
    settings = get_settings()
    headers = {"X-Service-Token": settings.n8n_callback_token}
    execution_id = str(uuid.uuid4())
    body = {"execution_id": execution_id, "synced": 33, "failed": 1}

    first = client.post(
        "/api/v1/integrations/n8n/procedures-sync-result", json=body, headers=headers
    )
    second = client.post(
        "/api/v1/integrations/n8n/procedures-sync-result", json=body, headers=headers
    )

    assert first.status_code == 200
    assert first.json()["status"] == "registered"
    assert second.status_code == 200
    assert second.json()["status"] == "already_registered"

    audit_events = ops_client.get(
        "/api/v1/audit", params={"action": "n8n_procedures_synced"}
    ).json()
    matching = [e for e in audit_events if e["metadata"]["execution_id"] == execution_id]
    assert len(matching) == 1
    assert matching[0]["after"] == {"synced": 33, "failed": 1}