import json
import unittest
from pathlib import Path

CANON = Path(__file__).parents[1] / "projects" / "slop_cannon" / "canon.json"


class CanonLifecycleTests(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        cls.data = json.loads(CANON.read_text())

    def test_forms_have_lifecycle_state(self):
        """Every form must have a state field (candidate/survivor/archive_ghost)."""
        for form in self.data["forms"]:
            self.assertIn("state", form, f"Form {form.get('id', '?')} missing lifecycle state")
            self.assertIn(form["state"], ["candidate", "survivor", "archive_ghost"])

    def test_audience_choice_schema_defined(self):
        """Schema must define how a choice is structured so Episode 04 can parse it."""
        schema = self.data.get("audience_choice_schema", {})
        required = ["survivor_id", "stolen_trait", "source_episode", "source_issue"]
        for field in required:
            self.assertIn(field, schema, f"audience_choice_schema missing {field}")

    def test_receipt_schema_defined(self):
        """Receipts need provenance fields for path-proof binding."""
        schema = self.data.get("receipt_schema", {})
        required = ["episode_id", "form_id", "provenance", "signed_by"]
        for field in required:
            self.assertIn(field, schema, f"receipt_schema missing {field}")

    def test_receipt_schema_requires_agent_signing(self):
        """Signed_by must constrain to known actors — free text defeats path proofs."""
        signed = self.data["receipt_schema"]["signed_by"]
        self.assertIn("agent:", signed, "signed_by should mention agent: prefix")

    def test_law_enforced_by_data(self):
        """Law 'Every firing leaves a power, scar, cost, and receipt' requires receipt_schema to exist."""
        laws_text = " ".join(self.data["laws"]).lower()
        self.assertIn("receipt", laws_text)
        self.assertIn("receipt_schema", self.data, "Law mentions receipt but no schema enforces it")


if __name__ == "__main__":
    unittest.main()