import pathlib
import re
import unittest

ROOT = pathlib.Path(__file__).parents[1]


def get_artifact_text(filename):
    search_dirs = [
        ROOT / "deliverables" / "as-is",
        ROOT / "deliverables" / "target",
        ROOT / "deliverables" / "validation",
        ROOT / "deliverables" / "guides",
        ROOT / "deliverables",
        ROOT / "docs",
        ROOT,
    ]
    for d in search_dirs:
        candidate = d / filename
        if candidate.is_file():
            return candidate.read_text(encoding="utf-8")
    raise FileNotFoundError(f"Artifact {filename} not found")


class ArtifactTests(unittest.TestCase):
    def test_requirements_defer_products(self):
        text = get_artifact_text("requirements.md")
        self.assertIn("Product selection deferred:", text)
        self.assertIn("Open questions", text)

    def test_architecture_has_products_and_flow(self):
        text = get_artifact_text("architecture.md")
        for product in ("Cloud Run", "Pub/Sub", "Cloud Storage", "Firestore"):
            self.assertIn(product, text)

    def test_mermaid_is_flowchart(self):
        text = get_artifact_text("architecture.mmd")
        self.assertTrue(text.startswith("flowchart"))
        self.assertIn("Cloud Run", text)

    def test_terraform_root_is_complete(self):
        main = (ROOT / "terraform/main.tf").read_text()
        self.assertIn("google_cloud_run_v2_service", main)
        self.assertIn("google_pubsub_topic", main)
        self.assertNotRegex(main, r"(?i)(password|secret|private_key)\\s*=")

    def test_guide_packages_outputs(self):
        guide = get_artifact_text("solution-architecture-guide.md")
        for heading in ("Requirements", "Architecture", "Terraform", "Validation", "Verification"):
            self.assertIn(heading, guide)


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