import json
import sys
import unittest
from pathlib import Path
from tempfile import TemporaryDirectory

sys.path.insert(0, str(Path(__file__).resolve().parent))

from generate_hal_component_manifest import OUTPUT, generate, parse_comp, parse_hal

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


class HalComponentManifestTests(unittest.TestCase):
    def test_parse_component_contract(self):
        with TemporaryDirectory() as directory:
            root = Path(directory)
            path = root / "linuxcnc/src/hal/components/demo.comp"
            path.parent.mkdir(parents=True)
            path.write_text("component demo;\npin in float input;\npin out bit output;\nparam rw float gain = 1.0;\nfunction update;\n", encoding="utf-8")
            report = parse_comp(root, path)
            self.assertEqual(report["status"], "verified")
            self.assertEqual(report["component"], "demo")
            self.assertEqual(len(report["pins"]), 2)
            self.assertEqual(report["params"][0]["default"], "1.0")
            self.assertEqual(report["functions"][0]["name"], "update")

    def test_hal_unknown_and_dynamic_loaders_block(self):
        with TemporaryDirectory() as directory:
            root = Path(directory)
            path = root / "linuxcnc/lib/hallib/demo.hal"
            path.parent.mkdir(parents=True)
            path.write_text("loadrt demo names=d0\nloadrt [KINS]KINEMATICS\nloadusr -W external\naddf d0 servo-thread\n", encoding="utf-8")
            records = parse_hal(root, path, {"demo"}, "resource:demo")
            self.assertEqual(records[0]["status"], "declared")
            self.assertEqual(records[1]["code"], "undeclared_or_variable_component")
            self.assertEqual(records[2]["code"], "host_dynamic_loader")
            self.assertEqual(records[3]["status"], "checked")

    def test_generation_is_deterministic(self):
        before = (ROOT / OUTPUT).read_bytes()
        first = generate(ROOT, ROOT / OUTPUT)
        after = (ROOT / OUTPUT).read_bytes()
        self.assertEqual(before, after)
        self.assertEqual(first["report_sha256"], json.loads(after.decode())["report_sha256"])


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