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

from codeql_compare import codeql_alert, method_span, metrics, run


class CodeQLComparisonTests(unittest.TestCase):
    def test_alert_requires_primary_location_inside_method_and_relevant_tag(self):
        side = {
            "path": "src/example.py",
            "state": {"method": {"source": "L0010| def check():\nL0011|     return 1"}},
        }
        sarif = {
            "runs": [{
                "tool": {"driver": {"rules": [
                    {"id": "py/security", "properties": {"tags": ["security"]}},
                    {"id": "py/style", "properties": {"tags": ["maintainability"]}},
                ]}},
                "results": [
                    {"ruleId": "py/security", "locations": [{"physicalLocation": {
                        "artifactLocation": {"uri": "src/example.py"},
                        "region": {"startLine": 11}}}]},
                    {"ruleId": "py/security", "locations": [{"physicalLocation": {
                        "artifactLocation": {"uri": "src/example.py"},
                        "region": {"startLine": 30}}}]},
                    {"ruleId": "py/style", "locations": [{"physicalLocation": {
                        "artifactLocation": {"uri": "src/example.py"},
                        "region": {"startLine": 10}}}]},
                ],
            }],
        }
        with tempfile.TemporaryDirectory() as directory:
            file = Path(directory) / "result.sarif"
            file.write_text(json.dumps(sarif))
            self.assertEqual(method_span(side), (10, 11))
            self.assertEqual(codeql_alert(file, side, "security"), ["py/security"])
            self.assertEqual(codeql_alert(file, side, "bug"), ["py/security"])

    def test_counts_include_false_negatives_and_clean_methods(self):
        result = metrics(iter([(1, True), (1, False), (0, True), (0, False)]))
        self.assertEqual([result[key] for key in ("tp", "fp", "fn", "tn")],
                         [1, 1, 1, 1])
        self.assertEqual(result["f1"], 0.5)
        self.assertIsNone(metrics([(1, False), (0, False)])["precision"])

    def test_scan_stage_has_bounded_runtime(self):
        with tempfile.TemporaryDirectory() as directory:
            code, _ = run([sys.executable, "-c", "import time; time.sleep(2)"],
                          Path(directory) / "stage.log", timeout=0.1)
            self.assertEqual(code, 124)


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