from __future__ import annotations

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

sys.path.append(str(Path(__file__).resolve().parent))

from build_release import write_manifest  # type: ignore import-not-found
from verify_release import VerificationError, compute_sha256, verify_release


class VerifyReleaseTests(unittest.TestCase):
    def setUp(self) -> None:
        self._temp = tempfile.TemporaryDirectory()
        self.base_path = Path(self._temp.name)
        self.out_dir = self.base_path / "out"
        self.release_dir = self.out_dir / "release"
        self.release_dir.mkdir(parents=True, exist_ok=True)

    def tearDown(self) -> None:
        self._temp.cleanup()

    def _relative_to_out(self, path: Path) -> str:
        return path.relative_to(self.out_dir).as_posix()

    def _write_json(self, path: Path, payload: dict[str, object]) -> None:
        path.parent.mkdir(parents=True, exist_ok=True)
        with path.open("w", encoding="utf-8") as handle:
            json.dump(payload, handle, indent=2)
            handle.write("\n")

    def _create_sample_release(self) -> None:
        sbom_path = self.release_dir / "artifacts/sboms/sample.cyclonedx.json"
        sbom_path.parent.mkdir(parents=True, exist_ok=True)
        sbom_path.write_text('{"bomFormat":"CycloneDX","specVersion":"1.5"}\n', encoding="utf-8")
        sbom_sha = compute_sha256(sbom_path)

        provenance_path = self.release_dir / "artifacts/provenance/sample.provenance.json"
        self._write_json(
            provenance_path,
            {
                "buildDefinition": {"buildType": "https://example/build", "externalParameters": {}},
                "runDetails": {"builder": {"id": "https://example/ci"}},
            },
        )
        provenance_sha = compute_sha256(provenance_path)

        signature_path = self.release_dir / "artifacts/signatures/sample.signature"
        signature_path.parent.mkdir(parents=True, exist_ok=True)
        signature_path.write_text("signature-data\n", encoding="utf-8")
        signature_sha = compute_sha256(signature_path)

        metadata_path = self.release_dir / "artifacts/metadata/sample.metadata.json"
        self._write_json(metadata_path, {"digest": "sha256:1234"})
        metadata_sha = compute_sha256(metadata_path)

        chart_path = self.release_dir / "helm/stellaops-1.0.0.tgz"
        chart_path.parent.mkdir(parents=True, exist_ok=True)
        chart_path.write_bytes(b"helm-chart-data")
        chart_sha = compute_sha256(chart_path)

        compose_path = self.release_dir.parent / "deploy/compose/docker-compose.dev.yaml"
        compose_path.parent.mkdir(parents=True, exist_ok=True)
        compose_path.write_text("services: {}\n", encoding="utf-8")
        compose_sha = compute_sha256(compose_path)

        debug_file = self.release_dir / "debug/.build-id/ab/cdef.debug"
        debug_file.parent.mkdir(parents=True, exist_ok=True)
        debug_file.write_bytes(b"\x7fELFDEBUGDATA")
        debug_sha = compute_sha256(debug_file)

        debug_manifest_path = self.release_dir / "debug/debug-manifest.json"
        debug_manifest = OrderedDict(
            (
                ("generatedAt", "2025-10-26T00:00:00Z"),
                ("version", "1.0.0"),
                ("channel", "edge"),
                (
                    "artifacts",
                    [
                        OrderedDict(
                            (
                                ("buildId", "abcdef1234"),
                                ("platform", "linux/amd64"),
                                ("debugPath", "debug/.build-id/ab/cdef.debug"),
                                ("sha256", debug_sha),
                                ("size", debug_file.stat().st_size),
                                ("components", ["sample"]),
                                ("images", ["registry.example/sample@sha256:feedface"]),
                                ("sources", ["app/sample.dll"]),
                            )
                        )
                    ],
                ),
            )
        )
        self._write_json(debug_manifest_path, debug_manifest)
        debug_manifest_sha = compute_sha256(debug_manifest_path)
        (debug_manifest_path.with_suffix(debug_manifest_path.suffix + ".sha256")).write_text(
            f"{debug_manifest_sha}  {debug_manifest_path.name}\n", encoding="utf-8"
        )

        manifest = OrderedDict(
            (
                (
                    "release",
                    OrderedDict(
                        (
                            ("version", "1.0.0"),
                            ("channel", "edge"),
                            ("date", "2025-10-26T00:00:00Z"),
                            ("calendar", "2025.10"),
                        )
                    ),
                ),
                (
                    "components",
                    [
                        OrderedDict(
                            (
                                ("name", "sample"),
                                ("image", "registry.example/sample@sha256:feedface"),
                                ("tags", ["registry.example/sample:1.0.0"]),
                                (
                                    "sbom",
                                    OrderedDict(
                                        (
                                            ("path", self._relative_to_out(sbom_path)),
                                            ("sha256", sbom_sha),
                                        )
                                    ),
                                ),
                                (
                                    "provenance",
                                    OrderedDict(
                                        (
                                            ("path", self._relative_to_out(provenance_path)),
                                            ("sha256", provenance_sha),
                                        )
                                    ),
                                ),
                                (
                                    "signature",
                                    OrderedDict(
                                        (
                                            ("path", self._relative_to_out(signature_path)),
                                            ("sha256", signature_sha),
                                            ("ref", "sigstore://example"),
                                            ("tlogUploaded", True),
                                        )
                                    ),
                                ),
                                (
                                    "metadata",
                                    OrderedDict(
                                        (
                                            ("path", self._relative_to_out(metadata_path)),
                                            ("sha256", metadata_sha),
                                        )
                                    ),
                                ),
                            )
                        )
                    ],
                ),
                (
                    "charts",
                    [
                        OrderedDict(
                            (
                                ("name", "stellaops"),
                                ("version", "1.0.0"),
                                ("path", self._relative_to_out(chart_path)),
                                ("sha256", chart_sha),
                            )
                        )
                    ],
                ),
                (
                    "compose",
                    [
                        OrderedDict(
                            (
                                ("name", "docker-compose.dev.yaml"),
                                ("path", compose_path.relative_to(self.out_dir).as_posix()),
                                ("sha256", compose_sha),
                            )
                        )
                    ],
                ),
                (
                    "debugStore",
                    OrderedDict(
                        (
                            ("manifest", "debug/debug-manifest.json"),
                            ("sha256", debug_manifest_sha),
                            ("entries", 1),
                            ("platforms", ["linux/amd64"]),
                            ("directory", "debug/.build-id"),
                        )
                    ),
                ),
            )
        )
        write_manifest(manifest, self.release_dir)

    def test_verify_release_success(self) -> None:
        self._create_sample_release()
        # Should not raise
        verify_release(self.release_dir)

    def test_verify_release_detects_sha_mismatch(self) -> None:
        self._create_sample_release()
        tampered = self.release_dir / "artifacts/sboms/sample.cyclonedx.json"
        tampered.write_text("tampered\n", encoding="utf-8")
        with self.assertRaises(VerificationError):
            verify_release(self.release_dir)

    def test_verify_release_detects_missing_debug_file(self) -> None:
        self._create_sample_release()
        debug_file = self.release_dir / "debug/.build-id/ab/cdef.debug"
        debug_file.unlink()
        with self.assertRaises(VerificationError):
            verify_release(self.release_dir)


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