from __future__ import annotations

import hashlib
import sys
from pathlib import Path

import pytest

sys.path.insert(0, str(Path(__file__).parents[1] / "scripts"))

from check_electron_release_assets import (  # noqa: E402
    ReleaseContractError,
    TARGETS,
    verify_release,
)


def _release(tmp_path: Path, *, channel: str = "preview", version: str = "0.5.3-144"):
    assets = []
    for target, (manifest_target, os_token, arch, extension) in TARGETS.items():
        artifact = f"VoiceStudio-Electron-{version}-{os_token}-{arch}{extension}"
        manifest_name = f"electron-{channel}-{manifest_target}.yml"
        body = (
            f"version: {version}\n"
            "files:\n"
            f"  - url: {artifact}\n"
            f"    sha512: {'a' * 88}\n"
            "    size: 1234\n"
            f"path: {artifact}\n"
            f"sha512: {'a' * 88}\n"
            "releaseDate: '2026-09-14T00:00:00.000Z'\n"
        ).encode()
        (tmp_path / manifest_name).write_bytes(body)
        assets.extend(
            [
                {
                    "name": manifest_name,
                    "size": len(body),
                    "digest": f"sha256:{hashlib.sha256(body).hexdigest()}",
                },
                {"name": artifact, "size": 1234, "digest": "sha256:payload"},
            ]
        )
        if target == "win32-x64":
            assets.append({"name": f"{artifact}.blockmap", "size": 10, "digest": "sha256:map"})
    return {
        "tagName": "preview" if channel == "preview" else f"v{version}",
        "isPrerelease": channel == "preview",
        "assets": assets,
    }


def test_complete_four_target_release_passes(tmp_path: Path):
    result = verify_release(_release(tmp_path), tmp_path, channel="preview", version="0.5.3-144")
    assert len(result) == 4
    assert {item.split(" -> ", 1)[0] for item in result} == {
        "electron-preview-darwin-arm64-mac.yml",
        "electron-preview-darwin-x64-mac.yml",
        "electron-preview-linux-x64-linux.yml",
        "electron-preview-win32-x64.yml",
    }


def test_missing_platform_manifest_fails_closed(tmp_path: Path):
    release = _release(tmp_path)
    (tmp_path / "electron-preview-darwin-arm64-mac.yml").unlink()
    with pytest.raises(ReleaseContractError, match="missing downloaded manifest"):
        verify_release(release, tmp_path, channel="preview", version="0.5.3-144")


def test_published_payload_size_must_match_manifest(tmp_path: Path):
    release = _release(tmp_path)
    payload = next(
        asset for asset in release["assets"] if asset["name"].endswith("-win-x64.exe")
    )
    payload["size"] = 999
    with pytest.raises(ReleaseContractError, match="published size"):
        verify_release(release, tmp_path, channel="preview", version="0.5.3-144")


def test_preview_cannot_masquerade_as_stable(tmp_path: Path):
    release = _release(tmp_path)
    with pytest.raises(ReleaseContractError, match="prerelease flag"):
        verify_release(release, tmp_path, channel="stable", version="0.5.2")


def test_preview_requires_the_numeric_run_stamp(tmp_path: Path):
    release = _release(tmp_path, version="0.5.3")
    with pytest.raises(ReleaseContractError, match="wrong shape"):
        verify_release(release, tmp_path, channel="preview", version="0.5.3")


def test_stable_release_tag_must_match_the_manifest_version(tmp_path: Path):
    release = _release(tmp_path, channel="stable", version="0.5.3")
    release["tagName"] = "v0.5.2"
    with pytest.raises(ReleaseContractError, match="release tag"):
        verify_release(release, tmp_path, channel="stable", version="0.5.3")