"""Exercise the Windows launcher without downloading or compiling Docker images."""

import json
import shutil
import subprocess
from pathlib import Path

import pytest

POWERSHELL = shutil.which("powershell")
REPO_ROOT = Path(__file__).resolve().parents[1]
pytestmark = pytest.mark.skipif(not POWERSHELL, reason="Windows PowerShell is required")


def run_launcher(tmp_path, arguments, image_architecture):
    docker_dir = tmp_path / "build" / "wheel" / "docker"
    docker_dir.mkdir(parents=True)
    shutil.copy2(REPO_ROOT / "build/wheel/docker/run.ps1", docker_dir)
    (docker_dir / "entrypoint.sh").write_text("#!/bin/bash\n", encoding="utf-8")
    parameters = {}
    iterator = iter(arguments)
    for argument in iterator:
        parameters[argument.lstrip("-")] = (
            True if argument == "-SkipImageBuild" else next(iterator)
        )
    (tmp_path / "arguments.json").write_text(json.dumps(parameters), encoding="utf-8")
    harness = tmp_path / "harness.ps1"
    harness.write_text(
        """
$ErrorActionPreference = 'Stop'
$global:Calls = [System.Collections.Generic.List[object]]::new()
function docker {
    $global:Calls.Add(@($args))
    $global:LASTEXITCODE = 0
    if ($args[0] -eq 'version') { return 'linux' }
    if ($args[0] -eq 'image') { return '__ARCH__' }
}
$decoded = Get-Content (Join-Path $PSScriptRoot 'arguments.json') -Raw | ConvertFrom-Json
$parameters = @{}
foreach ($property in $decoded.PSObject.Properties) { $parameters[$property.Name] = $property.Value }
try {
    & (Join-Path $PSScriptRoot 'build/wheel/docker/run.ps1') @parameters
} finally {
    ConvertTo-Json -InputObject @($global:Calls.ToArray()) -Depth 5 |
        Set-Content (Join-Path $PSScriptRoot 'calls.json') -Encoding UTF8
}
""".replace("__ARCH__", image_architecture),
        encoding="utf-8",
    )
    result = subprocess.run(
        [POWERSHELL, "-NoProfile", "-ExecutionPolicy", "Bypass", "-File", str(harness)],
        capture_output=True,
        text=True,
        check=False,
    )
    calls = json.loads((tmp_path / "calls.json").read_text(encoding="utf-8-sig"))
    return result, calls


@pytest.mark.parametrize(
    "arguments,image_architecture,platform,architecture,image_name",
    [
        ([], "amd64", "linux/amd64", "x86_64", "orisys-manylinux"),
        (
            ["-Architecture", "aarch64"],
            "arm64",
            "linux/arm64",
            "aarch64",
            "orisys-manylinux-aarch64",
        ),
        (
            ["-Architecture", "AARCH64"],
            "arm64",
            "linux/arm64",
            "aarch64",
            "orisys-manylinux-aarch64",
        ),
    ],
)
def test_architecture_controls_build_and_run(
    tmp_path, arguments, image_architecture, platform, architecture, image_name
):
    result, calls = run_launcher(tmp_path, arguments, image_architecture)
    assert result.returncode == 0, result.stderr
    build = next(call for call in calls if call[0] == "build")
    run = next(call for call in calls if call[0] == "run")
    assert build[build.index("--platform") + 1] == platform
    assert build[build.index("--build-arg") + 1] == f"MANYLINUX_ARCH={architecture}"
    assert build[build.index("-t") + 1] == image_name
    assert run[run.index("--platform") + 1] == platform
    assert run[-1] == image_name


@pytest.mark.parametrize(
    "image_architecture,success", [("arm64", True), ("amd64", False)]
)
def test_reused_image_must_match_requested_architecture(
    tmp_path, image_architecture, success
):
    result, calls = run_launcher(
        tmp_path,
        [
            "-Architecture",
            "aarch64",
            "-SkipImageBuild",
            "-ImageName",
            "custom-arm",
            "-PythonVersions",
            "3.10",
        ],
        image_architecture,
    )
    assert not any(call[0] == "build" for call in calls)
    assert (result.returncode == 0) == success
    runs = [call for call in calls if call[0] == "run"]
    if success:
        assert runs[0][-1] == "custom-arm"
        assert "ORISYS_PYTHON_TAGS=cp310-cp310" in runs[0]
    else:
        assert not runs
        assert "architecture" in result.stderr.lower()