"""Run just the ADB startup functions with fake commands; never touch host ADB."""

import os
from pathlib import Path
import shutil
import subprocess

import pytest

ROOT = Path(__file__).resolve().parents[2]


@pytest.mark.skipif(not shutil.which("powershell.exe"), reason="Windows PowerShell required")
@pytest.mark.parametrize("script_name", ["start.ps1", "install_deps.ps1"])
@pytest.mark.parametrize("outcome", ["success", "failure", "exception"])
def test_adb_startup_reports_failure_and_preserves_server_environment(
    tmp_path, script_name, outcome
):
    harness = tmp_path / "adb-startup.ps1"
    harness.write_text(
        """
$ErrorActionPreference = 'Stop'
[Console]::OutputEncoding = New-Object System.Text.UTF8Encoding($false)
$tokens = $null
$parseErrors = $null
$ast = [System.Management.Automation.Language.Parser]::ParseFile(
    $env:ADB_TEST_SCRIPT, [ref]$tokens, [ref]$parseErrors)
if ($parseErrors.Count) { throw ($parseErrors | Out-String) }
$function = $ast.Find({ param($node)
    $node -is [System.Management.Automation.Language.FunctionDefinitionAst] -and
    $node.Name -eq 'Start-LocalAdbServer'
}, $true)
Invoke-Expression $function.Extent.Text
function Test-CommandExists { return $true }
function adb {
    Write-Host ('ADB_ARGS=' + ($args -join '|'))
    if ($env:ADB_TEST_OUTCOME -eq 'exception') { throw 'fixture launch error' }
    Write-Error 'fixture stderr' -ErrorAction Continue
    $global:LASTEXITCODE = $(if ($env:ADB_TEST_OUTCOME -eq 'failure') { 7 } else { 0 })
}
Start-LocalAdbServer
if ($env:ADB_SERVER_SOCKET -ne 'tcp:remote.example:5040') { throw 'Socket was changed' }
if ($env:ANDROID_ADB_SERVER_ADDRESS -ne 'remote.example') { throw 'Host was changed' }
if ($env:ANDROID_ADB_SERVER_PORT -ne '5040') { throw 'Port was changed' }
if ($ErrorActionPreference -ne 'Stop') { throw 'Error preference was changed' }
Write-Host 'HARNESS_OK'
""",
        encoding="utf-8-sig",
    )
    result = subprocess.run(
        ["powershell.exe", "-NoProfile", "-ExecutionPolicy", "Bypass", "-File", str(harness)],
        env={
            **os.environ,
            "ADB_TEST_SCRIPT": str(ROOT / "scripts" / script_name),
            "ADB_TEST_OUTCOME": outcome,
            "ADB_SERVER_SOCKET": "tcp:remote.example:5040",
            "ANDROID_ADB_SERVER_ADDRESS": "remote.example",
            "ANDROID_ADB_SERVER_PORT": "5040",
        },
        capture_output=True,
        encoding="utf-8",
        errors="replace",
        timeout=15,
    )
    assert result.returncode == 0, result.stdout + result.stderr
    assert "ADB_ARGS=-H|localhost|-P|5037|start-server" in result.stdout
    assert "HARNESS_OK" in result.stdout
    if outcome == "success":
        assert "[警告]" not in result.stdout
    elif outcome == "failure":
        assert "退出码 7" in result.stdout
        assert "fixture stderr" in result.stdout
    else:
        assert "启动异常" in result.stdout
        assert "fixture launch error" in result.stdout