param([switch]$Build, [string]$SecretsFile = (Join-Path $PSScriptRoot 'secrets.psd1'))
. (Join-Path $PSScriptRoot 'common.ps1')
$settings = Read-LocalSettings $SecretsFile
New-Item -ItemType Directory -Path $runtimePath -Force | Out-Null
$existing = Get-LocalServerProcess
if ($existing) { throw "The local server is already running with PID $($existing.ProcessId)." }
$jarPath = Join-Path $repoPath 'yudao-server/target/yudao-server.jar'
if ($Build -or -not (Test-Path -LiteralPath $jarPath)) {
    Push-Location $repoPath
    try {
        & mvn -B -ntp -pl yudao-server -am package -DskipTests
        if ($LASTEXITCODE -ne 0) { throw 'Maven build failed.' }
    } finally { Pop-Location }
}
$listener = Get-NetTCPConnection -State Listen -LocalPort $settings.ServerPort -ErrorAction SilentlyContinue
if ($listener) { throw "Port $($settings.ServerPort) is already in use. Set a different ServerPort in secrets.psd1." }
Invoke-LocalMySql $settings 'SELECT 1 FROM system_users LIMIT 1;' $settings.DatabaseName | Out-Null
$javaExe = Resolve-LocalProgram $settings.JavaExe 'java.exe'
$environment = @{
    ELDER_DB_HOST = [string]$settings.DatabaseHost
    ELDER_DB_PORT = [string]$settings.DatabasePort
    ELDER_DB_NAME = [string]$settings.DatabaseName
    ELDER_DB_USER = [string]$settings.DatabaseUser
    ELDER_DB_PASSWORD = [string]$settings.DatabasePassword
    ELDER_REDIS_HOST = [string]$settings.RedisHost
    ELDER_REDIS_PORT = [string]$settings.RedisPort
    ELDER_REDIS_DATABASE = [string]$settings.RedisDatabase
    SPRING_REDIS_PASSWORD = $(if ($settings.RedisPassword) { [string]$settings.RedisPassword } else { $null })
    ELDER_SERVER_PORT = [string]$settings.ServerPort
    ELDER_LOG_FILE = Join-Path $runtimePath 'application.log'
}
$previousEnvironment = @{}
try {
    foreach ($key in $environment.Keys) {
        $previousEnvironment[$key] = [Environment]::GetEnvironmentVariable($key, 'Process')
        if ($null -eq $environment[$key]) { Remove-Item -LiteralPath "Env:\$key" -ErrorAction SilentlyContinue }
        else { [Environment]::SetEnvironmentVariable($key, $environment[$key], 'Process') }
    }
    $server = Start-Process -FilePath $javaExe -ArgumentList @('-Xms256m', '-Xmx1024m', '-Dfile.encoding=UTF-8', '-jar', ('"' + $jarPath + '"'), '--spring.profiles.active=local,desktop') `
        -WorkingDirectory $repoPath -WindowStyle Hidden -PassThru `
        -RedirectStandardOutput (Join-Path $runtimePath 'stdout.log') -RedirectStandardError (Join-Path $runtimePath 'stderr.log')
} finally {
    foreach ($key in $previousEnvironment.Keys) {
        if ($null -eq $previousEnvironment[$key]) { Remove-Item -LiteralPath "Env:\$key" -ErrorAction SilentlyContinue }
        else { [Environment]::SetEnvironmentVariable($key, $previousEnvironment[$key], 'Process') }
    }
}
[System.IO.File]::WriteAllText((Join-Path $runtimePath 'server.pid'), [string]$server.Id)
Write-Output "Started PID $($server.Id). API docs: http://127.0.0.1:$($settings.ServerPort)/doc.html"
Write-Output "Check health at http://127.0.0.1:$($settings.ServerPort)/actuator/health and logs in $runtimePath."