param(
    [Parameter(Mandatory = $true)]
    [string]$RemoteHost,
    [int]$Port = 22,
    [Parameter(Mandatory = $true)]
    [string]$User,
    [string]$RootDir = "/volume4/Music_Cloud"
)

function Quote-RemotePathForPosixShell {
    param(
        [Parameter(Mandatory = $true)]
        [string]$Path
    )

    $EscapedPath = $Path.Replace("'", "'\''")
    return "'$EscapedPath'"
}

function New-ScpRemoteTarget {
    param(
        [Parameter(Mandatory = $true)]
        [string]$Remote,
        [Parameter(Mandatory = $true)]
        [string]$Path
    )

    return "${Remote}:$(Quote-RemotePathForPosixShell -Path $Path)"
}

$AppHome = "$RootDir/catalogsync"
$RemoteDirs = @(
    $RootDir,
    "$RootDir/library",
    "$AppHome/app",
    "$AppHome/bin",
    "$AppHome/config",
    "$AppHome/data",
    "$AppHome/inputs",
    "$AppHome/logs"
)

$ScriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
$ProjectRoot = Resolve-Path (Join-Path $ScriptDir "..\..")
$Remote = "$User@$RemoteHost"

$QuotedDirs = $RemoteDirs | ForEach-Object { Quote-RemotePathForPosixShell -Path $_ }
$RemoteMkdirCommand = "mkdir -p " + ($QuotedDirs -join " ")
ssh -p $Port $Remote $RemoteMkdirCommand
if ($LASTEXITCODE -ne 0) {
    throw "Failed to create remote directories."
}

$AppSources = @(
    (Join-Path $ProjectRoot "musicdl"),
    (Join-Path $ProjectRoot "setup.py"),
    (Join-Path $ProjectRoot "README.md"),
    (Join-Path $ProjectRoot "LICENSE"),
    (Join-Path $ProjectRoot "requirements.txt"),
    (Join-Path $ProjectRoot "requirements-optional.txt")
)
$RemoteAppDirTarget = New-ScpRemoteTarget -Remote $Remote -Path "$AppHome/app/"
foreach ($Source in $AppSources) {
    scp -P $Port -r $Source $RemoteAppDirTarget
    if ($LASTEXITCODE -ne 0) {
        throw "Failed to copy app source: $Source"
    }
}

$BinTemplates = @(
    (Join-Path $ScriptDir "templates\download_all.sh"),
    (Join-Path $ScriptDir "templates\download_from_file.sh"),
    (Join-Path $ScriptDir "templates\upload_all.sh"),
    (Join-Path $ScriptDir "templates\install_runtime.sh"),
    (Join-Path $ScriptDir "templates\serve_console.sh"),
    (Join-Path $ScriptDir "templates\deploy_and_restart.sh")
)
$RemoteBinDirTarget = New-ScpRemoteTarget -Remote $Remote -Path "$AppHome/bin/"
foreach ($Template in $BinTemplates) {
    scp -P $Port $Template $RemoteBinDirTarget
    if ($LASTEXITCODE -ne 0) {
        throw "Failed to copy bin template: $Template"
    }
}

$RemoteEnvExample = "$AppHome/config/catalogsync.env.example"
$LocalEnvExample = Join-Path $ScriptDir "templates\catalogsync.env.example"
$RemoteEnvExampleTarget = New-ScpRemoteTarget -Remote $Remote -Path $RemoteEnvExample
scp -P $Port $LocalEnvExample $RemoteEnvExampleTarget
if ($LASTEXITCODE -ne 0) {
    throw "Failed to copy catalogsync.env.example."
}