<#
Deploy embycovers to an Asustor NAS over SSH/SCP from Windows PowerShell.

Prerequisites on your Windows machine:
- OpenSSH Client installed. Test with: ssh -V
- SSH enabled on the Asustor NAS.
- Docker / Docker Compose available on the Asustor NAS.

Example:
.\deploy.ps1 -NasHost MATT-NAS -NasUser admin -EmbyUrl http://192.168.1.50:8096 -EmbyApiKey abcdef123456
#>

param(
    [Parameter(Mandatory = $true)]
    [string]$NasHost,

    [Parameter(Mandatory = $true)]
    [string]$NasUser,

    [string]$RemoteAppDir = "/share/Docker/embycovers",

    [Parameter(Mandatory = $true)]
    [string]$EmbyUrl,

    [Parameter(Mandatory = $true)]
    [string]$EmbyApiKey,

    [int]$HostPort = 8500
)

$ErrorActionPreference = "Stop"

function Require-Command($Name) {
    if (-not (Get-Command $Name -ErrorAction SilentlyContinue)) {
        throw "$Name was not found. Install or enable it first."
    }
}

Require-Command ssh
Require-Command scp

$LocalDir = Split-Path -Parent $MyInvocation.MyCommand.Path
$Remote = "$NasUser@$NasHost"

Write-Host "Deploying embycovers to ${Remote}:$RemoteAppDir"
Write-Host "Emby URL: $EmbyUrl"
Write-Host "Host port: $HostPort"

ssh $Remote @"
set -e
mkdir -p '$RemoteAppDir' '$RemoteAppDir/output' '$RemoteAppDir/cache' '$RemoteAppDir/static/studios' '$RemoteAppDir/templates'
"@

# Copy top-level project files.
scp `
    "$LocalDir/app.py" `
    "$LocalDir/Dockerfile" `
    "$LocalDir/docker-compose.yml" `
    "$LocalDir/requirements.txt" `
    "${Remote}:$RemoteAppDir/"

# Copy templates and static assets recursively.
scp -r "$LocalDir/templates/." "${Remote}:$RemoteAppDir/templates/"
scp -r "$LocalDir/static/."    "${Remote}:$RemoteAppDir/static/"

# Copy any loose logo images that live at the repo root.
$LogoFiles = Get-ChildItem -Path $LocalDir -File |
    Where-Object { $_.Extension -in @('.png','.jpg','.jpeg') }
if ($LogoFiles) {
    $LogoArgs = $LogoFiles | ForEach-Object { "`"$($_.FullName)`"" }
    $ScpCmd = "scp $($LogoArgs -join ' ') `"${Remote}:$RemoteAppDir/`""
    Invoke-Expression $ScpCmd
}

# Patch docker-compose.yml on the NAS with the supplied Emby settings, then build & run.
$RemoteCommands = @"
set -e
cd '$RemoteAppDir'

# Patch compose env vars and host port from deployment parameters.
sed -i "s#EMBY_URL=.*#EMBY_URL=$EmbyUrl#g" docker-compose.yml
sed -i "s#EMBY_API_KEY=.*#EMBY_API_KEY=$EmbyApiKey#g" docker-compose.yml
sed -i "s#\"8500:8500\"#\"$HostPort:8500\"#g" docker-compose.yml

if command -v docker-compose >/dev/null 2>&1; then
  docker-compose build
  docker-compose up -d
else
  docker compose build
  docker compose up -d
fi
"@

ssh $Remote $RemoteCommands

Write-Host "Deployment complete."
Write-Host "App should be reachable at: http://${NasHost}:$HostPort"
Write-Host "To view logs:"
Write-Host "  ssh $Remote 'cd $RemoteAppDir && docker compose logs -f'"
