#Requires -Version 7
<#
.SYNOPSIS
    Prepares a deployment package for LinkSyncServer.

.DESCRIPTION
    Copies only the files needed for production deployment to a target folder,
    excludes development artifacts, and creates a starter .env file.
    After running, the user should edit the .env file with production secrets
    and run docker-compose up -d --build in the target folder.

.PARAMETER DeployPath
    Path to the deployment folder. Will be created if it does not exist.

.EXAMPLE
    .\deploy.ps1 -DeployPath "..\linksync-deploy"
    .\deploy.ps1 ..\linksync-deploy
#>

param(
    [Parameter(Mandatory = $true, Position = 0)]
    [string]$DeployPath
)

$ErrorActionPreference = "Stop"

$SourceDir = if ($PSScriptRoot) { $PSScriptRoot } else { (Get-Location).Path }

# Patterns excluded from deployment

Write-Host "LinkSyncServer - Deploy Script" -ForegroundColor Cyan
Write-Host "  Source:      $SourceDir" -ForegroundColor Gray
Write-Host "  Deploy to:   $DeployPath" -ForegroundColor Gray
Write-Host ""

# Resolve to absolute path
if (Test-Path $DeployPath) {
    $DeployPath = (Get-Item $DeployPath).FullName
}
else {
    $DeployPath = (New-Item -ItemType Directory -Force -Path $DeployPath).FullName
}

# Clean target folder if it exists and has content
if (Test-Path $DeployPath) {
    $existing = Get-ChildItem -Path $DeployPath -Force -ErrorAction SilentlyContinue
    if ($existing) {
        $confirm = Read-Host "Target folder already exists. Clear it? (y/N)"
        if ($confirm -ne "y") {
            Write-Host "Aborted." -ForegroundColor Yellow
            exit 1
        }
        Remove-Item -Path "$DeployPath\*" -Recurse -Force
    }
}
else {
    New-Item -ItemType Directory -Force -Path $DeployPath | Out-Null
}

Write-Host "Copying files..." -ForegroundColor Gray

# Build robocopy arguments
$robocopyArgs = @(
    $SourceDir,
    $DeployPath,
    "/E",
    "/NFL",
    "/NDL",
    "/NJH",
    "/NJS",
    "/NC",
    "/NS",
    "/NP",
    "/XD", "__pycache__", ".pytest_cache", ".git", ".vscode", ".idea",
    ".mypy_cache", ".ruff_cache", "node_modules", "dist", "build", "tests",
    "/XF", "*.pyc", "*.pyo", "*.pyd", "*.db", "*.sqlite3",
    "*.egg-info", "deploy.ps1", "deploy.sh"
)

$result = & robocopy @robocopyArgs

# robocopy exit codes: 0-7 are success, 8+ are errors
$exitCode = $LASTEXITCODE
if ($exitCode -ge 8) {
    Write-Host "Error during file copy (robocexit code: $exitCode)" -ForegroundColor Red
    exit 1
}

# Copy .env.example as .env
if (Test-Path "$SourceDir\.env.example") {
    Copy-Item "$SourceDir\.env.example" "$DeployPath\.env"
    Write-Host "  Created .env from .env.example" -ForegroundColor Green
}

Write-Host ""
Write-Host "Deployment package prepared at: $DeployPath" -ForegroundColor Cyan
Write-Host ""
Write-Host "Next steps:" -ForegroundColor Yellow
Write-Host "  1. Edit $DeployPath\.env with production secrets" -ForegroundColor Gray
Write-Host "     - Set DATABASE_URL (PostgreSQL connection string)" -ForegroundColor Gray
Write-Host "     - Set SECRET_KEY (generate: openssl rand -base64 32)" -ForegroundColor Gray
Write-Host "     - Set ADMIN_PASSWORD (strong password)" -ForegroundColor Gray
Write-Host "  2. Run: cd $DeployPath" -ForegroundColor Gray
Write-Host "  3. Run: docker-compose up -d --build" -ForegroundColor Gray
Write-Host ""