# Build and start the MyOffice demo stack (SPA + API + Postgres + pgAdmin).
# Usage:
#   .\build.ps1                              # front 32080, back 32081, pgAdmin 32082
#   .\build.ps1 32080 32081 32082            # override ports
#   .\build.ps1 build | up | down | logs
#   .\build.ps1 rebuild                      # --no-cache images + recreate containers
#   .\build.ps1 reset                        # wipe ./data/demo/*, rebuild, start (new demo passwords)

$ErrorActionPreference = 'Stop'
$here = Split-Path -Parent $MyInvocation.MyCommand.Path
Set-Location $here

$composeFile = 'docker-compose.demo.yml'
$knownActions = @('build', 'up', 'down', 'logs', 'all', 'rebuild', 'reset')

function Test-Port([string]$value) {
	return $value -match '^\d{1,5}$' -and [int]$value -ge 1 -and [int]$value -le 65535
}

function Format-Origin([string]$port) {
	if ($port -eq '80') { return 'http://localhost' }
	return "http://localhost:$port"
}

function Show-UpInfo {
	param([string]$FrontOrigin, [string]$ApiPublicUrl, [string]$PgAdminUrl)
	Write-Host ''
	Write-Host 'Demo is up:'
	Write-Host "  Frontend  $FrontOrigin"
	Write-Host "  Backend   $ApiPublicUrl"
	Write-Host "  pgAdmin   $PgAdminUrl  (admin@example.com / admin; DB auto-connected)"
	Write-Host '  Postgres  internal host=postgres user/pass/db=myoffice'
	Write-Host ''
	Write-Host 'Demo logins: user_UAH@user_UAH.userUAH / user_UAH (also USD, EUR)'
}

function Invoke-DockerCompose {
	param([Parameter(ValueFromRemainingArguments = $true)][string[]]$ComposeArgs)
	# Docker writes progress to stderr; with ErrorAction Stop that aborts the script.
	$prev = $ErrorActionPreference
	$ErrorActionPreference = 'Continue'
	try {
		& docker compose -f $composeFile @ComposeArgs
		if ($LASTEXITCODE -ne 0) {
			throw "docker compose failed with exit code $LASTEXITCODE"
		}
	}
	finally {
		$ErrorActionPreference = $prev
	}
}

# Parse: [action] [frontPort] [backPort] [pgAdminPort]
# Numeric args arrive as Int32 — always normalize to string first.
$action = 'all'
$frontPort = '32080'
$backPort = '32081'
$pgAdminPort = '32082'
$rest = @($args | ForEach-Object { "$_" })

if ($rest.Count -gt 0 -and $knownActions -contains $rest[0].ToLowerInvariant()) {
	$action = $rest[0].ToLowerInvariant()
	$rest = @($rest | Select-Object -Skip 1)
}
elseif ($rest.Count -gt 0 -and (Test-Port $rest[0])) {
	$action = 'all'
}

if ($rest.Count -ge 1) {
	if (-not (Test-Port $rest[0])) {
		Write-Error "Invalid front port '$($rest[0])'. Example: .\build.ps1 32080 32081 32082"
	}
	$frontPort = [string]$rest[0]
}
if ($rest.Count -ge 2) {
	if (-not (Test-Port $rest[1])) {
		Write-Error "Invalid back port '$($rest[1])'. Example: .\build.ps1 32080 32081 32082"
	}
	$backPort = [string]$rest[1]
}
if ($rest.Count -ge 3) {
	if (-not (Test-Port $rest[2])) {
		Write-Error "Invalid pgAdmin port '$($rest[2])'. Example: .\build.ps1 32080 32081 32082"
	}
	$pgAdminPort = [string]$rest[2]
}
if ($rest.Count -gt 3 -and $action -ne 'down' -and $action -ne 'logs') {
	Write-Error 'Too many arguments. Usage: .\build.ps1 [build|up|down|logs|rebuild|reset] [frontPort] [backPort] [pgAdminPort]'
}

$frontOrigin = Format-Origin $frontPort
$apiPublicUrl = "http://localhost:$backPort"
$pgAdminUrl = Format-Origin $pgAdminPort

$env:MYOFFICE_WEB_PORT = $frontPort
$env:MYOFFICE_API_PORT = $backPort
$env:MYOFFICE_PGADMIN_PORT = $pgAdminPort
$env:MYOFFICE_FRONTEND_HOST = $frontOrigin
$env:MYOFFICE_API_PUBLIC_URL = $apiPublicUrl
$env:MYOFFICE_CORS_0 = $frontOrigin
$env:MYOFFICE_CORS_1 = if ($frontPort -eq '80') { 'http://127.0.0.1' } else { "http://127.0.0.1:$frontPort" }

# Avoid stale compose env / cached layers leaving old API code running.
$env:COMPOSE_DOCKER_CLI_BUILD = '1'
$env:DOCKER_BUILDKIT = '1'

switch ($action) {
	'build' {
		Invoke-DockerCompose build
	}
	'up' {
		New-Item -ItemType Directory -Path (Join-Path $here 'data\demo\postgres') -Force | Out-Null
		New-Item -ItemType Directory -Path (Join-Path $here 'data\demo\pgadmin') -Force | Out-Null
		Invoke-DockerCompose up -d --build --force-recreate --remove-orphans
		Show-UpInfo $frontOrigin $apiPublicUrl $pgAdminUrl
	}
	'down' {
		Invoke-DockerCompose down
	}
	'logs' {
		Invoke-DockerCompose logs -f
	}
	'rebuild' {
		Write-Host 'Rebuilding images with --no-cache (api + web)...'
		Invoke-DockerCompose build --no-cache --pull
		Invoke-DockerCompose up -d --force-recreate --remove-orphans
		Show-UpInfo $frontOrigin $apiPublicUrl $pgAdminUrl
	}
	'reset' {
		Write-Host 'Stopping stack and wiping ./data/demo/postgres and ./data/demo/pgadmin...'
		Invoke-DockerCompose down
		foreach ($dir in @('data\demo\postgres', 'data\demo\pgadmin')) {
			$path = Join-Path $here $dir
			if (Test-Path $path) {
				Remove-Item -LiteralPath $path -Recurse -Force
			}
			New-Item -ItemType Directory -Path $path -Force | Out-Null
		}
		# Drop old named volumes if they still exist from earlier setups.
		docker volume rm myoffice-demo_myoffice_pgdata myoffice-demo_myoffice_pgadmin 2>$null | Out-Null
		Write-Host 'Rebuilding images with --no-cache...'
		Invoke-DockerCompose build --no-cache --pull
		Invoke-DockerCompose up -d --force-recreate --remove-orphans
		Show-UpInfo $frontOrigin $apiPublicUrl $pgAdminUrl
		Write-Host ''
		Write-Host 'DB was reset. Login with password user_UAH (not user1_UAH).'
		Write-Host 'Data folders: Docker\data\demo\postgres , Docker\data\demo\pgadmin'
	}
	'all' {
		New-Item -ItemType Directory -Path (Join-Path $here 'data\demo\postgres') -Force | Out-Null
		New-Item -ItemType Directory -Path (Join-Path $here 'data\demo\pgadmin') -Force | Out-Null
		Invoke-DockerCompose up -d --build --force-recreate --remove-orphans
		Show-UpInfo $frontOrigin $apiPublicUrl $pgAdminUrl
	}
	default {
		Write-Error "Unknown action '$action'. Use: build, up, down, logs, rebuild, reset, or no args."
	}
}