# =============================================================================
# 01-login.ps1  (Windows)
# Authenticates your local machine to Google Cloud and configures Docker
# to push images to Artifact Registry.
#
# Run this once per machine (or whenever your credentials expire).
# Linux users: run GCR/scripts/01-login.sh instead.
# =============================================================================
#Requires -Version 5.1
Set-StrictMode -Version Latest
$ErrorActionPreference = 'Stop'

$ScriptDir  = Split-Path -Parent $MyInvocation.MyCommand.Path
$EnvFile    = Join-Path $ScriptDir "..\\.env"

# ── Load .env ─────────────────────────────────────────────────────────────────
if (-not (Test-Path $EnvFile)) {
    Write-Error "ERROR: $EnvFile not found.`nCopy GCR\.env.example to GCR\.env and fill in your values first."
    exit 1
}

$config = @{}
foreach ($line in Get-Content $EnvFile) {
    # Skip blank lines and comments
    if ($line -match '^\s*$' -or $line -match '^\s*#') { continue }
    if ($line -match '^([^=]+)=(.*)$') {
        $config[$Matches[1].Trim()] = $Matches[2].Trim()
    }
}

$GCP_PROJECT_ID = if ($config['GCP_PROJECT_ID']) { $config['GCP_PROJECT_ID'] } else { '' }
$GCP_REGION     = if ($config['GCP_REGION'])     { $config['GCP_REGION'] }     else { '' }

if (-not $GCP_PROJECT_ID) { Write-Error "GCP_PROJECT_ID is not set in .env"; exit 1 }
if (-not $GCP_REGION)     { Write-Error "GCP_REGION is not set in .env";     exit 1 }

# ── Step 1: Authenticate user account ────────────────────────────────────────
Write-Host ">>> Logging in to Google Cloud..."
Write-Host "    A browser window will open. Sign in with the Google account"
Write-Host "    that has access to project: $GCP_PROJECT_ID"
Write-Host ""
gcloud auth login

# ── Step 2: Set default project ──────────────────────────────────────────────
Write-Host ""
Write-Host ">>> Setting default project to: $GCP_PROJECT_ID"
gcloud config set project $GCP_PROJECT_ID

# ── Step 3: Set default region ───────────────────────────────────────────────
Write-Host ">>> Setting default region to: $GCP_REGION"
gcloud config set run/region $GCP_REGION

# ── Step 4: Configure Docker to authenticate against Artifact Registry ────────
Write-Host ""
Write-Host ">>> Configuring Docker to authenticate with Artifact Registry..."
gcloud auth configure-docker "$GCP_REGION-docker.pkg.dev" --quiet

Write-Host ""
Write-Host ">>> Login complete. You are now authenticated as:"
gcloud auth list --filter=status:ACTIVE --format='value(account)'
Write-Host ""
Write-Host ">>> Next step: run GCR\scripts\02-setup-project.ps1"