#!/usr/bin/env bash
set -euo pipefail

# etc/deploy_pipeline.sh
# Collects artifacts and prepares terraform directory for GCP deployment

usage() {
    echo "Usage: $0 --mode <gcp>"
    echo "Options:"
    echo "  --mode gcp    Prepare and publish the terraform pipeline to GCP"
    exit 1
}

if [[ $# -eq 0 ]]; then
    usage
fi

MODE=""
while [[ $# -gt 0 ]]; do
    case "$1" in
        --mode)
            MODE="$2"
            shift 2
            ;;
        *)
            usage
            ;;
    esac
done

if [[ "$MODE" != "gcp" ]]; then
    echo "Error: Only 'gcp' mode is supported currently."
    usage
fi

# Mode GCP Implementation
echo "Preparing GCP deployment pipeline..."

PROJECT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
STAGING_DIR="${STAGING_DIR:-$PROJECT_ROOT/data/staging}"
TF_DIR="$PROJECT_ROOT/deploy/gcp/terraform"

if [[ ! -d "$STAGING_DIR" ]]; then
    echo "Staging directory not found: $STAGING_DIR"
    echo "Please ensure artifacts are staged before running this script."
    exit 1
fi

echo "Collecting artifacts from $STAGING_DIR..."
# Logic to lift and shift kubernetes deployment into terraform directory
# For now, we'll just simulate this by copying relevant files or updating tfvars

# Example: copy staged manifests to a specific location in TF directory if needed
# mkdir -p "$TF_DIR/manifests"
# cp "$STAGING_DIR"/*.yaml "$TF_DIR/manifests/"

echo "Preparing terraform directory at $TF_DIR..."
# cd "$TF_DIR"
# terraform init

echo "GCP deployment pipeline prepared successfully."
echo "You can now run terraform apply in $TF_DIR"