#!/usr/bin/env bash
# =============================================================================
# prepare-app.sh — Build Docker images and create host-path directories
#
# This script:
#   1. Builds the custom Docker images (api, frontend) from source.
#   2. Creates the host directories used by PersistentVolumes.
#
# Prerequisites: Docker installed and running, kubectl configured.
# =============================================================================
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

echo "============================================="
echo "  Preparing Task Manager for Kubernetes..."
echo "============================================="
echo ""

# ---- Step 1: Build Docker images ----------------------------------------
echo "[1/2] Building Docker images..."

echo "      Building taskmanager-api..."
docker build -t taskmanager-api:latest "$SCRIPT_DIR/api"
echo "      ✓ taskmanager-api:latest built"

echo "      Building taskmanager-frontend..."
docker build -t taskmanager-frontend:latest "$SCRIPT_DIR/frontend"
echo "      ✓ taskmanager-frontend:latest built"

# If Minikube is running, load the images into its registry
if command -v minikube &> /dev/null && minikube status &> /dev/null; then
    echo ""
    echo "      Detected Minikube. Loading images into Minikube registry..."
    minikube image load taskmanager-api:latest
    minikube image load taskmanager-frontend:latest
    echo "      ✓ Images loaded into Minikube"
fi

# ---- Step 2: Create host directories for PersistentVolumes ---------------
echo ""
echo "[2/2] Creating host directories for PersistentVolumes..."
sudo mkdir -p /mnt/taskmanager/postgres
sudo mkdir -p /mnt/taskmanager/redis
sudo chmod -R 777 /mnt/taskmanager
echo "      ✓ /mnt/taskmanager/postgres created"
echo "      ✓ /mnt/taskmanager/redis created"

echo ""
echo "============================================="
echo "  ✓ Preparation complete!"
echo "  Run ./start-app.sh to deploy to Kubernetes"
echo "============================================="