#!/bin/bash
set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
DISK_IMG="$PROJECT_DIR/disk.img"
DISK_DIR="$PROJECT_DIR/disk"
MOUNT_POINT="/tmp/diskimg"

SUDO_PASSWORD="198314qwe"

echo "=== Creating disk image ==="

cd "$PROJECT_DIR"

IMAGE_SIZE=$((64 * 1024 * 1024))

if [ -f "$DISK_IMG" ]; then
    echo "Removing existing disk image..."
    rm -f "$DISK_IMG"
fi

echo "Creating $IMAGE_SIZE byte disk image..."
dd if=/dev/zero of="$DISK_IMG" bs=1M count=64 status=none

echo "Formatting disk image as FAT32..."
mkfs.vfat -F 32 "$DISK_IMG" > /dev/null

echo "Mounting disk image..."
mkdir -p "$MOUNT_POINT"
echo "$SUDO_PASSWORD" | sudo -S mount -o loop "$DISK_IMG" "$MOUNT_POINT"

echo "Copying files to disk image..."
echo "$SUDO_PASSWORD" | sudo -S cp -r "$DISK_DIR"/* "$MOUNT_POINT/"

echo "Unmounting disk image..."
echo "$SUDO_PASSWORD" | sudo -S umount "$MOUNT_POINT"
rmdir "$MOUNT_POINT"

echo "Disk image created: $DISK_IMG"