#!/bin/bash

# Define a function that sends messages to stderr.
errcho() {
  echo "$@" 1>&2;
}

# Check if fakeroot command is available
if ! command -v fakeroot > /dev/null 2>&1; then
  errcho "[ERROR] fakeroot command not found. Install the fakeroot package.";
  exit 1
fi

# Check if dpkg-deb command is available
if ! command -v dpkg-deb > /dev/null 2>&1; then
  errcho "[ERROR] dpkg-deb command not found. dpkg package contains it. Are you not running this script on a Debian based system?";
  exit 1
fi

# Get the directory of this script
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

# Check if the spring boot jar is in the correct location
if [ ! -f $DIR/package/opt/fs-spring-boot-kamal/app/fs-spring-boot-kamal.jar ]; then
  errcho "[ERROR] Jar file missing: $DIR/package/opt/fs-spring-boot-kamal/app/fs-spring-boot-kamal.jar"
  errcho "[ERROR] Run this build script only after placing the jar file in that location."
  exit 1
fi

# Remove the deb files found inside DIR. Prompt the user before deleting.
if ls $DIR/*.deb 1> /dev/null 2>&1; then
  rm -i $DIR/*.deb
fi

# Build the deb package
fakeroot dpkg-deb --build $DIR/package $DIR