#!/bin/bash
# |--------------------------------------------------------------------------
# | APP_SECRET generator (c) 2019 Laravel Holdings LLC
# |
# | MIT License
# |
# | Permission is hereby granted, free of charge, to any person obtaining a copy
# | of this software and associated documentation files (the "Software"), to deal
# | in the Software without restriction, including without limitation the rights
# | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# | copies of the Software, and to permit persons to whom the Software is
# | furnished to do so.
# |--------------------------------------------------------------------------
# | Script to generate a secure 32-byte (256-bit) application secret in hexadecimal format.
# --- Configuration ---
# Number of raw bytes to generate (32 bytes = 256 bits)
BYTES_LENGTH=32

# --- Checks ---
# Check if xxd command is available. If not, exit silently with error code.
if ! command -v xxd &> /dev/null; then
    exit 1 # Exit without output
fi

# Check if /dev/urandom is accessible. If not, exit silently with error code.
if [ ! -r /dev/urandom ]; then
    exit 1 # Exit without output
fi

# --- Secret Generation and Output ---
# Generate random bytes from /dev/urandom, convert to hex, and remove the trailing newline.
# The result is printed directly to stdout.
head -c "${BYTES_LENGTH}" /dev/urandom | xxd -p | tr -d '\n'

exit 0