#!/bin/bash

# Function to load environment variables from a .env file
load_dotenv() {
  local env_file="$1"

  if [[ ! -f "$env_file" ]]; then
    echo "Warning: .env file not found at '$env_file'"
    return 1
  fi

  echo "Loading environment variables from $env_file..."

  # Read the .env file line by line
  while IFS='=' read -r key value || [[ -n "$key" ]]; do
    # Skip comments and empty lines
    [[ "$key" =~ ^#.* ]] && continue
    [[ -z "$key" ]] && continue

    # Remove leading/trailing whitespace and quotes from key and value
    key=$(echo "$key" | xargs)
    value=$(echo "$value" | xargs)
    value=$(echo "$value" | sed -e 's/^"//' -e 's/"$//' -e "s/^'//" -e "s/'$//")

    # Export the variable
    if [[ -n "$key" ]]; then
      export "$key=$value"
      # echo "Exported: $key=$value" # Uncomment for debugging
    fi
  done < "$env_file"
  echo "Environment variables loaded."
}

# Example usage:
# Create a dummy .env file for demonstration
cat << EOF > .env.example
DB_HOST=localhost
DB_PORT=5432
DB_USER="myuser"
DB_PASSWORD='mypassword123'
API_KEY=some_secret_key
# This is a comment
EMPTY_VAR=
EOF

load_dotenv ".env.example"

echo "DB_HOST: $DB_HOST"
echo "API_KEY: $API_KEY"
echo "EMPTY_VAR: $EMPTY_VAR"