#!/bin/bash

# Author            : Eshan Roy <eshan@snigdhaos.or>
# Author URL        : https://eshanized.github.io/

# Function to log messages
log_message() {
    echo "[INFO] $1"
}

# Function to log error messages
log_error() {
    echo "[ERROR] $1" >&2
}

# Main Execution
echo
log_message "Start Execution..."
echo

# Loop through possible display managers
for package in gdm sddm; do
  if pacman -Qq $package > /dev/null; then
    # Check if the symlink already exists
    if [ -L /etc/systemd/display-manager.service ]; then
      log_message "Symlink /etc/systemd/display-manager.service already exists. Skipping creation."
    else
      log_message "Setting $package as the default display manager."
      if ln -sf /usr/lib/systemd/system/$package.service /etc/systemd/display-manager.service; then
        log_message "$package service symlink created successfully."
      else
        log_error "Failed to create symlink for $package."
        exit 1
      fi
    fi
    # Break after the first valid package is found and processed
    break
  fi
done

log_message "End Execution!"
echo