#!/usr/bin/env bash
#
# Adapted from https://gist.github.com/xqm32/17777d035930d622d0ff7530bfab61fd
#

set -euo pipefail

# Enable verbosity with VERBOSE=1
VERBOSE="${VERBOSE:-0}"

A_DIR="$HOME/.config/alacritty"

# Function to print usage information
usage()
{
  echo "Usage: $0 <theme>"
  echo "Available themes: dark, night, day"
  exit 1
}

# Function to print messages if VERBOSE is enabled
# $1 - message (string)
msg()
{
  [[ "$VERBOSE" -eq 1 ]] && echo "$1"
}

# Function to set the alacritty theme
# $1 - theme (string)
set_alacritty_theme()
{
  local theme=$1
  msg "Setting alacritty theme to $theme"
  cp -f "$A_DIR/theme-$theme.toml" "$A_DIR/theme-active.toml"
}

# Function to notify alacritty about the changes
notify_alacritty()
{
  msg "Notifying alacritty about the changes"
  touch "$A_DIR/alacritty.toml"
}

# Main function
main()
{
  if [ "$#" -ne 1 ]; then
    usage
  fi

  local alacritty_theme=$1

  case "$alacritty_theme" in
    day)
      set_alacritty_theme "day"
      ;;
    *)
      set_alacritty_theme "night"
      ;;
  esac

  notify_alacritty
  msg "Theme set successfully!"
}

main "$@"