#!/bin/bash

# -C          : Prevent overwriting existing files when redirecting output.
#               - Helps to avoid accidentally overwriting files when using
#                 redirection operators like > or >> in the script.
# -e          : Exit the script if any command returns a non-zero status.
#               - Ensures the script stops on the first error encountered.
# -u          : Exit the script if an undefined variable is used.
#               - Prevents running commands with unintended variables.
# -o pipefail : Change pipeline exit status to the last non-zero exit code
#               in the pipeline, or zero if all commands succeed.
#               - Ensures proper error handling in pipelines.
# -x          : (Optional) Enable command tracing for easier debugging.
#               - Uncomment this option to debug the script.
set -Ceuo pipefail

# Ensure UTF-8 encoding for special characters
export LC_ALL=C.UTF-8
export LANG=C.UTF-8

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
OS_NAME="$(uname -s)"

# ----------------------------------------------------------------
# utils
# ----------------------------------------------------------------
yellow='\033[1;33m'
reset='\033[0m'

request_admin_privileges() {
  if [ "${CI:-false}" = "true" ]; then
    return
  fi

  echo -e "- 👨🏻‍🚀 Please enter your password to grant sudo access for this operation"
  sudo -v

  # Temporarily increase sudo's timeout until the process has finished
  (
    while true; do
      sudo -n true
      sleep 60
      kill -0 "$$" || exit
    done
  ) 2> /dev/null &
}

# This function installs the Xcode Command Line Tools if they are not already installed.
#
# @See
# https://gist.github.com/mokagio/b974620ee8dcf5c0671f
# http://apple.stackexchange.com/questions/107307/how-can-i-install-the-command-line-tools-completely-from-the-command-line
install_xcode_cli_tools() {
  echo -e "👨🏻‍🚀 Install Xcode CLI tools"
  echo "- 👨🏻‍🚀 Checking Xcode CLI tools..."

  # Check if Xcode CLI tools are already installed by trying to print the SDK path.
  if xcode-select -p &> /dev/null; then
    echo "- 👨🏻‍🚀 Xcode CLI tools are already installed"
  else
    echo "- 👨🏻‍🚀 Xcode CLI tools not found. Installing them..."
    TEMP_FILE="/tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress"
    touch "${TEMP_FILE}"

    CLI_TOOLS=$(softwareupdate -l \
      | grep "\*.*Command Line" \
      | tail -n 1 | sed 's/^[^C]* //')

    echo "- 👨🏻‍🚀 Installing: ${CLI_TOOLS}"
    softwareupdate -i "${CLI_TOOLS}" --verbose

    rm "${TEMP_FILE}"
  fi

  echo -e "👨🏻‍🚀 Xcode CLI tools are ready to go 🎉"
}

open_config_apps() {
  if [ "${CI:-false}" = "true" ]; then
    echo "Running in CI environment - skipping app opening"
    return
  fi

  echo "👨🏻‍🚀 Open the apps that needs to be configured"
  open -b com.apple.systempreferences
  open "/Applications/Google Drive.app"
  open "/Applications/Google Chrome.app"
  open "/Applications/Raycast.app"
  open "/Applications/1Password.app"
  open "/Applications/Karabiner-Elements.app"
  open /users
  open https://github.com/nozomiishii/dotfiles
  echo "👨🏻‍🚀 Please refer to github to set up the launched application"
}

# ----------------------------------------------------------------
# Homebrew (macOS & Linux)
# ----------------------------------------------------------------
install_homebrew() {
  if ! command -v brew >/dev/null 2>&1; then
    echo -e "🍺 Installing Homebrew for ${OS_NAME}"
    # Non-interactive install (no prompt) and auto-confirm
    NONINTERACTIVE=1 \
      /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
  else
    echo -e "🍺 Homebrew already installed — updating Homebrew and installed packages"
    brew update --force --quiet
    brew upgrade --quiet
  fi

  if [[ "$OS_NAME" == "Darwin" ]]; then
    eval "$(/opt/homebrew/bin/brew shellenv)"
  fi

  if [[ "${OS_NAME}" == "Linux" ]]; then
    eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
  fi

  # Bundle packages from Brewfile (common for macOS & Linux)
  brew bundle \
  --verbose \
  --cleanup \
  --file="$SCRIPT_DIR/Brewfile"

  brew cleanup --verbose
}

# ----------------------------------------------------------------
# zsh
# ----------------------------------------------------------------
install_zsh() {
  echo -e "🐚 Installing zsh"

  sudo apt update && sudo apt install -y zsh
}

# ----------------------------------------------------------------
# Symlink
# ----------------------------------------------------------------
symlink_files() {
  echo -e "🐂 stow"

  echo "Pre-removing known conflicting files..."
  rm -f "$HOME/.gitconfig"
  rm -f "$HOME/.zprofile"
  rm -f "$HOME/.zshrc"
  rm -f "$HOME/.bashrc"

  # Symlink dotfiles using stow with verbose output and restow mode
  # --restow removes existing symlinks and recreates them to ensure clean state
  stow --verbose --restow --target="$HOME" home
}

# ----------------------------------------------------------------
# Install
# ----------------------------------------------------------------
echo -e "${yellow}"
printf '%s\n' \
  "👨🏻‍🚀 Nozomiishii Doting Dotfiles" \
  "   Get ready for your ultimate Mac setup!" \
  "" \
  "██████╗░░█████╗░████████╗███████╗██╗██╗░░░░░███████╗░██████╗" \
  "██╔══██╗██╔══██╗╚══██╔══╝██╔════╝██║██║░░░░░██╔════╝██╔════╝" \
  "██║░░██║██║░░██║░░░██║░░░█████╗░░██║██║░░░░░█████╗░░╚█████╗░" \
  "██║░░██║██║░░██║░░░██║░░░██╔══╝░░██║██║░░░░░██╔══╝░░░╚═══██╗" \
  "██████╔╝╚█████╔╝░░░██║░░░██║░░░░░██║███████╗███████╗██████╔╝" \
  "╚═════╝░░╚════╝░░░░╚═╝░░░╚═╝░░░░░╚═╝╚══════╝╚══════╝╚═════╝░" \
  ""
echo -e "${reset}"

if [[ "$OS_NAME" == "Darwin" ]]; then
  request_admin_privileges
  install_xcode_cli_tools
  install_homebrew
  symlink_files
  open_config_apps
fi

if [[ "$OS_NAME" == "Linux" ]]; then
  install_zsh
  install_homebrew
  symlink_files
fi

echo -e "${yellow}"
printf '%s\n' \
  "" \
  "" \
  "" \
  "░█████╗░░█████╗░███╗░░██╗░██████╗░██████╗░░█████╗░████████╗░██████╗██╗" \
  "██╔══██╗██╔══██╗████╗░██║██╔════╝░██╔══██╗██╔══██╗╚══██╔══╝██╔════╝██║" \
  "██║░░╚═╝██║░░██║██╔██╗██║██║░░██╗░██████╔╝███████║░░░██║░░░╚█████╗░██║" \
  "██║░░██╗██║░░██║██║╚████║██║░░╚██╗██╔══██╗██╔══██║░░░██║░░░░╚═══██╗╚═╝" \
  "╚█████╔╝╚█████╔╝██║░╚███║╚██████╔╝██║░░██║██║░░██║░░░██║░░░██████╔╝██╗" \
  "░╚════╝░░╚════╝░╚═╝░░╚══╝░╚═════╝░╚═╝░░╚═╝╚═╝░░╚═╝░░░╚═╝░░░╚═════╝░╚═╝" \
  "" \
  "" \
  "🎉 All dotfiles installation is now complete 🎉" \
  "" \
  "" \
  "👨🏻‍🚀 Restart your mac to reflect the settings. Happy Coding🫰🏻" \
  "" \
  "    run:" \
  "      sudo reboot" \
  "" \
  "" \
  ""
echo -e "${reset}"