#!/bin/sh
#
# Radicle isntallation script.
#
set -e

url() {
  echo "https://files.radicle.xyz/$1/latest/radicle-$1.tar.gz"
}

info() {
  printf "\033[36m$*\033[0m\n"
}

success() {
  echo
  printf "\033[32m✓\033[0m Radicle has been installed successfully. Run \`rad auth\` to get started.\n"
}

fatal() {
  printf "\033[31merror\033[0m: $*\n" >&2
  exit 1
}

target() {
  TARGET=""

  case "$(uname)/$(uname -m)" in
  Darwin/arm64)
    TARGET="aarch64-apple-darwin" ;;
  Darwin/x86_64)
    TARGET="x86_64-apple-darwin" ;;
  Linux/arm64|Linux/aarch64)
    TARGET="aarch64-unknown-linux-musl" ;;
  Linux/x86_64)
    TARGET="x86_64-unknown-linux-musl" ;;
  *)
    fatal "Your operating system is currently unsupported. Sorry!" ;;
  esac
  echo $TARGET
}

tempdir() {
  if [ -n "$TMPDIR" ]; then
    echo "$TMPDIR"
  elif [ -d "/tmp" ]; then
    echo "/tmp"
  else
    fatal "Could not locate temporary directory"
  fi
}

in_path() {
  IFS=":"

  for dir in $PATH; do
    if [ "$dir" = "$1" ]; then
      return 0 # The path is in $PATH
    fi
  done

  return 1 # The path is not in $PATH
}

echo
echo "Welcome to Radicle 🌞"
echo

RAD_HOME=${RAD_HOME:-"$HOME/.radicle"}
RAD_PATH=${RAD_PATH:-"$RAD_HOME/bin"}
SHELL=${SHELL:-"/bin/sh"}

info "Detecting operating system..."
TARGET=$(target)

if ! command -v tar >/dev/null 2>&1; then
  fatal "Please install 'tar' and try again"
fi

if ! command -v curl >/dev/null 2>&1; then
  fatal "Please install 'curl' and try again"
fi

info "Installing radicle into '$RAD_PATH'..."
mkdir -p "$RAD_PATH"
curl -# -L "$(url "$TARGET")" | tar -xz --strip-components=1 -C "$RAD_PATH"
chmod +x \
  $RAD_PATH/radicle-node \
  $RAD_PATH/radicle-httpd \
  $RAD_PATH/rad \
  $RAD_PATH/git-remote-rad

# If radicle is not in $PATH, add it here.
if ! in_path $RAD_PATH; then
  case $SHELL in
    */zsh)
      PROFILE=$HOME/.zshrc ;;
    */bash)
      PROFILE=$HOME/.bashrc ;;
    */fish)
      PROFILE=$HOME/.config/fish/config.fish ;;
    */csh)
      PROFILE=$HOME/.cshrc ;;
    *)
      PROFILE=$HOME/.profile ;;
  esac

  info "Configuring PATH in '$PROFILE'..."
  echo                                    >> "$PROFILE"
  echo "# Radicle binaries."              >> "$PROFILE"
  echo "export PATH=\"\$PATH:$RAD_PATH\"" >> "$PROFILE"

  success

  # Ensure that the current shell has the updated PATH.
  export PATH="$PATH:$RAD_PATH"
  exec "$SHELL"
fi

success