evmrup

#!/usr/bin/env bash
set -e

# -----------------------------------------------------------
# Forked from Foundry.
# https://github.com/foundry-rs/foundry/tree/master/foundryup
# -----------------------------------------------------------

# Define variables
EVMR_DIR="${HOME}/.evm-runners"
EVMR_BIN_DIR="${EVMR_DIR}/bin"
ENV_FILE="${EVMR_DIR}/.env"

APP_NAME="evm-runners"
APP_NAME_ALT="evmr"

main() {
  need_cmd curl
 
  PLATFORM="$(uname -s)"
  case $PLATFORM in
    Linux)
      PLATFORM="linux"
      ;;
    Darwin)
      PLATFORM="darwin"
      ;;
    *)
      err "unsupported platform: $PLATFORM"
      ;;
  esac

  # Determine architecture
  ARCH="$(uname -m)"

  if [ "$ARCH" = "x86_64" ]; then
    # Redirect stderr to /dev/null to avoid printing errors if non Rosetta.
    if [ "$(sysctl -n sysctl.proc_translated 2>/dev/null)" = "1" ]; then
      ARCH="arm64" # Rosetta
    else
      ARCH="amd64" # Intel
    fi
  elif [ "$ARCH" = "aarch64" ] || [ "$ARCH" = "arm64" ]; then
    ARCH="arm64" # Arm
  else
    ARCH="amd64" # Amd
  fi

  # Determine latest version
  VERSION="$(curl -s https://api.github.com/repos/ethernautdao/evm-runners-cli/releases/latest | grep -oP '"tag_name": "\K(.*)(?=")')"
  if [ -z "$VERSION" ]; then
    err "failed to determine latest version"
  fi

  # Download release binary
  DOWNLOAD_URL="https://github.com/ethernautdao/evm-runners-cli/releases/download/$VERSION/$APP_NAME-$PLATFORM-$ARCH"

  say "Installing evm-runners version $VERSION for $PLATFORM-$ARCH"

  # Download binary, make it executable, and move it to the bin directory
  ensure curl -# -L $DOWNLOAD_URL -o $APP_NAME
  ensure chmod +x $APP_NAME
  ensure mv $APP_NAME $EVMR_BIN_DIR
  # create evmr symlink
  ensure ln -sf $EVMR_BIN_DIR/$APP_NAME $EVMR_BIN_DIR/$APP_NAME_ALT

  # Create .env file and add/update the EVMR_VERSION environment variable
  if [ ! -f "$ENV_FILE" ]; then
    # If the .env file doesn't exist, create it and add EVMR_VERSION
    echo "EVMR_VERSION=$VERSION" > "$ENV_FILE"
  elif grep -q "^EVMR_VERSION=" "$ENV_FILE"; then
    # If EVMR_VERSION exists, update it
    sed -i "s/^EVMR_VERSION=.*/EVMR_VERSION=$VERSION/" "$ENV_FILE"
  else
    # If EVMR_VERSION doesn't exist, append it to the file
    echo "EVMR_VERSION=$VERSION" >> "$ENV_FILE"
  fi

  echo && say "$APP_NAME version $VERSION installed successfully!"
  echo && say "If this is your first install, start a new terminal session to use evm-runners."
  say "Then run 'evmr help', or alternatively 'evm-runners help', to get started."
  echo && say "To update evm-runners in the future, just run 'evmrup' again."
}

say() {
  printf 'evmrup: %s\n' "$1"
}

warn() {
  say "warning: ${1}" >&2
}

err() {
  say "$1" >&2
  exit 1
}

need_cmd() {
  if ! check_cmd "$1"; then
    err "need '$1' (command not found)"
  fi
}

check_cmd() {
  command -v "$1" > /dev/null 2>&1
}

# Run a command that should never fail. If the command fails execution
# will immediately terminate with an error showing the failing
# command.
ensure() {
  if ! "$@"; then err "command failed: $*"; fi
}

main "$@" || exit 1