Merge pull request #5 from dotenvx/download-url

display download_url

install.sh

@@ -38,9 +38,9 @@ directory() {
 
 is_directory_writable() {
   # check installation directory is writable
-  if [ ! -w "$(directory)" ] && [ "$(id -u)" -ne 0 ]; then
+  if [ ! -w "$(directory)" ]; then
     echo "[INSTALLATION_FAILED] the installation directory [$(directory)] is not writable by the current user"
-    echo "? run as root [sudo $0] or choose a writable directory like your current directory [$0 directory=.]"
+    echo "? run as root [sudo $0] or choose a writable directory like your current directory [$0 --directory=.]"
 
     return 1
   fi
@@ -49,11 +49,13 @@ is_directory_writable() {
 }
 
 is_curl_installed() {
-  if ! command -v curl >/dev/null 2>&1; then
-    echo "[INSTALLATION_FAILED] curl is required and appears to not be installed"
-    echo "? install curl and try again"
+  local curl_path="$(which_curl)"
 
-    exit 1
+  if [ -z "$curl_path" ]; then
+    echo "[INSTALLATION_FAILED] curl is required and is not installed"
+    echo "? install curl [$(install_curl_command)] and try again"
+
+    return 1
   fi
 
   return 0
@@ -113,29 +115,180 @@ os_arch() {
   return 0
 }
 
-# parse arguments
-for arg in "$@"; do
-  case $arg in
-  directory=* | --directory=*)
-    DIRECTORY="${arg#*=}"
-    ;;
-  help | --help)
-    usage
-    exit 0
-    ;;
-  *)
-    # Unknown option
-    echo "Unknown option: $arg"
-    usage
-    exit 1
-    ;;
-  esac
-done
+filename() {
+  echo "dotenvx-$VERSION-$(os_arch).tar.gz"
+
+  return 0
+}
+
+download_url() {
+  echo "https://github.com/dotenvx/dotenvx/releases/download/v$VERSION/$(filename)"
+
+  return 0
+}
+
+is_ci() {
+  [ -n "$CI" ] && [ $CI != 0 ]
+}
+
+progress_bar() {
+  if $(is_ci); then
+    echo "--no-progress-meter"
+  else
+    echo "--progress-bar"
+  fi
+
+  return 0
+}
+
+install_curl_command() {
+  if command -v apt-get >/dev/null 2>&1; then
+    echo "sudo apt-get update && sudo apt-get install -y curl"
+  elif command -v yum >/dev/null 2>&1; then
+    echo "sudo yum install -y curl"
+  elif command -v brew >/dev/null 2>&1; then
+    echo "brew install curl"
+  elif command -v pkg >/dev/null 2>&1; then
+    echo "sudo pkg install curl"
+  else
+    echo "install curl manually"
+  fi
+
+  return 0
+}
+
+which_curl() {
+  local result
+  result=$(command -v curl 2>/dev/null) # capture the output without displaying it on the screen
+
+  echo "$result"
+
+  return 0
+}
+
+which_dotenvx() {
+  local result
+  result=$(command -v dotenvx 2>/dev/null) # capture the output without displaying it on the screen
+
+  echo "$result"
+
+  return 0
+}
+
+warn_of_any_conflict() {
+  local dotenvx_path="$(which_dotenvx)"
+
+  if [ "$dotenvx_path" != "" ] && [ "$dotenvx_path" != "$(directory)/dotenvx" ]; then
+    echo "[DOTENVX_CONFLICT] conflicting dotenvx found at $dotenvx_path" >&2
+    echo "? we recommend updating your path to include $(directory)" >&2
+  fi
+
+  return 0
+}
+
+is_installed() {
+  local flagged_version="$1"
+  local current_version=$("$(directory)/dotenvx" --version 2>/dev/null || echo "0")
+
+  # if --version flag passed
+  if [ -n "$flagged_version" ]; then
+    if [ "$current_version" = "$flagged_version" ]; then
+      # return true since version already installed
+      return 0
+    else
+      # return false since version not installed
+      return 1
+    fi
+  fi
+
+  # if no version flag passed
+  if [ "$current_version" != "$VERSION" ]; then
+    # return false since latest is not installed
+    return 1
+  fi
+
+  echo "[dotenvx@$current_version] already installed ($(directory)/dotenvx)"
+
+  # return true since version already installed
+  return 0
+}
+
+install_dotenvx() {
+  # 0. override version
+  VERSION="${1:-$VERSION}"
+
+  # 1. setup tmpdir
+  local tmpdir=$(command mktemp -d)
+
+  # 2. download
+  curl $(progress_bar) --fail -L --proto '=https' -o "$tmpdir/$(filename)" "$(download_url)"
+
+  # 3. decompress to install directory
+  tar xz -C $(directory) -f "$tmpdir/$(filename)"
 
-is_directory_writable
-is_curl_installed
-is_os_supported
-is_arch_supported
+  # 4. clean up
+  rm -r "$tmpdir"
+
+  # warn of any conflict
+  warn_of_any_conflict
+
+  # let user know
+  echo "[dotenvx@$VERSION] installed successfully ($(directory)/dotenvx)"
+
+  return 0
+}
+
+main() {
+  # parse arguments
+  for arg in "$@"; do
+    case $arg in
+    version=* | --version=*)
+      VERSION="${arg#*=}"
+      ;;
+    directory=* | --directory=*)
+      DIRECTORY="${arg#*=}"
+      ;;
+    help | --help)
+      usage
+      return 0
+      ;;
+    *)
+      # Unknown option
+      echo "Unknown option: $arg"
+      usage
+      return 1
+      ;;
+    esac
+  done
+
+  is_directory_writable
+  is_curl_installed
+  is_os_supported
+  is_arch_supported
+
+  # install logic
+  if [ -n "$VERSION" ]; then
+    # Check if the specified version is already installed
+    if is_installed "$VERSION"; then
+      echo "[dotenvx@$VERSION] already installed ($(directory)/dotenvx)"
+
+      return 0
+    else
+      install_dotenvx "$VERSION"
+    fi
+  else
+    if is_installed; then
+      echo "[dotenvx@$VERSION] already installed ($(directory)/dotenvx)"
+
+      return 0
+    else
+      install_dotenvx
+    fi
+  fi
+}
 
-# echo "os: $(os) arch: $(arch)"
-echo "hello"
+# execute main only if the script is run directly, not sourced
+if [ "${BASH_SOURCE[0]}" = "$0" ]; then
+  main "$@"
+  exit $?
+fi