chore: parse arguments flexibly install.sh

Author: Chemaclass

docs/installation.md

@@ -31,14 +31,13 @@ https://github.com/TypedDevs/bashunit/releases/download/{{ pkg.version }}/checks
 
 #### Define custom tag and folder
 
-The installation script can receive arguments in two forms:
+The installation script can receive arguments (in any order):
 
 ```bash
 curl -s https://bashunit.typeddevs.com/install.sh | bash -s [dir] [version]
-curl -s https://bashunit.typeddevs.com/install.sh | bash -s [version]
 ```
 - `[dir]`: the destiny directory to save the executable bashunit; `lib` by default
-- `[version]`: the [release](https://github.com/TypedDevs/bashunit/releases) to download, for instance `{{ pkg.version }}`; `latest` by default. When only `[version]` is provided and follows the `N.N.N` pattern, it will be installed in the `lib` directory.
+- `[version]`: the [release](https://github.com/TypedDevs/bashunit/releases) to download, for instance `{{ pkg.version }}`; `latest` by default.
 
 ::: tip
 You can use `beta` as `[version]` to get the next non-stable preview release.

install.sh

@@ -63,14 +63,32 @@ function install() {
 ######### MAIN ##########
 #########################
 
-DIR=${1-lib}
-VERSION=${2-latest}
-
-# When only one argument is provided, treat it as the version if it matches
-# the pattern N.N.N (e.g. 0.20.0)
-if [[ $# -eq 1 && $DIR =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
-  VERSION=$DIR
-  DIR="lib"
+# Defaults
+DIR="lib"
+VERSION="latest"
+
+function is_version() {
+  [[ "$1" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ || "$1" == "latest" || "$1" == "beta" ]]
+}
+
+# Parse arguments flexibly
+if [[ $# -eq 1 ]]; then
+  if is_version "$1"; then
+    VERSION="$1"
+  else
+    DIR="$1"
+  fi
+elif [[ $# -eq 2 ]]; then
+  if is_version "$1"; then
+    VERSION="$1"
+    DIR="$2"
+  elif is_version "$2"; then
+    DIR="$1"
+    VERSION="$2"
+  else
+    echo "Invalid arguments. Expected version or directory." >&2
+    exit 1
+  fi
 fi
 
 BASHUNIT_GIT_REPO="https://github.com/TypedDevs/bashunit"