Refactor install.sh to add latest version fetching and improve installation process

Author: Thavarshan

bin/install.sh

@@ -22,6 +22,73 @@
         fi
     }
 
+    phpvm_latest_version() {
+        # Fetch the latest version from GitHub, if it exists
+        latest_version=$(curl -s https://api.github.com/repos/Thavarshan/phpvm/releases/latest | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
+
+        # Default to 'main' if no release is found
+        if [ -z "$latest_version" ]; then
+            phpvm_echo "main"
+        else
+            phpvm_echo "$latest_version"
+        fi
+    }
+
+    phpvm_download() {
+        if phpvm_has "curl"; then
+            curl --fail --compressed -q "$@"
+        elif phpvm_has "wget"; then
+            ARGS=$(phpvm_echo "$@" | command sed -e 's/--progress-bar /--progress=bar /' \
+                -e 's/--compressed //' -e 's/--fail //' -e 's/-L //' -e 's/-I /--server-response /' \
+                -e 's/-s /-q /' -e 's/-sS /-nv /' -e 's/-o /-O /' -e 's/-C - /-c /')
+            eval wget $ARGS
+        fi
+    }
+
+    install_phpvm_from_git() {
+        local INSTALL_DIR
+        INSTALL_DIR="$(phpvm_install_dir)"
+        local PHPVM_VERSION
+        PHPVM_VERSION="${PHPVM_INSTALL_VERSION:-$(phpvm_latest_version)}"
+
+        if [ -d "$INSTALL_DIR/.git" ]; then
+            phpvm_echo "=> phpvm is already installed in $INSTALL_DIR, updating using git"
+            command printf '\r=> '
+        else
+            phpvm_echo "=> Downloading phpvm from git to '$INSTALL_DIR'"
+            mkdir -p "${INSTALL_DIR}"
+            command git clone "https://github.com/Thavarshan/phpvm.git" --depth=1 "${INSTALL_DIR}" || {
+                phpvm_echo >&2 'Failed to clone phpvm repo. Please report this!'
+                exit 1
+            }
+        fi
+
+        # Checkout the latest release or 'main' if no releases
+        command git -C "$INSTALL_DIR" checkout "$PHPVM_VERSION" || {
+            phpvm_echo >&2 "Failed to checkout the version $PHPVM_VERSION. Please report this!"
+            exit 1
+        }
+
+        phpvm_echo "=> Cleaning up git repository"
+        command git -C "$INSTALL_DIR" gc --auto --aggressive --prune=now || {
+            phpvm_echo >&2 'Failed to clean up git repository. Please report this!'
+            exit 1
+        }
+
+        if ! phpvm_has "node"; then
+            phpvm_echo "Node.js is required to run phpvm. Please install Node.js and try again."
+            exit 1
+        fi
+
+        phpvm_echo "=> Installing Node.js dependencies"
+        command npm install --prefix "$INSTALL_DIR" || {
+            phpvm_echo >&2 'Failed to install Node.js dependencies. Please report this!'
+            exit 1
+        }
+
+        phpvm_create_launcher
+    }
+
     phpvm_create_launcher() {
         local INSTALL_DIR
         INSTALL_DIR="$(phpvm_install_dir)"