Added setup script, updated README and help command

README.md

@@ -9,6 +9,16 @@ This is a very simple static webserver which hot-reloads your web-browser on cha
 ## Usage
 `wd-40 s|serve <relative directory>` or `wd-40 s|serve`
 
+## Getting started
+```bash
+go install github.com/baalimago/wd-40@latest
+```
+
+You may also use the setup script:
+```bash
+curl -fsSL https://raw.githubusercontent.com/baalimago/wd-40/main/setup.sh | sh
+```
+
 ## Architecture
 1. First the content of the website is copied to a temporary directory
 1. At every file, the MIME type is inspected, if it's text/html, a `delta-streamer.js` script is injected

cmd/setup.go

@@ -21,6 +21,9 @@ func Parse(args []string) (Command, error) {
 	}
 	cmdCandidate := ""
 	for _, arg := range args[1:] {
+		if isHelp(arg) {
+			return nil, ErrHelpful
+		}
 		isFlag := strings.HasPrefix(arg, "-")
 		if isFlag {
 			continue
@@ -41,6 +44,10 @@ func Parse(args []string) (Command, error) {
 	return nil, ArgNotFoundError(cmdCandidate)
 }
 
+func isHelp(s string) bool {
+	return s == "-h" || s == "-help" || s == "h" || s == "help"
+}
+
 func formatCommandDescriptions() string {
 	var buf bytes.Buffer
 	w := tabwriter.NewWriter(&buf, 0, 0, 2, ' ', 0)

main.go

@@ -19,7 +19,11 @@ func printHelp(command cmd.Command, err error, printUsage cmd.UsagePrinter) int
 	} else if errors.Is(err, cmd.ErrNoArgs) {
 		printUsage()
 	} else if errors.Is(err, cmd.ErrHelpful) {
-		fmt.Println(command.Help())
+		if command != nil {
+			fmt.Println(command.Help())
+		} else {
+			printUsage()
+		}
 		return 0
 	} else {
 		ancli.PrintfErr("unknown error: %v", err.Error())

setup.sh

@@ -0,0 +1,87 @@
+#!/bin/sh
+
+# Function to get the latest release download URL for the specified OS and architecture
+get_latest_release_url() {
+  repo="baalimago/wd-40"
+  os="$1"
+  arch="$2"
+
+  # Fetch the latest release data from GitHub API
+  release_data=$(curl -s "https://api.github.com/repos/$repo/releases/latest")
+
+  # Extract the asset URL for the specified OS and architecture
+  download_url=$(echo "$release_data" | grep "browser_download_url" | grep "$os" | grep "$arch" | cut -d '"' -f 4)
+
+  echo "$download_url"
+}
+
+# Detect the OS
+case "$(uname)" in
+  Linux*)
+    os="linux"
+    ;;
+  Darwin*)
+    os="darwin"
+    ;;
+  *)
+    echo "Unsupported OS: $(uname)"
+    exit 1
+    ;;
+esac
+
+# Detect the architecture
+arch=$(uname -m)
+case "$arch" in
+  x86_64)
+    arch="amd64"
+    ;;
+  armv7*)
+    arch="arm"
+    ;;
+  aarch64|arm64)
+    arch="arm64"
+    ;;
+  i?86)
+    arch="386"
+    ;;
+  *)
+    echo "Unsupported architecture: $arch"
+    exit 1
+    ;;
+esac
+
+printf "detected os: '%s', arch: '%s'\n" "$os" "$arch"
+
+# Get the download URL for the latest release
+printf "finding asset url..."
+download_url=$(get_latest_release_url "$os" "$arch")
+printf "OK!\n"
+
+# Download the binary
+tmp_file=$(mktemp)
+
+printf "downloading binary..."
+if ! curl -s -L -o "$tmp_file" "$download_url"; then
+  echo
+  echo "Failed to download the binary."
+  exit 1
+fi
+printf "OK!\n"
+
+printf "setting file executable file permissions..."
+# Make the binary executable
+
+if ! chmod +x "$tmp_file"; then
+  echo
+  echo "Failed to make the binary executable. Try running the script with sudo."
+  exit 1
+fi
+printf "OK!\n"
+
+# Move the binary to /usr/local/bin and handle permission errors
+if ! mv "$tmp_file" /usr/local/bin/wd-40; then
+  echo "Failed to move the binary to /usr/local/bin/wd-40, see error above. Try running the script with sudo, or run 'mv $tmp_file <desired-position>'."
+  exit 1
+fi
+
+echo "wd-40 installed successfully in /usr/local/bin, try it out with 'wd-40 h'"