feat(installer): add install bash script

README.md

@@ -64,6 +64,23 @@ Download the latest release from the [Releases page](https://github.com/ethpanda
 ./xatu <server|sentry|discovery|mimicry> --config your-config.yaml
 ```
 
+### Install via bash script
+
+View the install script [here](./installer.sh). You can run the following to install:
+```
+curl -sL https://raw.githubusercontent.com/ethpandaops/xatu/master/install.sh | bash
+```
+
+To change the install location of the binary you can run and change the `BASE_INSTALL_PATH` variable:
+```
+curl -sL https://raw.githubusercontent.com/ethpandaops/xatu/master/install.sh | BASE_INSTALL_PATH=~/.local/bin bash
+```
+
+To uninstall the binary you can run:
+```
+curl -sL https://raw.githubusercontent.com/ethpandaops/xatu/master/install.sh | bash -s uninstall
+```
+
 ### Docker
 
 Available as a docker image at [ethpandaops/xatu](https://hub.docker.com/r/ethpandaops/xatu/tags)

install.sh

@@ -0,0 +1,152 @@
+#!/bin/bash
+
+set -e
+
+error() {
+  echo "$1" >&2
+  exit 1
+}
+
+info() {
+  echo "$1"
+}
+
+version_ge() {
+  [ "$(printf '%s\n' "$1" "$2" | sort -V | tail -n1)" = "$1" ]
+}
+
+OS="$(uname | tr '[:upper:]' '[:lower:]')"
+case "$OS" in
+  darwin*) OS="darwin" ;;
+  linux*) OS="linux" ;;
+  *) error "Unsupported OS: $OS" ;;
+esac
+info "Detected OS: $OS"
+
+ARCH="$(uname -m)"
+case "$ARCH" in
+  x86_64 | amd64) ARCH="amd64" ;;
+  arm64 | aarch64) ARCH="arm64" ;;
+  *) error "Unsupported architecture: $ARCH" ;;
+esac
+info "Detected Architecture: $ARCH"
+
+REPO_OWNER="ethpandaops"
+REPO_NAME="xatu"
+BASE_INSTALL_PATH="${BASE_INSTALL_PATH:-/usr/local/bin}"
+STANDARD_BINARY_NAME="${REPO_NAME}"
+INSTALL_PATH="${BASE_INSTALL_PATH}/${STANDARD_BINARY_NAME}"
+
+fetch_latest_tag() {
+  info "Fetching the latest release information from GitHub..."
+  LATEST_RELEASE_JSON=$(curl -s "https://api.github.com/repos/${REPO_OWNER}/${REPO_NAME}/releases/latest") || error "Failed to fetch release information."
+
+  TAG=$(echo "$LATEST_RELEASE_JSON" | grep -oP '"tag_name":\s*"\K(.*)(?=")') || error "Failed to parse release tag."
+  [[ -z "$TAG" ]] && error "Release tag not found."
+  info "Latest release tag: $TAG"
+}
+
+get_installed_version() {
+  if command -v ${INSTALL_PATH} >/dev/null 2>&1; then
+    VERSION_OUTPUT=$(${INSTALL_PATH} version 2>/dev/null) || {
+      info "xatu is installed but failed to retrieve version information."
+      return 1
+    }
+
+    if [[ $VERSION_OUTPUT =~ Xatu/v([0-9]+\.[0-9]+\.[0-9]+)-([a-f0-9]+) ]]; then
+      INSTALLED_VERSION="${BASH_REMATCH[1]}"
+      info "Installed xatu version: $INSTALLED_VERSION"
+      return 0
+    else
+      info "Failed to parse xatu version from output: $VERSION_OUTPUT"
+      return 1
+    fi
+  else
+    info "xatu is not installed or not found in PATH."
+    return 1
+  fi
+}
+
+check_existing_installation() {
+  if which xatu >/dev/null 2>&1; then
+    if [ "$(which xatu)" != "$INSTALL_PATH" ]; then
+      info "xatu is already installed at $(which xatu) but expecting it at $INSTALL_PATH. You might want to remove it."
+    fi
+  fi
+}
+
+check_version() {
+  if get_installed_version; then
+    LATEST_VERSION="${TAG#v}"
+    info "Latest released xatu version: $LATEST_VERSION"
+
+    if version_ge "$INSTALLED_VERSION" "$LATEST_VERSION"; then
+      info "xatu is already up to date (version $INSTALLED_VERSION, location: ${INSTALL_PATH}). Skipping installation."
+      exit 0
+    else
+      info "A newer version of xatu is available (installed: $INSTALLED_VERSION, latest: $LATEST_VERSION). Proceeding with installation."
+    fi
+  else
+    info "xatu is not installed or version could not be determined. Proceeding with installation."
+  fi
+}
+
+uninstall() {
+  if [ -f "$INSTALL_PATH" ]; then
+    info "Uninstalling xatu from $INSTALL_PATH..."
+    sudo rm "$INSTALL_PATH" || error "Failed to remove xatu from $INSTALL_PATH"
+    info "xatu has been successfully uninstalled."
+  else
+    info "xatu is not installed at $INSTALL_PATH. Nothing to uninstall."
+  fi
+  exit 0
+}
+
+if [ "$1" = "uninstall" ]; then
+  uninstall
+fi
+
+check_existing_installation
+fetch_latest_tag
+check_version
+
+ASSET_NAME="${REPO_NAME}_${TAG#v}_${OS}_${ARCH}.tar.gz"
+info "Constructed asset name: $ASSET_NAME"
+
+DOWNLOAD_URL="https://github.com/${REPO_OWNER}/${REPO_NAME}/releases/download/${TAG}/${ASSET_NAME}"
+info "Download URL: $DOWNLOAD_URL"
+
+TMP_DIR=$(mktemp -d) || error "Failed to create temporary directory."
+info "Created temporary directory: $TMP_DIR"
+
+cleanup() {
+  rm -rf "$TMP_DIR"
+}
+trap cleanup EXIT
+
+info "Downloading ${ASSET_NAME}..."
+curl -L -o "${TMP_DIR}/${ASSET_NAME}" "$DOWNLOAD_URL" || error "Failed to download the asset."
+
+info "Extracting the binary..."
+tar -xzf "${TMP_DIR}/${ASSET_NAME}" -C "$TMP_DIR" || error "Failed to extract the archive."
+
+BINARY_PATTERN="${REPO_NAME}-*"
+BINARY_FILE=$(find "$TMP_DIR" -type f -name "$BINARY_PATTERN" | head -n 1)
+
+[[ -z "$BINARY_FILE" ]] && error "No binary matching pattern '${BINARY_PATTERN}' found in the archive."
+
+info "Found binary: $(basename "$BINARY_FILE")"
+
+RENAMED_BINARY="${TMP_DIR}/${STANDARD_BINARY_NAME}"
+info "Renaming binary to: $STANDARD_BINARY_NAME"
+mv "$BINARY_FILE" "$RENAMED_BINARY" || error "Failed to rename the binary."
+
+info "Installing the binary to ${INSTALL_PATH}..."
+sudo mv "$RENAMED_BINARY" "$INSTALL_PATH" || error "Failed to move the binary to ${INSTALL_PATH}."
+
+sudo chmod +x "$INSTALL_PATH" || error "Failed to make the binary executable."
+
+info "Installation successful! '${REPO_NAME}' has been installed to ${INSTALL_PATH}."
+info "You can run it using '${REPO_NAME}' from your terminal."
+
+exit 0