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add download script for Gitea Tea CLI installation
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Peter Wood
337
download-tea.sh
Executable file
337
download-tea.sh
Executable file
@@ -0,0 +1,337 @@
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#!/bin/bash
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#
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# download-tea.sh - Downloads and installs the Gitea Tea CLI tool for Linux
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#
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# SYNOPSIS
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# ./download-tea.sh [OPTIONS]
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#
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# DESCRIPTION
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# This script automatically downloads, verifies, and installs the Tea CLI (Gitea command-line tool).
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# It supports automatic detection of the latest version, SHA256 checksum verification, and intelligent
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# installation location based on user privileges.
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#
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# OPTIONS
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# -v, --version VERSION Specifies the version of Tea to install. If not provided, the script will
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# automatically fetch the latest version from the Gitea releases page.
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# -f, --force Bypasses the overwrite confirmation prompt if Tea is already installed.
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# -h, --help Display this help message and exit.
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#
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# EXAMPLES
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# ./download-tea.sh
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# Automatically detects and installs the latest version of Tea.
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#
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# ./download-tea.sh -v 0.11.1
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# Installs a specific version of Tea (v0.11.1).
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#
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# ./download-tea.sh --force
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# Installs the latest version and overwrites any existing installation without prompting.
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#
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# ./download-tea.sh -v 0.11.1 -f
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# Installs version 0.11.1 and overwrites existing installation without prompting.
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#
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# NOTES
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# - Requires internet connection to download from https://gitea.com
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# - Automatically detects system architecture (amd64, arm64, 386, arm)
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# - Installation location:
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# * With root/sudo privileges: /usr/local/bin
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# * Without privileges: ~/.local/bin
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# - Automatically updates PATH environment variable if needed
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# - After installation, restart your terminal or reload shell configuration
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#
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# LINK
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# https://gitea.com/gitea/tea
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#
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# Color codes for output
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readonly GREEN='\033[0;32m'
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readonly RED='\033[0;31m'
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readonly YELLOW='\033[1;33m'
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readonly CYAN='\033[0;36m'
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readonly GRAY='\033[0;37m'
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readonly NC='\033[0m' # No Color
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# Variables
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TEA_VERSION=""
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FORCE=false
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# Show usage information
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show_usage() {
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sed -n '3,37p' "$0" | sed 's/^# \?//'
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exit 0
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}
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# Parse command line arguments
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while [[ $# -gt 0 ]]; do
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case $1 in
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-v|--version)
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TEA_VERSION="$2"
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shift 2
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;;
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-f|--force)
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FORCE=true
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shift
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;;
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-h|--help)
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show_usage
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;;
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*)
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echo -e "${RED}Error: Unknown option: $1${NC}" >&2
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echo "Use -h or --help for usage information."
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exit 1
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;;
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esac
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done
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# 1. Determine version to install
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if [[ -z "$TEA_VERSION" ]]; then
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echo "No version specified. Fetching latest release..."
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# Try to fetch the latest version using curl
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if command -v curl &> /dev/null; then
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RELEASE_PAGE=$(curl -sL "https://gitea.com/gitea/tea/releases" 2>&1)
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if [[ $? -ne 0 ]]; then
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echo -e "${RED}Error: Failed to fetch latest version: $RELEASE_PAGE${NC}" >&2
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echo "Please specify a version manually using -v parameter."
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exit 1
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fi
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# Fallback to wget if curl is not available
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elif command -v wget &> /dev/null; then
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RELEASE_PAGE=$(wget -qO- "https://gitea.com/gitea/tea/releases" 2>&1)
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if [[ $? -ne 0 ]]; then
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echo -e "${RED}Error: Failed to fetch latest version: $RELEASE_PAGE${NC}" >&2
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echo "Please specify a version manually using -v parameter."
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exit 1
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fi
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else
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echo -e "${RED}Error: Neither curl nor wget is available${NC}" >&2
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echo "Please install curl or wget, or specify a version manually using -v parameter."
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exit 1
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fi
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# Parse the HTML to find the latest version tag (format: /gitea/tea/releases/tag/v0.x.x)
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if [[ "$RELEASE_PAGE" =~ /gitea/tea/releases/tag/v([0-9]+\.[0-9]+\.[0-9]+) ]]; then
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TEA_VERSION="${BASH_REMATCH[1]}"
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echo -e "${GREEN}Latest version found: v$TEA_VERSION${NC}"
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else
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echo -e "${RED}Error: Could not determine the latest version from the releases page.${NC}" >&2
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echo "Please specify a version manually using -v parameter."
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exit 1
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fi
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else
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echo "Using specified version: v$TEA_VERSION"
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fi
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# 2. Define variables for the download
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# Detect system architecture
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ARCH=$(uname -m)
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case "$ARCH" in
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x86_64)
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ARCHITECTURE="amd64"
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;;
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aarch64|arm64)
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ARCHITECTURE="arm64"
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;;
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i386|i686)
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ARCHITECTURE="386"
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;;
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armv7l|armv6l)
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ARCHITECTURE="arm"
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;;
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*)
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echo -e "${RED}Error: Unsupported architecture: $ARCH${NC}" >&2
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exit 1
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;;
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esac
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# Construct download URLs
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DOWNLOAD_URL="https://gitea.com/gitea/tea/releases/download/v${TEA_VERSION}/tea-${TEA_VERSION}-linux-${ARCHITECTURE}"
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CHECKSUM_URL="https://gitea.com/gitea/tea/releases/download/v${TEA_VERSION}/checksums.txt"
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# Determine installation directory based on privileges
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# Check if we can write to /usr/local/bin (requires root/sudo)
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if [[ -w "/usr/local/bin" ]] || [[ "$EUID" -eq 0 ]]; then
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INSTALL_DIR="/usr/local/bin"
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else
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INSTALL_DIR="$HOME/.local/bin"
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fi
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# Define file names and temp locations
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FILE_NAME="tea"
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TEMP_FILE="/tmp/tea-${TEA_VERSION}"
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TEMP_CHECKSUM="/tmp/tea-checksums.txt"
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# 3. Check if file already exists
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if [[ -f "$INSTALL_DIR/$FILE_NAME" ]] && [[ "$FORCE" != true ]]; then
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# Prompt user before overwriting existing installation
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echo -n "tea already exists in $INSTALL_DIR. Overwrite? (Y/N): "
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read -r response
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if [[ ! "$response" =~ ^[Yy]$ ]]; then
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echo "Installation cancelled."
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exit 0
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fi
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fi
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# 4. Create the installation directory if it doesn't exist
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echo "Creating installation directory: $INSTALL_DIR"
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if [[ ! -d "$INSTALL_DIR" ]]; then
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if ! mkdir -p "$INSTALL_DIR"; then
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echo -e "${RED}Error: Failed to create installation directory${NC}" >&2
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exit 1
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fi
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fi
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# 5. Download the binary and checksum
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echo "Downloading tea CLI v$TEA_VERSION for $ARCHITECTURE..."
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# Use curl if available, otherwise use wget
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if command -v curl &> /dev/null; then
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if ! curl -fL "$DOWNLOAD_URL" -o "$TEMP_FILE"; then
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echo -e "${RED}Error: Failed to download the file. Please check the URL and version number.${NC}" >&2
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rm -f "$TEMP_FILE"
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exit 1
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fi
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elif command -v wget &> /dev/null; then
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if ! wget -q "$DOWNLOAD_URL" -O "$TEMP_FILE"; then
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echo -e "${RED}Error: Failed to download the file. Please check the URL and version number.${NC}" >&2
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rm -f "$TEMP_FILE"
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exit 1
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fi
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else
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echo -e "${RED}Error: Neither curl nor wget is available${NC}" >&2
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exit 1
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fi
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echo "Binary downloaded successfully."
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# Try to download checksum file for verification (optional but recommended)
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CHECKSUM_AVAILABLE=false
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echo "Attempting to download checksum file..."
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if command -v curl &> /dev/null; then
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if curl -fL "$CHECKSUM_URL" -o "$TEMP_CHECKSUM" 2>/dev/null; then
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CHECKSUM_AVAILABLE=true
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echo "Checksum file downloaded."
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fi
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elif command -v wget &> /dev/null; then
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if wget -q "$CHECKSUM_URL" -O "$TEMP_CHECKSUM" 2>/dev/null; then
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CHECKSUM_AVAILABLE=true
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echo "Checksum file downloaded."
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fi
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fi
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if [[ "$CHECKSUM_AVAILABLE" != true ]]; then
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echo -e "${YELLOW}Warning: Checksum file not available for this version. Skipping verification.${NC}"
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fi
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# 6. Verify checksum (if available)
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if [[ "$CHECKSUM_AVAILABLE" == true ]]; then
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echo "Verifying file integrity..."
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# Check if sha256sum is available
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if ! command -v sha256sum &> /dev/null; then
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echo -e "${YELLOW}Warning: sha256sum not available. Skipping checksum verification.${NC}"
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else
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# Calculate SHA256 hash of downloaded file
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DOWNLOADED_HASH=$(sha256sum "$TEMP_FILE" | awk '{print $1}')
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# Parse checksums.txt to find the hash for our specific file
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# The checksums file format is: "hash filename" (two spaces)
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EXPECTED_FILE_NAME="tea-${TEA_VERSION}-linux-${ARCHITECTURE}"
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EXPECTED_HASH=$(grep -E "^[a-fA-F0-9]+\s+${EXPECTED_FILE_NAME}$" "$TEMP_CHECKSUM" | awk '{print $1}')
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if [[ -z "$EXPECTED_HASH" ]]; then
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echo -e "${YELLOW}Warning: Could not find checksum for $EXPECTED_FILE_NAME in checksums.txt${NC}"
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echo -n "Continue without checksum verification? (Y/N): "
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read -r response
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if [[ ! "$response" =~ ^[Yy]$ ]]; then
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rm -f "$TEMP_FILE" "$TEMP_CHECKSUM"
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exit 1
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fi
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elif [[ "$DOWNLOADED_HASH" == "$EXPECTED_HASH" ]]; then
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echo -e "${GREEN}Checksum verification passed.${NC}"
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else
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echo -e "${RED}Error: Checksum verification failed! Downloaded file may be corrupted or tampered with.${NC}" >&2
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echo "Expected: $EXPECTED_HASH"
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echo "Got: $DOWNLOADED_HASH"
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rm -f "$TEMP_FILE" "$TEMP_CHECKSUM"
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exit 1
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fi
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fi
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fi
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# 7. Move file to installation directory and make it executable
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if ! mv "$TEMP_FILE" "$INSTALL_DIR/$FILE_NAME"; then
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echo -e "${RED}Error: Failed to move file to installation directory${NC}" >&2
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rm -f "$TEMP_FILE" "$TEMP_CHECKSUM"
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exit 1
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fi
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if ! chmod +x "$INSTALL_DIR/$FILE_NAME"; then
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echo -e "${RED}Error: Failed to make file executable${NC}" >&2
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rm -f "$INSTALL_DIR/$FILE_NAME" "$TEMP_CHECKSUM"
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exit 1
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fi
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echo "Installed to $INSTALL_DIR/$FILE_NAME"
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rm -f "$TEMP_CHECKSUM"
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# 8. Add the directory to PATH if necessary
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echo ""
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echo "Updating PATH environment variable..."
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# Check if the directory is already in PATH
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if [[ ":$PATH:" == *":$INSTALL_DIR:"* ]]; then
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echo "Directory is already in PATH."
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else
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echo -e "${YELLOW}Directory is not in PATH.${NC}"
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# Determine which shell configuration file to update
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if [[ -n "$ZSH_VERSION" ]]; then
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SHELL_CONFIG="$HOME/.zshrc"
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elif [[ -n "$BASH_VERSION" ]]; then
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if [[ -f "$HOME/.bashrc" ]]; then
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SHELL_CONFIG="$HOME/.bashrc"
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elif [[ -f "$HOME/.bash_profile" ]]; then
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SHELL_CONFIG="$HOME/.bash_profile"
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fi
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fi
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if [[ -n "$SHELL_CONFIG" ]]; then
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# Check if PATH export already exists in config file
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if ! grep -q "export PATH=\"\$PATH:$INSTALL_DIR\"" "$SHELL_CONFIG" 2>/dev/null; then
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echo "" >> "$SHELL_CONFIG"
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echo "# Added by tea installer" >> "$SHELL_CONFIG"
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echo "export PATH=\"\$PATH:$INSTALL_DIR\"" >> "$SHELL_CONFIG"
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echo -e "${GREEN}Added to PATH in $SHELL_CONFIG${NC}"
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echo "You may need to restart your terminal or run: source $SHELL_CONFIG"
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else
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echo "PATH entry already exists in $SHELL_CONFIG"
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fi
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else
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echo -e "${YELLOW}Warning: Could not determine shell configuration file.${NC}"
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echo "You may need to add '$INSTALL_DIR' to your PATH manually."
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fi
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fi
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# 9. Verification
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echo ""
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echo "Verification:"
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if command -v tea &> /dev/null; then
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VERSION_OUTPUT=$(tea --version 2>&1)
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echo -e "${GREEN}$VERSION_OUTPUT${NC}"
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elif [[ -x "$INSTALL_DIR/$FILE_NAME" ]]; then
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VERSION_OUTPUT=$("$INSTALL_DIR/$FILE_NAME" --version 2>&1)
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echo -e "${GREEN}$VERSION_OUTPUT${NC}"
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else
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echo -e "${YELLOW}Warning: Could not execute tea. PATH may not be updated in this session.${NC}"
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fi
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echo ""
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echo -e "${CYAN}Installation complete! Run 'tea login add' to start configuring your Gitea instance.${NC}"
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if [[ ":$PATH:" != *":$INSTALL_DIR:"* ]]; then
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echo -e "${YELLOW}Note: If 'tea' command is not found, restart your terminal or reload PATH with:${NC}"
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if [[ -n "$SHELL_CONFIG" ]]; then
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echo -e "${GRAY} source $SHELL_CONFIG${NC}"
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else
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echo -e "${GRAY} export PATH=\"\$PATH:$INSTALL_DIR\"${NC}"
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fi
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fi
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