#!/usr/bin/env bash
set -euo pipefail

# This script creates an alias for the Gemini CLI

# Determine the project directory
PROJECT_DIR=$(cd "$(dirname "$0")/.." && pwd)
ALIAS_COMMAND="alias gemini='node "${PROJECT_DIR}/scripts/start.js"'"

# Detect shell and set config file path
if [[ "${SHELL}" == *"/bash" ]]; then
    CONFIG_FILE="${HOME}/.bashrc"
elif [[ "${SHELL}" == *"/zsh" ]]; then
    CONFIG_FILE="${HOME}/.zshrc"
else
    echo "Unsupported shell. Only bash and zsh are supported."
    exit 1
fi

echo "This script will add the following alias to your shell configuration file (${CONFIG_FILE}):"
echo "  ${ALIAS_COMMAND}"
echo ""

# Check if the alias already exists
if grep -q "alias gemini=" "${CONFIG_FILE}"; then
    echo "A 'gemini' alias already exists in ${CONFIG_FILE}. No changes were made."
    exit 0
fi

read -p "Do you want to proceed? (y/n) " -n 1 -r
echo ""
if [[ "${REPLY}" =~ ^[Yy]$ ]]; then
    echo "${ALIAS_COMMAND}" >> "${CONFIG_FILE}"
    echo ""
    echo "Alias added to ${CONFIG_FILE}."
    echo "Please run 'source ${CONFIG_FILE}' or open a new terminal to use the 'gemini' command."
else
    echo "Aborted. No changes were made."
fi