#!/bin/bash
set -euo pipefail

REPO="lwlee2608/linear-cli"
BINARY="linear"
INSTALL_DIR="${INSTALL_DIR:-$HOME/.local/bin}"

# Detect OS and architecture
OS=$(uname -s | tr '[:upper:]' '[:lower:]')
ARCH=$(uname -m)
case "$ARCH" in
    x86_64)  ARCH="amd64" ;;
    aarch64|arm64) ARCH="arm64" ;;
    *) echo "Unsupported architecture: $ARCH" >&2; exit 1 ;;
esac

# Get latest release tag
VERSION=$(curl -fsSL "https://api.github.com/repos/${REPO}/releases/latest" | grep '"tag_name"' | cut -d'"' -f4)
if [ -z "$VERSION" ]; then
    echo "Failed to fetch latest release" >&2
    exit 1
fi

echo "Installing ${BINARY} ${VERSION} (${OS}/${ARCH})..."

# Download binary
URL="https://github.com/${REPO}/releases/download/${VERSION}/${BINARY}-${OS}-${ARCH}.tar.gz"
TMPDIR=$(mktemp -d)
trap 'rm -rf "$TMPDIR"' EXIT

curl -fsSL "$URL" -o "${TMPDIR}/archive.tar.gz"
tar -xzf "${TMPDIR}/archive.tar.gz" -C "$TMPDIR"

# Install
mkdir -p "$INSTALL_DIR"
install -m 755 "${TMPDIR}/${BINARY}" "${INSTALL_DIR}/${BINARY}"

echo "Installed ${BINARY} to ${INSTALL_DIR}/${BINARY}"

# Check if install dir is in PATH
if ! echo "$PATH" | tr ':' '\n' | grep -qx "$INSTALL_DIR"; then
    echo ""
    echo "Add ${INSTALL_DIR} to your PATH:"
    echo "  export PATH=\"${INSTALL_DIR}:\$PATH\""
fi