install.sh

#!/usr/bin/env sh
# install.sh — Lucella Protocol installer
# Detects OS/arch, downloads correct binary from GitHub Releases
#
# Usage:
#   curl -fsSL https://raw.githubusercontent.com/Gicelldev/lucella/main/install.sh | sh
#   curl -fsSL https://raw.githubusercontent.com/Gicelldev/lucella/main/install.sh | sh -s -- --version v0.1.0

set -e

REPO="Gicelldev/lucella"
BINARY="lucella"
INSTALL_DIR="/usr/local/bin"
VERSION="${LUCELLA_VERSION:-latest}"

# ── Color output ──────────────────────────────────────────────────────────────
RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[1;33m'
BOLD='\033[1m'; RESET='\033[0m'

info()    { printf "${BOLD}[lucella]${RESET} %s\n" "$1"; }
success() { printf "${GREEN}[lucella]${RESET} %s\n" "$1"; }
warn()    { printf "${YELLOW}[lucella]${RESET} %s\n" "$1"; }
error()   { printf "${RED}[lucella] ERROR:${RESET} %s\n" "$1" >&2; exit 1; }

# ── Detect OS ─────────────────────────────────────────────────────────────────
detect_os() {
    OS=$(uname -s)
    case "$OS" in
        Linux*)  echo "linux" ;;
        Darwin*) echo "macos" ;;
        MINGW*|MSYS*|CYGWIN*) echo "windows" ;;
        *) error "Unsupported OS: $OS. Install manually from https://github.com/$REPO/releases" ;;
    esac
}

# ── Detect Architecture ───────────────────────────────────────────────────────
detect_arch() {
    ARCH=$(uname -m)
    case "$ARCH" in
        x86_64|amd64)  echo "x64" ;;
        aarch64|arm64) echo "arm64" ;;
        *) error "Unsupported architecture: $ARCH. Install manually from https://github.com/$REPO/releases" ;;
    esac
}

# ── Get latest version from GitHub API ───────────────────────────────────────
get_latest_version() {
    if command -v curl >/dev/null 2>&1; then
        curl -fsSL "https://api.github.com/repos/$REPO/releases/latest" \
            | grep '"tag_name"' | sed 's/.*"tag_name": *"\(.*\)".*/\1/'
    elif command -v wget >/dev/null 2>&1; then
        wget -qO- "https://api.github.com/repos/$REPO/releases/latest" \
            | grep '"tag_name"' | sed 's/.*"tag_name": *"\(.*\)".*/\1/'
    else
        error "curl or wget required. Install one and try again."
    fi
}

# ── Download ──────────────────────────────────────────────────────────────────
download() {
    URL="$1"
    DEST="$2"
    if command -v curl >/dev/null 2>&1; then
        curl -fsSL "$URL" -o "$DEST"
    elif command -v wget >/dev/null 2>&1; then
        wget -qO "$DEST" "$URL"
    fi
}

# ── Main ──────────────────────────────────────────────────────────────────────
main() {
    printf "\n${BOLD}🕯️  Lucella Protocol Installer${RESET}\n"
    printf "   Faster than gRPC · Safer than REST\n\n"

    OS=$(detect_os)
    ARCH=$(detect_arch)
    info "Detected: $OS / $ARCH"

    # Get version
    if [ "$VERSION" = "latest" ]; then
        info "Fetching latest version..."
        VERSION=$(get_latest_version)
        [ -z "$VERSION" ] && error "Could not fetch latest version. Check your internet connection."
    fi
    info "Installing version: $VERSION"

    # Build artifact name
    if [ "$OS" = "windows" ]; then
        ARTIFACT="lucella-windows-${ARCH}.exe.tar.gz"
    else
        ARTIFACT="lucella-${OS}-${ARCH}.tar.gz"
    fi

    URL="https://github.com/$REPO/releases/download/$VERSION/$ARTIFACT"
    TMPDIR=$(mktemp -d)
    ARCHIVE="$TMPDIR/$ARTIFACT"

    info "Downloading $ARTIFACT..."
    download "$URL" "$ARCHIVE" || error "Download failed: $URL\nCheck https://github.com/$REPO/releases for available versions."

    info "Extracting..."
    tar xzf "$ARCHIVE" -C "$TMPDIR"
    rm "$ARCHIVE"

    # Find the binary
    if [ "$OS" = "windows" ]; then
        BINARY_FILE=$(find "$TMPDIR" -name "lucella*.exe" | head -1)
    else
        BINARY_FILE=$(find "$TMPDIR" -name "lucella*" ! -name "*.tar.gz" | head -1)
        chmod +x "$BINARY_FILE"
    fi

    # Install
    info "Installing to $INSTALL_DIR/$BINARY..."
    if [ -w "$INSTALL_DIR" ]; then
        cp "$BINARY_FILE" "$INSTALL_DIR/$BINARY"
    else
        sudo cp "$BINARY_FILE" "$INSTALL_DIR/$BINARY"
    fi

    rm -rf "$TMPDIR"

    # Verify
    if command -v lucella >/dev/null 2>&1; then
        INSTALLED_VER=$(lucella --version 2>/dev/null || echo "unknown")
        success "Installed: lucella $INSTALLED_VER"
    fi

    printf "\n${GREEN}✅ Lucella installed!${RESET}\n\n"
    printf "  ${BOLD}Start a server:${RESET}\n"
    printf "  $ lucella serve --port 7777\n\n"
    printf "  ${BOLD}Validate a schema:${RESET}\n"
    printf "  $ lucella check schema.lucella\n\n"
    printf "  ${BOLD}Scaffold a project:${RESET}\n"
    printf "  $ lucella init my-api\n\n"
    printf "  Docs: https://github.com/$REPO\n\n"
}

main "$@"