#!/usr/bin/env bash
# @wcag-audit/cli installer — license-gated.
# Usage: curl -fsSL https://wcagaudit.io/install | bash -s -- <license-key>
set -e

KEY="${1:-${WCAG_LICENSE_KEY:-}}"
if [ -z "$KEY" ]; then
  echo "error: license key required."
  echo ""
  echo "usage:"
  echo "  curl -fsSL https://wcagaudit.io/install | bash -s -- <license-key>"
  echo ""
  echo "Get a key at https://wcagaudit.io/pricing (free tier available)."
  exit 1
fi

BASE_URL="https://wcagaudit.io"
TARBALL_URL="$BASE_URL/api/install/download?key=$KEY"
INSTALL_DIR="$HOME/.wcag-audit/install"
BIN_DIR="$HOME/.local/bin"

echo "→ validating license..."
HTTP_STATUS=$(curl -s -o /tmp/wcag-install.tgz -w "%{http_code}" -L "$TARBALL_URL")

if [ "$HTTP_STATUS" != "200" ]; then
  echo "error: license validation failed (HTTP $HTTP_STATUS)."
  cat /tmp/wcag-install.tgz 2>/dev/null | head -20
  rm -f /tmp/wcag-install.tgz
  exit 1
fi

echo "→ extracting to $INSTALL_DIR..."
rm -rf "$INSTALL_DIR"
mkdir -p "$INSTALL_DIR"
tar -xzf /tmp/wcag-install.tgz -C "$INSTALL_DIR" --strip-components=1
rm -f /tmp/wcag-install.tgz

echo "→ installing dependencies..."
(cd "$INSTALL_DIR" && npm install --omit=dev --silent 2>&1 | tail -3)

echo "→ creating wcag-audit symlink in $BIN_DIR..."
mkdir -p "$BIN_DIR"
chmod +x "$INSTALL_DIR/src/cli.js"
ln -sf "$INSTALL_DIR/src/cli.js" "$BIN_DIR/wcag-audit"

echo "→ saving license key to ~/.wcagauditrc..."
cat > "$HOME/.wcagauditrc" <<RC
{
  "licenseKey": "$KEY"
}
RC
chmod 600 "$HOME/.wcagauditrc"

cat <<DONE

✓ Installed @wcag-audit/cli to $INSTALL_DIR
✓ Symlink: $BIN_DIR/wcag-audit
✓ License saved to ~/.wcagauditrc

Next:
  Make sure $BIN_DIR is in your PATH:
    export PATH="$HOME/.local/bin:$PATH"

  Then run:
    wcag-audit scan --target https://your-site.com

DONE