#!/usr/bin/env bash
set -e

REPO="ugolbck/seofordev"
APP="seo"
CONFIG_DIR="${HOME}/.seo"
CONFIG_FILE="${CONFIG_DIR}/config.yml"
INSTALL_DIR="/usr/local/bin"

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

# Helper to check command existence
has_cmd() {
  command -v "$1" >/dev/null 2>&1
}

# Ensure minimal Playwright/Chromium libraries on Debian/Ubuntu/WSL
if [ "$OS" = "linux" ] && has_cmd apt-get; then
  echo "🔎 Checking required system libraries for browser automation (Playwright)"
  # Determine correct ALSA package for this distro (Ubuntu 24.04/Devan: libasound2t64; older: libasound2)
  ALSA_PKG="libasound2"
  if has_cmd apt-cache && apt-cache show libasound2t64 >/dev/null 2>&1; then
    ALSA_PKG="libasound2t64"
  fi

  REQ_PKGS=(libnss3 libnspr4 "$ALSA_PKG")
  MISSING=()
  for P in "${REQ_PKGS[@]}"; do
    dpkg -s "$P" >/dev/null 2>&1 || MISSING+=("$P")
  done

  if [ ${#MISSING[@]} -gt 0 ]; then
    echo "📦 Installing missing libraries: ${MISSING[*]}"
    sudo apt-get update -y
    sudo apt-get install -y "${MISSING[@]}"
  else
    echo "✅ Required libraries already present"
  fi
else
  if [ "$OS" = "linux" ]; then
    echo "ℹ️ Skipping system library installation (apt not found). If you hit Playwright errors, install: libnss3 libnspr4 libasound2"
  fi
fi

# Fetch latest version
LATEST=$(curl -s https://api.github.com/repos/${REPO}/releases/latest | grep tag_name | cut -d '"' -f 4)
TARBALL="seofordev_${OS}_${ARCH}.tar.gz"
URL="https://github.com/${REPO}/releases/download/${LATEST}/${TARBALL}"

echo "📦 Downloading $APP ($OS/$ARCH) from $URL"
TMP_DIR=$(mktemp -d)
curl -sL "$URL" -o "$TMP_DIR/$TARBALL"
tar -xzf "$TMP_DIR/$TARBALL" -C "$TMP_DIR"
chmod +x "$TMP_DIR/${APP}"

# Create config if not exists
if [ ! -f "$CONFIG_FILE" ]; then
  echo "⚙️ Creating config file at $CONFIG_FILE"
  mkdir -p "$CONFIG_DIR"
  cat <<EOF > "$CONFIG_FILE"
api_key: ""
default_port: 3000
default_concurrency: 4
default_max_pages: 0
default_max_depth: 0
default_ignore_patterns:
  - "/api"
  - "/admin"
EOF
  echo "✅ Created config file at $CONFIG_FILE"
else
  echo "ℹ️ Config already exists at $CONFIG_FILE"
fi

# Move binary (requires sudo)
echo "🔐 Installing ${APP} to ${INSTALL_DIR} (you may be prompted for your password)"
sudo mv "$TMP_DIR/$APP" "${INSTALL_DIR}/${APP}"
sudo chmod +x "${INSTALL_DIR}/${APP}"
echo "✅ Installed ${APP} to ${INSTALL_DIR}/${APP}"

echo "🚀 All set! Run \`seo\` to get started."