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

cd "$(dirname "$0")"

mkdir -p data/db data/files

export APP_HOST="${APP_HOST:-0.0.0.0}"
export APP_PORT="${APP_PORT:-3000}"
export DATABASE_URL="${DATABASE_URL:-sqlite://$(pwd)/data/db/rustpad.db?mode=rwc}"
export FILES_DIR="${FILES_DIR:-$(pwd)/data/files}"
export UPLOAD_MAX_SIZE_MB="${UPLOAD_MAX_SIZE_MB:-20}"
export STATIC_DIR="${STATIC_DIR:-$(pwd)/static}"
export RUST_LOG="${RUST_LOG:-rustpad=debug,tower_http=info}"

# Generate a new asset version on each run to prevent stale HTML and JavaScript.
export ASSET_VERSION="${ASSET_VERSION:-dev-$(date +%s)}"

update_browser_libs() {
  local python_bin=""
  if command -v python3 >/dev/null 2>&1; then
    python_bin="python3"
  elif command -v python >/dev/null 2>&1; then
    python_bin="python"
  fi

  if [[ -z "$python_bin" ]]; then
    echo "Python 3 is required to download browser libraries for local Cargo development." >&2
    return 1
  fi

  echo "Checking browser libraries..."
  "$python_bin" scripts/update_browser_libs.py
}

if command -v cargo >/dev/null 2>&1; then
  if update_browser_libs; then
    echo "Cleaning RustPad build artifacts..."
    cargo clean --package rustpad

    echo "Starting RustPad..."
    exec cargo run --package rustpad
  fi

  if ! command -v docker >/dev/null 2>&1; then
    exit 1
  fi
  echo "Local browser libraries could not be prepared; falling back to Docker." >&2
fi

if command -v docker >/dev/null 2>&1; then
  export IMAGE_TAG="${IMAGE_TAG:-dev}"
  export BROWSER_LIBS_REFRESH="${BROWSER_LIBS_REFRESH:-dev-$(date +%s)}"

  echo "Starting RustPad with Docker..."
  exec docker compose up --build --force-recreate --remove-orphans
fi

echo "Neither Cargo nor Docker was found. Install Rust 1.85+ or Docker." >&2
exit 1