#!/usr/bin/env bash
# One-command local test startup for the EPUB->PDF converter.
# Foreground gunicorn with an auto-restart loop (no systemd/supervisor needed).
#
#   ./start.sh            # http://0.0.0.0:8030
#   PORT=9000 ./start.sh  # custom port
#
# WORKERS is pinned to 1: the job registry (app.JOBS) is in-memory per
# process, so multiple workers would lose job state between requests.
# Extra concurrency comes from --threads instead. The gunicorn flags mirror
# the Dockerfile CMD (single source of truth for the launch contract).
set -u
cd "$(dirname "$0")"

HOST="${HOST:-0.0.0.0}"
PORT="${PORT:-8030}"
THREADS="${THREADS:-8}"
export DATA_DIR="${DATA_DIR:-$PWD/data}"

PY="${PY:-/opt/venv/bin/python}"

echo "[start] EPUB->PDF converter on http://${HOST}:${PORT}"
echo "[start] DATA_DIR=${DATA_DIR}  workers=1 threads=${THREADS}"

while true; do
  "$PY" -m gunicorn \
    --bind "${HOST}:${PORT}" \
    --workers 1 \
    --threads "$THREADS" \
    --timeout 1200 \
    --graceful-timeout 30 \
    --access-logfile - \
    --error-logfile - \
    app:app
  code=$?
  echo "[start] gunicorn exited (code ${code}); restarting in 2s..."
  sleep 2
done