#!/bin/sh
set -eu

WAIT_RETRIES="${WAIT_RETRIES:-60}"
WAIT_INTERVAL_SECONDS="${WAIT_INTERVAL_SECONDS:-2}"

wait_for_service() {
  label="$1"
  host="$2"
  port="$3"

  python - "$label" "$host" "$port" "$WAIT_RETRIES" "$WAIT_INTERVAL_SECONDS" <<'PY'
import socket
import sys
import time

label, host, port, retries, interval = sys.argv[1], sys.argv[2], int(sys.argv[3]), int(sys.argv[4]), float(sys.argv[5])

for attempt in range(1, retries + 1):
    try:
        socket.getaddrinfo(host, port, type=socket.SOCK_STREAM)
        with socket.create_connection((host, port), timeout=2):
            print(f"[docker-entrypoint] {label} ready at {host}:{port}")
            raise SystemExit(0)
    except OSError as exc:
        print(
            f"[docker-entrypoint] waiting for {label} ({attempt}/{retries}) at {host}:{port}: {exc}",
            file=sys.stderr,
        )
        time.sleep(interval)

print(f"[docker-entrypoint] {label} never became reachable at {host}:{port}", file=sys.stderr)
raise SystemExit(1)
PY
}

wait_for_service "database" "${DB_HOST:-127.0.0.1}" "${DB_PORT:-3306}"
wait_for_service "redis" "${CHANNEL_REDIS_HOST:-127.0.0.1}" "${CHANNEL_REDIS_PORT:-6379}"

python manage.py migrate --noinput
exec python manage.py runserver 0.0.0.0:8000