#!/usr/bin/env bash
# Local throwaway Synapse for driving the real UI (Playwright / a browser)
# against a homeserver you control — open registration, no rate limits,
# SQLite, media served. Everything lives in .dev-homeserver/ (gitignored).
#
#   scripts/dev-homeserver.sh start    # install (first run) + start on :8008
#   scripts/dev-homeserver.sh stop
#   scripts/dev-homeserver.sh reset    # wipe the database and media
#   python3 scripts/dev-seed.py 400    # alice/bob + "Busy Room" with images
#
# Then `npm start` and log in at http://127.0.0.1:5173/login/http%3A%2F%2Flocalhost%3A8008/
# as alice / password123.
set -euo pipefail
ROOT="$(cd "$(dirname "$0")/.." && pwd)"
DIR="$ROOT/.dev-homeserver"
VENV="$DIR/venv"
CFG="$DIR/homeserver.yaml"
PIDFILE="$DIR/synapse.pid"

install() {
  mkdir -p "$DIR"
  if [ ! -x "$VENV/bin/python" ]; then
    python3 -m venv --without-pip "$VENV"
    curl -sS https://bootstrap.pypa.io/get-pip.py -o "$DIR/get-pip.py"
    "$VENV/bin/python" "$DIR/get-pip.py" -q
    "$VENV/bin/pip" install -q matrix-synapse
  fi
  if [ ! -f "$CFG" ]; then
    (cd "$DIR" && "$VENV/bin/python" -m synapse.app.homeserver \
      --server-name localhost --config-path homeserver.yaml --generate-config --report-stats=no >/dev/null)
    # the generated listener only serves `client`; add media + open the door
    python3 - "$CFG" <<'PY'
import sys, re
p = sys.argv[1]; s = open(p).read()
s = s.replace("      - client\n", "      - client\n      - media\n", 1)
s += """
enable_registration: true
enable_registration_without_verification: true
rc_message: { per_second: 1000, burst_count: 10000 }
rc_registration: { per_second: 1000, burst_count: 10000 }
rc_login: { address: { per_second: 1000, burst_count: 10000 }, account: { per_second: 1000, burst_count: 10000 }, failed_attempts: { per_second: 1000, burst_count: 10000 } }
rc_joins: { local: { per_second: 1000, burst_count: 10000 }, remote: { per_second: 1000, burst_count: 10000 } }
rc_presence: { per_user: { per_second: 1000, burst_count: 10000 } }
max_upload_size: 50M
suppress_key_server_warning: true
"""
open(p, "w").write(s)
PY
  fi
}

start() {
  install
  if [ -f "$PIDFILE" ] && kill -0 "$(cat "$PIDFILE")" 2>/dev/null; then
    echo "already running (pid $(cat "$PIDFILE"))"; return
  fi
  (cd "$DIR" && setsid nohup "$VENV/bin/python" -m synapse.app.homeserver --config-path homeserver.yaml \
    > synapse.log 2>&1 < /dev/null & echo $! > "$PIDFILE")
  for _ in $(seq 1 40); do
    sleep 1
    curl -sf http://127.0.0.1:8008/_matrix/client/versions >/dev/null && { echo "synapse up on http://localhost:8008"; return; }
  done
  echo "synapse did not come up — see $DIR/synapse.log" >&2; exit 1
}

stop() {
  if [ -f "$PIDFILE" ]; then kill "$(cat "$PIDFILE")" 2>/dev/null || true; rm -f "$PIDFILE"; echo stopped; fi
}

case "${1:-}" in
  start) start ;;
  stop) stop ;;
  reset) stop; rm -f "$DIR"/homeserver.db* ; rm -rf "$DIR/media_store"; echo "database wiped"; ;;
  *) echo "usage: $0 start|stop|reset" >&2; exit 2 ;;
esac