#!/usr/bin/env bash
# Стенд профилирования: up | migrate | bootstrap | api | web-build | web | web-profiling | web-sourcemap | smoke | reset | down | all
set -euo pipefail
SELF="$(cd "$(dirname "$0")" && pwd)/$(basename "$0")"
cd "$(dirname "$0")/.."
ROOT="$(pwd)"
PERF="$ROOT/perf"
RUN="$PERF/.run"
VENV="$PERF/.venv"
mkdir -p "$RUN"

export PERF_API="${PERF_API:-http://localhost:8000}"
export PERF_WEB="${PERF_WEB:-http://localhost:8080}"
export PERF_DB_DSN="${PERF_DB_DSN:-postgresql://perf:perf@localhost:55432/perf}"
export DATABASE_URL="postgresql+asyncpg://perf:perf@localhost:55432/perf"
export DEBUG=true
export npm_config_registry="${npm_config_registry:-https://registry.npmjs.org}"

venv() {
  if [ ! -x "$VENV/bin/python" ]; then
    python3.12 -m venv "$VENV"
    "$VENV/bin/pip" install -q -r "$ROOT/api/requirements-dev.txt" -r "$PERF/requirements.txt"
  fi
}

start_bg() { # name, workdir, cmd...
  local name="$1" dir="$2"; shift 2
  if [ -f "$RUN/$name.pid" ] && kill -0 "$(cat "$RUN/$name.pid")" 2>/dev/null; then
    echo "$name уже запущен (pid $(cat "$RUN/$name.pid"))"; return
  fi
  # внешний >/dev/null: фоновая подоболочка не должна держать stdout вызывающего (иначе `| tail` виснет)
  (cd "$dir" && nohup "$@" >"$RUN/$name.log" 2>&1 </dev/null & echo $! >"$RUN/$name.pid") >/dev/null 2>&1
}

wait_http() { # url, tries
  for _ in $(seq 1 "${2:-60}"); do
    curl -fsS -o /dev/null "$1" 2>/dev/null && return 0
    sleep 1
  done
  echo "не дождались $1" >&2; return 1
}

cmd="${1:-}"
case "$cmd" in
  up)
    docker compose -f "$PERF/docker-compose.yml" up -d pg
    for _ in $(seq 1 60); do
      docker exec perf-pg pg_isready -U perf -d perf >/dev/null 2>&1 && break
      sleep 1
    done
    docker exec perf-pg pg_isready -U perf -d perf
    ;;
  migrate)
    venv
    (cd "$ROOT/api" && "$VENV/bin/alembic" upgrade head)
    ;;
  bootstrap)
    venv
    "$VENV/bin/python" "$PERF/stand/bootstrap.py"
    ;;
  api)
    venv
    start_bg api "$ROOT/api" "$VENV/bin/python" run_server.py
    wait_http "$PERF_API/healthz" 60
    ;;
  web-build)
    (cd "$ROOT/web" && npm ci && npx rsbuild build -c ../perf/web/rsbuild.perf.config.ts \
      && PERF_PROFILING=1 npx rsbuild build -c ../perf/web/rsbuild.perf.config.ts)
    ;;
  web)
    start_bg web "$ROOT/web" npx rsbuild preview -c ../perf/web/rsbuild.perf.config.ts
    wait_http "$PERF_WEB/" 60
    ;;
  web-profiling)
    # профилирующая сборка (react-dom/profiling, без минификации) на :8081, prod на :8080 не трогаем
    [ -f "$PERF/.build/profiling/index.html" ] || (cd "$ROOT/web" && PERF_PROFILING=1 npx rsbuild build -c ../perf/web/rsbuild.perf.config.ts)
    PERF_PROFILING=1 PERF_WEB_PORT=8081 start_bg web-profiling "$ROOT/web" npx rsbuild preview -c ../perf/web/rsbuild.perf.config.ts
    wait_http "http://localhost:8081/" 60
    ;;
  web-sourcemap)
    # prod-сборка с source maps на :8082 (CPU-профиль -> file:line, analysis/cpuprofile_top.py); :8080 и :8081 не трогаем
    [ -f "$PERF/.build/prod-sourcemap/index.html" ] || (cd "$ROOT/web" && PERF_SOURCEMAP=1 npx rsbuild build -c ../perf/web/rsbuild.perf.config.ts)
    PERF_SOURCEMAP=1 PERF_WEB_PORT=8082 start_bg web-sourcemap "$ROOT/web" npx rsbuild preview -c ../perf/web/rsbuild.perf.config.ts
    wait_http "http://localhost:8082/" 60
    ;;
  smoke)
    venv
    "$VENV/bin/python" "$PERF/stand/smoke.py"
    ;;
  reset)
    # Чистая БД: останавливаем api (держит соединения), сносим volume Postgres, поднимаем заново
    # и снова запускаем api. Фронт (web) не трогаем: БД он не использует.
    if [ -f "$RUN/api.pid" ]; then
      pkill -P "$(cat "$RUN/api.pid")" 2>/dev/null || true
      kill "$(cat "$RUN/api.pid")" 2>/dev/null || true
      rm -f "$RUN/api.pid"
    fi
    docker compose -f "$PERF/docker-compose.yml" down -v
    "$SELF" up; "$SELF" migrate; "$SELF" bootstrap; "$SELF" api
    ;;
  down)
    for n in web web-profiling web-sourcemap api; do
      if [ -f "$RUN/$n.pid" ]; then
        pkill -P "$(cat "$RUN/$n.pid")" 2>/dev/null || true
        kill "$(cat "$RUN/$n.pid")" 2>/dev/null || true
        rm -f "$RUN/$n.pid"
      fi
    done
    docker compose -f "$PERF/docker-compose.yml" down
    ;;
  all)
    "$SELF" up; "$SELF" migrate; "$SELF" bootstrap; "$SELF" web-build; "$SELF" api; "$SELF" web; "$SELF" smoke
    ;;
  *)
    echo "usage: $0 up|migrate|bootstrap|api|web-build|web|web-profiling|web-sourcemap|smoke|reset|down|all" >&2; exit 2
    ;;
esac