#!/usr/bin/env bash
# run-stack.sh — avvia i 3 layer reali di ThothII per la validazione end-to-end.
#
#   frontend (browser) → backend (Fastify :8787) → pi --mode rpc (GLM 5.2) → tht/harness → DWH
#
# Prerequisiti: VPN attiva, `pi` su PATH (GLM 5.2 configurato), harness/.env popolato,
# harness/config/tht.yaml -> workspace cliente, deps installate nei 3 progetti.
#
# Uso:   ./scripts/run-stack.sh
# Stop:  Ctrl-C (termina backend + frontend; i processi pi figli del backend muoiono con esso).
set -euo pipefail

ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd -P)"
HARNESS="$ROOT/harness"
BACKEND="$ROOT/backend"
FRONTEND="$ROOT/frontend"
THT_BIN="$HARNESS/.venv/bin/tht"
BACKEND_PORT="${BACKEND_PORT:-8787}"
FRONTEND_PORT="${FRONTEND_PORT:-5173}"

# --- preflight ---------------------------------------------------------------
[ -f "$HARNESS/.env" ]   || { echo "ERRORE: $HARNESS/.env mancante (credenziali DWH/vector)"; exit 1; }
[ -x "$THT_BIN" ]        || { echo "ERRORE: $THT_BIN non trovato (esegui: cd harness && python -m venv .venv && pip install -e .)"; exit 1; }
command -v pi >/dev/null || { echo "ERRORE: 'pi' non sul PATH (configura @earendil-works/pi-coding-agent con GLM 5.2)"; exit 1; }
[ -e "$HARNESS/config/tht.yaml" ] || { echo "ERRORE: $HARNESS/config/tht.yaml mancante (symlink al workspace)"; exit 1; }

# Carica le variabili del DWH/vector nell'ambiente: il backend le passa a pi e a tht.
set -a; . "$HARNESS/.env"; set +a

# tht deve essere raggiungibile dal processo pi che il backend spawna.
export PATH="$HARNESS/.venv/bin:$PATH"

echo "== ThothII stack =="
echo "  harness : $HARNESS (tht: $THT_BIN)"
echo "  backend : http://localhost:$BACKEND_PORT"
echo "  frontend: http://localhost:$FRONTEND_PORT"
echo "  pi      : $(command -v pi)"
echo

# --- avvio -------------------------------------------------------------------
pids=()
cleanup() { echo; echo "Arresto stack..."; for p in "${pids[@]}"; do kill "$p" 2>/dev/null || true; done; }
trap cleanup EXIT INT TERM

# Backend: usa il pi reale + il tht del venv, cwd harness per lo spawn di pi.
(
  cd "$BACKEND"
  PORT="$BACKEND_PORT" \
  THT_HARNESS_DIR="$HARNESS" \
  THT_BIN="$THT_BIN" \
  PI_BIN="pi" \
  AUTH_MODE="none" \
  THT_DWH_PRECHECK="1" \
  npm run dev
) &
pids+=($!)

# Frontend: il browser usa sempre /api; Vite lo inoltra al backend locale.
(
  cd "$FRONTEND"
  THT_FRONTEND_API_UPSTREAM="http://localhost:$BACKEND_PORT" \
  npm run dev -- --port "$FRONTEND_PORT"
) &
pids+=($!)

echo "Stack avviato. Apri http://localhost:$FRONTEND_PORT e crea una nuova domanda."
echo "Ctrl-C per fermare."
wait