#!/usr/bin/env bash
# Replay a recorded ThothII reviewer session on http://localhost:5333, with no
# VPN/Pi/Python/DWH. The real frontend UI is served against a tiny SSE/REST shim
# that re-emits the reviewer gates captured in Pi transcripts.
#
# Usage:
#   scripts/replay.sh                          # extract(default) + build(if missing) + run
#   scripts/replay.sh extract [<session>]      # (re)build replay.json for a session
#   scripts/replay.sh build                    # (re)build the SPA bundle only
#   scripts/replay.sh run                      # run only (assumes build + fixture present)
#
#   <session>  a session id (e.g. 2026-07-03-170732-fammi-…)
#              a transcript file path
#              a directory of transcripts (picks the dominant session)
#              default: the 3-Jul 17:07 full session
#
# Examples:
#   scripts/replay.sh extract 2026-07-03-132933-fammi-la-lista-dei-pazienti-che-negli-ul
#   scripts/replay.sh run
#
# Env:
#   PORT       default 5333
#
# See tools/replay/README.md for the data flow.

set -euo pipefail
HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")"/.. && pwd)"
PORT="${PORT:-5333}"
WEB_DIR="$HERE/tools/replay/web"
FIXTURE="$HERE/tools/replay/replay.json"

action="${1:-all}"
# Positional target for extract: shifts past the action word.
target="${2:-}"

do_extract() {
  echo "→ extracting replay.json for ${target:-default session (3-Jul 17:07)}…"
  node "$HERE/tools/replay/extract.mjs" "$target"
}

do_build() {
  if [[ -d "$WEB_DIR" ]]; then
    echo "→ $WEB_DIR exists, skipping build (use 'rm -rf $WEB_DIR' to force)"
    return
  fi
  echo "→ building SPA bundle into $WEB_DIR (VITE_BACKEND_URL=http://localhost:$PORT)…"
  (
    cd "$HERE/frontend"
    VITE_BACKEND_URL="http://localhost:$PORT" npx vite build --outDir ../tools/replay/web
  )
}

do_run() {
  [[ -f "$FIXTURE" ]] || { echo "✗ missing $FIXTURE — run: scripts/replay.sh extract"; exit 1; }
  [[ -d "$WEB_DIR" ]] || { echo "✗ missing $WEB_DIR — run: scripts/replay.sh build"; exit 1; }
  echo "→ starting replay server on :$PORT (Ctrl-C to stop)…"
  PORT="$PORT" node "$HERE/tools/replay/server.mjs"
}

case "$action" in
  extract) do_extract ;;
  build)   do_build ;;
  run)     do_run ;;
  all)
    [[ -f "$FIXTURE" ]] || do_extract
    do_build
    do_run
    ;;
  *) echo "unknown action: $action"; echo "usage: $0 [extract|build|run|all]"; exit 2 ;;
esac