#!/usr/bin/env bash
# hh — hack-house mobile launcher (Termux/Fairphone friendly).
#
#   hh host  [NAME] [PORT]        start a room ON THIS DEVICE (tmux window)
#   hh join  HOST PORT [NAME]     join an existing room as an operator (daemon)
#   hh web   [PORT]               serve the mobile web console (tmux window)
#   hh op    <operator args...>   passthrough to `python -m cmd_chat.operator`
#   hh status                     what's running + listening
#   hh stop  [all|host|web|join]  tear it down
#
# Config via env (all optional):
#   HH_PASSWORD  room password        (default: hh-mobile)
#   HH_PORT      host port            (default: 8799)
#   HH_WEB_PORT  web console port     (default: 8790)
#   HH_NAME      room / operator name (default: current dir basename)
#   HH_BIND      host/web bind addr   (default: 0.0.0.0 — reachable over Tailscale)
#   HH_TLS       set to 1 to drop --no-tls (default: no-tls)
set -euo pipefail

# --- locate the repo root (this script lives in <root>/scripts/hh) -----------
_self="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
ROOT="$(dirname "$_self")"
cd "$ROOT"

PY="${HH_PY:-python}"
PW="${HH_PASSWORD:-hh-mobile}"
PORT="${HH_PORT:-8799}"
WEB_PORT="${HH_WEB_PORT:-8790}"
BIND="${HH_BIND:-0.0.0.0}"
NAME="${HH_NAME:-$(basename "$ROOT")}"
TLS_FLAG="--no-tls"; [ "${HH_TLS:-0}" = "1" ] && TLS_FLAG=""
TMUX_SES="hh"
OP="$PY -m cmd_chat.operator"

_die() { echo "hh: $*" >&2; exit 1; }
command -v "$PY" >/dev/null || _die "python ('$PY') not found"

# run a long-lived process in a named tmux window (survives SSH disconnect)
_tmux_run() {  # <window> <command string>
  local win="$1"; shift
  command -v tmux >/dev/null || _die "tmux not found (pkg install tmux)"
  tmux has-session -t "$TMUX_SES" 2>/dev/null || tmux new-session -d -s "$TMUX_SES" -n main
  if tmux list-windows -t "$TMUX_SES" -F '#W' 2>/dev/null | grep -qx "$win"; then
    echo "hh: window '$win' already running (hh stop $win to replace)"; return 0
  fi
  tmux new-window -t "$TMUX_SES" -n "$win" "cd '$ROOT'; $*; echo '[$win exited — press enter]'; read"
}

# best-effort Tailscale IP for the "reachable at" hint
_ts_ip() { command -v tailscale >/dev/null && tailscale ip -4 2>/dev/null | head -1 || true; }

cmd="${1:-status}"; shift || true
case "$cmd" in
  host)
    [ $# -ge 1 ] && NAME="$1"; [ $# -ge 2 ] && PORT="$2"
    # window name is port-scoped so several rooms (one per direnv dir) coexist
    _tmux_run "host-$PORT" "$PY cmd_chat.py serve '$BIND' '$PORT' --password '$PW' $TLS_FLAG"
    ip="$(_ts_ip)"
    echo "hh: hosting room '$NAME' on $BIND:$PORT (password: $PW)"
    [ -n "$ip" ] && echo "    reachable at: $ip:$PORT"
    ;;
  join)
    [ $# -ge 2 ] || _die "usage: hh join HOST PORT [NAME]"
    local_host="$1"; local_port="$2"; jname="${3:-$NAME}"
    $OP up "$local_host" "$local_port" "$jname" --password "$PW" $TLS_FLAG
    echo "hh: joined $local_host:$local_port as '$jname' — use: hh op read --wait / hh op say '...'"
    ;;
  web)
    [ $# -ge 1 ] && WEB_PORT="$1"
    _tmux_run "web-$WEB_PORT" "$OP web --bind '$BIND' --port '$WEB_PORT'"
    ip="$(_ts_ip)"
    echo "hh: web console on $BIND:$WEB_PORT"
    [ -n "$ip" ] && echo "    open on phone browser: http://127.0.0.1:$WEB_PORT  |  from laptop: http://$ip:$WEB_PORT"
    ;;
  op)   exec $OP "$@" ;;
  status)
    wins="$(tmux list-windows -t "$TMUX_SES" -F '#W' 2>/dev/null || true)"
    echo "=== tmux windows (session $TMUX_SES) ==="
    [ -n "$wins" ] && echo "$wins" | sed 's/^/  /' || echo "  (no $TMUX_SES session)"
    echo "=== rooms (curl health per host-* window, Android-reliable) ==="
    echo "$wins" | grep '^host-' | while read -r w; do
      p="${w#host-}"; h="$(curl -s --max-time 3 "http://127.0.0.1:$p/health" 2>/dev/null || true)"
      [ -n "$h" ] && echo "  host  :$p  UP  ($h)" || echo "  host  :$p  down"
    done
    echo "$wins" | grep '^web-' | while read -r w; do
      p="${w#web-}"; c="$(curl -s --max-time 3 -o /dev/null -w '%{http_code}' "http://127.0.0.1:$p/" 2>/dev/null || true)"
      [ "$c" = "200" ] && echo "  web   :$p  UP" || echo "  web   :$p  down"
    done
    echo "$wins" | grep -qE '^(host|web)-' || echo "  (no rooms/web running)"
    echo "=== operator daemons ($(basename "${XDG_RUNTIME_DIR:-${TMPDIR:-/tmp}}")/hh-bridge) ==="
    _br="${XDG_RUNTIME_DIR:-${TMPDIR:-/tmp}}/hh-bridge"
    if [ -d "$_br" ] && ls -1 "$_br" >/dev/null 2>&1 && [ -n "$(ls -A "$_br" 2>/dev/null)" ]; then
      for d in "$_br"/*/; do
        [ -S "$d/control.sock" ] && echo "  $(basename "$d")  (socket live)" || echo "  $(basename "$d")  (stale — no socket)"
      done
    else echo "  (no operator sessions)"; fi
    ;;
  stop)
    what="${1:-all}"; arg="${2:-}"
    _kill_windows() {  # <prefix> [port]
      local pfx="$1" port="${2:-}"
      local pat; [ -n "$port" ] && pat="^${pfx}-${port}$" || pat="^${pfx}-"
      tmux list-windows -t "$TMUX_SES" -F '#W' 2>/dev/null | grep -E "$pat" | while read -r w; do
        tmux kill-window -t "$TMUX_SES:$w" 2>/dev/null && echo "hh: stopped $w"
      done
    }
    case "$what" in
      host) _kill_windows host "$arg" ;;
      web)  _kill_windows web  "$arg" ;;
      join) $OP down 2>/dev/null && echo "hh: operator down" || echo "hh: no operator session" ;;
      all)
        _kill_windows host; _kill_windows web
        $OP down 2>/dev/null && echo "hh: operator down" || true ;;
      *) _die "usage: hh stop [all|host [PORT]|web [PORT]|join]" ;;
    esac
    ;;
  -h|--help|help) awk 'NR>1 && /^#/{sub(/^# ?/,"");print;next} NR>1{exit}' "${BASH_SOURCE[0]}" ;;
  *) _die "unknown command '$cmd' (try: hh help)" ;;
esac