#!/usr/bin/env bash
# PreToolUse hook on the Bash tool — fire a Telegram heartbeat *before* the
# command runs, so the user sees "I'm doing X" within ~1 second of any Bash
# call, no matter what command Claude is running.
#
# Also records the start time at /tmp/.bash-hb-<pid> so the matching
# PostToolUse hook can compute duration and decide whether to send a
# completion ping.
#
# Skips heartbeats for certain noisy / tg-stream-itself commands so we don't
# loop. Skips when the description doesn't carry useful info.
#
# Input: JSON {"tool_name":"Bash","tool_input":{"command":"...","description":"..."}}
# Output: always exit 0 (advisory hook, never blocks).

set -u
INPUT=$(cat)

PARSED=$(node -e '
let raw = "";
process.stdin.on("data", c => raw += c);
process.stdin.on("end", () => {
  try {
    const j = JSON.parse(raw);
    const cmd = (j.tool_input && j.tool_input.command) || "";
    const desc = (j.tool_input && j.tool_input.description) || "";
    // Skip if this Bash call is itself a Telegram stream/task (avoid loops)
    if (/tg-stream|tg-task|telegram\.org\/bot/.test(cmd)) {
      console.log("SKIP");
      return;
    }
    // Skip trivial reads (ls, cat, echo on their own)
    if (/^(ls|pwd|whoami|date|echo)( |$)/.test(cmd.trim())) {
      console.log("SKIP");
      return;
    }
    console.log("FIRE\t" + (desc || cmd.slice(0, 80)).replace(/\t/g, " "));
  } catch (e) {
    console.log("SKIP");
  }
});
' <<<"$INPUT")

ACTION=$(echo "$PARSED" | cut -f1)
LABEL=$(echo "$PARSED" | cut -f2-)

if [[ "$ACTION" != "FIRE" ]]; then
  exit 0
fi

# Record start time keyed by parent shell PID so PostToolUse can pair it
echo "$(date +%s)|$LABEL" > "/tmp/.bash-hb-$PPID" 2>/dev/null || true

# Fire the heartbeat (no-stream so it lands instantly without typing animation)
/host/root/openclaw/tg-stream --no-stream "🔧 $LABEL" >/dev/null 2>&1 &

exit 0