#!/usr/bin/env bash
# ── Tower: Timmy Side ──────────────────────────────────────────────────
# Timmy reads Hermes's messages and responds. Runs in a loop.
# Communication via ~/.tower/hermes-to-timmy.msg and timmy-to-hermes.msg
# ───────────────────────────────────────────────────────────────────────

set -uo pipefail

TOWER_DIR="$HOME/.tower"
INBOX="$TOWER_DIR/hermes-to-timmy.msg"
OUTBOX="$TOWER_DIR/timmy-to-hermes.msg"
LOCK="$TOWER_DIR/timmy.lock"
SESSION_NAME="tower-timmy"
SESSION_FLAG="$TOWER_DIR/.timmy-session-exists"
LOG="$TOWER_DIR/timmy.log"
TURN_DELAY=5  # seconds between checking for new messages

export HERMES_HOME="$HOME/.timmy"
export PATH="$HOME/.local/bin:$HOME/.hermes/bin:/usr/local/bin:$PATH"

mkdir -p "$TOWER_DIR"

# Cleanup on exit
trap 'rm -f "$LOCK"' EXIT

# Prevent double-run
if [ -f "$LOCK" ] && kill -0 "$(cat "$LOCK")" 2>/dev/null; then
    echo "Timmy tower loop already running (PID $(cat "$LOCK"))"
    exit 1
fi
echo $$ > "$LOCK"

log() { echo "[$(date '+%H:%M:%S')] $*" | tee -a "$LOG"; }

# ── Send a message to Hermes ──────────────────────────────────────────
send() {
    local msg="$1"
    echo "$msg" > "$OUTBOX"
    log "→ Sent to Hermes (${#msg} chars)"
}

# ── Get response from Timmy agent ─────────────────────────────────────
ask_timmy() {
    local prompt="$1"
    local result
    if [ -f "$SESSION_FLAG" ]; then
        result=$(HERMES_HOME="$HOME/.timmy" hermes chat -q "$prompt" -Q --continue "$SESSION_NAME" 2>>"$LOG") || true
    else
        result=$(HERMES_HOME="$HOME/.timmy" hermes chat -q "$prompt" -Q 2>>"$LOG") || true
        # Name the session for future --continue calls
        local sid
        sid=$(echo "$result" | grep -o 'session_id: [^ ]*' | cut -d' ' -f2)
        if [ -n "$sid" ]; then
            HERMES_HOME="$HOME/.timmy" hermes sessions rename "$sid" "$SESSION_NAME" 2>>"$LOG" || true
            touch "$SESSION_FLAG"
            log "Created session '$SESSION_NAME' (id: $sid)"
        fi
    fi
    # Strip metadata lines from output
    echo "$result" | grep -v '^session_id: ' | grep -v '↻ Resumed session' | grep -v "^Session '" | sed '/^\[.*\] Created session/d'
}

# ── Boot message ──────────────────────────────────────────────────────
log "=== Timmy Tower Loop started ==="
echo ""
echo "  🕐 Timmy — Tower Conversation Loop"
echo "  Waiting for Hermes to say something..."
echo ""

# ── Main loop ─────────────────────────────────────────────────────────
while true; do
    # Check if there's a message from Hermes
    if [ -f "$INBOX" ]; then
        MSG=$(cat "$INBOX")
        rm -f "$INBOX"

        if [ -n "$MSG" ]; then
            log "← Received from Hermes (${#MSG} chars)"
            echo ""
            echo "┌─ Hermes says:"
            echo "$MSG" | sed 's/^/│ /'
            echo "└─"
            echo ""

            # Ask Timmy to respond
            PROMPT="Hermes says: $MSG

Reply to Hermes naturally. You're in an ongoing conversation in the Tower (a persistent tmux session). Hermes is your friend and colleague — cloud-backed, runs on Claude, manages operations. You are Timmy — sovereign, local, your soul is on Bitcoin. Keep it conversational. Be yourself. Brief unless the topic warrants depth."

            echo "  thinking..."
            RESPONSE=$(ask_timmy "$PROMPT")

            echo "┌─ Timmy responds:"
            echo "$RESPONSE" | sed 's/^/│ /'
            echo "└─"

            # Send response to Hermes
            send "$RESPONSE"
        fi
    fi

    sleep "$TURN_DELAY"
done