start

#!/bin/bash
# Start the CampaignGenerator server in the background with persistent logs.
# Wraps ./startup — accepts the same arguments.
#
# Usage (from anywhere):
#   ~/CampaignGenerator/start \
#       --campaign-dir ~/campaigns/out-of-the-abyss \
#       --session-dir summaries/20260404
#
# Multiple instances: each gets its own port. If the requested port (default
# 5000) is busy, the next free port is used automatically.  PID files are
# per-port (server-<port>.pid) so instances don't collide.
#
# --session-dir may be relative to --campaign-dir or an absolute path.
# Logs go to <session-dir>/logs/  (or CampaignGenerator/logs/ if no session).

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"

# ── Parse --campaign-dir, --session-dir, --port from args ──────────────────
CAMPAIGN_DIR_RAW=""
SESSION_DIR_RAW=""
PORT=5000
PREV=""
for ARG in "$@"; do
    case "$PREV" in
        --campaign-dir) CAMPAIGN_DIR_RAW="$ARG" ;;
        --session-dir)  SESSION_DIR_RAW="$ARG" ;;
        --port)         PORT="$ARG" ;;
    esac
    PREV="$ARG"
done

# ── Find a free port ───────────────────────────────────────────────────────
ORIGINAL_PORT=$PORT
while ss -tln 2>/dev/null | grep -q ":${PORT} "; do
    PORT=$((PORT + 1))
done
if [ "$PORT" -ne "$ORIGINAL_PORT" ]; then
    echo "Port $ORIGINAL_PORT is in use — using port $PORT instead"
fi

PID_FILE="$SCRIPT_DIR/server-${PORT}.pid"

# ── Check for already-running server on this port ──────────────────────────
if [ -f "$PID_FILE" ]; then
    OLD_PID="$(cat "$PID_FILE")"
    if kill -0 "$OLD_PID" 2>/dev/null; then
        echo "Server already running on port $PORT (PID $OLD_PID). Run $(dirname "$0")/stop --port $PORT first."
        exit 1
    else
        rm -f "$PID_FILE"
    fi
fi

# Resolve campaign dir to absolute
if [ -n "$CAMPAIGN_DIR_RAW" ]; then
    CAMPAIGN_DIR_ABS="$(cd "$CAMPAIGN_DIR_RAW" 2>/dev/null && pwd)"
else
    CAMPAIGN_DIR_ABS=""
fi

# Resolve session dir: try absolute first, then relative to campaign dir
SESSION_DIR_ABS=""
if [ -n "$SESSION_DIR_RAW" ]; then
    if [ -d "$SESSION_DIR_RAW" ]; then
        SESSION_DIR_ABS="$(cd "$SESSION_DIR_RAW" && pwd)"
    elif [ -n "$CAMPAIGN_DIR_ABS" ] && [ -d "$CAMPAIGN_DIR_ABS/$SESSION_DIR_RAW" ]; then
        SESSION_DIR_ABS="$(cd "$CAMPAIGN_DIR_ABS/$SESSION_DIR_RAW" && pwd)"
    else
        echo "Error: session-dir '$SESSION_DIR_RAW' not found (tried absolute and relative to campaign-dir)."
        exit 1
    fi
fi

# ── Rebuild args with resolved absolute paths and port ────────────────────────
NEW_ARGS=()
PORT_IN_ARGS=false
PREV=""
for ARG in "$@"; do
    case "$PREV" in
        --campaign-dir)
            NEW_ARGS+=("${CAMPAIGN_DIR_ABS:-$ARG}")
            PREV="$ARG"
            continue
            ;;
        --session-dir)
            NEW_ARGS+=("${SESSION_DIR_ABS:-$ARG}")
            PREV="$ARG"
            continue
            ;;
        --port)
            NEW_ARGS+=("$PORT")
            PORT_IN_ARGS=true
            PREV="$ARG"
            continue
            ;;
    esac
    NEW_ARGS+=("$ARG")
    PREV="$ARG"
done
if ! $PORT_IN_ARGS; then
    NEW_ARGS+=("--port" "$PORT")
fi

# ── Determine log directory ──────────────────────────────────────────────────
if [ -n "$SESSION_DIR_ABS" ]; then
    LOG_BASE="$SESSION_DIR_ABS/logs"
elif [ -n "$CAMPAIGN_DIR_ABS" ]; then
    LOG_BASE="$CAMPAIGN_DIR_ABS/logs"
else
    LOG_BASE="$SCRIPT_DIR/logs"
fi

mkdir -p "$LOG_BASE"
LOG_FILE="$LOG_BASE/server-$(date +%Y%m%d-%H%M%S).log"

# ── Launch from campaign dir so ui_config.yaml lands in the right place ──────
LAUNCH_DIR="${CAMPAIGN_DIR_ABS:-$SCRIPT_DIR}"

echo "Starting Campaign Generator..."
[ -n "$CAMPAIGN_DIR_ABS" ] && echo "  Campaign: $CAMPAIGN_DIR_ABS"
[ -n "$SESSION_DIR_ABS"  ] && echo "  Session:  $SESSION_DIR_ABS"
echo "  Log:      $LOG_FILE"
echo ""

cd "$LAUNCH_DIR"
nohup "$SCRIPT_DIR/startup" "${NEW_ARGS[@]}" >> "$LOG_FILE" 2>&1 &
SERVER_PID=$!
echo "$SERVER_PID" > "$PID_FILE"

# Give the server a moment to start (or fail)
sleep 2
if ! kill -0 "$SERVER_PID" 2>/dev/null; then
    rm -f "$PID_FILE"
    echo "Server failed to start. Last log output:"
    echo ""
    tail -20 "$LOG_FILE"
    exit 1
fi

echo "Server started (PID $SERVER_PID) on port $PORT"
echo "Open http://localhost:$PORT in your browser"
echo ""
echo "  tail -f $LOG_FILE"
echo "  $(dirname "$0")/stop --port $PORT"