#!/usr/bin/env bash
# Start or attach to tmux agent session (Claude on-demand)

SESSION_NAME="agent"
WORKDIR="/workspace"

# ---- NVM bootstrap (available, not forced) ----
export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"

NVM_LOAD='
export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"
'

# ---- Clean stale socket if tmux server is dead ----
TMUX_SOCK="/tmp/tmux-$(id -u)/default"
if [ -e "$TMUX_SOCK" ] && ! tmux ls &>/dev/null; then
    rm -f "$TMUX_SOCK"
fi

# ---- Attach if exists ----
if tmux has-session -t "$SESSION_NAME" 2>/dev/null; then
    echo "Attaching to existing session: $SESSION_NAME"
    tmux attach-session -t "$SESSION_NAME"
    exit 0
fi

echo "Creating new session: $SESSION_NAME"

# ---- Create session ----
tmux new-session -d -s "$SESSION_NAME" -c "$WORKDIR"

# ---- Enable mouse (click between panes + scroll) ----
tmux set-option -g mouse on

# Pane 2: Right
tmux split-window -h -t "$SESSION_NAME:1" -c "$WORKDIR"

# ---- Focus left pane & attach ----
tmux select-pane -t "$SESSION_NAME:1.1"
tmux attach-session -t "$SESSION_NAME"