#!/usr/bin/env bash
# Runs the staged curriculum (see TRAINING.md, curriculum.py) detached from
# your SSH session, the same way start_training.sh does for a single run —
# safe to disconnect any time. Uses its own tmux session ("cosmic-curriculum")
# so it doesn't collide with a manual next_run.sh/start_training.sh run.
#
# Usage: ./curriculum.sh [curriculum.py args...]
# e.g.:  ./curriculum.sh
#        ./curriculum.sh --seed-checkpoint checkpoints/run11/final.zip
#        ./curriculum.sh --force-retry
set -euo pipefail
cd "$(dirname "$0")"

SESSION="cosmic-curriculum"
TB_PORT=6006

command -v tmux >/dev/null 2>&1 || { echo "tmux is required: sudo apt install tmux" >&2; exit 1; }

if tmux has-session -t "$SESSION" 2>/dev/null; then
    echo "Session '$SESSION' already running — attaching (detach with Ctrl-B then D)."
    exec tmux attach -t "$SESSION"
fi

tmux new-session -d -s "$SESSION" -n curriculum \
    ".venv/bin/python curriculum.py $*; echo; echo '=== curriculum.py exited — press Enter to close ==='; read"

if ! (exec 3<>"/dev/tcp/127.0.0.1/$TB_PORT") 2>/dev/null; then
    tmux new-window -d -t "$SESSION" -n dashboard \
        ".venv/bin/tensorboard --logdir logs --host 0.0.0.0 --port $TB_PORT"
fi

IP=$(hostname -I 2>/dev/null | awk '{print $1}')
echo "Curriculum started in tmux session '$SESSION' — SSH disconnects won't touch it."
echo "  watch it:   tmux attach -t $SESSION   (detach again with Ctrl-B then D)"
echo "  dashboard:  http://${IP:-<this-box>}:$TB_PORT"
echo "  progress:   cat curriculum_state.json"