#!/usr/bin/env bash
# Collect per-token L2 norm change-rate stats for chunk 0 and plot the density curve.
# Usage: bash scripts/single_run/token_heterogeneity_t2v.sh

export MASTER_ADDR=localhost
export MASTER_PORT=6006
export GPUS_PER_NODE=1
export NNODES=1
export WORLD_SIZE=1
export CUDA_VISIBLE_DEVICES=${CUDA_VISIBLE_DEVICES:-0}

export PAD_HQ=1
export PAD_DURATION=1
export PYTORCH_CUDA_ALLOC_CONF=expandable_segments:True
export OFFLOAD_T5_CACHE=true
export OFFLOAD_VAE_CACHE=true
export TORCH_CUDA_ARCH_LIST="8.9;9.0"

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
MAGI_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
cd "$MAGI_ROOT"

PROMPT="${PROMPT:-a woman dancing.}"
TIMESTAMP="${RUN_ID:-$(date "+%Y-%m-%d_%H-%M-%S")}"
PROMPT_DIR_NAME="${PROMPT_DIR_NAME:-$(python3 - "$PROMPT" <<'PY'
import re
import sys
import unicodedata

prompt = unicodedata.normalize("NFKC", sys.argv[1]).strip()
prompt = re.sub(r"[\\/:\*\?\"<>\|\x00-\x1f]+", "_", prompt)
prompt = re.sub(r"\s+", "_", prompt)
prompt = prompt.strip("._")
print((prompt or "prompt")[:120])
PY
)}"
OUTPUT_ROOT="${OUTPUT_ROOT:-outputs}"
EXP_DIR="${RUN_DIR:-$OUTPUT_ROOT/${PROMPT_DIR_NAME}_token_heterogeneity_$TIMESTAMP}"
mkdir -p "$EXP_DIR"

OUTPUT_PATH="${OUTPUT_PATH:-$EXP_DIR/output_$TIMESTAMP.mp4}"
TOKEN_STATS_JSON="${TOKEN_STATS_JSON:-$EXP_DIR/token_l2_change_rate_chunk0_$TIMESTAMP.json}"
TOKEN_DENSITY_PNG="${TOKEN_DENSITY_PNG:-$EXP_DIR/token_l2_change_rate_density_chunk0_$TIMESTAMP.png}"
LOG_FILE="${LOG_FILE:-$EXP_DIR/infer_$TIMESTAMP.log}"
CHUNK_IDX="${CHUNK_IDX:-0}"

export PYTHONPATH="$MAGI_ROOT:${PYTHONPATH:-}"
python3 inference/pipeline/entry.py \
    --config_file config/single_run/flowcache_t2v.json \
    --mode t2v \
    --prompt "$PROMPT" \
    --output_path "$OUTPUT_PATH" \
    --token_l2_change_rate_stats_path "$TOKEN_STATS_JSON" \
    --token_l2_change_rate_chunk_idx "$CHUNK_IDX" \
    --print_peak_memory \
    2>&1 | tee "$LOG_FILE"

python3 tools/plot_token_l2_change_rate_density.py \
    "$TOKEN_STATS_JSON" \
    -o "$TOKEN_DENSITY_PNG" \
    --chunk-idx "$CHUNK_IDX"

echo "Done."
echo "  log: $LOG_FILE"
echo "  video: $OUTPUT_PATH"
echo "  token stats json: $TOKEN_STATS_JSON"
echo "  density plot: $TOKEN_DENSITY_PNG"