#!/bin/bash
# Run UD conversion with results saved to timestamped folder
# Usage: ./run_conversion.sh <input_file> [batch_size]

set -e

INPUT_FILE="${1:-sentences_200.txt}"
BATCH_SIZE="${2:-64}"
TIMESTAMP=$(date +"%Y%m%d_%H%M%S")
RESULTS_DIR="results/${TIMESTAMP}"

echo "=== UDD Conversion Run ==="
echo "Timestamp: ${TIMESTAMP}"
echo "Input: ${INPUT_FILE}"
echo "Batch size: ${BATCH_SIZE}"
echo "Results dir: ${RESULTS_DIR}"
echo ""

# Create results directory
mkdir -p "${RESULTS_DIR}"

# Save run info
cat > "${RESULTS_DIR}/run_info.txt" << EOF
Timestamp: ${TIMESTAMP}
Input file: ${INPUT_FILE}
Batch size: ${BATCH_SIZE}
Start time: $(date)
Host: $(hostname)
EOF

# Get GPU info
if command -v nvidia-smi &> /dev/null; then
    echo "GPU: $(nvidia-smi --query-gpu=name --format=csv,noheader)" | tee -a "${RESULTS_DIR}/run_info.txt"
    echo "GPU Memory: $(nvidia-smi --query-gpu=memory.total --format=csv,noheader)" | tee -a "${RESULTS_DIR}/run_info.txt"
fi

echo ""
echo "Starting conversion..."
START_TIME=$(date +%s)

# Start GPU monitoring in background
if command -v nvidia-smi &> /dev/null; then
    nvidia-smi --query-gpu=timestamp,utilization.gpu,utilization.memory,memory.used,memory.total \
        --format=csv -l 2 > "${RESULTS_DIR}/gpu_stats.csv" 2>&1 &
    GPU_PID=$!
fi

# Run conversion
python scripts/convert_to_ud.py \
    -i "${INPUT_FILE}" \
    -o "${RESULTS_DIR}" \
    -p "output" \
    -b "${BATCH_SIZE}" \
    2>&1 | tee "${RESULTS_DIR}/conversion.log"

END_TIME=$(date +%s)
DURATION=$((END_TIME - START_TIME))

# Stop GPU monitoring
if [ ! -z "${GPU_PID}" ]; then
    kill ${GPU_PID} 2>/dev/null || true
fi

# Calculate stats
MINUTES=$((DURATION / 60))
SECONDS=$((DURATION % 60))

# Count sentences
if [ -f "${RESULTS_DIR}/output.jsonl" ]; then
    NUM_SENTENCES=$(wc -l < "${RESULTS_DIR}/output.jsonl")
    SPEED=$(echo "scale=2; ${NUM_SENTENCES} / ${DURATION}" | bc 2>/dev/null || echo "N/A")
else
    NUM_SENTENCES="N/A"
    SPEED="N/A"
fi

# Save summary
cat >> "${RESULTS_DIR}/run_info.txt" << EOF

End time: $(date)
Duration: ${MINUTES}m ${SECONDS}s (${DURATION} seconds)
Sentences: ${NUM_SENTENCES}
Speed: ${SPEED} sentences/sec
EOF

echo ""
echo "=== Summary ==="
echo "Duration: ${MINUTES}m ${SECONDS}s"
echo "Sentences: ${NUM_SENTENCES}"
echo "Speed: ${SPEED} sentences/sec"
echo "Results saved to: ${RESULTS_DIR}/"
echo ""
echo "Files:"
ls -la "${RESULTS_DIR}/"

# Generate GPU stats table if available
if [ -f "${RESULTS_DIR}/gpu_stats.csv" ]; then
    echo ""
    echo "=== GPU Stats (last 10 samples) ==="
    tail -10 "${RESULTS_DIR}/gpu_stats.csv" | column -t -s ','
fi