#!/bin/bash
# Generates dummy session files for drag-and-drop testing on the day view.
# Files are tiny (just named correctly) — the browser File API only reads metadata.
#
# Usage:  bash generate_test_files.sh [DATE] [IDS...]
#   DATE   defaults to today (YYYY-MM-DD)
#   IDS    defaults to the three real subject IDs from the reach-task experiment
#
# Output: ./session_files/<DATE>/

DATE=${1:-$(date +%Y-%m-%d)}
shift
SUBJECTS=("${@}")

if [ ${#SUBJECTS[@]} -eq 0 ]; then
  # Default IDs matching the real subjects in the experiments database
  # (animal_id_string values visible on the day view)
  SUBJECTS=("2852" "3076" "3077" "3078")
fi

OUTDIR="./session_files/${DATE}"
mkdir -p "$OUTDIR"

echo "Generating test files in ${OUTDIR}/ for subjects: ${SUBJECTS[*]}"
echo ""

for ID in "${SUBJECTS[@]}"; do
  # File 1: large binary session recording (~placeholder, 0 bytes in test)
  # Real file would be ~10 GB (e.g. raw ephys .bin)
  BIN1="${OUTDIR}/${DATE}_${ID}_ephys_raw.bin"
  touch "$BIN1"
  echo "  [~10 GB] ${DATE}_${ID}_ephys_raw.bin"

  # File 2: large HDF5 spike-sorted output (~placeholder, 0 bytes in test)
  # Real file would be ~10 GB (e.g. kilosort output .h5)
  BIN2="${OUTDIR}/${DATE}_${ID}_kilosort.h5"
  touch "$BIN2"
  echo "  [~10 GB] ${DATE}_${ID}_kilosort.h5"

  # File 3: CSV trial events (~10 MB real, 1 KB here)
  CSV1="${OUTDIR}/${DATE}_${ID}_trials.csv"
  {
    echo "trial_num,timestamp,outcome,reaction_time_ms,reward"
    for i in $(seq 1 20); do
      OUTCOME=$( [ $((RANDOM % 3)) -eq 0 ] && echo "Failure" || echo "Success" )
      printf "%d,%.3f,%s,%d,%d\n" \
        "$i" "$(echo "$i * 0.823 + 1.0" | bc -l 2>/dev/null || echo $i)" \
        "$OUTCOME" "$((RANDOM % 400 + 50))" "$((RANDOM % 2))"
    done
  } > "$CSV1"
  echo "  [~10 MB] ${DATE}_${ID}_trials.csv"

  # File 4: CSV behavioral log (~10 MB real, small here)
  CSV2="${OUTDIR}/${DATE}_${ID}_behavior_log.csv"
  {
    echo "ts,event,value,notes"
    echo "0.000,session_start,1,"
    echo "1.234,trial_start,1,"
    echo "1.856,reach_onset,1,"
    echo "2.102,reach_end,1,"
    echo "2.103,outcome,Success,"
    echo "3.500,trial_start,2,"
    echo "4.100,reach_onset,1,"
    echo "4.950,outcome,Failure,"
    echo "9999.9,session_end,1,"
  } > "$CSV2"
  echo "  [~10 MB] ${DATE}_${ID}_behavior_log.csv"
  echo ""
done

TOTAL=$(find "$OUTDIR" -type f | wc -l)
echo "Done — ${TOTAL} files in ${OUTDIR}/"
echo ""
echo "Drag the entire '${DATE}' folder into the day-view drop zone at:"
echo "  https://experiments.sam-tran.com/experiments/<id>/day/${DATE}?field=<fieldId>"