#!/usr/bin/env bash
#
# Set all missing grades, specify query using the options below

function print_help_and_exit() {
  printf "Usage: set-missing-grades OPTIONS\n"
  printf "\n"
  printf "Options:\n"
  printf "  -g, --group <group_id>\n"
  printf "          Filter by group\n"
  printf "  -s, --subject <subject_id>\n"
  printf "          Filter by subject\n"
  printf "  -i, --interval <interval_id>\n"
  printf "          Filter by interval\n"
  printf "  -t, --token <token>\n"
  printf "          Token to use for requests\n"
  exit 1
}

QUERY="interpolate=true&include=grades"
TOKEN=

while [[ $# -gt 0 ]]; do
  case $1 in
    -h|--help)
      print_help_and_exit
      ;;
    -g|--group)
      shift # past argument
      QUERY+="&filter\[group\]=$1"
      shift # past value
      ;;
    -s|--subject)
      shift # past argument
      QUERY+="&filter\[subject\]=$1"
      shift # past value
      ;;
    -i|--interval)
      shift # past argument
      QUERY+="&filter\[interval\]=$1"
      shift # past value
      ;;
    -t|--token)
      shift # past argument
      TOKEN="$1"
      shift # past value
      ;;
    -*)
      echo "Unknown option $1"
      print_help_and_exit
      ;;
    *)
      echo "Unknown additional argument $1"
      print_help_and_exit
      ;;
  esac
done

if [[ -z "$TOKEN" ]]; then
  printf "Token is required!\n"
  print_help_and_exit
fi

LIST=$(curl "http://localhost:8000/api/collections?$QUERY" -H "Authorization: Bearer $TOKEN" | jq '.data[] | { collection_id: .id, student_id: (.grades[] | select(.value == "") | .student.id) }' -r --compact-output)

for item in $LIST; do
  collection_id=$(echo "$item" | jq '.collection_id')
  student_id=$(echo "$item" | jq '.student_id')
  value=$((RANDOM % 6 + 1))
  given_at=$(date +"%Y-%m-%d")
  data=$(jq -n --compact-output "{ collection_id: $collection_id, student_id: $student_id, value: $value, given_at: \"$given_at\" }")

  printf "Setting grade for %6s in collection %6s to %2s.." "$student_id" "$collection_id" "$value"
  echo "$data" | curl -s 'http://localhost:8000/api/grades' -H "Authorization: Bearer $TOKEN" -X POST --json @- >/dev/null 
  printf "done\n"
done