Randomised curl requests in bash.

send_events.sh

#!/bin/bash

# The url to post.
url="http://example.com"
# Token for your user.
bearer=""

start_event_body() {
  cat <<EOF
{
  "event_type": "game_started",
  "data": {}
}
EOF
}

timeout_event_body() {
  cat <<EOF
{
  "event_type": "timeout",
  "data": {}
}
EOF
}

numerical_event_body() {
  correct="false"
  rand=$((1 + RANDOM % 5))
  if [ $rand -gt 2 ]
  then
    correct="true"
  fi
  cat <<EOF
{
  "event_type": "problem_solved",
  "data": {
    "exercise": "4*1 ? 10*1",
    "difficulty": 2,
    "answer": "<",
    "correct": ${correct}
  }
}
EOF
}

moving_shape_event_body() {
  if [ $((1 + RANDOM % 10)) -gt 8 ]
  then
    nanoseconds=$(((6700 + RANDOM % 3000) * 999999))
    cat <<EOF
{
  "event_type": "target_missed",
  "data": {
    "difficulty": 2,
    "missed_target_time_of_disappear": ${nanoseconds}
  }
}
EOF
  else
    correct="false"
    if [ $((1 + RANDOM % 5)) -gt 2 ]
    then
    correct="true"
    fi
    nanoseconds=$(((3700 + RANDOM % 6000) * 999999))
    cat <<EOF
{
  "event_type": "target_clicked",
  "data": {
    "difficulty": 2,
    "correct": ${correct},
    "reaction_time": ${nanoseconds}
  }
}
EOF
  fi
}

send_event() {
  # echo "Request body: $($1)"
  echo "Sendging a request..."
  curl \
  -H "Content-type: application/json" \
  -H "Authorization: Bearer ${bearer}" \
  --data "$($1)" \
  -k \
  ${url}
  echo "Request sent"

  sleep_timer=$(awk -v min=1 -v max=3 'BEGIN{srand(); print min+rand()*(max-min+1)}')
  sleep ${sleep_timer}
}

for (( i=0; i<=50; i++ ))
do
  if [ $i -eq 0 ]
  then
    send_event "start_event_body"
    continue
  fi

  if [ $((1 + RANDOM % 2)) -eq 1 ]
  then
    send_event "numerical_event_body"
  else
    send_event "moving_shape_event_body"
  fi

  if [ $i -eq 50 ]
  then
    send_event "timeout_event_body"
  fi
done