Find available appointments at Quest Diagnostics labs

quest.sh

#!/usr/bin/env bash

# SPDX-FileCopyrightText: 2021 Kirill Elagin <https://kir.elagin.me/>
# SPDX-License-Identifier: CC0-1.0

###
#
# Find available appointments at Quest Diagnostics labs.
#
# This quick-and-dirty script queries their appointment scheduling API
# and does some trivial processing to display the available slots.
#
# Unlike the official website, it queries appointments for a range of dates
# instead of just a single one. Also, the output is generally less noisy.
# On top of that, it turns out, their API gives current waiting time for
# each location, so it shows those too.
#
# Use:
#
#   1. Download this script.
#
#   2. Start scheduling an appointment on their website, proceed until the
#      calendar view. Open Developer Tools in your web-browser and take note
#      of the `facilityServiceId` that it sends – it will depend on what services
#      you chose. Fill it in in the query below.
#      (The currently pre-filled ones are for an employer drug test.)
#
#   3. Edit the “from” and “to” dates in the query below. Make sure the “from”
#      date is not in the past (i.e. at least today).
#
#   4. Edit the geographic location in the query below. You can get the coordinates
#      by right-clicking in Google Maps.
#
#   5. Run the script.
#
# Dependencies:
#
#   * curl
#   * jq
#
# e.g. `nix-shell -p curl jq`
###

query=$(cat<<EOF
{
  "facilityServiceId":[18,12],

  "fromDate":"2021-12-29",
  "toDate":"2022-01-05",

  "latitude": 42.34519,
  "longitude": -71.11076,
  "miles":1,
  "maxReturn":2,

  "firstPscToReturn":0,
  "filterForAvailability":false,
  "includeWaitTime":true,
  "onlyAvailableSlots":true
}
EOF
)

######################

# Get some session cookie
cookies="/tmp/quest.cookies"
if [ ! -f "$cookies" ]; then
  curl -s \
    -c "$cookies" \
    'https://appointment-beta.questdiagnostics.com/schedule-appointment/' \
    >/dev/null
fi

res=$(curl -s --fail-with-body \
  -b "$cookies" -b "CSRF-TOKEN=x" -H "X-CSRF-TOKEN: x" \
  -H 'Content-Type: application/json' -X POST --data "$query" \
  'https://appointment-beta.questdiagnostics.com/guest/getPscsWithAvailability'
)

if [ "$?" -ne 0 ]; then
  printf 'Error (not 200): %s\n' "$res" >&2
  exit 1
fi

jq_expr='.data[] | {name, waitTime, "avail": (.availability | map(select(.slots | length > 0) | {"date": .date, "slots": .slots | map(.time)}))}'
echo "$res" | jq "$jq_expr"