#!/bin/bash

# Bash script that will request multiple pages from Jamf showing the HTTP 500 error that sometimes 
# occurs due to 'Ghost' devices.
#
# This script should be run, and the script and output shared with Jamf support to create a ticket
# with Jamf to get the issue resolved.
#
# Before running, set the following parameters
#
# export CLIENT_ID=your_client_id_here
# export CLIENT_SECRET=your_client_secret_here
# export HOST=yourorg.jamfcloud.com
# export NUM_PAGES=20
#
# Then save the script locally and do:
# chmod +x ./showHTTP500.sh && ./showHTTP500.sh

# Ensure HOST, CLIENT_ID, and CLIENT_SECRET are set
if [ -z "$HOST" ] || [ -z "$CLIENT_ID" ] || [ -z "$CLIENT_SECRET" ]; then
  echo "HOST, CLIENT_ID, and CLIENT_SECRET must all be set. Please set them before running this script."
  exit 1
fi

# Use NUM_PAGES if exported, else default to 20
NUM_PAGES=${NUM_PAGES:-20}

cat <<EOT
Hi there,

The vendor we work with (Trelica) is having trouble with accessing data from the Jamf API.

The API is returning an HTTP 500 error message.

Trelica say that other customers have had similar issues with Jamf, and Jamf support have investigated and fixed the issues.

The issue occurs calling this endpoint:

/api/v1/computers-inventory/?section=GENERAL&section=USER_AND_LOCATION&section=HARDWARE&section=PURCHASING&section=DISK_ENCRYPTION&section=APPLICATIONS&section=LICENSED_SOFTWARE&section=GROUP_MEMBERSHIPS&section=OPERATING_SYSTEM&page-size=100

Jamf support have previously explained that “phantom” computers cause these API issues. Computers that were deleted from Jamf, at the same time the computer was checking in to Jamf, cause it to be stuck in a state of limbo.

For other Trelica customers who have reported this issue to Jamf, Jamf had to perform some maintenance to clear this up.

Please can you perform this maintenance and let me know when it's complete. 

Here is the output of a script that reproduces the issue:
EOT

export ACCESS_TOKEN=$(curl -s -X POST https://$HOST/api/oauth/token \
     -H "Content-Type: application/x-www-form-urlencoded" \
     -d "grant_type=client_credentials" \
     -d "client_id=$CLIENT_ID" \
     -d "client_secret=$CLIENT_SECRET" | jq -r '.access_token')

# Ensure ACCESS_TOKEN is set
if [ -z "$ACCESS_TOKEN" ]; then
  echo "ACCESS_TOKEN is not set. Please set it before running this script."
  exit 1
fi

# Base URL
BASE_URL="https://$HOST/api/v1/computers-inventory"
# Sections to include in the request
SECTIONS="section=GENERAL&section=USER_AND_LOCATION&section=HARDWARE&section=PURCHASING&section=DISK_ENCRYPTION&section=APPLICATIONS&section=LICENSED_SOFTWARE&section=GROUP_MEMBERSHIPS&section=OPERATING_SYSTEM"
# Page size
PAGE_SIZE=100

# Loop to make multiple requests with incrementing page number
for PAGE in $(seq 1 $NUM_PAGES)
do
  # Construct the full URL with the current page number
  URL="${BASE_URL}?${SECTIONS}&page-size=${PAGE_SIZE}&page=${PAGE}"
  
  # Make the request and print the response headers
  echo "Requesting page ${PAGE}..."
  curl -s -o /dev/null -w "HTTP Status: %{http_code}\nResponse Headers:\n%{header_json}\n\n" \
       -H "Authorization: Bearer $ACCESS_TOKEN" \
       "$URL"
done