script to download the Concept2 firmware files similar to what Concept2 Utility does

getConcept2Firmwares.sh

#!/bin/bash

# UNOFFICIAL script to download the Concept2 firmwares for PM3/4/5 monitors for rower/skierg/bike
# similar to what the Concept2 Utility does: first retrieve list of available firmwares and then download them

# optional parameters
# -d <folder> e.g. /Volumes/MYCONCEPT2USB/Concept2/Firmware  (default: $HOME/Downloads/Concept2/Firmware)
# -s [public | beta]  (default: "public")

# --------------------------------------------------------------------------------------
# Concept2 Utility uses basic auth to get the list of latest firmwares
# to find the token use e.g. https://mitmproxy.org/ or ProxyMan and run Concept2 Utility
# look for request to https://tech.concept2.com/api/firmware/latest
# you can store the token in .env or put it in this script
# --------------------------------------------------------------------------------------
[[ -f ".env" ]] && source .env
[[ -z $TOKEN ]] && TOKEN="Authorization: Basic Y...U=" # <<< CHANGE HERE OR IN .env FILE
# --------------------------------------------------------------------------------------

UNZIP="/usr/local/bin/7z"
JQ="/usr/local/bin/jq"

DESTINATION=$HOME/Downloads/Concept2/Firmware
STATUS="public"

# parse the parameters
while getopts ":d:s:" opt; do
  case $opt in
    d) DESTINATION="$OPTARG"
      ;;
    s) STATUS="$OPTARG"
      ;;
    :)
      echo "Option -$OPTARG requires an argument." >&2
      exit 1
      ;;
  esac
done

# helper function to print text in green
log () { echo -e "\033[0;32m${*}\033[0m"; }

mkdir -p $DESTINATION

log "*all* available firmware versions + files (note: a version can have multiple files)"
curl -s "https://tech.concept2.com/api/firmware/latest" -H "$TOKEN" | $JQ -r '.data | sort_by(.release_date) | .[] | [.status, .machine, .release_date, .short_description, .files[].name] | @tsv'

echo
read -p "Do you want to download the ${STATUS} files to ${DESTINATION}? " -n 1 -r
echo
# if not: exit
[[ ! $REPLY =~ ^[Yy]$ ]] && exit 0

# create comma separated string of the filenames
FILES=$(curl -s "https://tech.concept2.com/api/firmware/latest" -H "$TOKEN" | $JQ -r ".data | map(select(.status == \"$STATUS\")) | map(.files[].name) | join(\",\")")

BASEURL=https://firmware.concept2.com/files

# get those files (and keep original creation timestamp)
log "downloading the ${STATUS} firmware files to ${DESTINATION}"
(cd $DESTINATION && curl -s -O -R "$BASEURL/{$FILES}")

# unzip them
log "unzipping the files in ${DESTINATION}"
(cd $DESTINATION && $UNZIP e -y "*.7z" > /dev/null)

log "these firmwares are available:"
(cd $DESTINATION && ls -trl *.7z)

echo
log "make sure these files end up in folder 'Concept2/Firmware' on your USB stick"