printer-raspberry-pi/prusaconnect

#!/bin/bash

# Set default values for environment variables
: "${PRUSA_CONNECT_URL:=https://webcam.connect.prusa3d.com/c/snapshot}"
: "${WEBCAM_SNAPSHOT_URL:=http://127.0.0.1:8080/snapshot}"
: "${PRUSA_LINK_STATUS_URL:=http://192.168.0.130/api/v1/status}"
: "${DELAY_SECONDS:=10}"
: "${LONG_DELAY_SECONDS:=60}"
: "${IMG_PATH:=$HOME/output.jpg}"

# secrets
: "${PRUSA_CONNECT_CAMERA_FINGERPRINT:=FINGERPRINT}"
: "${PRUSA_CONNECT_CAMERA_TOKEN:=TOKEN}"
: "${PRUSA_LINK_KEY:=KEY}"

source ./secrets

while true; do
  state=$(curl -m 5 -sSL $PRUSA_LINK_STATUS_URL -H "X-Api-Key: $PRUSA_LINK_KEY" | jq -r ".printer.state")
  if [ $state == "PRINTING" ]; then
    curl -k -sSL $WEBCAM_SNAPSHOT_URL -o $IMG_PATH
    # If no error, upload it.
    if [ $? -eq 0 ]; then
      # POST the image to the HTTP URL using curl
      curl -X PUT "$PRUSA_CONNECT_URL" \
        -H "accept: */*" \
        -H "content-type: image/jpg" \
        -H "fingerprint: $PRUSA_CONNECT_CAMERA_FINGERPRINT" \
        -H "token: $PRUSA_CONNECT_CAMERA_TOKEN" \
        --data-binary "@$IMG_PATH" \
        --no-progress-meter \
        --compressed

        # Reset delay to the normal value
        DELAY=$DELAY_SECONDS
    else
      echo "Couldn't capture snapshot. Retrying after ${LONG_DELAY_SECONDS}s..."

      # Set delay to the longer value
      DELAY=$LONG_DELAY_SECONDS
    fi
  else
    echo "printer not printing. retrying after ${LONG_DELAY_SECONDS}s..."
    DELAY=$LONG_DELAY_SECONDS
  fi
  sleep "$DELAY"
  done