[Security] Code Refactor of Handing the LOB API Key

[Alex-is-Gonzalez]

Task

You will be working in this file : https://github.com/OpenSourceFellows/amplify/blob/main/server/routes/api/lob.js

// Temporary implementation for fallback with deprecation warnings line 396 - 417
function getLobApiKey() {
  const { LOB_API_KEY, LiveLob } = process.env
  const lobApiKey = LOB_API_KEY || LiveLob

  if (LiveLob) {
    if (LOB_API_KEY) {
      console.warn('Using "LOB_API_KEY" environment variable.')
      console.warn(
        'Please remove your deprecated "LiveLob" environment variable!'
      )
    } else {
      console.warn('Expected "LOB_API_KEY" environment variable was not found.')
      console.warn(
        'Falling back to deprecated "LiveLob" environment variable....'
      )
      console.warn('Please update your environment to use the expected key!')
    }
  }

  return lobApiKey
}

To update this code for better security, clarity, and handling of deprecated environment variables, you can refactor it as follows:
Ask AI to refactor this code snippet to handle error, warning and constant. You should be able to copy the code about and the tasks and ask for an output applying the principle of least privilege

• Error Handling: Instead of just logging warnings, you can throw errors if the expected environment variable is missing.
• Clarify Warnings: Ensure the warnings are clear and actionable.
• Use Constants: Define constants for environment variables to make the code more readable.

[Dunridge]

Branch: issue-976

[Dunridge]

Branch: issue-976