Add certificate download functionality to Certificate page #60
Description
Currently, the Certificate page allows users to view the certificate ID, but there is no feature to download a digital version of the certificate. For a comprehensive user experience and to support verification or sharing, it is important to allow users to download their certificates.
Proposed enhancement:
- Implement a 'Download PDF' button on the Certificate page.
- When clicked, the button should initiate a request to a backend endpoint (e.g.,
/api/certificates/:certificateId/download). - The API should return a PDF (or specified file type) of the certificate for the given certificate ID.
- Initiate a file download on successfully receiving the file from the backend. Show appropriate messaging on errors.
- Ensure that the certificateId is validated/encoded and error handling is present on the frontend.
- (Optional) Style the button and error states for better user experience.
Benefits:
- Improves usability by letting users securely retain or send proof of course completion.
- Standardizes certificate management for end users.
Acceptance criteria:
- Button visible when certificate ID is present.
- Download is successful for valid IDs and appropriate error is shown if the download fails.
- UI reflects loading and error states.