[Subscriber Features] Premium Article Access

[nban22]

Objective

Restrict access to premium articles for non-subscribers and allow subscribers to download PDF versions of premium articles.

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Requirements

1. Restrict Access for Non-Subscribers

   • Non-subscribers should be prevented from viewing the full content of premium articles.
   • Instead of displaying the full article, non-subscribers should be shown a message or a preview of the content, along with a prompt to subscribe to gain full access. This can be implemented as a content teaser or summary.
   • Example: "This is a premium article. Subscribe to view the full content."

2. Subscription Check for Premium Articles

   • Before displaying the content of a premium article, check if the user is a subscriber. If the user is not a subscriber, redirect them to a subscription page or show the message mentioned above.
   • Use session data, cookies, or JWT tokens to check whether the user is logged in and if they have an active subscription. If they do not have a valid subscription, restrict access.
   • Example: If the user is not a subscriber, the server should return a restricted access response, or simply redirect them to the subscription page.

3. Allow PDF Downloads for Subscribers

   • Subscribers should be able to download premium articles in PDF format.
   • Implement a download button or link in the article detail page that allows subscribers to download the article as a PDF file.
   • Ensure that the PDF includes the full content of the article, including the title, content, tags, and any other relevant information (e.g., images).
   • Use a library like pdfkit or puppeteer to generate the PDF from the article content.

4. PDF Generation

   • Implement a backend route to generate the PDF for premium articles when requested.
   • For each premium article, ensure the backend can convert the article's HTML content into a downloadable PDF.
   • Example: When a user clicks on the "Download PDF" button, the backend will dynamically generate the PDF and serve it to the user.

5. Access Control for PDF Download

   • Ensure that only subscribers can request the PDF download. If a non-subscriber tries to access the PDF, redirect them to the subscription page or show a message prompting them to subscribe.
   • Example: If a non-subscriber clicks the download button, the system should display a message like: "Please subscribe to download this article in PDF format."

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Deliverables

• Access Control Implementation: Add access control logic to check if a user is a subscriber before showing the full content of premium articles or allowing PDF downloads.
• Content Teaser for Non-Subscribers: Display a teaser or summary for non-subscribers with a message prompting them to subscribe for full access.
• PDF Download Functionality: Implement PDF generation for premium articles, ensuring that only subscribers can download them.
• Backend Route for PDF Generation: Create a backend route to handle the generation and download of PDFs for premium articles.
• Subscription Check for PDF Download: Implement subscription verification before allowing PDF download for premium articles.

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Acceptance Criteria

• Restricted Access: Non-subscribers cannot view the full content of premium articles and are prompted to subscribe.
• Subscription Validation: Subscribers can access full premium content and download the article in PDF format.
• PDF Download: The "Download PDF" button works correctly for subscribers, and the PDF includes the full article content.
• Access Control for PDF: Non-subscribers are prevented from downloading premium articles in PDF format and are redirected to the subscription page.