[93] feat: pdf generation service

[shivankurchavan]

Draft PR

till now :

https://github.com/SamagraX-Stencil/stencil/assets/61339210/a5cd9b8b-2825-4414-b5de-e6d9eccf0fa6

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[Savio629]

The pdf service is generating pdf on basis of given template.html and data.csv

It is working similar to fileupload service

The issue is if the data is huge then it can reach the limit

{
    "statuscode": 201,
    "data": [
        {
            "data": {
                "message": {
                    "statusCode": 500,
                    "message": "Certificate generation failed",
                    "errors": "Timed out after waiting 30000ms"
                },
                "statusCode": 201
            },
            "errors": []
        }
    ]
}

Should we ask an optional timeout from the user as a query?

https://github.com/user-attachments/assets/a37dfc1d-5999-4193-94a4-64670e69e789

The certificate comes out to be something like this

[Savio629]

93

[techsavvyash]

@Savio629

1. What solution do you propose for solving the large data issue?
2. Where are we on the support for different templating engines? Even if not baked right into it have we structured the code in such a way that expansion to more template formats is very configurable?
3. Where are we on the queuing part of things?
4. Have you worked on an internal PDF churner service which is to be used incase the user does not want to use Gotenburg as discussed with Chakshu during the last weekly review call?
5. How have we solved for errors in PDF generation like headers and footers getting cut? This problem was discussed during the standups itself when this service was being discussed.

[techsavvyash]

6. The photos are not getting rendered in the screenshot itself the screenshot field is broken -- shows that something is not correct and needs fixing.

[techsavvyash]

7. In the response pasted in your comment it says 500 in data and 201 in statusCode why is that?

[Savio629]

In the response pasted in your comment it says 500 in data and 201 in statusCode why is that?

I feel the api req is being created/sent successfully which is why the statusCode is 201 but the response from the server is 500 as it timed out.

The photos are not getting rendered in the screenshot itself the screenshot field is broken -- shows that something is not correct and needs fixing.

I haven't sent the path of the photos to the server. Can you suggest some ways to do so? As i'm doing api request and a single image file won't be feasible and api doesn't accept a folder so should we sent a zip folder with assets?

[Savio629]

Tried to implement https://svelte.dev/docs/svelte-compiler https://github.com/withastro/compiler but didn't received expected output Will try out this package out https://www.npmjs.com/package/svelte-to-html

[Savio629]

• What solution do you propose for solving the large data issue?

  • Still researching and planning about that. Was thinking about using queues.

• Where are we on the support for different templating engines? Even if not baked right into it have we structured the code in such a way that expansion to more template formats is very configurable?

  • Rightnow we support handlebars, trying to integrate more templating engines. Also have structured the code in such way that expansion to more template is configurable

• Where are we on the queuing part of things?

  • Still researching and planning about it. Can you explain a bit more on how should we proceed for queuing files?

• Have you worked on an internal PDF churner service which is to be used incase the user does not want to use Gotenburg as discussed with Chakshu during the last weekly review call?

  • We are not using Gotenburg at the moment as gotenburg requires the html to be named as index.html which won't be feasible for us. https://gotenberg.dev/docs/6.x/html // @shivankurchavan

• How have we solved for errors in PDF generation like headers and footers getting cut? This problem was discussed during the standups itself when this service was being discussed.

  • There are no errors in headers and footers at the moment.

  • The photos are not getting rendered in the screenshot itself the screenshot field is broken -- shows that something is not correct and needs fixing.

  • Fixed the issue in the latest commit

  • In the response pasted in your comment it says 500 in data and 201 in statusCode why is that?

  • We were sending the response with 500 instead forgot to throw an error there. Will look into it