Feat: Add unmasked `phone_number` to decoded certificate

[bharatkashyap]

Adding decentralized ID to Digital Saathi certificate

• The goal is for verifiers/third parties to be able to obtain the phone number from the certificate upon decoding

Implementation

• We will need to add additional middleware to the current /certificate handler
• From the tracking key, we need to make a graphQL API call to the database and obtain the unmasked phone number on the server through the HASURA_ADMIN_SECRET
• We need to add the obtained phone_number to the /certificate request
• The phone_number will be added to the verifiable credential being generated here

[Abhay-86]

@bharatkashyap hello bhaiya i have added middleware fuction in certificate.js which i think is working fine but could you please guide me to find that weather i would find the tracking id?

[bharatkashyap]

Hey @Abhay-86! We need to make an API call to the Hasura GraphQL endpoint with a query to read the mobile number associated with the tracking key.