Social operations context helper functions

[gabehamilton]

The problem

Indexer functions would be easier to read if there were helper functions to extract common data.

Near-primitives solution

Full Example Indexer

block.socialOperations('index')
  .map(({accountId,data}) => {
    const like = data.like ? JSON.parse(data.like) : null;
    if(like) {
      const likedAccount = like.path.split('/')[0];  
      context.db.LikesByAccount.insert({
          account_id: accountId,
          liked_account: likedAccount,
      });
    }
  });

Original

Proposed Solution

Add the following context methods:

• base64Decode
  Every indexer currently defines it (though with a lower case d).
• getFunctionCalls(contract, method)
• getSocialOperations(operation)

Decide whether to pass block in method signature.

Full Example Indexer

context.getSocialOperations('index').map(({accountId,data}) => {
  const like = data.like ? JSON.parse(data.like) : null;
  if(like) {
    const likedAccount = like.path.split('/')[0];  
    context.db.LikesByAccount.insert({
        account_id: accountId,
        liked_account: likedAccount,
    });
  }
});

Proposed code blocks

base64Decode(encodedValue)

    let buff = Buffer.from(encodedValue, "base64");
    return JSON.parse(buff.toString("utf-8"));

getFunctionCalls(contract, method)

block
    .actions()
    .filter((action) => action.receiverId === contract)
    .flatMap((action) =>
      action.operations
        .map(({FunctionCall}) => FunctionCall)
        .filter((operation) => operation?.methodName === method)
 .map((functionCallOperation) => ({
          ...functionCallOperation,
          args: base64Decode(functionCallOperation.args),
        }))

getSocialOperations(operation)

const contract = "social.near";
const method = "set";
getFunctionCalls(contract, method)
.filter((functionCall) => {
        const accountId = Object.keys(functionCall.args.data)[0];
        return functionCall.args.data[accountId][operation];
})
.map((functionCall) => {
  const accountId = Object.keys(functionCall.args.data)[0];
  return {
              accountId,
              data: functionCall.args.data[accountId][operation],
  }
);

Test Indexer

[pkudinov]

This does look like a bunch of methods to add to near lake primitives, correct?

[gabehamilton]

Yes, that would make the most sense. Maybe we can add them there and since they won't make the 0.1.1 version we're upgrading to soon, also patch block with them in this repo?