Session Key Manager module implementation

[AmanRaj1608]

SessionKeyManagerModule implementation

User flow to add a session key

const biconomyAccount = new BiconomySmartAccount();
const biconomySessionManager = await SessionKeyManagerModule.create();

const sessionKeyData = await createSessionData({
  validUntil: 0,
  validAfter: 0,
  sessionValidationModuleAddress: "0xeeee address of module (eg: erc20)",
  sessionKeyData: "0xabc data",
});

const tx = {
  to: await biconomyAccount.address,
  data: sessionKeyData,
  value: 0,
}

const partialUserOp = await biconomySmartAccount.buildUserOp([tx]);
const userOpResponse = await biconomySmartAccount.sendUserOp(partialUserOp);

// after success tx set the sessionKey in the session manager
if(userOpResponse.status === "success") {
  await biconomySessionManager.setSessionKey(sessionKey);  
}

User flow to do a transaction with session key

const biconomyAccount = new BiconomySmartAccount();
const biconomySessionManager = await SessionKeyManagerModule.create();

const tx = {
  to: "0xabc",
  data: "0x",
  value: 0.1,
}

// Not sure what is the process here cc: @livingrockrises @tomarsachin2271 
// - does the SDK calls the signUserOp with the session key?
// - or the user calls the signUserOp with the session key?

const partialUserOp = await biconomySmartAccount.buildUserOp([tx]);
const sig = await biconomySessionManager.signUserOp(partialUserOp, sessionSigner);
partialUserOp.signature = sig;

const userOpResponse = await biconomySmartAccount.sendUserOp(partialUserOp);

[linear]

SMA-61 Session Key Manager Module implementation

Implement the SessionKeyManagerModule with

• create → static constructor
• createSessionData → generates the sessionData
• signUserOp → signs the userOp from sessionEOA

[livingrockrises]

left some comments

[tomarsachin2271]

Exclude the sessions whose validUltil date has passed or status is EXPIRED.

[AmanRaj1608]

I believe the merkle tree will still have the data its just it will be validate on chain? It should have all the data as per the discussion we had today

[tomarsachin2271]

Yeah as per the discussion, all the pending state sessions should be part of the merkle tree. Even though this recommended change doesn't affect the functionality in any way but it's just optimised way of doing things, where we can get rid of expired session leafs.
Coz over time the leaves will keep on getting added and there's a limit of data that can be stored in local storage.

Not critical but we can add a TODO here to handle this later may be.