feat: supporting unlocked with withdrawal period (#6)

The underlying codebase requires the user to decide at lockup the Date
of withdrawal.
The intended behaviour, is that the user can decide to lock the tokens
in an "unlocked with withdrawal period" mode, in which it would require
the user to first "initiate the withdrawal", to be able to actually
withdraw the tokens (e.g.) 7 days later.

This is achieved by:
- reverting on withdrawal when locking Date is 0
- adding a new method, identical in arguments to "unlock", that would
revert if Date != 0
- when user calls this method, the locking Date should be `now() + 7
days`

.gitignore

@@ -7,4 +7,5 @@ js/lib
 
 /node_modules
 
-js/dist
+js/dist
+**/wallet.json

js/src/example.ts

@@ -20,32 +20,7 @@ const wallet = Keypair.fromSecretKey(
 );
 
 /** There are better way to generate an array of dates but be careful as it's irreversible */
-const DATES = [
-  new Date(2022, 12),
-  new Date(2023, 1),
-  new Date(2023, 2),
-  new Date(2023, 3),
-  new Date(2023, 4),
-  new Date(2023, 5),
-  new Date(2023, 6),
-  new Date(2023, 7),
-  new Date(2023, 8),
-  new Date(2023, 9),
-  new Date(2023, 10),
-  new Date(2023, 11),
-  new Date(2024, 12),
-  new Date(2024, 2),
-  new Date(2024, 3),
-  new Date(2024, 4),
-  new Date(2024, 5),
-  new Date(2024, 6),
-  new Date(2024, 7),
-  new Date(2024, 8),
-  new Date(2024, 9),
-  new Date(2024, 10),
-  new Date(2024, 11),
-  new Date(2024, 12),
-];
+const DATE = new Date(2022, 12);
 
 /** Info about the desintation */
 const DESTINATION_OWNER = new PublicKey('');
@@ -86,19 +61,14 @@ const checks = async () => {
 /** Function that locks the tokens */
 const lock = async () => {
   await checks();
-  const schedules: Schedule[] = [];
-  for (let date of DATES) {
-    schedules.push(
-      new Schedule(
-        /** Has to be in seconds */
-        // @ts-ignore
-        new Numberu64(date.getTime() / 1_000),
-        /** Don't forget to add decimals */
-        // @ts-ignore
-        new Numberu64(AMOUNT_PER_SCHEDULE * Math.pow(10, DECIMALS)),
-      ),
-    );
-  }
+  const schedule: Schedule = new Schedule(
+    /** Has to be in seconds */
+    // @ts-ignore
+    new Numberu64(DATE.getTime() / 1_000),
+    /** Don't forget to add decimals */
+    // @ts-ignore
+    new Numberu64(AMOUNT_PER_SCHEDULE * Math.pow(10, DECIMALS)),
+  );
   const seed = generateRandomSeed();
 
   console.log(`Seed: ${seed}`);
@@ -112,7 +82,7 @@ const lock = async () => {
     SOURCE_TOKEN_ACCOUNT,
     DESTINATION_TOKEN_ACCOUNT,
     MINT,
-    schedules,
+    schedule,
   );
 
   const tx = await signAndSendInstructions(connection, [], wallet, instruction);

js/src/instructions.ts

@@ -12,14 +12,11 @@ export function createInitInstruction(
   vestingProgramId: PublicKey,
   payerKey: PublicKey,
   vestingAccountKey: PublicKey,
-  seeds: Array<Buffer | Uint8Array>,
-  numberOfSchedules: number,
+  seeds: Array<Buffer | Uint8Array>
 ): TransactionInstruction {
   let buffers = [
     Buffer.from(Int8Array.from([0]).buffer),
     Buffer.concat(seeds),
-    // @ts-ignore
-    new Numberu32(numberOfSchedules).toBuffer(),
   ];
 
   const data = Buffer.concat(buffers);
@@ -62,7 +59,7 @@ export function createCreateInstruction(
   sourceTokenAccountKey: PublicKey,
   destinationTokenAccountKey: PublicKey,
   mintAddress: PublicKey,
-  schedules: Array<Schedule>,
+  schedule: Schedule,
   seeds: Array<Buffer | Uint8Array>,
 ): TransactionInstruction {
   let buffers = [
@@ -72,9 +69,7 @@ export function createCreateInstruction(
     destinationTokenAccountKey.toBuffer(),
   ];
 
-  schedules.forEach(s => {
-    buffers.push(s.toBuffer());
-  });
+  buffers.push(schedule.toBuffer());
 
   const data = Buffer.concat(buffers);
   const keys = [
@@ -158,3 +153,51 @@ export function createUnlockInstruction(
     data,
   });
 }
+
+export function createInitializeUnlockInstruction(
+  vestingProgramId: PublicKey,
+  tokenProgramId: PublicKey,
+  clockSysvarId: PublicKey,
+  vestingAccountKey: PublicKey,
+  vestingTokenAccountKey: PublicKey,
+  destinationTokenAccountKey: PublicKey,
+  seeds: Array<Buffer | Uint8Array>,
+): TransactionInstruction {
+  const data = Buffer.concat([
+    Buffer.from(Int8Array.from([3]).buffer),
+    Buffer.concat(seeds),
+  ]);
+
+  const keys = [
+    {
+      pubkey: tokenProgramId,
+      isSigner: false,
+      isWritable: false,
+    },
+    {
+      pubkey: clockSysvarId,
+      isSigner: false,
+      isWritable: false,
+    },
+    {
+      pubkey: vestingAccountKey,
+      isSigner: false,
+      isWritable: true,
+    },
+    {
+      pubkey: vestingTokenAccountKey,
+      isSigner: false,
+      isWritable: true,
+    },
+    {
+      pubkey: destinationTokenAccountKey,
+      isSigner: false,
+      isWritable: true,
+    },
+  ];
+  return new TransactionInstruction({
+    keys,
+    programId: vestingProgramId,
+    data,
+  });
+}

js/src/main.ts

@@ -14,6 +14,7 @@ import {
   createCreateInstruction,
   createInitInstruction,
   createUnlockInstruction,
+  createInitializeUnlockInstruction,
 } from './instructions';
 import { ContractInfo, Schedule } from './state';
 import { assert } from 'console';
@@ -36,7 +37,7 @@ export const TOKEN_VESTING_PROGRAM_ID = new PublicKey(
  * @param possibleSourceTokenPubkey The source token account (i.e where locked tokens are originating from), if null it defaults to the ATA
  * @param destinationTokenPubkey The destination token account i.e where unlocked tokens will be transfered
  * @param mintAddress The mint of the tokens being vested
- * @param schedules The array of vesting schedules
+ * @param schedule The vesting schedule
  * @returns An array of `TransactionInstruction`
  */
 export async function create(
@@ -48,7 +49,7 @@ export async function create(
   possibleSourceTokenPubkey: PublicKey | null,
   destinationTokenPubkey: PublicKey,
   mintAddress: PublicKey,
-  schedules: Array<Schedule>,
+  schedule: Schedule,
 ): Promise<Array<TransactionInstruction>> {
   // If no source token account was given, use the associated source account
   if (possibleSourceTokenPubkey == null) {
@@ -92,8 +93,7 @@ export async function create(
       programId,
       payer,
       vestingAccountKey,
-      [seedWord],
-      schedules.length,
+      [seedWord]
     ),
     createAssociatedTokenAccountInstruction(
       payer,
@@ -110,7 +110,7 @@ export async function create(
       possibleSourceTokenPubkey,
       destinationTokenPubkey,
       mintAddress,
-      schedules,
+      schedule,
       [seedWord],
     ),
   ];
@@ -161,6 +161,50 @@ export async function unlock(
   return instruction;
 }
 
+/**
+ * This function can be used to initialize the unlock of vested tokens
+ * @param connection The Solana RPC connection object
+ * @param programId The token vesting program ID
+ * @param seedWord Seed words used to derive the vesting account
+ * @param mintAddress The mint of the vested tokens
+ * @returns An array of `TransactionInstruction`
+ */
+export async function initializeUnlock(
+  connection: Connection,
+  programId: PublicKey,
+  seedWord: Buffer | Uint8Array,
+  mintAddress: PublicKey,
+): Promise<Array<TransactionInstruction>> {
+  seedWord = seedWord.slice(0, 31);
+  const [vestingAccountKey, bump] = await PublicKey.findProgramAddress(
+    [seedWord],
+    programId,
+  );
+  seedWord = Buffer.from(seedWord.toString('hex') + bump.toString(16), 'hex');
+
+  const vestingTokenAccountKey = await getAssociatedTokenAddress(
+    mintAddress,
+    vestingAccountKey,
+    true,
+  );
+
+  const vestingInfo = await getContractInfo(connection, vestingAccountKey);
+
+  let instruction = [
+    createInitializeUnlockInstruction(
+      programId,
+      TOKEN_PROGRAM_ID,
+      SYSVAR_CLOCK_PUBKEY,
+      vestingAccountKey,
+      vestingTokenAccountKey,
+      vestingInfo.destinationAddress,
+      [seedWord],
+    ),
+  ];
+
+  return instruction;
+}
+
 /**
  * This function can be used retrieve information about a vesting account
  * @param connection The Solana RPC connection object

program/Cargo.toml

@@ -28,8 +28,9 @@ arbitrary = { version = "0.4", features = ["derive"], optional = true }
 honggfuzz = { version = "0.5", optional = true }
 
 [dev-dependencies]
-solana-sdk = "1.5.6"
-solana-program-test = "1.5.6"
+solana-sdk = "1.18.23"
+solana-program-test = "1.18.23"
+solana-test-framework = { git = "https://github.com/halbornteam/solana-test-framework", branch = "solana1.18" }
 tokio = { version = "1.0", features = ["macros"]}
 
 [lib]