Define IDL instructions for metadata pointer extension (#16)

* Add instructions

* Add tests

clients/js/src/generated/instructions/index.ts

@@ -37,6 +37,7 @@ export * from './initializeAccount3';
 export * from './initializeConfidentialTransferMint';
 export * from './initializeDefaultAccountState';
 export * from './initializeImmutableOwner';
+export * from './initializeMetadataPointer';
 export * from './initializeMint';
 export * from './initializeMint2';
 export * from './initializeMintCloseAuthority';
@@ -58,5 +59,6 @@ export * from './transferCheckedWithFee';
 export * from './uiAmountToAmount';
 export * from './updateConfidentialTransferMint';
 export * from './updateDefaultAccountState';
+export * from './updateMetadataPointer';
 export * from './withdrawWithheldTokensFromAccounts';
 export * from './withdrawWithheldTokensFromMint';

clients/js/src/generated/instructions/initializeMetadataPointer.ts

@@ -0,0 +1,222 @@
+/**
+ * This code was AUTOGENERATED using the codama library.
+ * Please DO NOT EDIT THIS FILE, instead use visitors
+ * to add features, then rerun codama to update it.
+ *
+ * @see https://github.com/codama-idl/codama
+ */
+
+import {
+  combineCodec,
+  getAddressDecoder,
+  getAddressEncoder,
+  getOptionDecoder,
+  getOptionEncoder,
+  getStructDecoder,
+  getStructEncoder,
+  getU8Decoder,
+  getU8Encoder,
+  transformEncoder,
+  type Address,
+  type Codec,
+  type Decoder,
+  type Encoder,
+  type IAccountMeta,
+  type IInstruction,
+  type IInstructionWithAccounts,
+  type IInstructionWithData,
+  type Option,
+  type OptionOrNullable,
+  type WritableAccount,
+} from '@solana/web3.js';
+import { TOKEN_2022_PROGRAM_ADDRESS } from '../programs';
+import { getAccountMetaFactory, type ResolvedAccount } from '../shared';
+
+export const INITIALIZE_METADATA_POINTER_DISCRIMINATOR = 39;
+
+export function getInitializeMetadataPointerDiscriminatorBytes() {
+  return getU8Encoder().encode(INITIALIZE_METADATA_POINTER_DISCRIMINATOR);
+}
+
+export const INITIALIZE_METADATA_POINTER_METADATA_POINTER_DISCRIMINATOR = 0;
+
+export function getInitializeMetadataPointerMetadataPointerDiscriminatorBytes() {
+  return getU8Encoder().encode(
+    INITIALIZE_METADATA_POINTER_METADATA_POINTER_DISCRIMINATOR
+  );
+}
+
+export type InitializeMetadataPointerInstruction<
+  TProgram extends string = typeof TOKEN_2022_PROGRAM_ADDRESS,
+  TAccountMint extends string | IAccountMeta<string> = string,
+  TRemainingAccounts extends readonly IAccountMeta<string>[] = [],
+> = IInstruction<TProgram> &
+  IInstructionWithData<Uint8Array> &
+  IInstructionWithAccounts<
+    [
+      TAccountMint extends string
+        ? WritableAccount<TAccountMint>
+        : TAccountMint,
+      ...TRemainingAccounts,
+    ]
+  >;
+
+export type InitializeMetadataPointerInstructionData = {
+  discriminator: number;
+  metadataPointerDiscriminator: number;
+  /** The public key for the account that can update the metadata address. */
+  authority: Option<Address>;
+  /** The account address that holds the metadata. */
+  metadataAddress: Option<Address>;
+};
+
+export type InitializeMetadataPointerInstructionDataArgs = {
+  /** The public key for the account that can update the metadata address. */
+  authority: OptionOrNullable<Address>;
+  /** The account address that holds the metadata. */
+  metadataAddress: OptionOrNullable<Address>;
+};
+
+export function getInitializeMetadataPointerInstructionDataEncoder(): Encoder<InitializeMetadataPointerInstructionDataArgs> {
+  return transformEncoder(
+    getStructEncoder([
+      ['discriminator', getU8Encoder()],
+      ['metadataPointerDiscriminator', getU8Encoder()],
+      [
+        'authority',
+        getOptionEncoder(getAddressEncoder(), {
+          prefix: null,
+          noneValue: 'zeroes',
+        }),
+      ],
+      [
+        'metadataAddress',
+        getOptionEncoder(getAddressEncoder(), {
+          prefix: null,
+          noneValue: 'zeroes',
+        }),
+      ],
+    ]),
+    (value) => ({
+      ...value,
+      discriminator: INITIALIZE_METADATA_POINTER_DISCRIMINATOR,
+      metadataPointerDiscriminator:
+        INITIALIZE_METADATA_POINTER_METADATA_POINTER_DISCRIMINATOR,
+    })
+  );
+}
+
+export function getInitializeMetadataPointerInstructionDataDecoder(): Decoder<InitializeMetadataPointerInstructionData> {
+  return getStructDecoder([
+    ['discriminator', getU8Decoder()],
+    ['metadataPointerDiscriminator', getU8Decoder()],
+    [
+      'authority',
+      getOptionDecoder(getAddressDecoder(), {
+        prefix: null,
+        noneValue: 'zeroes',
+      }),
+    ],
+    [
+      'metadataAddress',
+      getOptionDecoder(getAddressDecoder(), {
+        prefix: null,
+        noneValue: 'zeroes',
+      }),
+    ],
+  ]);
+}
+
+export function getInitializeMetadataPointerInstructionDataCodec(): Codec<
+  InitializeMetadataPointerInstructionDataArgs,
+  InitializeMetadataPointerInstructionData
+> {
+  return combineCodec(
+    getInitializeMetadataPointerInstructionDataEncoder(),
+    getInitializeMetadataPointerInstructionDataDecoder()
+  );
+}
+
+export type InitializeMetadataPointerInput<
+  TAccountMint extends string = string,
+> = {
+  /** The mint to initialize. */
+  mint: Address<TAccountMint>;
+  authority: InitializeMetadataPointerInstructionDataArgs['authority'];
+  metadataAddress: InitializeMetadataPointerInstructionDataArgs['metadataAddress'];
+};
+
+export function getInitializeMetadataPointerInstruction<
+  TAccountMint extends string,
+  TProgramAddress extends Address = typeof TOKEN_2022_PROGRAM_ADDRESS,
+>(
+  input: InitializeMetadataPointerInput<TAccountMint>,
+  config?: { programAddress?: TProgramAddress }
+): InitializeMetadataPointerInstruction<TProgramAddress, TAccountMint> {
+  // Program address.
+  const programAddress = config?.programAddress ?? TOKEN_2022_PROGRAM_ADDRESS;
+
+  // Original accounts.
+  const originalAccounts = {
+    mint: { value: input.mint ?? null, isWritable: true },
+  };
+  const accounts = originalAccounts as Record<
+    keyof typeof originalAccounts,
+    ResolvedAccount
+  >;
+
+  // Original args.
+  const args = { ...input };
+
+  const getAccountMeta = getAccountMetaFactory(programAddress, 'programId');
+  const instruction = {
+    accounts: [getAccountMeta(accounts.mint)],
+    programAddress,
+    data: getInitializeMetadataPointerInstructionDataEncoder().encode(
+      args as InitializeMetadataPointerInstructionDataArgs
+    ),
+  } as InitializeMetadataPointerInstruction<TProgramAddress, TAccountMint>;
+
+  return instruction;
+}
+
+export type ParsedInitializeMetadataPointerInstruction<
+  TProgram extends string = typeof TOKEN_2022_PROGRAM_ADDRESS,
+  TAccountMetas extends readonly IAccountMeta[] = readonly IAccountMeta[],
+> = {
+  programAddress: Address<TProgram>;
+  accounts: {
+    /** The mint to initialize. */
+    mint: TAccountMetas[0];
+  };
+  data: InitializeMetadataPointerInstructionData;
+};
+
+export function parseInitializeMetadataPointerInstruction<
+  TProgram extends string,
+  TAccountMetas extends readonly IAccountMeta[],
+>(
+  instruction: IInstruction<TProgram> &
+    IInstructionWithAccounts<TAccountMetas> &
+    IInstructionWithData<Uint8Array>
+): ParsedInitializeMetadataPointerInstruction<TProgram, TAccountMetas> {
+  if (instruction.accounts.length < 1) {
+    // TODO: Coded error.
+    throw new Error('Not enough accounts');
+  }
+  let accountIndex = 0;
+  const getNextAccount = () => {
+    const accountMeta = instruction.accounts![accountIndex]!;
+    accountIndex += 1;
+    return accountMeta;
+  };
+  return {
+    programAddress: instruction.programAddress,
+    accounts: {
+      mint: getNextAccount(),
+    },
+    data: getInitializeMetadataPointerInstructionDataDecoder().decode(
+      instruction.data
+    ),
+  };
+}