/**
 * 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,
  fixDecoderSize,
  fixEncoderSize,
  getBytesDecoder,
  getBytesEncoder,
  getStructDecoder,
  getStructEncoder,
  getU64Decoder,
  getU64Encoder,
  transformEncoder,
  type AccountMeta,
  type AccountSignerMeta,
  type Address,
  type FixedSizeCodec,
  type FixedSizeDecoder,
  type FixedSizeEncoder,
  type Instruction,
  type InstructionWithAccounts,
  type InstructionWithData,
  type ReadonlyAccount,
  type ReadonlySignerAccount,
  type ReadonlyUint8Array,
  type TransactionSigner,
  type WritableAccount,
} from "@solana/kit";
import { FARMS_PROGRAM_ADDRESS } from "../programs";
import { getAccountMetaFactory, type ResolvedAccount } from "../shared";

export const STAKE_DISCRIMINATOR = new Uint8Array([
  206, 176, 202, 18, 200, 209, 179, 108,
]);

export function getStakeDiscriminatorBytes() {
  return fixEncoderSize(getBytesEncoder(), 8).encode(STAKE_DISCRIMINATOR);
}

export type StakeInstruction<
  TProgram extends string = typeof FARMS_PROGRAM_ADDRESS,
  TAccountOwner extends string | AccountMeta<string> = string,
  TAccountUserState extends string | AccountMeta<string> = string,
  TAccountFarmState extends string | AccountMeta<string> = string,
  TAccountFarmVault extends string | AccountMeta<string> = string,
  TAccountUserAta extends string | AccountMeta<string> = string,
  TAccountTokenMint extends string | AccountMeta<string> = string,
  TAccountScopePrices extends string | AccountMeta<string> = string,
  TAccountTokenProgram extends string | AccountMeta<string> =
    "TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA",
  TRemainingAccounts extends readonly AccountMeta<string>[] = [],
> = Instruction<TProgram> &
  InstructionWithData<ReadonlyUint8Array> &
  InstructionWithAccounts<
    [
      TAccountOwner extends string
        ? ReadonlySignerAccount<TAccountOwner> &
            AccountSignerMeta<TAccountOwner>
        : TAccountOwner,
      TAccountUserState extends string
        ? WritableAccount<TAccountUserState>
        : TAccountUserState,
      TAccountFarmState extends string
        ? WritableAccount<TAccountFarmState>
        : TAccountFarmState,
      TAccountFarmVault extends string
        ? WritableAccount<TAccountFarmVault>
        : TAccountFarmVault,
      TAccountUserAta extends string
        ? WritableAccount<TAccountUserAta>
        : TAccountUserAta,
      TAccountTokenMint extends string
        ? ReadonlyAccount<TAccountTokenMint>
        : TAccountTokenMint,
      TAccountScopePrices extends string
        ? ReadonlyAccount<TAccountScopePrices>
        : TAccountScopePrices,
      TAccountTokenProgram extends string
        ? ReadonlyAccount<TAccountTokenProgram>
        : TAccountTokenProgram,
      ...TRemainingAccounts,
    ]
  >;

export type StakeInstructionData = {
  discriminator: ReadonlyUint8Array;
  amount: bigint;
};

export type StakeInstructionDataArgs = { amount: number | bigint };

export function getStakeInstructionDataEncoder(): FixedSizeEncoder<StakeInstructionDataArgs> {
  return transformEncoder(
    getStructEncoder([
      ["discriminator", fixEncoderSize(getBytesEncoder(), 8)],
      ["amount", getU64Encoder()],
    ]),
    (value) => ({ ...value, discriminator: STAKE_DISCRIMINATOR }),
  );
}

export function getStakeInstructionDataDecoder(): FixedSizeDecoder<StakeInstructionData> {
  return getStructDecoder([
    ["discriminator", fixDecoderSize(getBytesDecoder(), 8)],
    ["amount", getU64Decoder()],
  ]);
}

export function getStakeInstructionDataCodec(): FixedSizeCodec<
  StakeInstructionDataArgs,
  StakeInstructionData
> {
  return combineCodec(
    getStakeInstructionDataEncoder(),
    getStakeInstructionDataDecoder(),
  );
}

export type StakeInput<
  TAccountOwner extends string = string,
  TAccountUserState extends string = string,
  TAccountFarmState extends string = string,
  TAccountFarmVault extends string = string,
  TAccountUserAta extends string = string,
  TAccountTokenMint extends string = string,
  TAccountScopePrices extends string = string,
  TAccountTokenProgram extends string = string,
> = {
  owner: TransactionSigner<TAccountOwner>;
  userState: Address<TAccountUserState>;
  farmState: Address<TAccountFarmState>;
  farmVault: Address<TAccountFarmVault>;
  userAta: Address<TAccountUserAta>;
  tokenMint: Address<TAccountTokenMint>;
  scopePrices?: Address<TAccountScopePrices>;
  tokenProgram?: Address<TAccountTokenProgram>;
  amount: StakeInstructionDataArgs["amount"];
};

export function getStakeInstruction<
  TAccountOwner extends string,
  TAccountUserState extends string,
  TAccountFarmState extends string,
  TAccountFarmVault extends string,
  TAccountUserAta extends string,
  TAccountTokenMint extends string,
  TAccountScopePrices extends string,
  TAccountTokenProgram extends string,
  TProgramAddress extends Address = typeof FARMS_PROGRAM_ADDRESS,
>(
  input: StakeInput<
    TAccountOwner,
    TAccountUserState,
    TAccountFarmState,
    TAccountFarmVault,
    TAccountUserAta,
    TAccountTokenMint,
    TAccountScopePrices,
    TAccountTokenProgram
  >,
  config?: { programAddress?: TProgramAddress },
): StakeInstruction<
  TProgramAddress,
  TAccountOwner,
  TAccountUserState,
  TAccountFarmState,
  TAccountFarmVault,
  TAccountUserAta,
  TAccountTokenMint,
  TAccountScopePrices,
  TAccountTokenProgram
> {
  // Program address.
  const programAddress = config?.programAddress ?? FARMS_PROGRAM_ADDRESS;

  // Original accounts.
  const originalAccounts = {
    owner: { value: input.owner ?? null, isWritable: false },
    userState: { value: input.userState ?? null, isWritable: true },
    farmState: { value: input.farmState ?? null, isWritable: true },
    farmVault: { value: input.farmVault ?? null, isWritable: true },
    userAta: { value: input.userAta ?? null, isWritable: true },
    tokenMint: { value: input.tokenMint ?? null, isWritable: false },
    scopePrices: { value: input.scopePrices ?? null, isWritable: false },
    tokenProgram: { value: input.tokenProgram ?? null, isWritable: false },
  };
  const accounts = originalAccounts as Record<
    keyof typeof originalAccounts,
    ResolvedAccount
  >;

  // Original args.
  const args = { ...input };

  // Resolve default values.
  if (!accounts.tokenProgram.value) {
    accounts.tokenProgram.value =
      "TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA" as Address<"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA">;
  }

  const getAccountMeta = getAccountMetaFactory(programAddress, "programId");
  return Object.freeze({
    accounts: [
      getAccountMeta(accounts.owner),
      getAccountMeta(accounts.userState),
      getAccountMeta(accounts.farmState),
      getAccountMeta(accounts.farmVault),
      getAccountMeta(accounts.userAta),
      getAccountMeta(accounts.tokenMint),
      getAccountMeta(accounts.scopePrices),
      getAccountMeta(accounts.tokenProgram),
    ],
    data: getStakeInstructionDataEncoder().encode(
      args as StakeInstructionDataArgs,
    ),
    programAddress,
  } as StakeInstruction<
    TProgramAddress,
    TAccountOwner,
    TAccountUserState,
    TAccountFarmState,
    TAccountFarmVault,
    TAccountUserAta,
    TAccountTokenMint,
    TAccountScopePrices,
    TAccountTokenProgram
  >);
}

export type ParsedStakeInstruction<
  TProgram extends string = typeof FARMS_PROGRAM_ADDRESS,
  TAccountMetas extends readonly AccountMeta[] = readonly AccountMeta[],
> = {
  programAddress: Address<TProgram>;
  accounts: {
    owner: TAccountMetas[0];
    userState: TAccountMetas[1];
    farmState: TAccountMetas[2];
    farmVault: TAccountMetas[3];
    userAta: TAccountMetas[4];
    tokenMint: TAccountMetas[5];
    scopePrices?: TAccountMetas[6] | undefined;
    tokenProgram: TAccountMetas[7];
  };
  data: StakeInstructionData;
};

export function parseStakeInstruction<
  TProgram extends string,
  TAccountMetas extends readonly AccountMeta[],
>(
  instruction: Instruction<TProgram> &
    InstructionWithAccounts<TAccountMetas> &
    InstructionWithData<ReadonlyUint8Array>,
): ParsedStakeInstruction<TProgram, TAccountMetas> {
  if (instruction.accounts.length < 8) {
    // TODO: Coded error.
    throw new Error("Not enough accounts");
  }
  let accountIndex = 0;
  const getNextAccount = () => {
    const accountMeta = (instruction.accounts as TAccountMetas)[accountIndex]!;
    accountIndex += 1;
    return accountMeta;
  };
  const getNextOptionalAccount = () => {
    const accountMeta = getNextAccount();
    return accountMeta.address === FARMS_PROGRAM_ADDRESS
      ? undefined
      : accountMeta;
  };
  return {
    programAddress: instruction.programAddress,
    accounts: {
      owner: getNextAccount(),
      userState: getNextAccount(),
      farmState: getNextAccount(),
      farmVault: getNextAccount(),
      userAta: getNextAccount(),
      tokenMint: getNextAccount(),
      scopePrices: getNextOptionalAccount(),
      tokenProgram: getNextAccount(),
    },
    data: getStakeInstructionDataDecoder().decode(instruction.data),
  };
}