package helpers

import (
	"encoding/binary"
	"ripple/commands"
	"ripple/types"
)

func BuildFindPath(paymentID [32]byte, amount uint64, inOrOut byte, bandwidth uint64, penaltyRate uint32, fee uint64, hops byte, tax uint64) types.Instruction {
	buf := make([]byte, 70)
	copy(buf[:32], paymentID[:])
	binary.BigEndian.PutUint64(buf[32:40], amount)
	buf[40] = inOrOut
	binary.BigEndian.PutUint64(buf[41:49], bandwidth)
	binary.BigEndian.PutUint32(buf[49:53], penaltyRate)
	binary.BigEndian.PutUint64(buf[53:61], fee)
	buf[61] = hops
	binary.BigEndian.PutUint64(buf[62:70], tax)
	return types.Instruction{
		Command:   commands.ACCOUNT_FIND_PATH,
		Arguments: buf,
	}
}

func BuildPathRecurse(paymentID [32]byte, depth byte) types.Instruction {
	buf := make([]byte, 33)
	copy(buf[:32], paymentID[:])
	buf[32] = depth
	return types.Instruction{
		Command:   commands.ACCOUNT_PATH_RECURSE,
		Arguments: buf,
	}
}

func BuildPathFound(paymentID [32]byte, hops byte) types.Instruction {
	buf := make([]byte, 33)
	copy(buf[:32], paymentID[:])
	buf[32] = hops
	return types.Instruction{
		Command:   commands.ACCOUNT_PATH_FOUND,
		Arguments: buf,
	}
}

func BuildPreparePath(paymentID [32]byte, creditorOut uint64) types.Instruction {
	buf := make([]byte, 40)
	copy(buf[:32], paymentID[:])
	binary.BigEndian.PutUint64(buf[32:40], creditorOut)
	return types.Instruction{
		Command:   commands.ACCOUNT_PREPARE_PATH,
		Arguments: buf,
	}
}

func BuildCommitPayment(paymentID [32]byte) types.Instruction {
	return types.Instruction{
		Command:   commands.ACCOUNT_COMMIT_PAYMENT,
		Arguments: paymentID[:],
	}
}

func BuildSealPayment(paymentID [32]byte) types.Instruction {
	return types.Instruction{
		Command:   commands.ACCOUNT_SEAL_PAYMENT,
		Arguments: paymentID[:],
	}
}

func BuildFinalizePayment(paymentID [32]byte, preimage [32]byte) types.Instruction {
	buf := make([]byte, 64)
	copy(buf[:32], paymentID[:])
	copy(buf[32:64], preimage[:])
	return types.Instruction{
		Command:   commands.ACCOUNT_FINALIZE_PAYMENT,
		Arguments: buf,
	}
}

func BuildAckFinalize(pid [32]byte) types.Instruction {
    return types.Instruction{
        Command:   commands.ACCOUNT_ACK_FINALIZE,
        Arguments: pid[:],
    }
}

func BuildCancelPayment(paymentID [32]byte, preimage [32]byte) types.Instruction {
	buf := make([]byte, 64)
	copy(buf[:32], paymentID[:])
	copy(buf[32:64], preimage[:])
	return types.Instruction{
		Command:   commands.ACCOUNT_CANCEL_PAYMENT,
		Arguments: buf,
	}
}

func BuildAckCancel(pid [32]byte) types.Instruction {
    return types.Instruction{
        Command:   commands.ACCOUNT_ACK_CANCEL,
        Arguments: pid[:],
    }
}

func BuildRollbackPayment(paymentID [32]byte) types.Instruction {
	return types.Instruction{
		Command:   commands.ACCOUNT_ROLLBACK_PAYMENT,
		Arguments: paymentID[:],
	}
}

func BuildCleanupPayment(paymentID [32]byte) types.Instruction {
	return types.Instruction{
		Command:   commands.ACCOUNT_CLEANUP_PAYMENT,
		Arguments: paymentID[:],
	}
}

func BuildSwarmRedistribution(tax uint64, width uint64) types.Instruction {
	buf := make([]byte, 16)
	binary.BigEndian.PutUint64(buf[0:8], tax)
	binary.BigEndian.PutUint64(buf[8:16], width)
	return types.Instruction{
		Command:   commands.ACCOUNT_SWARM_REDISTRIBUTION,
		Arguments: buf,
	}
}