package services

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

func (m *PaymentManager) ForwardFindPath(paymentID [32]byte) {
	pf, ok := m.st.Memory.GetPathfinding(paymentID)
	if !ok {
		return
	}

    var from types.UserIdentifier
    var amountPos int64
    var bandwidthFn func(types.UserIdentifier) int64
    if pf.Amount < 0 {
        from = pf.Incoming
        bandwidthFn = m.PreviewBandwidthOut
        amountPos = -pf.Amount
    } else {
        from = pf.Outgoing
        bandwidthFn = m.PreviewBandwidthIn
        amountPos = pf.Amount
    }

    buf := make([]byte, 61)
    copy(buf, paymentID[:])
    binary.BigEndian.PutUint64(buf[32:40], uint64(pf.Amount))
    binary.BigEndian.PutUint32(buf[40:44], pf.PenaltyRate)
    binary.BigEndian.PutUint64(buf[44:52], pf.Fee)
    buf[52] = pf.Hops
    binary.BigEndian.PutUint64(buf[53:61], pf.Tax)

    instr := types.Instruction{
        Command:   commands.ACCOUNT_FIND_PATH,
        Arguments: buf,
    }
    for id := range m.st.Storage.Accounts {
        if id == from {
            continue
        }
        bandwidth := bandwidthFn(id)
        if bandwidth >= amountPos {
            m.accSender.Send(id, instr)
        }
    }
}