4swap SDK go

4swap

4swap is a decentralized protocol implement for automated liquidity provision on Mixin Network

Install

go get github.com/fox-one/4swap-sdk-go/v2

Authorization

4swap supports two kinds of access tokens:

1. the access token that complete the OAuth flow at 4swap's webpage: https://app.4swap.org
2. the access token that generated by your own Mixn Application. The token should sign the URL /me and the scope should be "FULL". Please read this document for more details.

Example

func TestPreOrder(t *testing.T) {
    ctx := context.Background()

    c := New()
    c.UseToken("your auth token")
    
    pairs, err := c.ListPairs(ctx)
    if err != nil {
        t.Fatal(err)
    }
    
    req := &PreOrderReq{
        PayAssetID:  "4d8c508b-91c5-375b-92b0-ee702ed2dac5",
        FillAssetID: "31d2ea9c-95eb-3355-b65b-ba096853bc18",
        PayAmount:   decimal.NewFromFloat(0.1),
    }
    
    preOrder, err := PreOrderWithPairs(pairs, req)
    if err != nil {
        t.Fatal(err)
    }
    
    t.Logf("fill amount: %s", preOrder.FillAmount)
    
    followID := uuid.NewString()
    minAmount := preOrder.FillAmount.Mul(decimal.NewFromFloat(0.99)).Truncate(8)
    memo := BuildSwap(followID, req.FillAssetID, preOrder.Paths, minAmount)
    
    t.Logf("memo: %s", memo)
    
    group, err := c.ReadGroup(ctx)
    if err != nil {
        t.Fatal(err)
    }
    
    t.Logf("target mix address: %s", group.MixAddress)
    
    transfer := &mixin.TransferInput{
        AssetID:    req.PayAssetID,
        OpponentID: group.MixAddress,
        Amount:     req.PayAmount,
        TraceID:    followID,
        Memo:       memo,
    }
    
    t.Log(mixin.URL.SafePay(transfer))
    
    // transfer pay asset to mix address
    
    // view order detail
    order, err := c.ReadOrder(ctx, followID)
    if err != nil {
        assert.True(t, IsErrorCode(err, 401))
    } else {
        t.Logf("order state: %s", order.State)
    }
}