Fusion and Limit Order updated to latest versions (#101)

Author: Tanz0rz

CHANGELOG.md

@@ -4,6 +4,16 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html) starting with the *v1.0.0-beta.1* release.
 
+## [v2.0.0-preview] - 2025-1-22
+[v2.0.0-preview release page](https://github.com/1inch/1inch-sdk-go/releases/tag/v2.0.0-preview)
+
+### Breaking Changes
+- a new `surplus=true` query parameter must be added to Fusion quote requests
+
+### Changed
+- Fusion implementation updated to support new Fusion backend
+- Fusion+ is disabled until refactor is complete
+
 ## [v1.0.0-beta.3] - 2025-1-22
 [v1.0.0-beta.3 release page](https://github.com/1inch/1inch-sdk-go/releases/tag/v1.0.0-beta.3)
 ### Changed

MIGRATIONS.md

@@ -17,11 +17,11 @@ Jump To:
 ## Supported APIs
 
 ### Token Swaps
-*Swap API* - [[Docs](https://portal.1inch.dev/documentation/apis/swap/classic-swap/introduction) | [SDK Example](https://github.com/1inch/1inch-sdk-go/blob/main/sdk-clients/aggregation/examples/quote/main.go)]
+*Classic Swap API* - [[Docs](https://portal.1inch.dev/documentation/apis/swap/classic-swap/introduction) | [SDK Example](https://github.com/1inch/1inch-sdk-go/blob/main/sdk-clients/aggregation/examples/quote/main.go)]
 
-*Fusion API* - [[Docs](https://portal.1inch.dev/documentation/apis/swap/intent-swap/introduction) | [SDK Example](https://github.com/1inch/1inch-sdk-go/blob/main/sdk-clients/fusion/examples/place_order/main.go)] (now called Intent Swap)
+*Intent-based Swap (Fusion) API* - [[Docs](https://portal.1inch.dev/documentation/apis/swap/intent-swap/introduction) | [SDK Example](https://github.com/1inch/1inch-sdk-go/blob/main/sdk-clients/fusion/examples/place_order/main.go)]
 
-*Fusion Plus API* - [[Docs](https://portal.1inch.dev/documentation/apis/swap/fusion-plus/introduction) | [SDK Example](https://github.com/1inch/1inch-sdk-go/blob/main/sdk-clients/fusionplus/examples/place_order/main.go)]
+*Cross-chain Swap (Fusion+) API* - [[Docs](https://portal.1inch.dev/documentation/apis/swap/fusion-plus/introduction) | [SDK Example](https://github.com/1inch/1inch-sdk-go/blob/main/sdk-clients/fusionplus/examples/place_order/main.go)]
 
 *Orderbook API* - [[Docs](https://portal.1inch.dev/documentation/apis/orderbook/introduction) | [SDK Example](https://github.com/1inch/1inch-sdk-go/blob/main/sdk-clients/orderbook/examples/create_order/main.go)]
 
@@ -147,4 +147,4 @@ an [issue](https://github.com/1inch/1inch-sdk/issues) here on GitHub
 ## Development
 
 Please see our [SDK Developer Guide](https://github.com/1inch/1inch-sdk-go/blob/main/DEVELOPMENT.md) if you would
-like to contribute 
+like to contribute 

README.md

@@ -0,0 +1,3 @@
+package addresses
+
+const ZeroAddress string = "0x0000000000000000000000000000000000000000"

internal/addresses/addresses.go

@@ -5,6 +5,9 @@ import (
 	"math/big"
 )
 
+var Base1E5 = big.NewInt(100000)
+var Base1E2 = big.NewInt(100)
+
 func FromString(s string) (*big.Int, error) {
 	bigInt, ok := new(big.Int).SetString(s, 10) // base 10 for decimal
 	if !ok {

internal/bigint/bigint.go

@@ -16,6 +16,19 @@ func New() *BytesBuilder {
 	return &BytesBuilder{data: []byte{}}
 }
 
+func (b *BytesBuilder) AddUint256(val *big.Int) {
+	bytes := val.Bytes()
+	if len(bytes) < 32 {
+		// Pad on the left (big-endian) to 32 bytes
+		padded := make([]byte, 32-len(bytes))
+		bytes = append(padded, bytes...)
+	} else if len(bytes) > 32 {
+		// Truncate to last 32 bytes if larger (high bits ignored)
+		bytes = bytes[len(bytes)-32:]
+	}
+	b.data = append(b.data, bytes...)
+}
+
 func (b *BytesBuilder) AddUint24(val *big.Int) {
 	bytes := val.Bytes()
 	switch {

internal/bytesbuilder/bytesbuilder.go

@@ -0,0 +1,16 @@
+package times
+
+import "time"
+
+var Now func() int64 = NowImpl
+
+func NowImpl() int64 {
+	return time.Now().Unix()
+}
+
+var CalculateAuctionStartTime func(uint32, uint32) uint32 = CalculateAuctionStartTimeImpl
+
+func CalculateAuctionStartTimeImpl(startAuctionIn uint32, additionalWaitPeriod uint32) uint32 {
+	currentTime := time.Now().Unix()
+	return uint32(currentTime) + additionalWaitPeriod + startAuctionIn
+}

internal/times/time.go

@@ -5,7 +5,6 @@ import (
 	"math/big"
 	"regexp"
 	"strings"
-	"time"
 
 	"github.com/1inch/1inch-sdk-go/constants"
 	"github.com/1inch/1inch-sdk-go/internal/bigint"
@@ -460,21 +459,6 @@ func CheckPermitHash(parameter interface{}, variableName string) error {
 	return nil
 }
 
-func CheckExpireAfterUnix(parameter interface{}, variableName string) error {
-	value, ok := parameter.(int64)
-	if !ok {
-		return fmt.Errorf("for parameter '%v' to be validated as '%v', it must be a string", variableName, "ExpireAfterUnix")
-	}
-	if value == 0 {
-		return nil
-	}
-
-	if value < time.Now().Unix() {
-		return NewParameterValidationError(variableName, "must be a future timestamp")
-	}
-	return nil
-}
-
 func CheckFiatCurrency(parameter interface{}, variableName string) error {
 	value, ok := parameter.(string)
 	if !ok {

internal/validate/integration_check_cleanup_test.go

@@ -955,39 +955,6 @@ func TestCheckPermitHash(t *testing.T) {
 	}
 }
 
-func TestExpireAfter(t *testing.T) {
-	testcases := []struct {
-		description string
-		value       int64
-		expectError bool
-	}{
-		{
-			description: "Valid timestamp - empty",
-			value:       0,
-		},
-		{
-			description: "Valid timestamp - year 2030",
-			value:       1897205247,
-		},
-		{
-			description: "Invalid timestamp - past",
-			value:       1707791247,
-			expectError: true,
-		},
-	}
-
-	for _, tc := range testcases {
-		t.Run(tc.description, func(t *testing.T) {
-			err := CheckExpireAfterUnix(tc.value, "testValue")
-			if tc.expectError {
-				require.Error(t, err, fmt.Sprintf("%s should have caused an error", tc.description))
-			} else {
-				require.NoError(t, err, fmt.Sprintf("%s should not have caused an error", tc.description))
-			}
-		})
-	}
-}
-
 func TestIsBigInt(t *testing.T) {
 	testCases := []struct {
 		description string