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@@ -19,3 +19,5 @@ | |
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| # Go workspace file | ||
| go.work | ||
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| .env | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,84 @@ | ||
| package vwap | ||
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| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "fmt" | ||
| "log" | ||
| "net/http" | ||
| "time" | ||
| ) | ||
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| // temporary filtering func. should move to a router later. | ||
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| type SwapToken struct { | ||
| Symbol string `json:"symbol"` | ||
| } | ||
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| type Swap struct { | ||
| Time string `json:"time"` | ||
| TokenA SwapToken `json:"tokenA"` | ||
| TokenAAmount string `json:"tokenAAmount"` | ||
| TokenB SwapToken `json:"tokenB"` | ||
| TokenBAmount string `json:"tokenBAmount"` | ||
| TotalUsd string `json:"totalUsd"` | ||
| } | ||
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| type ActivitySwapResponse struct { | ||
| Data []Swap `json:"data"` | ||
| } | ||
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| const ( | ||
| ActivitySwapEndpoint = "http://dev.api.gnoswap.io/v1/activity?type=%s" | ||
| QueryTypeSwap = "SWAP" | ||
| ) | ||
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| func FetchActivitySwap(endpoint, queryType string) ([]Swap, error) { | ||
| client := &http.Client{} | ||
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| ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second) | ||
| defer cancel() | ||
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| rpc := fmt.Sprintf(endpoint, queryType) | ||
| req, err := http.NewRequestWithContext(ctx, "GET", rpc, nil) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
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| resp, err := client.Do(req) | ||
| if err != nil { | ||
| log.Printf("error: %v", err) | ||
| return nil, err | ||
| } | ||
| defer resp.Body.Close() | ||
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| if resp.StatusCode != http.StatusOK { | ||
| return nil, fmt.Errorf("error: %v", resp.Status) | ||
| } | ||
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| var apiResponse ActivitySwapResponse | ||
| if err := json.NewDecoder(resp.Body).Decode(&apiResponse); err != nil { | ||
| log.Printf("error: %v", err) | ||
| return nil, err | ||
| } | ||
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| return apiResponse.Data, nil | ||
| } | ||
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| var filterToken = map[string]bool{ | ||
| "USDC": true, | ||
| "GNOT": true, | ||
| "GNS": true, | ||
| } | ||
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| func FilterSwaps(swaps []Swap) []Swap { | ||
| filteredSwaps := make([]Swap, 0) | ||
| for _, swap := range swaps { | ||
| _, okA := filterToken[swap.TokenA.Symbol] | ||
| _, okB := filterToken[swap.TokenB.Symbol] | ||
| if okA || okB { | ||
| filteredSwaps = append(filteredSwaps, swap) | ||
| } | ||
| } | ||
| return filteredSwaps | ||
| } |