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feat: added support for CoinCap as a data source for crypto price quotes
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| package coincap_test | ||
|
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| import ( | ||
| "testing" | ||
|
|
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| "github.com/go-resty/resty/v2" | ||
| "github.com/jarcoal/httpmock" | ||
| . "github.com/onsi/ginkgo/v2" | ||
| . "github.com/onsi/gomega" | ||
| ) | ||
|
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| var client = resty.New() | ||
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| var _ = BeforeSuite(func() { | ||
| httpmock.ActivateNonDefault(client.GetClient()) | ||
| }) | ||
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| var _ = BeforeEach(func() { | ||
| httpmock.Reset() | ||
| }) | ||
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| var _ = AfterSuite(func() { | ||
| httpmock.DeactivateAndReset() | ||
| }) | ||
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| func TestQuote(t *testing.T) { | ||
| RegisterFailHandler(Fail) | ||
| RunSpecs(t, "CoinCap Quote Suite") | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| package coincap_test | ||
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| import ( | ||
| "net/http" | ||
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| "github.com/jarcoal/httpmock" | ||
| . "github.com/onsi/ginkgo/v2" | ||
| . "github.com/onsi/gomega" | ||
|
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| c "github.com/achannarasappa/ticker/internal/common" | ||
| . "github.com/achannarasappa/ticker/internal/quote/coincap" | ||
| g "github.com/onsi/gomega/gstruct" | ||
| ) | ||
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| var _ = Describe("CoinCap Quote", func() { | ||
| Describe("GetAssetQuotes", func() { | ||
| It("should make a request to get stock quotes and transform the response", func() { | ||
| responseFixture := `{ | ||
| "data": [ | ||
| { | ||
| "id": "bitcoin", | ||
| "rank": "1", | ||
| "symbol": "BTC", | ||
| "name": "Bitcoin", | ||
| "supply": "19685775.0000000000000000", | ||
| "maxSupply": "21000000.0000000000000000", | ||
| "marketCapUsd": "1248489381324.9592799671502700", | ||
| "volumeUsd24Hr": "7744198446.5431034815177485", | ||
| "priceUsd": "63420.8905326287270868", | ||
| "changePercent24Hr": "1.3622077494913284", | ||
| "vwap24Hr": "62988.1090433238215198", | ||
| "explorer": "https://blockchain.info/" | ||
| } | ||
| ], | ||
| "timestamp": 1714453771801 | ||
| }` | ||
| responseUrl := `=~\/v2\/assets.*ids\=bitcoin.*` | ||
| httpmock.RegisterResponder("GET", responseUrl, func(req *http.Request) (*http.Response, error) { | ||
| resp := httpmock.NewStringResponse(200, responseFixture) | ||
| resp.Header.Set("Content-Type", "application/json") | ||
| return resp, nil | ||
| }) | ||
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| output := GetAssetQuotes(*client, []string{"bitcoin"}) | ||
| Expect(output).To(g.MatchAllElementsWithIndex(g.IndexIdentity, g.Elements{ | ||
| "0": g.MatchFields(g.IgnoreExtras, g.Fields{ | ||
| "QuotePrice": g.MatchFields(g.IgnoreExtras, g.Fields{ | ||
| "Price": Equal(63420.89053262873), | ||
| "PricePrevClose": Equal(64284.8148182606), | ||
| "PriceOpen": Equal(0.0), | ||
| "PriceDayHigh": Equal(0.0), | ||
| "PriceDayLow": Equal(0.0), | ||
| "Change": Equal(863.9242856318742), | ||
| "ChangePercent": Equal(1.3622077494913285), | ||
| }), | ||
| "QuoteSource": Equal(c.QuoteSourceCoinCap), | ||
| "Exchange": g.MatchFields(g.IgnoreExtras, g.Fields{ | ||
| "IsActive": BeTrue(), | ||
| "IsRegularTradingSession": BeTrue(), | ||
| }), | ||
| }), | ||
| })) | ||
| }) | ||
| }) | ||
| }) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| package coincap | ||
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| import ( | ||
| "strconv" | ||
| "strings" | ||
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| c "github.com/achannarasappa/ticker/internal/common" | ||
| "github.com/go-resty/resty/v2" | ||
| ) | ||
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| // Quote represents a quote of a single security from the API response | ||
| type Quote struct { | ||
| ShortName string `json:"name"` | ||
| Symbol string `json:"symbol"` | ||
| RegularMarketChangePercent string `json:"changePercent24Hr"` | ||
| RegularMarketPrice string `json:"priceUsd"` | ||
| RegularMarketVolume string `json:"volumeUsd24Hr"` | ||
| MarketCap string `json:"marketCapUsd"` | ||
| } | ||
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| // Response represents the container object from the API response | ||
| type Response struct { | ||
| Data []Quote `json:"data"` | ||
| } | ||
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| func transformQuote(responseQuote Quote) c.AssetQuote { | ||
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| price, _ := strconv.ParseFloat(responseQuote.RegularMarketPrice, 64) | ||
| changePercent, _ := strconv.ParseFloat(responseQuote.RegularMarketChangePercent, 64) | ||
| pricePrevClose := (1 + changePercent/100) * price | ||
| marketCap, _ := strconv.ParseFloat(responseQuote.MarketCap, 64) | ||
| volume, _ := strconv.ParseFloat(responseQuote.RegularMarketVolume, 64) | ||
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| assetQuote := c.AssetQuote{ | ||
| Name: responseQuote.ShortName, | ||
| Symbol: responseQuote.Symbol, | ||
| Class: c.AssetClassCryptocurrency, | ||
| Currency: c.Currency{ | ||
| FromCurrencyCode: "USD", | ||
| }, | ||
| QuotePrice: c.QuotePrice{ | ||
| Price: price, | ||
| PricePrevClose: pricePrevClose, | ||
| PriceOpen: 0.0, | ||
| PriceDayHigh: 0.0, | ||
| PriceDayLow: 0.0, | ||
| Change: pricePrevClose - price, | ||
| ChangePercent: changePercent, | ||
| }, | ||
| QuoteExtended: c.QuoteExtended{ | ||
| FiftyTwoWeekHigh: 0.0, | ||
| FiftyTwoWeekLow: 0.0, | ||
| MarketCap: marketCap, | ||
| Volume: volume, | ||
| }, | ||
| QuoteSource: c.QuoteSourceCoinCap, | ||
| Exchange: c.Exchange{ | ||
| Name: "Crypto Aggregate via CoinCap", | ||
| Delay: 0, | ||
| State: c.ExchangeStateOpen, | ||
| IsActive: true, | ||
| IsRegularTradingSession: true, | ||
| }, | ||
| Meta: c.Meta{ | ||
| IsVariablePrecision: true, | ||
| }, | ||
| } | ||
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| return assetQuote | ||
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| } | ||
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| func transformQuotes(responseQuotes []Quote) []c.AssetQuote { | ||
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| quotes := make([]c.AssetQuote, 0) | ||
| for _, responseQuote := range responseQuotes { | ||
| quotes = append(quotes, transformQuote(responseQuote)) | ||
| } | ||
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| return quotes | ||
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| } | ||
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| // GetAssetQuotes issues a HTTP request to retrieve quotes from the API and process the response | ||
| func GetAssetQuotes(client resty.Client, symbols []string) []c.AssetQuote { | ||
| symbolsString := strings.Join(symbols, ",") | ||
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| res, _ := client.R(). | ||
| SetResult(Response{}). | ||
| SetQueryParam("ids", strings.ToLower(symbolsString)). | ||
| Get("https://api.coincap.io/v2/assets") | ||
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| return transformQuotes((res.Result().(*Response)).Data) //nolint:forcetypeassert | ||
|
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -27,6 +27,10 @@ func getPrecision(f float64) int { | |
| return 3 | ||
| } | ||
|
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| if v >= 1000 && f < 0 { | ||
| return 1 | ||
| } | ||
|
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| return 2 | ||
| } | ||
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