feat: basic sdk complete

go.mod

@@ -0,0 +1,3 @@
+module git.janishutz.com/janishutz-store/go-sdk
+
+go 1.27.1

main.go

@@ -0,0 +1,81 @@
+package gosdk
+
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"net/http"
+)
+
+type Configuration struct {
+	BackendUrl    string
+	Secret        string
+	ServiceId     string
+	BypassingUids []string
+	UseStubs      bool
+	StubsDefault  bool
+}
+
+type requestBody struct {
+	Secret      string `json:"signingSecret"`
+	ServiceId   string `json:"name"`
+	Uid         string `json:"uid"`
+	ProductId   string `json:"productID"`
+	ProductType string `json:"type"`
+}
+
+var conf *Configuration
+var usingStubs bool
+var failCountSinceLastSuccess int
+
+func Init(config Configuration) {
+	conf = &config
+	usingStubs = false
+	failCountSinceLastSuccess = 0
+}
+
+// Check if a given users owns a product. Make sure to always
+func CheckOwned(uid string, productId string, productType string) bool {
+	if conf == nil {
+		panic("CheckOwned called prior to Store SDK initialization")
+	}
+
+	if usingStubs || conf.UseStubs {
+		return conf.StubsDefault
+	}
+
+	// Bypass check
+	for _, v := range conf.BypassingUids {
+		if v == uid {
+			return true
+		}
+	}
+
+	// Create request
+	data, err := json.Marshal(requestBody{
+		Secret:      conf.Secret,
+		ServiceId:   conf.ServiceId,
+		Uid:         uid,
+		ProductId:   productId,
+		ProductType: productType,
+	})
+	if err != nil {
+		return false
+	}
+
+	res, err := http.Post(conf.BackendUrl+"/sdk/api/check", "application/json", bytes.NewBuffer(data))
+	if err != nil {
+		if failCountSinceLastSuccess > 10 {
+			usingStubs = true
+		}
+		failCountSinceLastSuccess += 1
+		return false
+	}
+	failCountSinceLastSuccess = 0
+
+	body, err := io.ReadAll(res.Body)
+	if err != nil {
+		return false
+	}
+	return string(body) == "true"
+}