From c39dce1380e25b851ed54fa4751603759b8c2f43 Mon Sep 17 00:00:00 2001
From: Janis Hutz <development@janishutz.com>
Date: Sat, 26 Sep 2026 16:08:30 +0200
Subject: [PATCH] feat: basic sdk complete

---
 go.mod  |  3 +++
 main.go | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 84 insertions(+)
 create mode 100644 go.mod
 create mode 100644 main.go

diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..225efb0
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module git.janishutz.com/janishutz-store/go-sdk
+
+go 1.27.1
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..1a5fa6d
--- /dev/null
+++ b/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"
+}