Add authentication server, dev CLI, Docker multi-service setup, and cross-platform improvements

server/internal/model/platform.go

@@ -0,0 +1,77 @@
+package model
+
+import (
+	"context"
+	"strconv"
+
+	"google.golang.org/grpc/metadata"
+)
+
+type ClientPlatform struct {
+	OsType       int32 // 1=iOS, 2=Android
+	PlatformType int32 // 1=AppStore, 2=GooglePlay, 8=Amazon
+}
+
+const (
+	OsTypeIOS     int32 = 1
+	OsTypeAndroid int32 = 2
+
+	PlatformTypeAppStore        int32 = 1
+	PlatformTypeGooglePlayStore int32 = 2
+	PlatformTypeAmazonAppStore  int32 = 8
+)
+
+var DefaultPlatform = ClientPlatform{OsType: OsTypeAndroid, PlatformType: PlatformTypeGooglePlayStore}
+
+type platformKey struct{}
+
+func (p ClientPlatform) String() string {
+	os := "unknown"
+	switch p.OsType {
+	case OsTypeIOS:
+		os = "iOS"
+	case OsTypeAndroid:
+		os = "Android"
+	}
+	plat := "unknown"
+	switch p.PlatformType {
+	case PlatformTypeAppStore:
+		plat = "AppStore"
+	case PlatformTypeGooglePlayStore:
+		plat = "GooglePlay"
+	case PlatformTypeAmazonAppStore:
+		plat = "Amazon"
+	}
+	return os + "/" + plat
+}
+
+func ClientPlatformFromHeaders(ctx context.Context) ClientPlatform {
+	md, ok := metadata.FromIncomingContext(ctx)
+	if !ok {
+		return DefaultPlatform
+	}
+
+	p := DefaultPlatform
+	if vals := md.Get("x-apb-os-type"); len(vals) > 0 {
+		if v, err := strconv.ParseInt(vals[0], 10, 32); err == nil {
+			p.OsType = int32(v)
+		}
+	}
+	if vals := md.Get("x-apb-platform-type"); len(vals) > 0 {
+		if v, err := strconv.ParseInt(vals[0], 10, 32); err == nil {
+			p.PlatformType = int32(v)
+		}
+	}
+	return p
+}
+
+func NewContextWithPlatform(ctx context.Context, p ClientPlatform) context.Context {
+	return context.WithValue(ctx, platformKey{}, p)
+}
+
+func ClientPlatformFromContext(ctx context.Context) ClientPlatform {
+	if p, ok := ctx.Value(platformKey{}).(ClientPlatform); ok {
+		return p
+	}
+	return DefaultPlatform
+}