WIP: new user management and authentication system, use go 1.16 embed

internal/authentication/provider.go

@@ -0,0 +1,31 @@
+package authentication
+
+import (
+	"github.com/gin-gonic/gin"
+)
+
+type AuthContext struct {
+	Provider AuthProvider
+	Username string // email or username
+	Password string // optional for OIDC
+	Callback string // callback for OIDC
+}
+
+type AuthProviderType string
+
+const (
+	AuthProviderTypePassword AuthProviderType = "password"
+	AuthProviderTypeOauth    AuthProviderType = "oauth"
+)
+
+type AuthProvider interface {
+	GetName() string
+	GetType() AuthProviderType
+	GetPriority() int // lower number = higher priority
+
+	Login(*AuthContext) (string, error)
+	Logout(*AuthContext) error
+	GetUserModel(*AuthContext) (*User, error)
+
+	SetupRoutes(routes *gin.RouterGroup)
+}