- add: roles to user

- add: register calls for auth server
- add: user lookup by email
- add: start of password reset
- add: Cache trait to allow redis cache mocking

proto/auth.proto

@@ -5,6 +5,9 @@ package auth;
 service AuthService {
     rpc Login(LoginRequest) returns (LoginResponse);
     rpc ValidateToken(ValidateTokenRequest) returns (ValidateTokenResponse);
+    rpc Register (RegisterRequest) returns (RegisterResponse);
+    rpc RequestPasswordReset (PasswordResetRequest) returns (PasswordResetResponse);
+    rpc ResetPassword (ResetPasswordRequest) returns (ResetPasswordResponse);
 }
 
 message LoginRequest {
@@ -25,3 +28,30 @@ message ValidateTokenResponse {
     bool valid = 1;
     string user_id = 2;
 }
+
+message RegisterRequest {
+    string username = 1;
+    string email = 2;
+    string password = 3;
+}
+
+message RegisterResponse {
+    int32 user_id = 1;
+}
+
+message PasswordResetRequest {
+    string email = 1;
+}
+
+message PasswordResetResponse {
+    string message = 1;
+}
+
+message ResetPasswordRequest {
+    string reset_token = 1;
+    string new_password = 2;
+}
+
+message ResetPasswordResponse {
+    string message = 1;
+}

proto/database.proto

@@ -6,6 +6,7 @@ service DatabaseService {
     rpc GetUser(GetUserRequest) returns (GetUserResponse);
     rpc CreateUser(CreateUserRequest) returns (CreateUserResponse);
     rpc GetUserByUsername(GetUserByUsernameRequest) returns (GetUserResponse);
+    rpc GetUserByEmail(GetUserByEmailRequest) returns (GetUserResponse);
 }
 
 message GetUserRequest {
@@ -16,11 +17,16 @@ message GetUserByUsernameRequest {
     string username = 1;
 }
 
+message GetUserByEmailRequest {
+    string email = 1;
+}
+
 message GetUserResponse {
     int32 user_id = 1;
     string username = 2;
     string email = 3;
     string hashed_password = 4;
+    repeated string roles = 5;
 }
 
 message CreateUserRequest {