Imporove datamodel

Tables now contain update_timestamp and update_process and
update_timestamp will be automatically set via a trigger.
Also the I removed the IDs from the tables as they are not
required for the auth system.  The names are the identifier.

migrations/20240426150045_user-roles.sql

@@ -1,29 +1,63 @@
 -- Add migration script here
 CREATE TABLE user (
-    id BLOB(16) NOT NULL PRIMARY KEY,
-    name TEXT NOT NULL
+    name TEXT NOT NULL PRIMARY KEY,
+    update_timestamp TEXT,
+    update_process TEXT NOT NULL
 );
+CREATE TRIGGER user_update_timestamp
+  AFTER UPDATE ON user
+  BEGIN
+    UPDATE user SET update_timestamp = DATETIME('now') WHERE rowid = old.rowid;
+  END;
 
 CREATE TABLE role (
-    id BLOB(16) NOT NULL PRIMARY KEY,
-    name TEXT NOT NULL
+    name TEXT NOT NULL PRIMARY KEY,
+    update_timestamp TEXT,
+    update_process TEXT NOT NULL
 );
+CREATE TRIGGER role_update_timestamp
+  AFTER UPDATE ON role
+  BEGIN
+    UPDATE role SET update_timestamp = DATETIME('now') WHERE rowid = old.rowid;
+  END;
 
 CREATE TABLE privilege (
-    name TEXT NOT NULL PRIMARY KEY
+    name TEXT NOT NULL PRIMARY KEY,
+    update_timestamp TEXT,
+    update_process TEXT NOT NULL
 );
+CREATE TRIGGER privilege_update_timestamp
+  AFTER UPDATE ON privilege
+  BEGIN
+    UPDATE privilege SET update_timestamp = DATETIME('now') WHERE rowid = old.rowid;
+  END;
 
 CREATE TABLE user_role (
-    user_id BLOB(16) NOT NULL,
-    role_id BLOB(16) NOT NULL,
-    CONSTRAINT fk_user FOREIGN KEY (user_id) REFERENCES user(id) ON DELETE CASCADE,
-    CONSTRAINT fk_role FOREIGN KEY (role_id) REFERENCES role(id) ON DELETE CASCADE
-
+    user_name TEXT NOT NULL,
+    role_name TEXT NOT NULL,
+    update_timestamp TEXT,
+    update_process TEXT NOT NULL,
+    CONSTRAINT fk_user FOREIGN KEY (user_name) REFERENCES user(name) ON DELETE CASCADE,
+    CONSTRAINT fk_role FOREIGN KEY (role_name) REFERENCES role(name) ON DELETE CASCADE
+    UNIQUE (user_name, role_name)
 );
+CREATE TRIGGER user_role_update_timestamp
+  AFTER UPDATE ON user_role
+  BEGIN
+    UPDATE user_role SET update_timestamp = DATETIME('now') WHERE rowid = old.rowid;
+  END;
 
 CREATE TABLE role_privilege (
-    role_id BLOB(16) NOT NULL,
+    role_name TEXT NOT NULL,
     privilege_name TEXT NOT NULL,
-    CONSTRAINT fk_group FOREIGN KEY (role_id) REFERENCES role(id) ON DELETE CASCADE,
+    update_timestamp TEXT,
+    update_process TEXT NOT NULL,
+    CONSTRAINT fk_group FOREIGN KEY (role_name) REFERENCES role(name) ON DELETE CASCADE,
     CONSTRAINT fk_privilege FOREIGN KEY (privilege_name) REFERENCES privilege(name) ON DELETE CASCADE
+    UNIQUE (role_name, privilege_name)
 );
+CREATE TRIGGER role_privilege_update_timestamp
+  AFTER UPDATE ON role_privilege
+  BEGIN
+    UPDATE role_privilege SET update_timestamp = DATETIME('now') WHERE rowid = old.rowid;
+  END;