refactor: improved table structure

sqlc/schema.sql

@@ -1,20 +1,20 @@
--- TODO: login information must exist too
 CREATE TABLE IF NOT EXISTS "users" (
   id BIGSERIAL PRIMARY KEY,
   username VARCHAR(20) UNIQUE NOT NULL,
-  verified BOOLEAN,
-  banned BOOLEAN,
-  registration_date TIMESTAMP NOT NULL
+  verified BOOLEAN DEFAULT FALSE,
+  banned BOOLEAN DEFAULT FALSE,
+  registration_date TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
 );
 
 CREATE TABLE IF NOT EXISTS "login_informations"  (
   id BIGSERIAL PRIMARY KEY,
   user_id BIGINT UNIQUE NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-  email VARCHAR(75),
+  email VARCHAR(75) UNIQUE,
   password_hash VARCHAR(512) NOT NULL,
   totp_encrypted VARCHAR(512),
-  email_2fa_enabled BOOLEAN,
-  password_change_time TIMESTAMP
+  email_2fa_enabled BOOLEAN DEFAULT FALSE,
+  password_change_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+  password_times_changed INTEGER DEFAULT 0
 );
 
 CREATE TABLE IF NOT EXISTS "confirmation_codes" (
@@ -22,9 +22,9 @@ CREATE TABLE IF NOT EXISTS "confirmation_codes" (
   user_id BIGINT UNIQUE NOT NULL REFERENCES users(id) ON DELETE CASCADE,
   type INTEGER NOT NULL,
   code VARCHAR(36) NOT NULL,
-  expires_at TIMESTAMP NOT NULL,
-  used BOOLEAN,
-  deleted BOOLEAN
+  expires_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP + INTERVAL '10 minutes',
+  used BOOLEAN DEFAULT FALSE,
+  deleted BOOLEAN DEFAULT FALSE
 );
 
 CREATE TABLE IF NOT EXISTS "sessions" (
@@ -34,9 +34,9 @@ CREATE TABLE IF NOT EXISTS "sessions" (
   name VARCHAR(100),
   platform VARCHAR(32),
   latest_ip VARCHAR(16),
-  login_time TIMESTAMP NOT NULL,
-  last_seen_date TIMESTAMP NOT NULL,
-  terminated BOOLEAN
+  login_time TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  last_seen_date TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  terminated BOOLEAN DEFAULT FALSE
 );
 
 CREATE TABLE IF NOT EXISTS "profiles" (