refactoring db; added email-verification

internal/database/schema.sql

@@ -1,5 +1,5 @@
 CREATE TABLE users (
-    id INT PRIMARY KEY,
+    id INTEGER PRIMARY KEY,
     created_at DATETIME NOT NULL,
     updated_at DATETIME NOT NULL,
     first_name VARCHAR(50) NOT NULL,
@@ -11,7 +11,6 @@ CREATE TABLE users (
     drivers_id_checked BOOLEAN,
     role_id INT,
     payment_status VARCHAR(50),
-    membership_status VARCHAR(50),
     date_of_birth DATE,
     address VARCHAR(255),
     profile_picture VARCHAR(255),
@@ -21,7 +20,7 @@ CREATE TABLE users (
 );
 
 CREATE TABLE banking (
-    id INT PRIMARY KEY,
+    id INTEGER PRIMARY KEY,
     user_id INT,
     iban VARCHAR(34) NOT NULL,
     bic VARCHAR(11) NOT NULL,
@@ -32,25 +31,31 @@ CREATE TABLE banking (
     FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
 );
 
-CREATE TABLE membership (
-    id INT PRIMARY KEY,
-    user_id INT,
-    membership_fee DECIMAL(10, 2),
-    rental_fee DECIMAL(10, 2),
+CREATE TABLE memberships (
+    id INTEGER PRIMARY KEY,
+    user_id INT NOT NULL,
+    parent_id INT, 
+    model_id INT,
+    start_date DATE,
+    end_date DATE,
+    status VARCHAR(50),
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+);
+
+CREATE TABLE membership_plans (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    name TEXT NOT NULL,
+    monthly_fee DECIMAL(10, 2),
+    hourly_rate DECIMAL(10, 2),
     included_hours_per_year INT,
     remaining_hours_per_year INT,
     included_hours_per_month INT,
     remaining_hours_per_month INT,
-    membership_model VARCHAR(50),
-    membership_id VARCHAR(50),
-    membership_start_date DATE,
-    membership_end_date DATE,
-    discount_rate DECIMAL(5, 2),
-    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+    details TEXT
 );
 
 CREATE TABLE rentals (
-    id INT PRIMARY KEY,
+    id INTEGER PRIMARY KEY,
     car_id INT,
     user_id INT,
     start_datetime DATETIME NOT NULL,
@@ -64,12 +69,12 @@ CREATE TABLE rentals (
 );
 
 CREATE TABLE roles (
-    id INT PRIMARY KEY,
+    id INTEGER PRIMARY KEY,
     role_name VARCHAR(50) NOT NULL
 );
 
 CREATE TABLE consents (
-    id INT PRIMARY KEY,
+    id INTEGER PRIMARY KEY,
     user_id INT,
     updated_at DATE,
     created_at DATE,
@@ -81,7 +86,7 @@ CREATE TABLE consents (
 );
 
 CREATE TABLE cars (
-    id INT PRIMARY KEY,
+    id INTEGER PRIMARY KEY,
     licence_plate VARCHAR(15) NOT NULL UNIQUE,
     insurance VARCHAR(255) NOT NULL,
     acquired_date DATE NOT NULL,
@@ -100,10 +105,10 @@ CREATE TABLE cars (
 );
 
 CREATE TABLE email_verifications (
-    id INT PRIMARY KEY,
+    id INTEGER PRIMARY KEY,
     user_id INT,
     verification_token VARCHAR(255) NOT NULL,
     created_at DATETIME NOT NULL,
-    verified_at DATETIME,
+    verified_at DATETIME DEFAULT NULL,
     FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
 );