Refactor loan and user management components and backend routes

- Updated LoanTable component to fetch loan data from new API endpoint and display notes.
- Enhanced UserTable component to include additional user fields (first name, last name, email, admin status) and updated input handling.
- Modified fetcher utility to use new user data API endpoint.
- Adjusted login functionality to point to the new admin login endpoint and handle unauthorized access.
- Refactored user actions utility to align with updated API endpoints for user management.
- Updated backend routes for user and loan data management to reflect new structure and naming conventions.
- Revised SQL schema and mock data to accommodate new fields and constraints.
- Changed Docker configuration to use the new database name.

backendV2/schemeV2.sql

@@ -17,7 +17,7 @@ CREATE TABLE users (
 CREATE TABLE loans (
   id int NOT NULL AUTO_INCREMENT,
   username varchar(100) NOT NULL,
-  loan_code int NOT NULL UNIQUE,
+  loan_code Char(6) NOT NULL UNIQUE,
   start_date timestamp NOT NULL,
   end_date timestamp NOT NULL,
   take_date timestamp NULL DEFAULT NULL,
@@ -28,10 +28,7 @@ CREATE TABLE loans (
   deleted bool NOT NULL DEFAULT false,
   note varchar(500) DEFAULT NULL,
   PRIMARY KEY (id),
-  CONSTRAINT fk_loans_username
-    FOREIGN KEY (username) REFERENCES users(username)
-    ON UPDATE CASCADE
-    ON DELETE RESTRICT
+  CHECK (loan_code REGEXP '^[0-9]{6}$')
 ) ENGINE=InnoDB;
 
 CREATE TABLE items (
@@ -47,15 +44,11 @@ CREATE TABLE items (
 );
 
 CREATE TABLE apiKeys (
-  id int NOT NULL AUTO_INCREMENT,
+  id INT NOT NULL AUTO_INCREMENT,
   api_key CHAR(15) NOT NULL UNIQUE,
-  username VARCHAR(100) NOT NULL,
-  last_used_at timestamp DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP,
-  entry_created_at timestamp NULL DEFAULT CURRENT_TIMESTAMP,
+  entry_name VARCHAR(100) NOT NULL,
+  last_used_at TIMESTAMP NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP,
+  entry_created_at TIMESTAMP NULL DEFAULT CURRENT_TIMESTAMP,
   PRIMARY KEY (id),
-  CONSTRAINT chk_api_key_len CHECK (CHAR_LENGTH(api_key) = 15),
-  CONSTRAINT fk_apikeys_username
-    FOREIGN KEY (username) REFERENCES users(username)
-    ON UPDATE CASCADE
-    ON DELETE RESTRICT
+  CHECK (api_key REGEXP '^[0-9]{15}$')
 ) ENGINE=InnoDB;