feat: Add migration scripts🫸🌀✏️📗🐧🐳⬆

Author: hendisantika

src/main/resources/db/migration/V1_20241101_0720__Create_Users_Table.sql

@@ -0,0 +1,7 @@
+CREATE TABLE Users (
+                       user_id SERIAL PRIMARY KEY,
+                       username VARCHAR(50) UNIQUE NOT NULL,
+                       email VARCHAR(100) UNIQUE NOT NULL,
+                       password VARCHAR(100) NOT NULL,
+                       created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);

src/main/resources/db/migration/V2_20241101_0721__Create_Books_Table.sql

@@ -0,0 +1,9 @@
+CREATE TABLE Books (
+                       book_id SERIAL PRIMARY KEY,
+                       title VARCHAR(100) NOT NULL,
+                       author VARCHAR(100) NOT NULL,
+                       isbn VARCHAR(20) UNIQUE NOT NULL,
+                       published_date DATE,
+                       genre VARCHAR(50),
+                       created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);

src/main/resources/db/migration/V3_20241101_0722__Create_BookInstances_Table.sql

@@ -0,0 +1,7 @@
+CREATE TABLE BookInstances (
+                               instance_id SERIAL PRIMARY KEY,
+                               book_id INT REFERENCES Books(book_id),
+                               status VARCHAR(20) CHECK (status IN ('available', 'checked_out', 'reserved')) NOT NULL,
+                               due_date DATE,
+                               created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);

src/main/resources/db/migration/V4_20241101_0724__Create_Checkouts_Table.sql

@@ -0,0 +1,7 @@
+CREATE TABLE Checkouts (
+                           checkout_id SERIAL PRIMARY KEY,
+                           user_id INT REFERENCES Users(user_id),
+                           instance_id INT REFERENCES BookInstances(instance_id),
+                           checkout_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                           return_date TIMESTAMP
+);