comment

projects/estore/inventory/schema.hcl

@@ -303,9 +303,7 @@ trigger "after_order_insert" {
   as = <<-SQL
   BEGIN
       DECLARE regionId INT;
-  
-      -- Assuming each product is linked to a single warehouse, which is a simplification.
-      -- This might need a more complex logic based on how your warehouses and orders are structured.
+
       SELECT w.region_id INTO regionId
       FROM warehouses w
       JOIN inventory_items ii ON w.warehouse_id = ii.warehouse_id

projects/estore/inventory/schema.sql

@@ -0,0 +1,110 @@
+CREATE TABLE categories (
+                            category_id INT AUTO_INCREMENT PRIMARY KEY,
+                            name VARCHAR(255) NOT NULL,
+                            description TEXT
+);
+
+CREATE TABLE suppliers (
+                           supplier_id INT AUTO_INCREMENT PRIMARY KEY,
+                           name VARCHAR(255) NOT NULL,
+                           contact_info TEXT
+);
+CREATE TABLE products (
+                          product_id INT AUTO_INCREMENT PRIMARY KEY,
+                          name VARCHAR(255) NOT NULL,
+                          category_id INT,
+                          supplier_id INT,
+                          price DECIMAL(10, 2) NOT NULL,
+                          description TEXT,
+                          FOREIGN KEY (category_id) REFERENCES categories(category_id),
+                          FOREIGN KEY (supplier_id) REFERENCES suppliers(supplier_id)
+);
+
+CREATE TABLE regions (
+                         region_id INT AUTO_INCREMENT PRIMARY KEY,
+                         name VARCHAR(255) NOT NULL
+);
+
+CREATE TABLE warehouses (
+                            warehouse_id INT AUTO_INCREMENT PRIMARY KEY,
+                            name VARCHAR(255) NOT NULL,
+                            address TEXT NOT NULL,
+                            region_id INT,
+    -- Add a foreign key for region_id if regions are predefined
+    FOREIGN KEY (region_id) REFERENCES regions(region_id)
+
+);
+
+CREATE TABLE inventory_items (
+                                 inventory_id INT AUTO_INCREMENT PRIMARY KEY,
+                                 product_id INT,
+                                 warehouse_id INT,
+                                 quantity INT DEFAULT 0,
+                                 FOREIGN KEY (product_id) REFERENCES products(product_id),
+                                 FOREIGN KEY (warehouse_id) REFERENCES warehouses(warehouse_id)
+);
+
+CREATE TABLE orders (
+                        order_id INT AUTO_INCREMENT PRIMARY KEY,
+                        product_id INT,
+                        quantity INT NOT NULL,
+                        order_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                        customer_info TEXT,
+                        status VARCHAR(100),
+                        FOREIGN KEY (product_id) REFERENCES products(product_id)
+);
+
+CREATE TABLE shipments (
+                           shipment_id INT AUTO_INCREMENT PRIMARY KEY,
+                           product_id INT,
+                           warehouse_id INT,
+                           quantity INT NOT NULL,
+                           shipment_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                           FOREIGN KEY (product_id) REFERENCES products(product_id),
+                           FOREIGN KEY (warehouse_id) REFERENCES warehouses(warehouse_id)
+);
+
+CREATE TABLE inventory_by_region (
+                                     region_id INT,
+                                     product_id INT,
+                                     total_quantity INT,
+                                     PRIMARY KEY (region_id, product_id),
+                                     FOREIGN KEY (region_id) REFERENCES regions(region_id),
+                                     FOREIGN KEY (product_id) REFERENCES products(product_id)
+);
+
+DELIMITER $$
+CREATE TRIGGER after_shipment_insert
+AFTER INSERT ON shipments
+FOR EACH ROW
+BEGIN
+    DECLARE regionId INT;
+
+    SELECT region_id INTO regionId FROM warehouses WHERE warehouse_id = NEW.warehouse_id;
+
+    INSERT INTO inventory_by_region (region_id, product_id, total_quantity)
+    VALUES (regionId, NEW.product_id, NEW.quantity)
+    ON DUPLICATE KEY UPDATE total_quantity = total_quantity + NEW.quantity;
+END$$
+DELIMITER ;
+
+DELIMITER $$
+CREATE TRIGGER after_order_insert
+AFTER INSERT ON orders
+FOR EACH ROW
+BEGIN
+    DECLARE regionId INT;
+
+    -- Assuming each product is linked to a single warehouse, which is a simplification.
+    -- This might need a more complex logic based on how your warehouses and orders are structured.
+    SELECT w.region_id INTO regionId
+    FROM warehouses w
+    JOIN inventory_items ii ON w.warehouse_id = ii.warehouse_id
+    WHERE ii.product_id = NEW.product_id
+    LIMIT 1; -- This is a simplification and might need adjustment.
+
+    UPDATE inventory_by_region
+    SET total_quantity = total_quantity - NEW.quantity
+    WHERE region_id = regionId AND product_id = NEW.product_id;
+END$$
+DELIMITER ;