feat: add address. remove orders

Author: tianzhou

multifile/procedures/set_default_address.sql

@@ -0,0 +1,38 @@
+CREATE OR REPLACE PROCEDURE set_default_address(
+    p_user_id integer,
+    p_address_id integer
+)
+LANGUAGE plpgsql
+AS $$
+BEGIN
+    -- Check if the address exists and belongs to the user
+    IF NOT EXISTS (
+        SELECT 1 FROM addresses 
+        WHERE id = p_address_id AND user_id = p_user_id
+    ) THEN
+        RAISE EXCEPTION 'Address % does not exist or does not belong to user %', 
+            p_address_id, p_user_id;
+    END IF;
+    
+    -- Start transaction
+    BEGIN
+        -- Set all addresses for this user to non-default
+        UPDATE addresses 
+        SET is_default = false 
+        WHERE user_id = p_user_id;
+        
+        -- Set the specified address as default
+        UPDATE addresses 
+        SET is_default = true 
+        WHERE id = p_address_id;
+        
+        -- Log the change (optional - remove if you don't need logging)
+        RAISE NOTICE 'Default address set to % for user %', p_address_id, p_user_id;
+    
+    EXCEPTION
+        WHEN OTHERS THEN
+            -- Rollback will happen automatically
+            RAISE EXCEPTION 'Failed to set default address: %', SQLERRM;
+    END;
+END;
+$$;

multifile/tables/addresses.sql

@@ -0,0 +1,10 @@
+CREATE TABLE IF NOT EXISTS addresses (
+    id integer PRIMARY KEY,
+    user_id integer NOT NULL REFERENCES users(id),
+    street_address text NOT NULL,
+    city text NOT NULL,
+    state_province text,
+    postal_code text,
+    country text NOT NULL DEFAULT 'USA',
+    is_default boolean DEFAULT false
+);

multifile/tables/orders.sql

@@ -5,7 +5,8 @@
 CREATE TABLE IF NOT EXISTS users (
     id integer PRIMARY KEY,
     email text NOT NULL CHECK (email LIKE '%@%'),
-    name text NOT NULL
+    name text NOT NULL,
+    city text NOT NULL
 );
 
 COMMENT ON TABLE users IS 'User accounts';