-- Drop the table if it exists to start fresh
DROP TABLE IF EXISTS editorial_collection_products;

-- Create editorial_collection_products table
CREATE TABLE editorial_collection_products (
    id SERIAL PRIMARY KEY,
    editorial_page_id INTEGER NOT NULL,
    product_id INTEGER NOT NULL,
    print_id INTEGER NOT NULL,
    inserted TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),

    -- Foreign key constraints with CASCADE DELETE
    CONSTRAINT fk_editorial_collection_products_editorial_page
        FOREIGN KEY (editorial_page_id) REFERENCES editorial_pages(id) ON DELETE CASCADE,
    CONSTRAINT fk_editorial_collection_products_product
        FOREIGN KEY (product_id) REFERENCES "product-products"(productid) ON DELETE CASCADE,
    CONSTRAINT fk_editorial_collection_products_print
        FOREIGN KEY (print_id) REFERENCES "product-printproducts"(printid) ON DELETE CASCADE,

    -- Ensure unique combination of editorial page, product and print
    UNIQUE(editorial_page_id, product_id, print_id)
);

-- Create indexes for better query performance
CREATE INDEX idx_editorial_collection_products_editorial_page_id
    ON editorial_collection_products(editorial_page_id);
CREATE INDEX idx_editorial_collection_products_product_id
    ON editorial_collection_products(product_id);
CREATE INDEX idx_editorial_collection_products_print_id
    ON editorial_collection_products(print_id);

-- Migrate existing data from editorial_pages metadata
INSERT INTO editorial_collection_products (editorial_page_id, product_id, print_id)
SELECT
    ep.id as editorial_page_id,
    CAST(product_id AS INTEGER) as product_id,
    pp.printid
FROM editorial_pages ep
CROSS JOIN LATERAL jsonb_array_elements_text(ep.metadata->'collection_products') AS product_id
INNER JOIN "product-printproducts" pp ON pp.productid = CAST(product_id AS INTEGER)
WHERE ep.metadata->'collection_products' IS NOT NULL
  AND jsonb_typeof(ep.metadata->'collection_products') = 'array'
  AND jsonb_array_length(ep.metadata->'collection_products') > 0;