DROP TABLE IF EXISTS product_descriptions_updated CASCADE;

CREATE TABLE product_descriptions_updated (
    id INTEGER GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
    productid INT NOT NULL,
    locale_id INT NOT NULL,
    product_type VARCHAR(50) NOT NULL,
    updated TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,

    -- Foreign key constraint for productid
    -- This constraint creates a foreign key relationship between the 'productid' column in the current table
    -- and the 'productid' column in the 'product-products' table. The ON DELETE CASCADE clause means that if a product is
    -- deleted from the 'product-products' table, all corresponding rows in this table will also be automatically deleted.
    CONSTRAINT fk_product_descriptions_updated_product
        FOREIGN KEY (productid) REFERENCES "product-products"(productid)
        ON DELETE CASCADE,

    -- Foreign key constraint for locale_id
    -- This constraint creates a foreign key relationship between the 'locale_id' column in the current table
    -- and the 'id' column in the 'locales' table. The ON DELETE CASCADE clause means that if a locale is
    -- deleted from the 'locales' table, all corresponding rows in this table will also be automatically deleted.
    CONSTRAINT fk_product_descriptions_updated_locale
        FOREIGN KEY (locale_id) REFERENCES locales(id)
        ON DELETE CASCADE,

    -- Check constraint for product_type
    -- This constraint ensures that the product_type column only contains allowed values
    -- It restricts the product_type to be one of: 'wallpaper', 'canvas', or 'poster'
    -- Any attempt to insert or update a record with a different product_type will fail
    CONSTRAINT chk_product_descriptions_updated_product_type
        CHECK (product_type IN ('wallpaper', 'canvas', 'poster'))
);

-- Additional indexes for query performance
CREATE INDEX idx_product_descriptions_updated_productid
    ON product_descriptions_updated (productid);

CREATE INDEX idx_product_descriptions_updated_locale_id
    ON product_descriptions_updated (locale_id);

CREATE INDEX idx_product_descriptions_updated_updated
    ON product_descriptions_updated (updated DESC);

-- Unique index to ensure one record per product, locale, and product type combination
CREATE UNIQUE INDEX unique_product_locale_product_type
    ON product_descriptions_updated (productid, locale_id, product_type);