-- recipe
create table if not exists recipe (
    id serial primary key,
    title varchar(60) not null UNIQUE,
    description text not null default '',
    image varchar(42) not null,
    cooking_time varchar(16) not null,
    servings smallint not null default 1,
    cal varchar(16) not null
);
-- recipe ingredients group
create table if not exists recipe_ingredients_group (
    id serial primary key,
    recipe_id integer references recipe(id) on delete cascade,
    title varchar(26) default ''
);
-- recipe ingredients
create table if not exists recipe_ingredients (
    recipe_ingredients_group_id integer references recipe_ingredients_group(id) on delete cascade,
    ingredient text not null
);
-- recipe steps
create table if not exists recipe_steps (
    recipe_id integer references recipe(id) on delete cascade,
    step_num integer not null,
    step_text text not null
);
-- recipe advices
create table if not exists recipe_advices (
    recipe_id integer references recipe(id) on delete cascade,
    advice text
);
-- recipe categories
create table if not exists recipe_categories (
    recipe_id integer references recipe(id) on delete cascade,
    category text
);