CREATE TABLE IF NOT EXISTS navigation_items (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  label TEXT NOT NULL,
  url TEXT NOT NULL,
  location TEXT NOT NULL DEFAULT 'primary',
  sort_order INTEGER NOT NULL DEFAULT 0,
  is_visible BOOLEAN NOT NULL DEFAULT true,
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  UNIQUE (location, label, url),
  CONSTRAINT navigation_items_location_check CHECK (location IN ('primary', 'footer'))
);

CREATE INDEX IF NOT EXISTS navigation_items_location_sort_order_idx
  ON navigation_items (location, sort_order ASC, label ASC);

INSERT INTO navigation_items (label, url, location, sort_order, is_visible)
SELECT seed.label, seed.url, seed.location, seed.sort_order, seed.is_visible
FROM (
  VALUES
    ('Home pages', '/', 'primary', 10, true),
    ('Tags', '/tags', 'primary', 20, true),
    ('Authors', '/pages/about', 'primary', 30, true),
    ('Style', '/post/hello-sori-studio', 'primary', 40, true),
    ('Post types', '/post/custom-writing-tool', 'primary', 50, true),
    ('Members', '/pages/contact', 'primary', 60, true),
    ('Landing pages', '/pages/projects', 'primary', 70, true),
    ('Portal', '/pages/links', 'footer', 10, true),
    ('Docs', '/pages/about', 'footer', 20, true),
    ('Projects', '/pages/projects', 'footer', 30, true)
) AS seed(label, url, location, sort_order, is_visible)
WHERE NOT EXISTS (
  SELECT 1
  FROM navigation_items existing
  WHERE existing.location = seed.location
    AND existing.label = seed.label
    AND existing.url = seed.url
);