-- 0006_views.sql — per-user view counts.
--
-- "Most Viewed" is a per-user notion, not a household one: what I re-read is
-- not what you re-read. Counted when an item is actually opened in a reader,
-- not when its detail page is fetched, so the number means "consumed".
--
-- Only the current view/play count and the last time are stored; a full event
-- log would grow without bound for a feature this simple.

CREATE TABLE item_views (
    user_id        INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    item_id        INTEGER NOT NULL REFERENCES media_items(id) ON DELETE CASCADE,
    views          INTEGER NOT NULL DEFAULT 0,
    last_viewed_at TEXT    NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now')),
    PRIMARY KEY (user_id, item_id)
);

CREATE INDEX idx_item_views_user ON item_views(user_id, views DESC);