-- Post engagement surface: unique views, 1-5 ratings, and post messages.
-- Applied by rustelo_server::migrations::MigrationRunner on PostgreSQL connect.
-- Identity is an opaque visitor_id (first-party `vid` cookie); no raw IP/UA is stored.

CREATE TABLE IF NOT EXISTS post_view (
  post_id      TEXT NOT NULL,
  lang         TEXT NOT NULL,
  visitor_id   TEXT NOT NULL,
  first_seen   TIMESTAMPTZ NOT NULL,
  PRIMARY KEY (post_id, lang, visitor_id)
);

CREATE TABLE IF NOT EXISTS post_rating (
  post_id      TEXT NOT NULL,
  visitor_id   TEXT NOT NULL,
  value        INTEGER NOT NULL CHECK (value BETWEEN 1 AND 5),
  updated_at   TIMESTAMPTZ NOT NULL,
  PRIMARY KEY (post_id, visitor_id)
);

CREATE TABLE IF NOT EXISTS post_message (
  id           TEXT PRIMARY KEY,
  post_id      TEXT NOT NULL,
  post_title   TEXT NOT NULL,
  lang         TEXT NOT NULL,
  name         TEXT NOT NULL,
  email        TEXT,
  body         TEXT NOT NULL,
  status       TEXT NOT NULL DEFAULT 'new',   -- new | approved | spam  (approved => public later)
  visitor_id   TEXT,
  created_at   TIMESTAMPTZ NOT NULL
);

CREATE INDEX IF NOT EXISTS idx_post_view_post    ON post_view(post_id, lang);
CREATE INDEX IF NOT EXISTS idx_post_message_post ON post_message(post_id, status);