-- Réactions visiteurs (cookie anti-doublon)
CREATE TABLE article_reactions (
    id            SERIAL PRIMARY KEY,
    article_uuid  TEXT    NOT NULL,
    reaction_type TEXT    NOT NULL CHECK (reaction_type IN ('useful', 'important', 'interesting')),
    visitor_hash  TEXT    NOT NULL,
    created_at    TIMESTAMP NOT NULL DEFAULT NOW(),
    UNIQUE (article_uuid, reaction_type, visitor_hash)
);
CREATE INDEX ON article_reactions (article_uuid);

-- Commentaires avec vérification par email
CREATE TABLE comments (
    id                SERIAL  PRIMARY KEY,
    article_uuid      TEXT    NOT NULL,
    author_name       TEXT    NOT NULL,
    author_email      TEXT    NOT NULL,
    content           TEXT    NOT NULL CHECK (LENGTH(content) <= 2000),
    verify_token      TEXT,
    verification_code TEXT,
    verify_attempts   INTEGER NOT NULL DEFAULT 0,
    verified          BOOLEAN NOT NULL DEFAULT FALSE,
    published         BOOLEAN NOT NULL DEFAULT FALSE,
    created_at        TIMESTAMP NOT NULL DEFAULT NOW(),
    ip_address        TEXT,
    user_agent        TEXT
);
CREATE INDEX ON comments (article_uuid, verified, published);
CREATE INDEX ON comments (verify_token)
    WHERE verified = FALSE AND verify_token IS NOT NULL;