-- 0005_system_login_messages: official system account and first message persistence.
--
-- 777000 官方账号与登录消息推送；表结构按 telesrv domain/store 边界建模。

ALTER TABLE users
    ADD COLUMN IF NOT EXISTS verified BOOLEAN NOT NULL DEFAULT false,
    ADD COLUMN IF NOT EXISTS support  BOOLEAN NOT NULL DEFAULT false;

INSERT INTO users (id, access_hash, phone, first_name, last_name, username, country_code, verified, support)
VALUES (777000, 6599886787491911851, '42777', 'Telegram', '', 'telegram', '', true, true)
ON CONFLICT (id) DO UPDATE SET
    access_hash = EXCLUDED.access_hash,
    phone = EXCLUDED.phone,
    first_name = EXCLUDED.first_name,
    last_name = EXCLUDED.last_name,
    username = EXCLUDED.username,
    verified = EXCLUDED.verified,
    support = EXCLUDED.support,
    updated_at = now();

ALTER TABLE dialogs
    ADD COLUMN IF NOT EXISTS top_message_date INT NOT NULL DEFAULT 0;

CREATE INDEX IF NOT EXISTS dialogs_user_top_message_idx
    ON dialogs (user_id, pinned DESC, top_message_date DESC, top_message_id DESC, peer_id DESC);

CREATE TABLE IF NOT EXISTS messages (
    id             INT         GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    owner_user_id  BIGINT      NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    peer_type      VARCHAR(16) NOT NULL,
    peer_id        BIGINT      NOT NULL,
    from_user_id   BIGINT      NOT NULL REFERENCES users(id) ON DELETE RESTRICT,
    message_date   INT         NOT NULL,
    outgoing       BOOLEAN     NOT NULL DEFAULT false,
    body           TEXT        NOT NULL DEFAULT '',
    entities       JSONB       NOT NULL DEFAULT '[]'::jsonb,
    created_at     TIMESTAMPTZ NOT NULL DEFAULT now(),
    CONSTRAINT messages_peer_type_check CHECK (peer_type IN ('user'))
);

CREATE INDEX IF NOT EXISTS messages_owner_dialog_idx
    ON messages (owner_user_id, peer_type, peer_id, id DESC);
CREATE INDEX IF NOT EXISTS messages_owner_date_idx
    ON messages (owner_user_id, message_date DESC, id DESC);