-- ── Subscriptions ─────────────────────────────────────────────────────────────
-- Conformance: "Mesh, agents, ACP/MCP, and CLI" (persisted subscriptions).

CREATE TABLE subscriptions (
    community_id        UUID NOT NULL REFERENCES communities(id),
    id                  VARCHAR(255) NOT NULL,
    owner_pubkey        BYTEA NOT NULL,
    filter_kinds        JSONB,
    filter_authors      JSONB,
    filter_channel_ids  JSONB,
    filter_since        TIMESTAMPTZ,
    filter_until        TIMESTAMPTZ,
    delivery_method     delivery_method NOT NULL DEFAULT 'webhook',
    delivery_url        TEXT,
    status              subscription_status NOT NULL DEFAULT 'active',
    pause_reason        pause_reason,
    delivered_count     BIGINT NOT NULL DEFAULT 0,
    error_count         BIGINT NOT NULL DEFAULT 0,
    created_at          TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at          TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    PRIMARY KEY (community_id, id),
    FOREIGN KEY (community_id, owner_pubkey) REFERENCES users (community_id, pubkey)
);