CREATE TABLE IF NOT EXISTS internet_connection_change_cases (
    id BIGSERIAL PRIMARY KEY,
    connection_id INTEGER NOT NULL REFERENCES internet_connections_connections(id) ON DELETE CASCADE,
    source_type VARCHAR(80) NOT NULL,
    source_key VARCHAR(255) NOT NULL,
    source_label TEXT,
    source_url TEXT,
    sag_id INTEGER REFERENCES sag_sager(id) ON DELETE SET NULL,
    changes JSONB NOT NULL DEFAULT '{}'::jsonb,
    last_error TEXT,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    UNIQUE(connection_id, source_type, source_key)
);

CREATE INDEX IF NOT EXISTS idx_internet_change_cases_sag
    ON internet_connection_change_cases(sag_id);