create table if not exists dealing_ranges (
    id bigserial primary key,
    instrument_id bigint not null references instruments(id),
    timeframe text not null,
    high numeric(20,10) not null,
    low numeric(20,10) not null,
    equilibrium numeric(20,10) not null,
    high_swing_id bigint references swings(id),
    low_swing_id bigint references swings(id),
    state text not null default 'valid',
    ts_start timestamptz not null,
    ts_end timestamptz,
    meta jsonb not null default '{}'::jsonb,
    created_at timestamptz not null default now(),
    updated_at timestamptz not null default now()
);

create index if not exists idx_dealing_ranges_instr_tf_start_desc
on dealing_ranges (instrument_id, timeframe, ts_start desc);

create index if not exists idx_dealing_ranges_instr_tf_state_start_desc
on dealing_ranges (instrument_id, timeframe, state, ts_start desc);