-- pg_orrery 0.4.0 -> 0.5.0 migration
--
-- Adds multi-observer support, IOD bootstrap (seed-free fitting),
-- and covariance output for uncertainty estimation.

-- ============================================================
-- Multi-observer topocentric fitting
-- ============================================================

CREATE FUNCTION tle_from_topocentric(
    observations topocentric[], times timestamptz[],
    observers observer[], observer_ids int4[],
    seed tle DEFAULT NULL, fit_bstar boolean DEFAULT false,
    max_iter int4 DEFAULT 15,
    OUT fitted_tle tle, OUT iterations int4,
    OUT rms_final float8, OUT rms_initial float8, OUT status text
) RETURNS RECORD
    AS 'MODULE_PATHNAME', 'tle_from_topocentric_multi'
    LANGUAGE C STABLE PARALLEL SAFE;
COMMENT ON FUNCTION tle_from_topocentric(topocentric[], timestamptz[], observer[], int4[], tle, boolean, int4) IS
    'Fit a TLE from topocentric observations collected by multiple ground stations. observer_ids[i] indexes into observers[]. Requires seed TLE and >= 6 observations.';