import type {
    LoadCombination,
    LimitState,
    GeometryCheck,
    DesignCheck,
} from '../types/connection';

export function performDesignChecks(
    loadCombinations: LoadCombination[],
    limitStates: LimitState[],
    geometryChecks: GeometryCheck[]
): DesignCheck {
    // Find maximum factored load
    const maxPu = Math.max(...loadCombinations.map(lc => lc.pu), 0);

    // Find controlling (minimum) design strength
    const applicableLimitStates = limitStates.filter(ls => ls.applicable);
    const minPhiRn = applicableLimitStates.length > 0
        ? Math.min(...applicableLimitStates.map(ls => ls.phiRn))
        : Infinity;

    // Calculate connection strength ratio (demand/capacity)
    const connectionStrengthRatio = minPhiRn > 0 ? maxPu / minPhiRn : 0;

    // Design check ratio (for future use)
    const designCheckRatio = 0.0;

    // Check if all geometry constraints pass
    const geometricConstraintsCheck = geometryChecks.every(check => check.status === 'OK') ? 'OK' : 'NG';

    // Update load combinations with pass/fail status
    loadCombinations.forEach(lc => {
        lc.passes = lc.pu <= minPhiRn;
    });

    return {
        connectionStrengthRatio,
        designCheckRatio,
        geometricConstraintsCheck,
    };
}