export function calculateRowTotalPower(
  quantity: number,
  powerPerUnit: number,
  simultaneityFactor: number
): number {
  return quantity * powerPerUnit * simultaneityFactor;
}

export function calculateCircuitTotalPower(
  rows: Array<{ quantity: number; powerPerUnit: number; simultaneityFactor: number }>
): number {
  return rows.reduce(
    (sum, row) => sum + calculateRowTotalPower(row.quantity, row.powerPerUnit, row.simultaneityFactor),
    0
  );
}

export function calculateSectionTotalPower(
  circuits: Array<{ circuitTotalPower: number }>
): number {
  return circuits.reduce(
    (sum, circuit) => sum + circuit.circuitTotalPower,
    0
  );
}

export function calculateDistributionBoardTotalPower(
  sections: Array<{ sectionTotalPower: number }>
): number {
  return sections.reduce(
    (sum, section) => sum + section.sectionTotalPower,
    0
  );
}

export function applyDistributionBoardSimultaneityFactor(
  totalPower: number,
  simultaneityFactor: number
): number {
  if (
    !Number.isFinite(simultaneityFactor) ||
    simultaneityFactor < 0 ||
    simultaneityFactor > 1
  ) {
    throw new Error(
      "Distribution-board simultaneity factor must be between zero and one."
    );
  }
  return totalPower * simultaneityFactor;
}