// ─── Equipment Helper Functions ─────────────────────────

import type { EquipmentType, EquipmentSlot, EquipmentCategory } from './types';
import { EQUIPMENT_TYPES } from './index';

export function getEquipmentType(id: string): EquipmentType | undefined {
  return EQUIPMENT_TYPES[id];
}

export function getEquipmentByCategory(category: EquipmentCategory): EquipmentType[] {
  return Object.values(EQUIPMENT_TYPES).filter(e => e.category === category) as EquipmentType[];
}

export function getEquipmentBySlot(slot: EquipmentSlot): EquipmentType[] {
  return Object.values(EQUIPMENT_TYPES).filter(e => e.slot === slot) as EquipmentType[];
}

export function getAllEquipmentTypes(): EquipmentType[] {
  return Object.values(EQUIPMENT_TYPES) as EquipmentType[];
}

// Get valid slots for a category
// Note: For 2-handed weapons, use getValidSlotsForEquipmentType instead
export function getValidSlotsForCategory(category: EquipmentCategory): EquipmentSlot[] {
  switch (category) {
    case 'caster':
    case 'catalyst':
    case 'sword':
      return ['mainHand'];
    case 'shield':
      return ['offHand'];
    case 'head':
      return ['head'];
    case 'body':
      return ['body'];
    case 'hands':
      return ['hands'];
    case 'feet':
      return ['feet'];
    case 'accessory':
      return ['accessory1', 'accessory2'];
    default:
      return [];
  }
}

// Get valid slots for a specific equipment type (considers 2-handed weapons)
export function getValidSlotsForEquipmentType(equipType: EquipmentType): EquipmentSlot[] {
  // 2-handed weapons occupy both main hand and offhand
  if (equipType.twoHanded) {
    return ['mainHand', 'offHand'];
  }
  
  // Otherwise use category-based slots
  return getValidSlotsForCategory(equipType.category);
}

// Check if an equipment type can be equipped in a specific slot
export function canEquipInSlot(equipmentType: EquipmentType, slot: EquipmentSlot): boolean {
  const validSlots = getValidSlotsForEquipmentType(equipmentType);
  return validSlots.includes(slot);
}