import { useState } from 'react';
import { RotateCcw, Save, X } from 'lucide-react';
import { CUT_FAMILY_RULES, type CutFamilyKey } from '../analytics/cutting';
import { editableProductTypeOptions, getProductTypeConfig, resolveProductType, type ProductTypeKey } from '../productClassification';
import type { CutProductOverride } from '../types';
import ProductTypeBadge from './ProductTypeBadge';

type SkuPlanningModalProduct = {
  id: string;
  name: string;
  color?: string;
  size?: string;
};

type SkuPlanningModalProps = {
  product: SkuPlanningModalProduct;
  override?: CutProductOverride;
  isSaving?: boolean;
  onClose: () => void;
  onSave: (override: CutProductOverride | null) => void | Promise<void>;
};

const familyOptions: Array<{ value: CutFamilyKey | ''; label: string }> = [
  { value: '', label: 'Auto' },
  ...CUT_FAMILY_RULES.map(rule => ({ value: rule.key, label: `${rule.materialLabel} · ${rule.label}` })),
  { value: 'OUTROS', label: 'Sem regra' }
];

const buildOverride = ({
  familyKey,
  color,
  size,
  productType,
  planningNotes
}: Required<Pick<CutProductOverride, 'color' | 'size' | 'planningNotes'>> & {
  familyKey: CutFamilyKey | '';
  productType: ProductTypeKey | '';
}): CutProductOverride | null => {
  const next: CutProductOverride = {
    familyKey,
    color: color.trim(),
    size: size.trim().toUpperCase(),
    productType,
    planningNotes: planningNotes.trim()
  };

  if (!next.familyKey && !next.color && !next.size && !next.productType && !next.planningNotes) {
    return null;
  }

  return next;
};

const SkuPlanningModal = ({ product, override, isSaving = false, onClose, onSave }: SkuPlanningModalProps) => {
  const [familyKey, setFamilyKey] = useState<CutFamilyKey | ''>(override?.familyKey || '');
  const [color, setColor] = useState(override?.color || '');
  const [size, setSize] = useState(override?.size || '');
  const [productType, setProductType] = useState<ProductTypeKey | ''>(override?.productType || '');
  const [planningNotes, setPlanningNotes] = useState(override?.planningNotes || '');

  const resolvedType = resolveProductType(product.name, { productType });
  const resolvedConfig = getProductTypeConfig(resolvedType);

  const handleSave = () => {
    void onSave(buildOverride({ familyKey, color, size, productType, planningNotes }));
  };

  const handleClear = () => {
    void onSave(null);
  };

  return (
    <div
      className="fixed inset-0 z-50 flex h-dvh items-center justify-center overflow-y-auto bg-zinc-950/80 p-4 backdrop-blur-md dark:bg-black/75"
      role="dialog"
      aria-modal="true"
      aria-label={`Editar planejamento do SKU ${product.id}`}
      onClick={onClose}
    >
      <div
        className="w-full max-w-2xl rounded-2xl border border-dark-border bg-dark-card shadow-2xl"
        onClick={(event) => event.stopPropagation()}
      >
        <div className="flex items-start justify-between gap-4 border-b border-dark-border p-5">
          <div className="min-w-0">
            <div className="font-mono text-[10px] font-bold uppercase tracking-widest text-dark-muted">SKU #{product.id}</div>
            <h2 className="mt-1 truncate text-lg font-bold text-dark-text" title={product.name}>{product.name}</h2>
            <div className="mt-2 flex flex-wrap items-center gap-2">
              <ProductTypeBadge type={resolvedType} />
              <span className="text-xs font-semibold text-dark-muted">{resolvedConfig.description}</span>
            </div>
          </div>
          <button
            type="button"
            onClick={onClose}
            className="inline-flex h-9 w-9 shrink-0 items-center justify-center rounded-xl border border-dark-border bg-dark-input text-dark-muted transition-colors hover:border-brand-primary hover:text-dark-text cursor-pointer"
            title="Fechar"
            aria-label="Fechar"
          >
            <X className="h-4 w-4" />
          </button>
        </div>

        <div className="grid grid-cols-1 gap-4 p-5 md:grid-cols-2">
          <label className="space-y-2">
            <span className="text-xs font-bold uppercase tracking-widest text-dark-muted">Tipo de produto</span>
            <select
              value={productType}
              onChange={(event) => setProductType(event.target.value as ProductTypeKey | '')}
              className="h-10 w-full rounded-lg border border-dark-border bg-dark-input px-3 text-sm font-bold text-dark-text outline-none transition-colors focus:border-brand-primary cursor-pointer"
            >
              <option value="">Auto ({getProductTypeConfig(resolveProductType(product.name)).label})</option>
              {editableProductTypeOptions.map(option => (
                <option key={option.value} value={option.value}>{option.label}</option>
              ))}
            </select>
          </label>

          <label className="space-y-2">
            <span className="text-xs font-bold uppercase tracking-widest text-dark-muted">Família de corte</span>
            <select
              value={familyKey}
              onChange={(event) => setFamilyKey(event.target.value as CutFamilyKey | '')}
              className="h-10 w-full rounded-lg border border-dark-border bg-dark-input px-3 text-sm font-bold text-dark-text outline-none transition-colors focus:border-brand-primary cursor-pointer"
            >
              {familyOptions.map(option => (
                <option key={option.value || 'auto'} value={option.value}>{option.label}</option>
              ))}
            </select>
          </label>

          <label className="space-y-2">
            <span className="text-xs font-bold uppercase tracking-widest text-dark-muted">Cor</span>
            <input
              type="text"
              value={color}
              onChange={(event) => setColor(event.target.value)}
              placeholder={product.color || 'Auto pelo nome'}
              className="h-10 w-full rounded-lg border border-dark-border bg-dark-input px-3 text-sm font-bold text-dark-text outline-none transition-colors placeholder:text-dark-muted focus:border-brand-primary"
            />
          </label>

          <label className="space-y-2">
            <span className="text-xs font-bold uppercase tracking-widest text-dark-muted">Tamanho</span>
            <input
              type="text"
              value={size}
              onChange={(event) => setSize(event.target.value)}
              placeholder={product.size || 'Auto pelo nome'}
              className="h-10 w-full rounded-lg border border-dark-border bg-dark-input px-3 text-sm font-bold uppercase text-dark-text outline-none transition-colors placeholder:normal-case placeholder:text-dark-muted focus:border-brand-primary"
            />
          </label>

          <label className="space-y-2 md:col-span-2">
            <span className="text-xs font-bold uppercase tracking-widest text-dark-muted">Notas de planejamento</span>
            <textarea
              value={planningNotes}
              onChange={(event) => setPlanningNotes(event.target.value)}
              rows={3}
              placeholder="Ex.: revisar consumo, material usado, regra temporária..."
              className="w-full resize-none rounded-lg border border-dark-border bg-dark-input px-3 py-2 text-sm font-semibold text-dark-text outline-none transition-colors placeholder:text-dark-muted focus:border-brand-primary"
            />
          </label>
        </div>

        <div className="flex flex-col gap-2 border-t border-dark-border p-5 sm:flex-row sm:items-center sm:justify-between">
          <button
            type="button"
            onClick={handleClear}
            disabled={isSaving}
            className="inline-flex items-center justify-center gap-2 rounded-xl border border-dark-border bg-dark-input px-4 py-2.5 text-sm font-bold text-dark-muted transition-colors hover:border-red-400/40 hover:text-red-300 disabled:cursor-not-allowed disabled:opacity-50 cursor-pointer"
          >
            <RotateCcw className="h-4 w-4" />
            Limpar override
          </button>
          <div className="flex gap-2 sm:justify-end">
            <button
              type="button"
              onClick={onClose}
              disabled={isSaving}
              className="inline-flex flex-1 items-center justify-center rounded-xl border border-dark-border bg-dark-input px-4 py-2.5 text-sm font-bold text-dark-text transition-colors hover:border-brand-primary disabled:cursor-not-allowed disabled:opacity-50 sm:flex-none cursor-pointer"
            >
              Cancelar
            </button>
            <button
              type="button"
              onClick={handleSave}
              disabled={isSaving}
              className="inline-flex flex-1 items-center justify-center gap-2 rounded-xl border border-brand-primary/30 bg-brand-primary/15 px-4 py-2.5 text-sm font-bold text-brand-primary transition-colors hover:border-brand-primary disabled:cursor-not-allowed disabled:opacity-50 sm:flex-none cursor-pointer"
            >
              <Save className="h-4 w-4" />
              {isSaving ? 'Salvando' : 'Salvar'}
            </button>
          </div>
        </div>
      </div>
    </div>
  );
};

export default SkuPlanningModal;