"use client";

/**
 * Figma: Overlay / Modal / Card (24973:1852) with Has Text off and Has Steps
 * on. A value opens a card of meaning + signals rows; each row opens that
 * field's Step Modal (23746:49780) with Generate draft on an empty field.
 */

import { memo, useCallback, useEffect, useState, type ReactNode } from "react";
import Create from "../../../components/modals/Create";
import { useMessages } from "../../../contexts/MessagesContext";
import type { ModalHeaderMenuItem } from "../../../components/modals/ModalHeader/ModalHeader.types";
import type { CoreValueDetailEntry } from "../types";
import ModalTextAreaField from "./ModalTextAreaField";
import { ValueDialogStepCard } from "./ValueDialogStepCard";

export type ValueDialogSession = "pending" | "editing";
export type ValueDialogStep = "meaning" | "signals";

export type ValueDialogProps = {
  isOpen: boolean;
  valueLabel: string;
  session: ValueDialogSession | null;
  draft: CoreValueDetailEntry;
  onDraftChange: (_next: CoreValueDetailEntry) => void;
  generateDraft?: CoreValueDetailEntry;
  onClose: () => void;
  onConfirm: () => void;
  onDeselect?: () => void;
  nextButtonDisabled?: boolean;
  kebabTriggerAriaLabel?: string;
  kebabMenuAriaLabel?: string;
  kebabMenuItems?: ModalHeaderMenuItem[];
  ariaLabel?: string;
  /** Customized field-blocks body. Replaces the meaning/signals step cards. */
  children?: ReactNode;
};

function ValueDialogComponent({
  isOpen,
  valueLabel,
  session,
  draft,
  onDraftChange,
  generateDraft,
  onClose,
  onConfirm,
  onDeselect,
  nextButtonDisabled = false,
  kebabTriggerAriaLabel,
  kebabMenuAriaLabel,
  kebabMenuItems,
  ariaLabel,
  children,
}: ValueDialogProps) {
  const m = useMessages();
  const t = m.create.customRule.coreValues.detailModal;
  const draftField = m.create.draftField;
  const [activeStep, setActiveStep] = useState<ValueDialogStep | null>(null);

  useEffect(() => {
    if (!isOpen) {
      setActiveStep(null);
    }
  }, [isOpen]);

  const handleRequestClose = useCallback(() => {
    if (activeStep != null) {
      setActiveStep(null);
      return;
    }
    onClose();
  }, [activeStep, onClose]);

  const meaningDone = draft.meaning.trim().length > 0;
  const signalsDone = draft.signals.trim().length > 0;
  const useCustomBody = Boolean(children);
  const showSteps = !useCustomBody && activeStep == null;
  const editing = session === "editing";
  const primaryLabel = editing ? t.save : t.addToRule;

  const stepTitle =
    activeStep === "meaning"
      ? t.meaningStepTitle.replace("{value}", valueLabel)
      : activeStep === "signals"
        ? t.signalsLabel
        : valueLabel;
  const stepDescription =
    activeStep === "meaning"
      ? t.meaningDescription
      : activeStep === "signals"
        ? t.signalsStepDescription.replace("{value}", valueLabel)
        : undefined;

  return (
    <Create
      isOpen={isOpen}
      onClose={handleRequestClose}
      title={stepTitle}
      description={activeStep != null ? stepDescription : undefined}
      showBackButton={false}
      showCancelButton
      showNextButton
      showRemoveButton={editing && activeStep == null}
      onCancel={handleRequestClose}
      onNext={onConfirm}
      onRemove={onDeselect}
      cancelButtonText={t.cancel}
      nextButtonText={primaryLabel}
      removeButtonText={t.deselect}
      nextButtonDisabled={nextButtonDisabled}
      stepper={false}
      backdropVariant="blurredYellow"
      kebabTriggerAriaLabel={kebabTriggerAriaLabel}
      kebabMenuAriaLabel={kebabMenuAriaLabel}
      kebabMenuItems={
        activeStep == null && kebabMenuItems && kebabMenuItems.length > 0
          ? kebabMenuItems
          : undefined
      }
      ariaLabel={ariaLabel || valueLabel}
    >
      {useCustomBody ? (
        children
      ) : showSteps ? (
        <div className="flex w-full flex-col gap-[8px]">
          <ValueDialogStepCard
            stepNumber={1}
            stepBadgeLabel={t.stepBadge}
            title={t.meaningLabel}
            description={
              meaningDone ? draft.meaning : t.meaningDescription
            }
            done={meaningDone}
            onClick={() => setActiveStep("meaning")}
          />
          <ValueDialogStepCard
            stepNumber={2}
            stepBadgeLabel={t.stepBadge}
            title={t.signalsLabel}
            description={
              signalsDone ? draft.signals : t.signalsDescription
            }
            done={signalsDone}
            onClick={() => setActiveStep("signals")}
          />
        </div>
      ) : activeStep === "meaning" ? (
        <ModalTextAreaField
          hideLabel
          label={t.meaningLabel}
          value={draft.meaning}
          onChange={(meaning) => onDraftChange({ ...draft, meaning })}
          placeholder={t.placeholder}
          generateDraftText={generateDraft?.meaning}
          generateDraftLabel={draftField.generateDraft}
          generateDraftHint={t.generateDraftHint}
          filledHint={t.filledHint}
          autoFocus
        />
      ) : (
        <ModalTextAreaField
          hideLabel
          label={t.signalsLabel}
          value={draft.signals}
          onChange={(signals) => onDraftChange({ ...draft, signals })}
          placeholder={t.placeholder}
          generateDraftText={generateDraft?.signals}
          generateDraftLabel={draftField.generateDraft}
          generateDraftHint={t.generateDraftHint}
          filledHint={t.filledHint}
          autoFocus
        />
      )}
    </Create>
  );
}

ValueDialogComponent.displayName = "ValueDialog";

export const ValueDialog = memo(ValueDialogComponent);