import { ImageIcon } from 'lucide-react';
import {
  type CSSProperties,
  type Dispatch,
  type ReactNode,
  type RefObject,
  type SetStateAction,
} from 'react';

import { CUSTOM_EDITOR_SCENE_STYLE_PRESET } from '../../../packages/shared/src/contracts/editorScene';
import { AutoGrowTextArea } from '../common/AutoGrowTextArea';
import {
  PlatformFloatingMenu,
  PlatformFloatingMenuItem,
} from '../common/PlatformFloatingMenu';
import { PlatformStatusMessage } from '../common/PlatformStatusMessage';
import type {
  CharacterReferenceImage,
  GenerateDialogState,
  UploadTarget,
} from './ImageCanvasEditorTypes';
import { ImageCanvasGenerationImageOptionsView } from './ImageCanvasGenerationImageOptionsView';
import { calculateEditorImageGenerationPrice } from './ImageCanvasGenerationModel';
import {
  EDITOR_SCENE_CONTENT_REQUIRED_ERROR,
  EDITOR_SCENE_CUSTOM_STYLE_REQUIRED_ERROR,
} from './ImageCanvasGenerationSubmissionModel';
import { ImageCanvasReferenceSlot } from './ImageCanvasReferenceSlot';
import { useImageCanvasFloatingOptionDismiss } from './useImageCanvasFloatingOptionDismiss';

const EDITOR_SCENE_CONTENT_ERROR_ID = 'editor-scene-content-error';
const EDITOR_SCENE_CUSTOM_STYLE_ERROR_ID = 'editor-scene-custom-style-error';

type ReferenceLabelFormatter = (
  reference: CharacterReferenceImage,
  index: number,
) => string;

type ReferenceTone =
  | 'default'
  | 'spec'
  | 'icon'
  | 'ui'
  | 'quick-edit'
  | 'video'
  | 'audio';

type ImageCanvasBasicGenerationComposerViewProps = {
  dialog: GenerateDialogState;
  style: CSSProperties;
  setGenerateDialog: Dispatch<SetStateAction<GenerateDialogState | null>>;
  generationReferenceButtonRef?: RefObject<HTMLButtonElement | null>;
  isGenerationReferenceMenuOpen?: boolean;
  setIsGenerationReferenceMenuOpen?: Dispatch<SetStateAction<boolean>>;
  setIsPickingGenerationReferenceFromCanvas?: Dispatch<SetStateAction<boolean>>;
  renderEditorPortal?: (node: ReactNode) => ReactNode;
  buildPortalMenuStyle?: (
    anchor: HTMLElement | null,
    placement: 'above' | 'below',
  ) => CSSProperties;
  onRequestUpload: (target: UploadTarget) => void;
  onPickReferenceFromCanvas?: () => void;
  onToggleReferenceMenu?: () => void;
  onRememberImageModel?: (model: string) => void;
  hasPendingImageReferenceUploads?: boolean;
  onSubmit: (dialog: GenerateDialogState) => void;
  dialogLabel?: string;
  includeDimensions?: boolean;
  includeModel?: boolean;
  includeReferences?: boolean;
  promptLabel?: string;
  promptPlaceholder?: string;
  optionLabelPrefix?: string;
  dimensionRatioAriaLabelPrefix?: string;
  dimensionSizeAriaLabelPrefix?: string;
  referenceUploadTarget?: UploadTarget;
  referenceButtonIcon?: ReactNode;
  referenceButtonLabel?: string;
  referenceButtonAriaLabel?: string;
  referenceMenuLabel?: string;
  referenceSlotTone?: ReferenceTone;
  referenceSlotDisabled?: boolean;
  referenceLabelFormatter?: ReferenceLabelFormatter;
  referenceAriaLabelFormatter?: ReferenceLabelFormatter;
  referenceRemoveLabelFormatter?: ReferenceLabelFormatter;
  showReferenceAddButton?: boolean;
  panelClassName?: string;
  footerClassName?: string;
  promptClassName?: string;
  referenceSlotClassName?: string;
  submitButtonClassName?: string;
  submitLabel?: string;
  submitAriaLabel?: string;
  submittingStatusLabel?: string;
  styleControl?: ReactNode;
};

function resetFailedDialogStatus(dialog: GenerateDialogState) {
  return {
    ...dialog,
    status: dialog.status === 'failed' ? 'idle' : dialog.status,
    errorMessage: dialog.status === 'failed' ? undefined : dialog.errorMessage,
  };
}

export function ImageCanvasBasicGenerationComposerView({
  dialog,
  style,
  setGenerateDialog,
  generationReferenceButtonRef,
  isGenerationReferenceMenuOpen = false,
  setIsGenerationReferenceMenuOpen,
  setIsPickingGenerationReferenceFromCanvas,
  renderEditorPortal = (node) => node,
  buildPortalMenuStyle = () => ({}),
  onRequestUpload,
  onPickReferenceFromCanvas,
  onToggleReferenceMenu,
  onRememberImageModel = () => {},
  hasPendingImageReferenceUploads = false,
  onSubmit,
  dialogLabel,
  includeDimensions = true,
  includeModel = true,
  includeReferences = true,
  promptLabel,
  promptPlaceholder,
  optionLabelPrefix,
  dimensionRatioAriaLabelPrefix,
  dimensionSizeAriaLabelPrefix,
  referenceUploadTarget = 'generation-reference',
  referenceButtonIcon = <ImageIcon className="h-4 w-4" aria-hidden="true" />,
  referenceButtonLabel = '参考图',
  referenceButtonAriaLabel = '添加参考图',
  referenceMenuLabel = '参考图来源',
  referenceSlotTone = 'default',
  referenceSlotDisabled = false,
  referenceLabelFormatter,
  referenceAriaLabelFormatter,
  referenceRemoveLabelFormatter,
  showReferenceAddButton = true,
  panelClassName,
  footerClassName,
  promptClassName = 'image-canvas-editor__generation-prompt',
  referenceSlotClassName,
  submitButtonClassName = 'image-canvas-editor__generation-submit',
  submitLabel = '生成',
  submitAriaLabel = '生成',
  submittingStatusLabel = '生成中',
  styleControl,
}: ImageCanvasBasicGenerationComposerViewProps) {
  const references = dialog.generationReferences ?? [];
  const isQuickEdit = dialog.mode === 'quick-edit';
  const resolvedDialogLabel =
    dialogLabel ??
    optionLabelPrefix ??
    (isQuickEdit ? '快速编辑图片' : '生成图片');
  const resolvedPromptLabel =
    promptLabel ?? (isQuickEdit ? '快速编辑提示词' : '生成提示词');
  const resolvedPromptPlaceholder =
    promptPlaceholder ??
    (isQuickEdit ? '你希望素材如何修改？' : '今天想生成什么画面？');
  const resolvedOptionLabelPrefix =
    optionLabelPrefix ?? (isQuickEdit ? '快速编辑图片' : '生成图片');
  const resolvedReferenceButtonLabel = referenceButtonLabel;
  const resolvedReferenceButtonAriaLabel =
    referenceButtonAriaLabel ?? `添加${resolvedReferenceButtonLabel}`;
  const shouldIncludeReferences = isQuickEdit ? false : includeReferences;
  const shouldIncludeDimensions = includeDimensions;
  const resolvedSubmitLabel =
    isQuickEdit && submitLabel === '生成' ? '修改' : submitLabel;
  const resolvedSubmitAriaLabel =
    isQuickEdit && submitAriaLabel === '生成' ? '修改' : submitAriaLabel;
  const resolvedSubmittingStatusLabel =
    isQuickEdit && submittingStatusLabel === '生成中'
      ? '修改中'
      : submittingStatusLabel;
  const hasReferenceMenu = shouldIncludeReferences && onRequestUpload;
  const finalPanelClassName =
    panelClassName ??
    'image-canvas-editor__generation-composer image-canvas-editor__generation-composer--image';
  const finalFooterClassName =
    footerClassName ?? 'image-canvas-editor__generation-composer-footer';

  const sceneContentError =
    dialog.mode === 'scene' &&
    dialog.status === 'failed' &&
    dialog.errorMessage === EDITOR_SCENE_CONTENT_REQUIRED_ERROR
      ? dialog.errorMessage
      : null;
  const sceneCustomStyleError =
    dialog.mode === 'scene' &&
    dialog.status === 'failed' &&
    dialog.errorMessage === EDITOR_SCENE_CUSTOM_STYLE_REQUIRED_ERROR
      ? dialog.errorMessage
      : null;
  const hasSceneFieldError = Boolean(
    sceneContentError || sceneCustomStyleError,
  );

  useImageCanvasFloatingOptionDismiss({
    isOpen: isGenerationReferenceMenuOpen,
    boundaryRefs: [generationReferenceButtonRef],
    onDismiss: () => setIsGenerationReferenceMenuOpen?.(false),
  });

  return (
    <>
      <div
        className={finalPanelClassName}
        style={style}
        role="dialog"
        aria-label={resolvedDialogLabel}
        onPointerDown={(event) => event.stopPropagation()}
      >
        {shouldIncludeReferences ? (
          <div className="image-canvas-editor__reference-strip">
            {references.map((reference, index) => {
              const label =
                (referenceLabelFormatter?.(reference, index) ??
                  reference.label) ||
                `参考图${index + 1}`;
              const ariaLabel =
                referenceAriaLabelFormatter?.(reference, index) ?? label;
              const removeLabel =
                referenceRemoveLabelFormatter?.(reference, index) ??
                `删除${ariaLabel}`;

              return (
                <ImageCanvasReferenceSlot
                  key={reference.id}
                  tone={referenceSlotTone}
                  icon={<ImageIcon className="h-4 w-4" aria-hidden="true" />}
                  imageSrc={reference.src}
                  objectKey={reference.objectKey}
                  label={label}
                  ariaLabel={ariaLabel}
                  title={reference.label}
                  onRemove={() =>
                    setGenerateDialog((currentDialog) =>
                      currentDialog
                        ? {
                            ...resetFailedDialogStatus(currentDialog),
                            generationReferences: (
                              currentDialog.generationReferences ?? []
                            ).filter((item) => item.id !== reference.id),
                          }
                        : currentDialog,
                    )
                  }
                  removeLabel={removeLabel}
                  className={referenceSlotClassName}
                />
              );
            })}
            {showReferenceAddButton ? (
              <ImageCanvasReferenceSlot
                buttonRef={generationReferenceButtonRef}
                tone={referenceSlotTone}
                icon={referenceButtonIcon}
                label={resolvedReferenceButtonLabel}
                ariaLabel={resolvedReferenceButtonAriaLabel}
                disabled={
                  dialog.status === 'generating' || referenceSlotDisabled
                }
                isAdd
                onClick={() => onToggleReferenceMenu?.()}
              />
            ) : null}
          </div>
        ) : null}
        <AutoGrowTextArea
          aria-label={resolvedPromptLabel}
          aria-invalid={sceneContentError ? true : undefined}
          aria-describedby={
            sceneContentError ? EDITOR_SCENE_CONTENT_ERROR_ID : undefined
          }
          value={dialog.prompt}
          disabled={dialog.status === 'generating'}
          placeholder={resolvedPromptPlaceholder}
          className={promptClassName}
          onValueChange={(value) =>
            setGenerateDialog((currentDialog) =>
              currentDialog
                ? {
                    ...resetFailedDialogStatus(currentDialog),
                    prompt: value,
                  }
                : currentDialog,
            )
          }
        />
        {sceneContentError ? (
          <p
            id={EDITOR_SCENE_CONTENT_ERROR_ID}
            className="image-canvas-editor__scene-field-error"
            role="alert"
          >
            {sceneContentError}
          </p>
        ) : null}
        {dialog.mode === 'scene' &&
        dialog.sceneStylePreset === CUSTOM_EDITOR_SCENE_STYLE_PRESET ? (
          <AutoGrowTextArea
            aria-label="自定义画风"
            aria-invalid={sceneCustomStyleError ? true : undefined}
            aria-describedby={
              sceneCustomStyleError
                ? EDITOR_SCENE_CUSTOM_STYLE_ERROR_ID
                : undefined
            }
            value={dialog.sceneCustomStyle ?? ''}
            disabled={dialog.status === 'generating'}
            placeholder="填写自定义画风，例如：90 年代复古像素风"
            className={`${promptClassName} image-canvas-editor__scene-custom-style`}
            onValueChange={(value) =>
              setGenerateDialog((currentDialog) =>
                currentDialog
                  ? {
                      ...resetFailedDialogStatus(currentDialog),
                      sceneCustomStyle: value,
                    }
                  : currentDialog,
              )
            }
          />
        ) : null}
        {sceneCustomStyleError ? (
          <p
            id={EDITOR_SCENE_CUSTOM_STYLE_ERROR_ID}
            className="image-canvas-editor__scene-field-error"
            role="alert"
          >
            {sceneCustomStyleError}
          </p>
        ) : null}
        <div className={finalFooterClassName}>
          <ImageCanvasGenerationImageOptionsView
            dialog={dialog}
            setGenerateDialog={setGenerateDialog}
            includeDimensions={shouldIncludeDimensions}
            includeModel={includeModel}
            onRememberImageModel={onRememberImageModel}
            hasPendingImageReferenceUploads={hasPendingImageReferenceUploads}
            dimensionRatioAriaLabelPrefix={dimensionRatioAriaLabelPrefix}
            dimensionSizeAriaLabelPrefix={dimensionSizeAriaLabelPrefix}
            optionLabelPrefix={resolvedOptionLabelPrefix}
            cost={calculateEditorImageGenerationPrice({
              model: dialog.imageModel,
              imageSize: dialog.imageSize,
            })}
            submitLabel={resolvedSubmitLabel}
            submitAriaLabel={resolvedSubmitAriaLabel}
            submitButtonClassName={submitButtonClassName}
            onSubmitRequest={() => {
              if (dialog.status !== 'generating') {
                onSubmit(dialog);
              }
            }}
            styleControl={styleControl}
            renderEditorPortal={renderEditorPortal}
            buildPortalMenuStyle={buildPortalMenuStyle}
          />
        </div>
        {dialog.status === 'generating' ? (
          <PlatformStatusMessage
            tone="info"
            surface="platform"
            size="xs"
            className="image-canvas-editor__generate-status"
            role="status"
          >
            {resolvedSubmittingStatusLabel}
          </PlatformStatusMessage>
        ) : null}
        {dialog.status === 'failed' && !hasSceneFieldError ? (
          <PlatformStatusMessage
            tone="error"
            surface="platform"
            size="xs"
            className="image-canvas-editor__generate-status"
            role="alert"
          >
            {dialog.errorMessage}
          </PlatformStatusMessage>
        ) : null}
      </div>
      {hasReferenceMenu &&
      isGenerationReferenceMenuOpen &&
      generationReferenceButtonRef
        ? renderEditorPortal(
            <PlatformFloatingMenu
              className="image-canvas-editor__spec-menu image-canvas-editor__portal-menu"
              label={referenceMenuLabel}
              placement="top-start"
              style={buildPortalMenuStyle(
                generationReferenceButtonRef.current,
                'above',
              )}
            >
              <PlatformFloatingMenuItem
                onClick={() => {
                  setIsGenerationReferenceMenuOpen?.(false);
                  if (onPickReferenceFromCanvas) {
                    onPickReferenceFromCanvas();
                  } else {
                    setIsPickingGenerationReferenceFromCanvas?.(true);
                  }
                }}
              >
                从画布中选择
              </PlatformFloatingMenuItem>
              <PlatformFloatingMenuItem
                onClick={() => {
                  setIsGenerationReferenceMenuOpen?.(false);
                  setIsPickingGenerationReferenceFromCanvas?.(false);
                  onRequestUpload(referenceUploadTarget);
                }}
              >
                上传图片
              </PlatformFloatingMenuItem>
            </PlatformFloatingMenu>,
          )
        : null}
    </>
  );
}