import {
  reactive,
  provide,
  PropType,
  defineComponent,
  watch,
  ExtractPropTypes,
  UnwrapRef,
} from 'vue';
import PropTypes from '../_util/vue-types';
import defaultRenderEmpty, { RenderEmptyHandler } from './renderEmpty';
import LocaleProvider, { Locale, ANT_MARK } from '../locale-provider';
import { TransformCellTextProps } from '../table/interface';
import LocaleReceiver from '../locale-provider/LocaleReceiver';
import { withInstall } from '../_util/type';
import { RequiredMark } from '../form/Form';

export type SizeType = 'small' | 'middle' | 'large' | undefined;

export interface CSPConfig {
  nonce?: string;
}

export { RenderEmptyHandler };

export type Direction = 'ltr' | 'rtl';

export interface ConfigConsumerProps {
  getTargetContainer?: () => HTMLElement;
  getPopupContainer?: (triggerNode: HTMLElement) => HTMLElement;
  rootPrefixCls?: string;
  getPrefixCls: (suffixCls?: string, customizePrefixCls?: string) => string;
  renderEmpty: RenderEmptyHandler;
  transformCellText?: (tableProps: TransformCellTextProps) => any;
  csp?: CSPConfig;
  autoInsertSpaceInButton?: boolean;
  input?: {
    autoComplete?: string;
  };
  locale?: Locale;
  pageHeader?: {
    ghost: boolean;
  };
  componentSize?: SizeType;
  direction?: 'ltr' | 'rtl';
  space?: {
    size?: SizeType | number;
  };
  virtual?: boolean;
  dropdownMatchSelectWidth?: boolean;
}

export const configConsumerProps = [
  'getTargetContainer',
  'getPopupContainer',
  'rootPrefixCls',
  'getPrefixCls',
  'renderEmpty',
  'csp',
  'autoInsertSpaceInButton',
  'locale',
  'pageHeader',
];

export const configProviderProps = {
  getTargetContainer: {
    type: Function as PropType<() => HTMLElement>,
  },
  getPopupContainer: {
    type: Function as PropType<(triggerNode: HTMLElement) => HTMLElement>,
  },
  prefixCls: String,
  getPrefixCls: {
    type: Function as PropType<(suffixCls?: string, customizePrefixCls?: string) => string>,
  },
  renderEmpty: {
    type: Function as PropType<RenderEmptyHandler>,
  },
  transformCellText: {
    type: Function as PropType<(tableProps: TransformCellTextProps) => any>,
  },
  csp: {
    type: Object as PropType<CSPConfig>,
  },
  autoInsertSpaceInButton: PropTypes.looseBool,
  locale: {
    type: Object as PropType<Locale>,
  },
  pageHeader: {
    type: Object as PropType<{ ghost: boolean }>,
  },
  componentSize: {
    type: String as PropType<SizeType>,
  },
  direction: {
    type: String as PropType<'ltr' | 'rtl'>,
  },
  space: {
    type: Object as PropType<{ size: SizeType | number }>,
  },
  virtual: PropTypes.looseBool,
  dropdownMatchSelectWidth: PropTypes.looseBool,
  form: {
    type: Object as PropType<{ requiredMark?: RequiredMark }>,
  },
};

export type ConfigProviderProps = Partial<ExtractPropTypes<typeof configProviderProps>>;

const ConfigProvider = defineComponent({
  name: 'AConfigProvider',
  props: configProviderProps,
  setup(props, { slots }) {
    const getPrefixCls = (suffixCls?: string, customizePrefixCls?: string) => {
      const { prefixCls = 'ant' } = props;
      if (customizePrefixCls) return customizePrefixCls;
      return suffixCls ? `${prefixCls}-${suffixCls}` : prefixCls;
    };

    const renderEmptyComponent = (name?: string) => {
      const renderEmpty = (props.renderEmpty ||
        slots.renderEmpty ||
        defaultRenderEmpty) as RenderEmptyHandler;
      return renderEmpty(name);
    };

    const getPrefixClsWrapper = (suffixCls: string, customizePrefixCls?: string) => {
      const { prefixCls } = props;

      if (customizePrefixCls) return customizePrefixCls;

      const mergedPrefixCls = prefixCls || getPrefixCls('');

      return suffixCls ? `${mergedPrefixCls}-${suffixCls}` : mergedPrefixCls;
    };

    const configProvider = reactive({
      ...props,
      getPrefixCls: getPrefixClsWrapper,
      renderEmpty: renderEmptyComponent,
    });

    watch(props, () => {
      Object.assign(configProvider, props);
    });

    provide('configProvider', configProvider);

    const renderProvider = (legacyLocale: Locale) => {
      return (
        <LocaleProvider locale={props.locale || legacyLocale} ANT_MARK__={ANT_MARK}>
          {slots.default?.()}
        </LocaleProvider>
      );
    };

    return () => (
      <LocaleReceiver children={(_, __, legacyLocale) => renderProvider(legacyLocale as Locale)} />
    );
  },
});

export const defaultConfigProvider: UnwrapRef<ConfigProviderProps> = reactive({
  getPrefixCls: (suffixCls: string, customizePrefixCls?: string) => {
    if (customizePrefixCls) return customizePrefixCls;
    return suffixCls ? `ant-${suffixCls}` : 'ant';
  },
  renderEmpty: defaultRenderEmpty,
  direction: 'ltr',
});

export default withInstall(ConfigProvider);