import { defineComponent, h, onMounted, render, ref, type VNode } from 'vue';
import Modal from './Modal.vue';
import Button from './Button.vue';
import Icon from '@/components/Icon.vue';

export type ModalConfirmType = 'info' | 'success' | 'warning' | 'error' | 'confirm';

export interface ModalConfirmOptions {
  title?: string;
  content?: string | VNode;
  okText?: string;
  cancelText?: string;
  width?: string | number;
  maskClosable?: boolean;
  showCancel?: boolean;
  onOk?: () => void | Promise<void>;
  onCancel?: () => void;
}

const typeConfig: Record<ModalConfirmType, { icon: string; color: string }> = {
  info: { icon: 'icon-info-fill', color: '#1677ff' },
  success: { icon: 'icon-round-check-fill', color: '#00c49f' },
  warning: { icon: 'icon-warn-fill', color: '#ff8b2c' },
  error: { icon: 'icon-round-close-fill', color: '#ff4d4f' },
  confirm: { icon: 'icon-question-fill', color: '#ff8b2c' },
};

const ModalHolder = defineComponent({
  name: 'ModalConfirmHolder',
  props: {
    type: { type: String, required: true },
    options: { type: Object, required: true },
    onDestroy: { type: Function, required: true },
  },
  setup(props) {
    const show = ref(false);
    const okLoading = ref(false);
    const opt = props.options as ModalConfirmOptions;
    const cfg = typeConfig[props.type as ModalConfirmType];

    onMounted(() => {
      show.value = true;
    });

    function destroy() {
      (props.onDestroy as () => void)();
    }

    function handleClose() {
      show.value = false;
    }

    function handleUpdateShow(value: boolean) {
      show.value = value;
      if (!value) {
        setTimeout(destroy, 200);
      }
    }

    function handleOk() {
      const result = opt.onOk?.();
      if (result && typeof (result as Promise<void>).then === 'function') {
        okLoading.value = true;
        Promise.resolve(result)
          .then(handleClose)
          .catch(() => {})
          .finally(() => {
            okLoading.value = false;
          });
      } else {
        handleClose();
      }
    }

    function handleCancel() {
      opt.onCancel?.();
      handleClose();
    }

    return () =>
      h(
        Modal,
        {
          show: show.value,
          'onUpdate:show': handleUpdateShow,
          title: opt.title,
          width: opt.width,
          maskClosable: opt.maskClosable,
        },
        {
          default: () =>
            h('div', { class: 'flex items-start gap-3' }, [
              h(Icon, { name: cfg.icon, size: '1.5rem', color: cfg.color, class: 'flex-shrink-0 mt-0.5' }),
              opt.content
                ? h(
                    'div',
                    { class: 'flex-1 text-sm whitespace-pre-wrap break-words' },
                    typeof opt.content === 'string' ? opt.content : opt.content,
                  )
                : null,
            ]),
          footer: () =>
            h('div', { class: 'flex flex-row justify-end items-center gap-2' }, [
              opt.showCancel
                ? h(Button, { onClick: handleCancel }, { default: () => opt.cancelText ?? '取消' })
                : null,
              h(
                Button,
                { type: 'primary', loading: okLoading.value, onClick: handleOk },
                { default: () => opt.okText ?? '确定' },
              ),
            ]),
        },
      );
  },
});

function openConfirm(type: ModalConfirmType, options: ModalConfirmOptions = {}) {
  const container = document.createElement('div');
  document.body.appendChild(container);

  const destroy = () => {
    render(null, container);
    container.remove();
  };

  const vm = h(ModalHolder, { type, options, onDestroy: destroy });
  render(vm, container);
}

export const ModalApi = {
  info: (options?: ModalConfirmOptions) => openConfirm('info', { showCancel: false, ...options }),
  success: (options?: ModalConfirmOptions) => openConfirm('success', { showCancel: false, ...options }),
  warning: (options?: ModalConfirmOptions) => openConfirm('warning', { showCancel: false, ...options }),
  error: (options?: ModalConfirmOptions) => openConfirm('error', { showCancel: false, ...options }),
  confirm: (options?: ModalConfirmOptions) => openConfirm('confirm', { showCancel: true, ...options }),
};