import { useStyles } from '../styles';
import { computed, ref } from 'vue';
import merge from 'lodash/merge';
import cloneDeep from 'lodash/cloneDeep';
import {
  composePaths,
  findUISchema,
  getFirstPrimitiveProp,
  Resolve,
} from '@jsonforms/core';

/**
 * Adds styles, isFocused, appliedOptions and onChange
 */
export const useVanillaControl = <
  I extends { control: any; handleChange: any }
>(
  input: I,
  adaptTarget: (target: any) => any = (v) => v.value
) => {
  const appliedOptions = computed(() =>
    merge(
      {},
      cloneDeep(input.control.value.config),
      cloneDeep(input.control.value.uischema.options)
    )
  );

  const isFocused = ref(false);
  const onChange = (event: Event) => {
    input.handleChange(input.control.value.path, adaptTarget(event.target));
  };

  const controlWrapper = computed(() => {
    const { id, description, errors, label, visible, required } =
      input.control.value;
    return { id, description, errors, label, visible, required };
  });

  return {
    ...input,
    styles: useStyles(input.control.value.uischema),
    isFocused,
    appliedOptions,
    controlWrapper,
    onChange,
  };
};

/**
 * Adds styles and appliedOptions
 */
export const useVanillaLayout = <I extends { layout: any }>(input: I) => {
  const appliedOptions = computed(() =>
    merge(
      {},
      cloneDeep(input.layout.value.config),
      cloneDeep(input.layout.value.uischema.options)
    )
  );
  return {
    ...input,
    styles: useStyles(input.layout.value.uischema),
    appliedOptions,
  };
};

/**
 * Adds styles and appliedOptions
 */
export const useVanillaLabel = <I extends { label: any }>(input: I) => {
  const appliedOptions = computed(() =>
    merge(
      {},
      cloneDeep(input.label.value.config),
      cloneDeep(input.label.value.uischema.options)
    )
  );
  return {
    ...input,
    styles: useStyles(input.label.value.uischema),
    appliedOptions,
  };
};

/**
 * Adds styles, appliedOptions and childUiSchema
 */
export const useVanillaArrayControl = <I extends { control: any }>(
  input: I
) => {
  const appliedOptions = computed(() =>
    merge(
      {},
      cloneDeep(input.control.value.config),
      cloneDeep(input.control.value.uischema.options)
    )
  );

  const childUiSchema = computed(() =>
    findUISchema(
      input.control.value.uischemas,
      input.control.value.schema,
      input.control.value.uischema.scope,
      input.control.value.path,
      undefined,
      input.control.value.uischema,
      input.control.value.rootSchema
    )
  );

  const childLabelForIndex = (index: number) => {
    const childLabelProp =
      input.control.value.uischema.options?.childLabelProp ??
      getFirstPrimitiveProp(input.control.value.schema);
    if (!childLabelProp) {
      return `${index}`;
    }
    const labelValue = Resolve.data(
      input.control.value.data,
      composePaths(`${index}`, childLabelProp)
    );
    if (
      labelValue === undefined ||
      labelValue === null ||
      Number.isNaN(labelValue)
    ) {
      return '';
    }
    return `${labelValue}`;
  };
  return {
    ...input,
    styles: useStyles(input.control.value.uischema),
    appliedOptions,
    childUiSchema,
    childLabelForIndex,
  };
};