import { DocValue, DocValueMap } from 'fyo/core/types';
import SystemSettings from 'fyo/models/SystemSettings';
import { FieldType, SelectOption } from 'schemas/types';
import { QueryFilter } from 'utils/db/types';
import { Router } from 'vue-router';
import { Doc } from './doc';

/**
 * The functions below are used for dynamic evaluation
 * and setting of field types.
 *
 * Since they are set directly on the doc, they can
 * access the doc  by using `this`.
 *
 * - `Formula`: Async function used for obtaining a computed value such as amount (rate * qty).
 * - `Default`: Regular function used to dynamically set the default value, example new Date().
 * - `Validation`: Async function that throw an error if the value is invalid.
 * - `Required`: Regular function used to decide if a value is mandatory (there are !notnul in the db).
 */
export type FormulaReturn = DocValue | DocValueMap[] | undefined | Doc[];
export type Formula = () => Promise<FormulaReturn> | FormulaReturn;
export type Default = () => DocValue;
export type Validation = (value: DocValue) => Promise<void> | void;
export type Required = () => boolean;
export type Hidden = () => boolean;
export type ReadOnly = () => boolean;
export type GetCurrency = () => string;

export type FormulaMap = Record<string, Formula | undefined>;
export type DefaultMap = Record<string, Default | undefined>;
export type ValidationMap = Record<string, Validation | undefined>;
export type RequiredMap = Record<string, Required | undefined>;
export type CurrenciesMap = Record<string, GetCurrency | undefined>;
export type HiddenMap = Record<string, Hidden | undefined>;
export type ReadOnlyMap = Record<string, ReadOnly | undefined>;
export type DependsOnMap = Record<string, string[]>;

/**
 * Should add this for hidden too
 */

export type ModelMap = Record<string, typeof Doc | undefined>;
export type DocMap = Record<string, Doc | undefined>;

export interface SinglesMap {
  SystemSettings?: SystemSettings;
  [key: string]: Doc | undefined;
}

// Static Config properties

export type FilterFunction = (doc: Doc) => QueryFilter | Promise<QueryFilter>;
export type FiltersMap = Record<string, FilterFunction>;

export type EmptyMessageFunction = (doc: Doc) => string;
export type EmptyMessageMap = Record<string, EmptyMessageFunction>;

export type ListFunction = (doc?: Doc) => string[] | SelectOption[];
export type ListsMap = Record<string, ListFunction | undefined>;

export interface Action {
  label: string;
  action: (doc: Doc, router: Router) => Promise<void> | void;
  condition?: (doc: Doc) => boolean;
  component?: {
    template?: string;
  };
}

export interface ColumnConfig {
  label: string;
  fieldtype: FieldType;
  fieldname?: string;
  size?: string;
  render?: (doc: Doc) => { template: string };
  getValue?: (doc: Doc) => string;
}

export type ListViewColumn = string | ColumnConfig;
export interface ListViewSettings {
  formRoute?: (name: string) => string;
  columns?: ListViewColumn[];
}

export interface TreeViewSettings {
  parentField: string;
  getRootLabel: () => Promise<string>;
}