big fix

src/requests/find-filter.ts

@@ -0,0 +1,79 @@
+import type { TPagination } from './pagination'
+
+import { z } from 'zod'
+import { isEqual } from '../utils'
+import { Pagination, paginationQuerySchema } from './pagination'
+import { bFieldsSchema, cFieldsSchema, fieldSchema } from '../forms'
+
+
+export const querySchema = cFieldsSchema
+	.pick({ q: true })
+	.extend(paginationQuerySchema.shape)
+	.extend({
+		sort: fieldSchema(bFieldsSchema.string.min(1).max(64), {
+			label: 'Сортировка'
+		})
+	})
+
+export type TQuery = z.infer<typeof querySchema>
+
+/**
+ * Объект для преобразования фильтра в URL.
+ */
+export type TFindFilter<T extends TQuery> = {
+	obj?: Omit<T, 'page' | 'limit' | 'sort'>
+	pagination?: TPagination
+	sort?: string
+}
+
+export class FindFilter<T extends TQuery> implements TFindFilter<T> {
+	obj?: Omit<T, 'page' | 'limit' | 'sort'>
+	pagination?: TPagination
+	sort?: string
+
+	constructor(query?: T) {
+		let queryCopy = Object.assign({}, query)
+
+		// Pagination.
+		this.setPagination(queryCopy)
+		for (const key of Object.keys(this.pagination)) {
+			if (queryCopy[key]) delete queryCopy[key]
+		}
+
+		// Sort.
+		if (queryCopy.sort) {
+			this.sort = queryCopy.sort
+			delete queryCopy.sort
+		}
+
+		// Obj.
+		this.obj = queryCopy
+	}
+
+	setPagination(pagination?: TPagination) {
+		this.pagination = new Pagination(pagination).toObject()
+	}
+
+	static getQuery <T extends TQuery = {}>(filter: TFindFilter<T>): T {
+		let query: any = {}
+		for(const key of Object.keys(filter.obj)) {
+			query[key] = filter.obj[key]
+		}
+		if (filter.pagination?.page) query.page = filter.pagination.page
+		if (filter.pagination?.limit) query.limit = filter.pagination.limit
+		if (filter.sort) query.sort = filter.sort
+		return query
+	}
+
+	toObject(): TFindFilter<T> {
+		return {
+			obj: this.obj,
+			pagination: this.pagination,
+			sort: this.sort
+		}
+	}
+
+	isEqual(filters: TFindFilter<T>[]) {
+		return isEqual([this, ...filters])
+	}
+}