45 lines
1.5 KiB
TypeScript
45 lines
1.5 KiB
TypeScript
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import { createParamDecorator, ExecutionContext } from '@nestjs/common'
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import { Request } from 'express'
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export interface PaginateQuery {
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page?: number
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limit?: number
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sortBy?: [string, string][]
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path: string
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}
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export const Paginate = createParamDecorator(
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(_data: unknown, ctx: ExecutionContext): PaginateQuery => {
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const request: Request = ctx.switchToHttp().getRequest()
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const { query } = request
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const path = request.protocol + '://' + request.get('host') + request.baseUrl + request.path
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function readParamAsArray(param: unknown): string[] {
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const result = typeof param === 'string' ? [param] : param
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if (Array.isArray(result) && result.every((value) => typeof value === 'string')) {
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return result
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}
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return []
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}
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let sortBy: [string, string][] | undefined = undefined
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if (query.sortBy) {
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const params = readParamAsArray(query.sortBy)
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for (const param of params) {
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const items = param.split(':')
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if (items.length === 2) {
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if (!sortBy) sortBy = []
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sortBy.push(items as [string, string])
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}
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}
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}
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return {
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page: query.page ? parseInt(query.page.toString(), 10) : undefined,
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limit: query.limit ? parseInt(query.limit.toString(), 10) : undefined,
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sortBy,
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path,
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}
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}
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)
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