import fs from 'fs'
import siteomatQuery from '@helpers/siteomat-query'

const { Filter, orderBy, reduce } = siteomatQuery

/**
 *  handle pages
 *
 *  @author Björn Hase
 *  @license hhttps://www.gnu.org/licenses/gpl-3.0.en.html GPL-3
 *  @link https://gitea.node001.net/HerrHase/tellme-bot.git
 *
 */

export default async function(fastify, opts)
{

    /**
     *
     *
     *  @param  {object} request
     *  @param  {object} response
     *
     */
    fastify.get('/v1/:name', async function (request, response) {

		// create file path
        const filePath = process.env.APP_PUBLIC_PATH + '/' + request.params.name + '.json'

		// if file not exists
        if (!fs.existsSync(filePath)) {
            return response
                .code(404)
                .send()
        }

		// loading data
		const data = JSON.parse(fs.readFileSync(filePath, 'utf8'))

		// results
		let results = []

		// filter
		if (request.query.filter) {
			const filter = new Filter(request.query.filter)

			data.forEach((single) => {
				if (filter.validate(single)) {
					results.push(single)
				}
			})

		} else {
			results = data
		}

		// getting offset
		let offset = !request.query.offset ? 0 : request.query.offset

		// getting limit
		let limit = !request.query.limit ? results.length : request.query.limit

		// offset and limit
		results = results.slice(offset, limit)

		response
			.header('Content-Type', 'application/json; charset=utf-8')
		    .code(200)
		    .send(results)
    })
}