Pagination

pagination.go

package main

import (
	"fmt"
	"sort"
)

// var listInts []int = []int{9, 4, 5, 6, 7}

var Pages = [][]string{
	{"p1", "10", "300"},
	{"p2", "13", "500"},
	{"p3", "52", "899"},
	{"p4", "10", "500"},
}

var OtherPages = [][]string{
	{"buku55", "4819401", "999999"},
	{"buku1", "4819401", "359199"},
	{"buku2", "8571831", "994193"},
	{"buku3", "4819401", "495104"},
	{"buku4", "5018414", "559141"},
	{"buku5", "5919412", "509149"},
}

func main() {
	orderBy := 2   // name, relevance, price
	orderType := 1 // asc || desc
	pageNumber := 0
	totalDataPerPage := 2
	fmt.Println("Input", OtherPages)

	sp1 := SortPage(OtherPages, orderBy, orderType)

	test1 := ReturnPage(pageNumber, totalDataPerPage, sp1)
	fmt.Println("Sorted 1", sp1)
	fmt.Println("test 1: ", test1)

	fmt.Println("-------")

	orderBy = 0   // name, relevance, price
	orderType = 1 // asc || desc
	pageNumber = 1
	totalDataPerPage = 3

	fmt.Println("Input", Pages)

	sp2 := SortPage(Pages, orderBy, orderType)

	test2 := ReturnPage(pageNumber, totalDataPerPage, sp2)
	fmt.Println("Sorted 2", sp2)
	fmt.Println("test 2: ", test2)
}

func ReturnPage(pageNumber, totalDataPerPage int, page [][]string) []string {
	listedPage := [][]string{}
	dataPerPage := []string{}
	for i := 0; i <= len(page)-1; i++ {
		dataPerPage = append(dataPerPage, page[i][0])
		if len(dataPerPage) == totalDataPerPage {
			listedPage = append(listedPage, dataPerPage)
			dataPerPage = []string{}
		}
	}
	if len(dataPerPage) > 0 {
		listedPage = append(listedPage, dataPerPage)
	}

	return listedPage[pageNumber]
}

func SortPage(arr [][]string, ob int, ot int) [][]string {
	sort.Slice(arr, func(i, j int) bool {
		if ot == 0 {
			return arr[i][ob] < arr[j][ob]
		}
		return arr[i][ob] > arr[j][ob]
	})
	return arr
}