bps-rw/Controllers/RincianTargetRumahMemilahController.cs

using Microsoft.AspNetCore.Mvc;
using System.Linq;

namespace BpsRwApp.Controllers
{
    public class RincianTargetRumahMemilahController : AppControllerBase
    {
        public IActionResult Index()
        {
            return View();
        }

        [HttpGet]
        public IActionResult Table()
        {
            var wilayahDefinitions = new[]
            {
                new
                {
                    Name = "Jakarta Pusat",
                    Kelurahan = new[]
                    {
                        "Cempaka Putih Barat",
                        "Cempaka Putih Timur",
                        "Johar Baru",
                        "Galur",
                        "Kebon Melati",
                        "Kebon Kacang",
                        "Petamburan",
                        "Kampung Bali",
                        "Bendungan Hilir",
                        "Karet Tengsin",
                    }
                },
                new
                {
                    Name = "Jakarta Barat",
                    Kelurahan = new[]
                    {
                        "Tomang",
                        "Kedoya Selatan",
                        "Duri Kepa",
                        "Palmerah",
                        "Kebon Jeruk",
                        "Kembangan Selatan",
                        "Kembangan Utara",
                        "Cengkareng Barat",
                        "Tegal Alur",
                        "Kamal",
                    }
                },
                new
                {
                    Name = "Jakarta Selatan",
                    Kelurahan = new[]
                    {
                        "Cipete Selatan",
                        "Cipete Utara",
                        "Pondok Pinang",
                        "Pondok Indah",
                        "Bangka",
                        "Tegal Parang",
                        "Ragunan",
                        "Cipedak",
                        "Pesanggrahan",
                        "Ulujami",
                    }
                },
                new
                {
                    Name = "Jakarta Timur",
                    Kelurahan = new[]
                    {
                        "Cakung Timur",
                        "Penggilingan",
                        "Pulo Gebang",
                        "Rawa Terate",
                        "Duren Sawit",
                        "Pondok Kelapa",
                        "Klender",
                        "Cipinang Melayu",
                        "Halim Perdanakusuma",
                        "Matraman",
                    }
                },
                new
                {
                    Name = "Jakarta Utara",
                    Kelurahan = new[]
                    {
                        "Kelapa Gading Timur",
                        "Pegangsaan Dua",
                        "Sunter Agung",
                        "Sunter Jaya",
                        "Tanjung Priok",
                        "Pademangan Barat",
                        "Ancol",
                        "Penjaringan",
                        "Pluit",
                        "Marunda",
                    }
                },
            };

            var wilayahData = wilayahDefinitions
                .Select((definition, wilayahIndex) =>
                {
                    var targets = definition.Kelurahan
                        .Select((kelurahan, targetIndex) =>
                        {
                            var baseline = 35 + wilayahIndex * 5 + targetIndex * 3;
                            return new TargetRow(
                                kelurahan,
                                baseline,
                                baseline + 4,
                                baseline + 12);
                        })
                        .ToArray();

                    var totalJumlahPjlp = targets.Sum(target => target.JumlahPjlp);
                    var totalTargetBulan = targets.Sum(target => target.TargetBulan);
                    var totalTargetDelapanBulan = targets.Sum(target => target.TargetDelapanBulan);

                    return new WilayahRow(
                        No: wilayahIndex + 1,
                        Wilayah: definition.Name,
                        TotalJumlahPjlp: totalJumlahPjlp,
                        TotalTargetBulan: totalTargetBulan,
                        TotalTargetDelapanBulan: totalTargetDelapanBulan,
                        Targets: targets);
                })
                .ToArray();

            var data = wilayahData
                .SelectMany(region => region.Targets.Select((target, index) => new
                {
                    no = region.No,
                    row_number = $"{region.No}.{index + 1}",
                    wilayah = region.Wilayah,
                    kelurahan = target.Kelurahan,
                    jumlah_pjlp = target.JumlahPjlp,
                    target_bulan = target.TargetBulan,
                    target_8_bulan = target.TargetDelapanBulan,
                    total_jumlah_pjlp = region.TotalJumlahPjlp,
                    total_target_bulan = region.TotalTargetBulan,
                    total_target_8_bulan = region.TotalTargetDelapanBulan
                }))
                .ToArray();

            return Json(new { data });
        }

        private sealed record WilayahRow(int No, string Wilayah, int TotalJumlahPjlp, int TotalTargetBulan, int TotalTargetDelapanBulan, TargetRow[] Targets);

        private sealed record TargetRow(string Kelurahan, int JumlahPjlp, int TargetBulan, int TargetDelapanBulan);

    }
}