<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Models\Siswa;
use App\Models\Kelas;
use Illuminate\Support\Facades\Input;
use Maatwebsite\Excel\Facades\Excel;
use App\Exports\SiswaExport;
use App\Imports\SiswaImport;
use App\Models\Tabungan;
use App\Models\Transaksi;
use App\Models\Tagihan;

class SiswaController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index(Request $request) 
    {
        $q = $request->get('q');
        if($q == null){
            $siswa = Siswa::orderBy('created_at','desc')->paginate(15);
        }else{
            $siswa = Siswa::where('nama','like','%'.$q.'%')->orderBy('created_at','desc')->paginate(15);
        }
        return view('siswa.index', [
            'siswa' => $siswa->appends(Input::except('page'))
        ]);
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
        $kelas = Kelas::all();
        return view('siswa.form', ['kelas' => $kelas]);
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        $request->validate([
            'kelas_id' => 'required|numeric',
            'nama' => 'required|max:255',
            'tempat_lahir' => 'nullable|max:255',
            'tanggal_lahir' => 'nullable|date',
            'jenis_kelamin' => 'nullable|in:L,P',
            'alamat' => 'nullable',
            'nama_wali' => 'nullable|max:255',
            'telp_wali' => 'nullable|numeric',
            'is_yatim' => 'nullable|boolean',
        ]);

        $siswa = Siswa::make($request->input());

        if($request->is_yatim != null){
            $siswa->is_yatim = 1;
        }else{
            $siswa->is_yatim = 0;
        }

        if($siswa->save()){
            return redirect()->route('siswa.index')->with([
                'type' => 'success',
                'msg' => 'Siswa ditambahkan'
            ]);
        }else{
            return redirect()->route('siswa.index')->with([
                'type' => 'danger',
                'msg' => 'Err.., Terjadi Kesalahan'
            ]);
        }
    }

    /**
     * Display the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function show(Siswa $siswa)
    {
        $input = Tabungan::where('tipe','in')->where('siswa_id',$siswa->id)->sum('jumlah');
        $output = Tabungan::where('tipe','out')->where('siswa_id',$siswa->id)->sum('jumlah');
        $tabungan = Tabungan::where('siswa_id', $siswa->id)->orderBy('created_at','desc');
        
        if($tabungan->count() != 0){
            $verify = $tabungan->first()->saldo;
        }else{
            $verify = 0;
        }
        $tabungan = $tabungan->paginate(10, ['*'], 'tabungan');
        
        if(($input - $output) == $verify){
            $saldo = format_idr($input - $output);
        }else{
            $saldo = 'invalid'.format_idr($input - $output);
        }
        
        $tagihan = $this->getTagihan($siswa);

        return view('siswa.show', [
            'siswa' => $siswa,
            'saldo' => $saldo,
            'tabungan' => $tabungan,
            'tagihan' => $tagihan,
        ]);
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function edit(Siswa $siswa)
    {
        $kelas = Kelas::all();
        return view('siswa.form', [
            'siswa' => $siswa,
            'kelas' => $kelas
        ]);
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, Siswa $siswa)
    {
        $request->validate([
            'kelas_id' => 'required|numeric',
            'nama' => 'required|max:255',
            'tempat_lahir' => 'nullable|max:255',
            'tanggal_lahir' => 'nullable|date',
            'jenis_kelamin' => 'nullable|in:L,P',
            'alamat' => 'nullable',
            'nama_wali' => 'nullable|max:255',
            'telp_wali' => 'nullable|numeric',
            'is_yatim' => 'nullable|boolean',
        ]);

        $siswa = $siswa->fill($request->input());

        if($request->is_yatim != null){
            $siswa->is_yatim = 1;
        }else{
            $siswa->is_yatim = 0;
        }

        if($siswa->save()){
            return redirect()->route('siswa.index')->with([
                'type' => 'success',
                'msg' => 'Siswa diubah'
            ]);
        }else{
            return redirect()->route('siswa.index')->with([
                'type' => 'danger',
                'msg' => 'Err.., Terjadi Kesalahan'
            ]);
        }
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function destroy(Siswa $siswa)
    {
        if(($siswa->transaksi->count() == 0) && ($siswa->tabungan->count() == 0)){
            if($siswa->delete()){
                return redirect()->route('siswa.index')->with([
                    'type' => 'success',
                    'msg' => 'siswa telah dihapus'
                ]);
            }
        }else{
            return redirect()->route('siswa.index')->with([
                'type' => 'danger',
                'msg' => 'tidak dapat menghapus siswa yang masih memiliki transaksi'
            ]);
        }
        return redirect()->route('siswa.index')->with([
            'type' => 'danger',
            'msg' => 'Err.., terjadi kesalahan'
        ]);
    }

    public function showFormImport()
    {
        return view('siswa.import');
    }

    public function import(Request $request)
    {
        $request->validate([
            'file' => 'required'
        ]);

        if($request->hasFile('file')){
            $extensions = ["xls","xlsx","xlm","xla","xlc","xlt","xlw"];
            $result = [$request->file('file')->getClientOriginalExtension()];

            if(in_array($result[0], $extensions)){
                Excel::import(new SiswaImport, $request->file('file'));
                return redirect()->route('siswa.index')->with([
                    'type' => 'success',
                    'msg' => 'data berhasil di import'
                ]);
            }

            return redirect()->route('siswa.index')->with([
                'type' => 'danger',
                'msg' => 'terjadi kesalahan : file error'
            ]);
        }

        return redirect()->route('siswa.index')->with([
            'type' => 'info',
            'msg' => 'terjadi kesalahan : nofile'
        ]);
    }

    public function export()
    {
        return Excel::download(new SiswaExport, 'siswa-'.now().'.xlsx');
    }

    //api saldo
    public function getSaldo(Siswa $siswa)
    {
        if($siswa == null){
            return response()->json(['msg' => 'siswa tidak ditemukan'], 404);
        }
        if($siswa->tabungan->count() == 0){
            return response()->json(['saldo' => '0', 'sal' => '0']);
        }

        $input = Tabungan::where('tipe','in')->where('siswa_id',$siswa->id)->sum('jumlah');
        $output = Tabungan::where('tipe','out')->where('siswa_id',$siswa->id)->sum('jumlah');
        $verify = Tabungan::where('siswa_id', $siswa->id)->orderBy('created_at','desc')->first()->saldo;
        if(($input - $output) == $verify){
            return response()->json(['saldo' => $input - $output, 'sal' => format_idr($input - $output)]);
        }else{
            return response()->json(['saldo' => '0', 'sal' => 'invalid '.format_idr($input - $output)]);
        }
    }

    protected function getTagihan(Siswa $siswa)
    {
        $tagihan = [];
        $tagihan_ids = [];

        //wajib semua
        $tagihan_wajib = Tagihan::where('wajib_semua','1')->get()->toArray();
        //kelas only
        $tagihan_kelas = Tagihan::where('kelas_id', $siswa->kelas->id)->get()->toArray();
        //student only
        $tagihan_siswa = [];
        $tagihan_rolesiswa = $siswa->role;
        foreach($tagihan_rolesiswa as $tag_siswa){
            $tagihan_siswa[] = $tag_siswa->tagihan->toArray();
        }

        $tagihan_semua = array_merge($tagihan_wajib, $tagihan_kelas, $tagihan_siswa);
        
        foreach($tagihan_semua as $tagih){
            $tagihan_ids[] = $tagih['id'];
            $payed = Transaksi::where('tagihan_id', $tagih['id'])->where('siswa_id', $siswa->id)->get();
            if($payed->count() == 0){
                $tagihan[] = [
                    'nama' => $tagih['nama'],
                    'jumlah' => format_idr($tagih['jumlah']),
                    'diskon'=> '',
                    'total'=> '',
                    'is_lunas'=> '0',
                    'created_at' => '',
                    'keterangan' => ''
                ];
            }else{
                foreach($payed as $pay){
                    $tagihan[] = [
                        'nama' => $tagih['nama'],
                        'jumlah' => format_idr($tagih['jumlah']),
                        'diskon'=> format_idr($pay->diskon),
                        'total'=> format_idr($pay->keuangan->jumlah),
                        'is_lunas'=> $pay->is_lunas,
                        'created_at' => $pay->created_at->format('d-m-Y'),
                        'keterangan' => $pay->keterangan
                    ];
                }
            }
        }
        return $tagihan;
    }
}