<?php

namespace App\Http\Controllers\Pemohon;

use App\Http\Controllers\Controller;
use App\Models\Permohonan;
use App\Models\Vot;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Storage;

class PermohonanController extends Controller
{
    public function index()
    {
        $permohonan = Permohonan::with(['vot', 'jabatan'])->where('user_id', auth()->id())->latest()->paginate(10);
        return view('permohonan.index', compact('permohonan'));
    }

    public function create()
    {
        return view('permohonan.form', ['permohonan' => new Permohonan(), 'vot' => Vot::with('jabatan')->where('status', true)->get()]);
    }

    public function store(Request $request)
    {
        $validated = $this->validated($request);

        DB::transaction(function () use ($request, $validated) {
            $vot = Vot::findOrFail($validated['vot_id']);
            $permohonan = Permohonan::create([
                'no_rujukan' => 'MBIP/BJT/'.now()->format('YmdHis').'/'.auth()->id(),
                'user_id' => auth()->id(),
                'jabatan_id' => auth()->user()->jabatan_id ?: $vot->jabatan_id,
                'vot_id' => $vot->id,
                'kategori' => $validated['kategori'],
                'tujuan' => $validated['tujuan'],
                'status' => $request->input('action') === 'submit' ? 'Submitted' : 'Draft',
                'submitted_at' => $request->input('action') === 'submit' ? now() : null,
                'gambar_1' => $this->storeImage($request, 'gambar_1'),
                'gambar_2' => $this->storeImage($request, 'gambar_2'),
            ]);

            $total = 0;
            foreach ($validated['items'] as $row) {
                $jumlah = $row['kuantiti'] * $row['harga_anggaran'];
                $total += $jumlah;
                $permohonan->items()->create($row + ['jumlah' => $jumlah]);
            }
            $permohonan->update(['jumlah_keseluruhan' => $total]);
        });

        return redirect()->route('permohonan.index')->with('success', 'Permohonan berjaya disimpan.');
    }

    public function show(Permohonan $permohonan)
    {
        $this->authorizeOwner($permohonan);
        return view('permohonan.show', ['permohonan' => $permohonan->load(['items', 'vot', 'jabatan', 'user'])]);
    }

    public function submit(Permohonan $permohonan)
    {
        $this->authorizeOwner($permohonan);
        $permohonan->update(['status' => 'Submitted', 'submitted_at' => now()]);
        return back()->with('success', 'Permohonan dihantar kepada Pelaksana.');
    }

    private function validated(Request $request): array
    {
        return $request->validate([
            'vot_id' => ['required', 'exists:vot,id'],
            'kategori' => ['required', 'max:255'],
            'tujuan' => ['required'],
            'gambar_1' => ['nullable', 'image', 'mimes:jpg,jpeg,png', 'max:5120'],
            'gambar_2' => ['nullable', 'image', 'mimes:jpg,jpeg,png', 'max:5120'],
            'items' => ['required', 'array', 'min:1'],
            'items.*.item' => ['required', 'max:255'],
            'items.*.kuantiti' => ['required', 'integer', 'min:1'],
            'items.*.harga_anggaran' => ['required', 'numeric', 'min:0'],
        ]);
    }

    private function storeImage(Request $request, string $field): ?string
    {
        return $request->hasFile($field) ? $request->file($field)->store('permohonan', 'public') : null;
    }

    private function authorizeOwner(Permohonan $permohonan): void
    {
        abort_unless($permohonan->user_id === auth()->id() || auth()->user()->hasAnyRole(['Admin', 'Pelaksana']), 403);
    }
}