<?php

namespace App\Http\Controllers;

use App\BioCabinet;
use App\BioRack;
use App\BioSpecimen;
use Carbon\Carbon;
use Illuminate\Http\Request;
use Session;
use Validator;

class BiorepositoryController extends Controller
{
    public function index()
    {
        if (Session::get('previlage') == '') {
            return redirect('/login');
        }

        $data = [];
        $data['cabinetOptions'] = BioCabinet::orderBy('name', 'ASC')->get();
        $data['rackOptions'] = BioRack::with('cabinet')->orderBy('name', 'ASC')->get();
        $data['totalCabinets'] = BioCabinet::count();
        $data['totalRacks'] = BioRack::count();
        $data['totalSpecimens'] = BioSpecimen::count();

        $data['cabinets'] = BioCabinet::with([
            'racks' => function ($query) {
                $query->orderBy('level', 'ASC')->orderBy('name', 'ASC');
            },
            'racks.specimens' => function ($query) {
                $query->orderBy('stored_at', 'ASC');
            },
        ])->orderBy('name', 'ASC')->get();

        $data['oldestSpecimen'] = BioSpecimen::with(['cabinet', 'rack'])
            ->whereNotNull('stored_at')
            ->orderBy('stored_at', 'ASC')
            ->first();

        $data['oldestStorageDays'] = 0;
        if ($data['oldestSpecimen']) {
            $data['oldestStorageDays'] = Carbon::parse($data['oldestSpecimen']->stored_at)->diffInDays(Carbon::now());
        }

        return view('admin.biorepository', $data);
    }

    public function storeCabinet(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'code' => 'required|max:50|unique:bio_cabinets,code',
            'name' => 'required|max:150',
            'location' => 'nullable|max:200',
            'notes' => 'nullable',
        ]);

        if ($validator->fails()) {
            return back()->withErrors($validator)->withInput();
        }

        BioCabinet::create([
            'code' => $request->input('code'),
            'name' => $request->input('name'),
            'location' => $request->input('location'),
            'notes' => $request->input('notes'),
        ]);

        return redirect('/biorepository')->with('success', 'Lemari biorepository berhasil ditambahkan.');
    }

    public function storeRack(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'cabinet_id' => 'required|exists:bio_cabinets,id',
            'code' => 'required|max:50',
            'name' => 'required|max:150',
            'level' => 'required|integer|min:1',
            'capacity' => 'nullable|integer|min:0',
            'notes' => 'nullable',
        ]);

        if ($validator->fails()) {
            return back()->withErrors($validator)->withInput();
        }

        $exists = BioRack::where('cabinet_id', $request->input('cabinet_id'))
            ->where('code', $request->input('code'))
            ->exists();

        if ($exists) {
            return back()->withErrors(['code' => 'Kode rack sudah dipakai pada lemari ini.'])->withInput();
        }

        BioRack::create([
            'cabinet_id' => $request->input('cabinet_id'),
            'code' => $request->input('code'),
            'name' => $request->input('name'),
            'level' => $request->input('level'),
            'capacity' => $request->input('capacity') ?? 0,
            'notes' => $request->input('notes'),
        ]);

        return redirect('/biorepository')->with('success', 'Rack berhasil ditambahkan.');
    }

    public function storeSpecimen(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'rack_id' => 'required|exists:bio_racks,id',
            'specimen_code' => 'required|max:100|unique:bio_specimens,specimen_code',
            'specimen_name' => 'required|max:200',
            'patient_name' => 'nullable|max:200',
            'collected_at' => 'nullable|date',
            'stored_at' => 'required|date',
            'volume' => 'nullable|max:50',
            'storage_condition' => 'nullable|max:100',
            'notes' => 'nullable',
        ]);

        if ($validator->fails()) {
            return back()->withErrors($validator)->withInput();
        }

        $rack = BioRack::find($request->input('rack_id'));

        BioSpecimen::create([
            'cabinet_id' => $rack->cabinet_id,
            'rack_id' => $rack->id,
            'specimen_code' => $request->input('specimen_code'),
            'specimen_name' => $request->input('specimen_name'),
            'patient_name' => $request->input('patient_name'),
            'collected_at' => $request->input('collected_at'),
            'stored_at' => $request->input('stored_at'),
            'volume' => $request->input('volume'),
            'storage_condition' => $request->input('storage_condition'),
            'notes' => $request->input('notes'),
        ]);

        return redirect('/biorepository')->with('success', 'Spesimen berhasil ditambahkan.');
    }
}