<?php

namespace Modules\Pharmacy\Http\Controllers;

use Carbon\Carbon;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Streamline\Models\Patient;
use Streamline\Models\PatientDispensing;
use Streamline\Models\PrescriptionError;
use Streamline\Models\Treatment;

class PrescriptionErrorsController extends Controller {

    public function index(Request $request) {
        if (isset($request->start_date)){
            $start_date = Carbon::createFromFormat('d/m/Y', $request->start_date)->toDateString();
            $end_date = Carbon::createFromFormat('d/m/Y', $request->end_date)->toDateString();
        } else {
            $start_date = Carbon::now()->startOfDay()->toDateTimeString();
            $end_date = Carbon::now()->endOfDay()->toDateTimeString();
        }

        $prescription_errors = DB::table('prescription_errors')->orderBy('created_at', 'desc')
            ->whereBetween('created_at', [$start_date, $end_date])
            ->paginate(1000);

        $search_text = "Searching between " . streamline_date($start_date) . " and " . streamline_date($end_date);

        return view('pharmacy::prescription_errors.index', compact('prescription_errors', 'search_text'));
    }

    public function view_prescription_error_details($id){
        $prescription_error = PrescriptionError::find($id);

        if (!$prescription_error){
            return back()->withInput();
        }

        $altered_drugs_array = array(
            "drugs" => $prescription_error->previous_drugs,
            "dose" => $prescription_error->previous_doses,
            "drug_frequency" => $prescription_error->previous_frequencies,
            "instructions" => $prescription_error->previous_instruction,
            "duration" => $prescription_error->previous_durations,
            "quantity_dispensed" => $prescription_error->previous_quantities_dispensed,
        );

        $prescribed_drugs = Treatment::find($prescription_error->treatment_id);

        if (!$prescribed_drugs){
            return back()->withInput();
        }

        $prescribed_drugs_array = array(
            "drugs" => $prescribed_drugs->drugs,
            "dose" => $prescribed_drugs->doses,
            "drug_frequency" => $prescribed_drugs->frequencies,
            "instructions" => $prescribed_drugs->instruction,
            "duration" => $prescribed_drugs->durations,
            "quantity_dispensed" => $prescribed_drugs->quantities_dispensed,
        );

        return view('pharmacy::prescription_errors.view_prescription_error_details', compact('prescription_error', 'prescribed_drugs_array', 'altered_drugs_array'));
    }
}