<?php

namespace Modules\Patients\Http\Controllers;

use Illuminate\Http\Request;
use Streamline\Models\Alert;
use Streamline\Models\Allergy;
use Streamline\Models\DrugCategory;
use Streamline\Models\PatientDocument;
use Streamline\Models\Patient;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Validator;

class PatientDocumentController extends Controller {

    public function __construct() {
        $this->middleware('auth');
    }

    public function index() {
        $patient_id = session()->get('patient_id');

        $patient_episodes = \Illuminate\Support\Facades\DB::table('patient_episodes')
                ->where(['patient_id' => $patient_id])
                ->orderBy('id', 'desc')
                ->get();
        $patient = Patient::where(['id' => $patient_id])->first();

        $categories = DB::table('patient_categories')->where('available', 1)->pluck("name", "id");
        $marital_statuses = DB::table('marital_statuses')->pluck("name", "id");
        $diagnoses = DB::table('diagnoses')->where('available', 1)->pluck("name", "id");
        $clinics = DB::table('clinics')->pluck("name", "id");
        $relationships = DB::table('family_relations')->pluck('name', 'id');
        $occupations = DB::table('occupations')->pluck('name', 'id');
        $patient_categories = DB::table('patient_categories')->where('available', 1)->pluck('name', 'id');
        $districts = DB::table('districts')->pluck('name', 'id');
        $counties = DB::table('counties')->pluck('name', 'id');
        $subcounties = DB::table('subcounties')->pluck('name', 'id');
        $parishes = DB::table('parishes')->pluck('name', 'id');
        $villages = DB::table('villages')->pluck('name', 'id');
        $drug_categories = DrugCategory::orderBy('name', 'asc')->get();
        $documents = PatientDocument::where('patient_id', $patient_id)->orderBy('created_at', 'desc')->get();
        $known_patient_allergies = Allergy::where('patient_id', $patient_id)->orderBy('created_at', 'desc')->take(2)->get();
        $known_patient_alerts = Alert::where('patient_id', $patient_id)->orderBy('created_at', 'desc')->take(2)->get();
        $drug_categories_array = DB::table('drug_categories')->pluck('name', 'id');
        return view('patients::patient_documents.index', compact('patient', 'clinics', 'relationships', 'occupations', 'patient_categories', 'diagnoses', 'patient_episodes', 'categories', 'marital_statuses', 'districts', 'counties', 'subcounties', 'parishes', 'villages', 'drug_categories', 'documents', 'known_patient_allergies', 'known_patient_alerts', 'drug_categories_array'));
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create() {
        $patient_id = session()->get('patient_id');
        $episode_id = session()->get('episode_id');
        $patient = Patient::find($patient_id);
        $categories = DB::table('patient_categories')->where('available', 1)->pluck("name", "id");
        $drug_categories = DB::table('drug_categories')->get();
        $marital_statuses = DB::table('marital_statuses')->pluck("name", "id");
        $diagnoses = DB::table('diagnoses')->where('available', 1)->pluck("name", "id");
        $clinics = DB::table('clinics')->pluck("name", "id");
        $relationships = DB::table('family_relations')->pluck('name', 'id');
        $occupations = DB::table('occupations')->pluck('name', 'id');
        $patient_categories = DB::table('patient_categories')->where('available', 1)->pluck('name', 'id');
        $districts = DB::table('districts')->pluck('name', 'id');
        $counties = DB::table('counties')->pluck('name', 'id');
        $subcounties = DB::table('subcounties')->pluck('name', 'id');
        $parishes = DB::table('parishes')->pluck('name', 'id');
        $villages = DB::table('villages')->pluck('name', 'id');
        $documents = PatientDocument::where('patient_id', $patient_id)->orderBy('created_at', 'desc')->get();
        $drug_categories = DB::table('drug_categories')->orderBy('name', 'asc')->get();
        //allergies and alerts
        $known_patient_allergies = \Streamline\Models\Allergy::where('patient_id', $patient_id)->orderBy('created_at', 'desc')->take(2)->get();
        $known_patient_alerts = \Streamline\Models\Alert::where('patient_id', $patient_id)->orderBy('created_at', 'desc')->take(2)->get();
        $drug_categories_array = DB::table('drug_categories')->pluck('name', 'id');
        return view('patients::patient_documents.create', compact('patient', 'clinics', 'relationships', 'occupations', 'patient_categories', 'diagnoses', 'categories', 'marital_statuses', 'districts', 'counties', 'subcounties', 'parishes', 'villages', 'drug_categories', 'episode_id', 'documents', 'drug_categories_array', 'drug_categories', 'known_patient_allergies', 'known_patient_alerts'));
    }

    /**
     * Store a newly created resource in storage.
     *
     */
    public function store(Request $request) {
        request()->validate([
            'documenttitle' => 'required'
        ]);

        $patient_document = new PatientDocument;
        $patient_document->patient_id = session()->get('patient_id');
        $patient_document->episode_id = session()->get('episode_id');
        $patient_document->title = $request->documenttitle;
        $patient_document->description = $request->description;

        if ($request->file('document')->isValid()) {
            $file = $request->file('document');
            $store = public_path() . '/uploads/patient-documents/';
            $file_name = $file->getClientOriginalName();
            $file->move($store, $file_name);
            $patient_document->path = public_path() . '/uploads/patient-documents/' . $file_name;
        }

        $patient_document->date_taken = \Carbon\Carbon::createFromFormat('d/m/Y', $request->documentdate)->toDateString();
        $patient_document->created_by = auth()->user()->id;
        $patient_document->úpdated_by = auth()->user()->id;
        $patient_document->save();

        flash("document has been added.")->success();

        // redirect to consultation or patient_episode page depending on where the user is from
        if (session()->has('redirect_to_consultation')) {
            $url = session()->get('redirect_to_consultation');
            session()->forget('redirect_to_consultation');
            return redirect($url);
        } else {
            return redirect("/patient_episodes");
        }
    }

    public function modal_store(Request $request) {
        $validator = Validator::make($request->all(), [
            'documenttitle' => 'required',
        ]);

        if ($validator->fails()) {
            $string = "";
            foreach ($validator->errors()->getMessages() as $item) {
                $string .= "{$item[0]}<br>";
            }
            return back()->withErrors($validator)->withInput();
        } else {
            $patient_document = new PatientDocument;
            $patient_document->patient_id = session()->get('patient_id');
            $patient_document->episode_id = session()->get('episode_id');
            $patient_document->title = $request->documenttitle;
            $patient_document->description = $request->description;
            if ($request->file('document')->isValid()) {
                $file = $request->file('document');
                $store = public_path() . '/uploads/patient-documents/';
                $file_name = $file->getClientOriginalName();
                $file->move($store, $file_name);
                $patient_document->path = public_path() . '/uploads/patient-documents/' . $file_name;
            }
            $patient_document->date_taken = \Carbon\Carbon::createFromFormat('d/m/Y', $request->documentdate)->toDateString();
            $patient_document->created_by = auth()->user()->id;
            $patient_document->úpdated_by = auth()->user()->id;
            $patient_document->save();
            flash("document has been added.")->success();
            return redirect('/consultation/route');
        }
    }

    /**
     * Display the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function show($id) {
        $document = PatientDocument::find($id);
        if (substr($document->path, 0, 25) === "../uploads/patient_upload") {
            $document_path_cleaned = str_replace("../uploads/patient_uploads", "/var/www/html/uploads/patient-documents", $document->path);
        } else {
            $document_path_cleaned = $document->path;
        }

        $ext = pathinfo($document->path, PATHINFO_EXTENSION);

        if ($ext == "pdf") {
            
            return response()->file($document_path_cleaned, ['Content-Type' => 'application/pdf']);
            
        } elseif ($ext == 'doc') {
            return response()->file($document_path_cleaned, [
                        'Content-Type' => 'application/msword'
            ]);
        } elseif ($ext == 'docx') {
            return response()->file($document_path_cleaned, [
                        'Content-Type' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document'
            ]);
        } elseif ($ext == 'xls') {
            return response()->file($document_path_cleaned, [
                        'Content-Type' => 'application/vnd.ms-excel'
            ]);
        } elseif ($ext == 'xlsx') {
            return response()->file($document_path_cleaned, [
                        'Content-Type' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
            ]);
        } elseif ($ext == 'txt') {
            return response()->file($document_path_cleaned, [
                        'Content-Type' => 'application/octet-stream'
            ]);
        } elseif ($ext == 'png' || $ext == 'jpg' || $ext == 'JPG' || $ext == 'jpeg') {
            return response()->file($document_path_cleaned, [
                        'Content-Type' => 'image/jpeg'
            ]);
        }
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function edit($id) {
        //
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, $id) {
        //
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function destroy($id) {
        $document = PatientDocument::find($id);
        if ($document->delete()):
            flash("document has been deleted.")->error();
            return redirect('/patient_documents/');
        endif;
    }

    /*
     * put the episode id in the session before creating the document
     */

    public function set_episode_id($id) {
        session()->put(['episode_id' => $id]);
    }

}