<?php

namespace Modules\ClinicalData\Http\Controllers;

use Illuminate\Http\Request;
use Streamline\Models\Symptom;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Validator;
use Illuminate\Support\Facades\Auth;
use Streamline\Models\Triage;
use Illuminate\Database\QueryException;

class SymptomController extends Controller {

    public function __construct() {
        $this->middleware('auth');
        $this->middleware('permission:symptom-list', ['only' => ['index']]);
        $this->middleware('permission:symptom-create', ['only' => ['create', 'store']]);
        $this->middleware('permission:symptom-edit', ['only' => ['edit', 'update', 'edit_all', 'update_all']]);
        $this->middleware('permission:symptom-delete', ['only' => ['destroy', 'inactive', 'activate']]);
    }

    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index() {
        $symptoms = Symptom::orderBy('name', 'asc')->paginate(2000);
        $symptom_data = [];
        $triage_symptoms = Triage::distinct('symptoms')->get(['symptoms']);
        foreach ($triage_symptoms as $value) {
            $actual_symptoms = explode(',', $value->symptoms);
            foreach ($actual_symptoms as $actual_symptom) if(!empty($actual_symptom) && !in_array($actual_symptom, $symptom_data)) $symptom_data[] = $actual_symptom;
        }

        return view('clinical_data::symptoms.index', compact('symptoms', 'symptom_data'));
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create() {
        return view('clinical_data::symptoms.create');
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request) {
        request()->validate([
            'name' => 'required'
        ]);

        $logged_in_user_id = Auth()->user()->id;
        $symptom = new Symptom;

        $symptom->name = $request->name;
        $symptom->prompts = $request->prompts;
        $symptom->reference_text = implode(',', $request->reference_text);
        $symptom->reference_link = implode(',', $request->reference_link);
        $symptom->created_by = $logged_in_user_id;
        $symptom->available = $request->available;

        try {
            $symptom->save();
            flash($request->name . " Symptom has been saved")->success();
            return redirect("/symptoms/");
        } catch (QueryException $e) {
            flash("An error occurred")->error();
            return back()->withInput();
        }
    }

    /**
     * Display the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function show($id) {
        //
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function edit($id) {
        $symptom = Symptom::where(['id' => $id])->first();

        if (!$symptom) {
            flash()->error("There is no such symptom");
            return redirect('/symptoms/');
        } else {
            return view('clinical_data::symptoms.edit', compact('symptom'));
        }
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, $id) {
        request()->validate([
            'name' => 'required'
        ]);

        $logged_in_user_id = Auth()->user()->id;

        $symptom = Symptom::find($id);
        $symptom->name = $request->name;
        $symptom->prompts = $request->prompts;
        $symptom->reference_text = $request->reference_text;
        $symptom->reference_link = $request->reference_link;
        $symptom->available = $request->available;
        $symptom->updated_by = $logged_in_user_id;

        try {
            $symptom->save();
            flash($request->name . " Symptom has been updated")->success();
            return redirect("/symptoms/");
        } catch (QueryException $e) {
            flash("An error occurred")->error();
            return back()->withInput();
        }
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function destroy($id) {
        $symptom = Symptom::find($id);

        if ($symptom->delete()){
            flash("Symptom has been deleted.")->success();
            return redirect('/symptoms/');
        }
    }

    /**
     * Display a listing of the inactive resource(s).
     *
     * @return \Illuminate\Http\Response
     */
    public function inactive() {
        $symptoms = Symptom::onlyTrashed()
                ->orderBy('name', 'asc')
                ->paginate(50);

        if (empty($symptoms)) {
            flash()->error("There is no inactive symptom");
            return redirect('/symptoms/');
        } else {
            return view('clinical_data::symptoms.inactive', compact('symptoms'));
        }
    }

    /**
     * Activate the specified resource in storage.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function activate($id) {
        $symptom = Symptom::withTrashed()->find($id);

        if ($symptom->restore()){
            flash("Symptom has been activated.")->success();
            return redirect('/symptoms/inactive');
        }
    }

    /**
     * Search a resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function search(Request $request) {
        $query_name = $request->query_name;
        $query_active = $request->query_active;

        if ($query_name != "") {
            $symptoms = Symptom::where([
                        ['active', '=', $query_active],
                        ['name', 'LIKE', '%' . $query_name . '%']
                    ])
                    ->orderBy('name', 'asc')
                    ->paginate(10)
                    ->setPath('');

            $symptoms->appends(array(
                'query_name' => $query_name,
                'query_active' => $query_active
            ));

            if (count($symptoms)) {
                if ($query_active) {
                    return view('clinical_data::symptoms.index', compact('symptoms'))//;
                                    ->withDetails($symptoms)
                                    ->withQuery($query_name, $query_active);
                } else {
                    return view('clinical_data::symptoms.inactive', compact('symptoms'))//;
                                    ->withDetails($symptoms)
                                    ->withQuery($query_name, $query_active);
                }
            }
        }
        flash()->error("No Details found. Try searching again!");
        return redirect('/symptoms/');
    }

    /**
     * Display a listing of the active resources for bulk editing.
     *
     * @return \Illuminate\Http\Response
     */
    public function edit_all() {
        $symptoms = Symptom::orderBy('name', 'asc')->paginate(2000);

        if (count($symptoms) < 1) {
            flash()->error("There is no active symptom");
            return redirect('/symptoms/');
        } else {
            return view('clinical_data::symptoms.edit.all', compact('symptoms'));
        }
    }

    /**
     * Update all the resources in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function update_all(Request $request) {
        request()->validate([
            'name' => 'required'
        ]);

        $logged_in_user_id = Auth()->user()->id;

        $id_array = $request->id;
        $name_array = $request->name;
        $prompts_array = $request->prompts;
        $reference_text_array = $request->reference_text;
        $reference_link_array = $request->reference_link;

        for ($x = 0; $x < count($id_array); $x++){
            $symptom = Symptom::find($id_array[$x]);

            $symptom->name = $name_array[$x];
            $symptom->prompts = $prompts_array[$x];
            $symptom->reference_text = $reference_text_array[$x];
            $symptom->reference_link = $reference_link_array[$x];
            $symptom->updated_by = $logged_in_user_id;

            try {
                $symptom->save();
            } catch (QueryException $e) {
                flash("An error occurred")->error();
                return back()->withInput();
            }
        }

        flash("Symptoms have been updated")->success();
        return redirect("/symptoms/");
    }

    /**
     * Activate the specified resource in storage.
     *
     * @param  int  $id
     * @return String
     */
    public function get_prompt($id) {
        $prompts = DB::table('symptoms')->where('id', $id)->value('prompts');
        $reference_text = DB::table('symptoms')->where('id', $id)->value('reference_text');
        $data = $prompts.'&&&&<a style="color: blue;" href="'.$reference_text.'" target="_blank">Ref 1</a>';

        return $data;
    }

    public function get_symptoms(){
        //code to be returned to view
        $code = "<option> -- select -- </option>";

        $symptoms = Symptom::orderBy('name', 'asc')->get();

        foreach ($symptoms as $symptom) {
            $code .= "<option value='" . $symptom->id . "'>" . $symptom->name . "</option>";
        }

        return $code;
    }

    /* test server side scolling with datatables */
    public function datatable_test(){
        $symptoms = Symptom::orderBy('name', 'asc')->get();

        return response()->json($symptoms);
    }
}