<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\DB;


class WorkstationsJobsController extends Controller
{
    public function index()
    {
        $userEmail = Auth::user()->email;

        $equipmentsTodo = DB::table('ordered_equipment_tasks AS oet')
            ->distinct()
            ->select('oet.equipment_id', 'eq.equipment_tag')
            ->join('equipments AS eq', 'oet.equipment_id', '=', 'eq.equipment_id')
            ->join('workstations_association_tasks AS wat', 'oet.elemental_tasks_id', '=', 'wat.elemental_tasks_id')
            ->whereIn('eq.company_projects_id', function ($query) use ($userEmail) {
                $query->select('cw.company_projects_id')
                    ->from('construction_workstations AS cw')
                    ->join('users AS u', 'cw.name_workstations', '=', 'u.user_name')
                    ->where('u.email', $userEmail);
            })
            ->whereIn('wat.id_workstations', function ($query) use ($userEmail) {
                $query->select('cw.id_workstations')
                    ->from('construction_workstations AS cw')
                    ->join('users AS u', 'cw.name_workstations', '=', 'u.user_name')
                    ->where('u.email', $userEmail);
            })
            ->where('oet.execution_order', '=', function ($query) {
                $query->selectRaw('IFNULL(MIN(ot.execution_order), 1)')
                    ->from('ordered_equipment_tasks AS ot')
                    ->whereColumn('ot.equipment_id', 'oet.equipment_id')
                    ->whereNotIn('ot.elemental_tasks_id', function ($query) {
                        $query->select('cew.elemental_tasks_id')
                            ->from('control_equipment_workstation AS cew')
                            ->whereColumn('ot.equipment_id', 'cew.equipment_id');
                    });
            })
            ->whereNotExists(function ($query) {
                $query->select(DB::raw(1))
                    ->from('control_equipment_workstation AS cew')
                    ->whereColumn('oet.equipment_id', 'cew.equipment_id');
            })
            ->get();


        $equipmentsDone = DB::select("
                WITH username AS (
                    SELECT
                        user_name
                    FROM
                        users
                    WHERE
                        email = :email
                ),
                workstations AS (
                    SELECT
                        id_workstations,
                        company_projects_id
                    FROM
                        construction_workstations
                    WHERE
                        name_workstations = (SELECT user_name FROM username)
                ),
                watet AS (
                    SELECT
                        elemental_tasks_id
                    FROM
                        workstations_association_tasks
                    WHERE
                        id_workstations = (SELECT id_workstations FROM workstations)
                ),
                jobs AS (
                    SELECT
                        ordered_equipment_tasks.equipment_id,
                        equipments.equipment_tag,
                        ordered_equipment_tasks.execution_order,
                        ordered_equipment_tasks.elemental_tasks_id,
                        workstations.id_workstations
                    FROM
                        ordered_equipment_tasks
                    INNER JOIN
                        equipments
                    ON
                        ordered_equipment_tasks.equipment_id = equipments.equipment_id
                    INNER JOIN
                        workstations
                    ON
                        equipments.company_projects_id = workstations.company_projects_id
                    WHERE
                        ordered_equipment_tasks.elemental_tasks_id IN (SELECT elemental_tasks_id FROM watet)
                ),
                valid_jobs AS (
                    SELECT 
                        jobs.equipment_id,
                        jobs.equipment_tag
                    FROM 
                        jobs
                    WHERE 
                        NOT EXISTS (
                            SELECT 
                                1
                            FROM 
                                jobs AS j2 
                            WHERE 
                                j2.equipment_id = jobs.equipment_id 
                                AND NOT EXISTS (
                                    SELECT 
                                        1 
                                    FROM 
                                        control_equipment_workstation 
                                    WHERE 
                                        control_equipment_workstation.equipment_id = j2.equipment_id 
                                        AND control_equipment_workstation.elemental_tasks_id = j2.elemental_tasks_id 
                                        AND control_equipment_workstation.elemental_tasks_id IS NOT NULL
                                )
                        )
                        AND EXISTS (
                            SELECT 
                                1 
                            FROM 
                                control_equipment_workstation 
                            WHERE 
                                control_equipment_workstation.equipment_id = jobs.equipment_id 
                                AND jobs.id_workstations = control_equipment_workstation.id_workstations 
                                AND control_equipment_workstation.id_workstations IS NOT NULL 
                                AND control_equipment_workstation.entry_date IS NOT NULL 
                                AND control_equipment_workstation.departure_date IS NOT NULL
                        )
                )
                SELECT DISTINCT
                    valid_jobs.equipment_id,
                    valid_jobs.equipment_tag
                FROM 
                    valid_jobs;
            ", ['email' => $userEmail]);

            
        $equipmentsReturned = DB::select("
        SELECT DISTINCT 
            jobs.equipment_id, 
            jobs.equipment_tag
        FROM (
            SELECT 
                oet.equipment_id,
                e.equipment_tag,
                oet.execution_order,
                oet.elemental_tasks_id,
                cw.id_workstations
            FROM 
                ordered_equipment_tasks AS oet
            JOIN 
                equipments AS e ON oet.equipment_id = e.equipment_id
            JOIN 
                (
                SELECT 
                    cw.id_workstations, 
                    cw.company_projects_id, 
                    wat.elemental_tasks_id
                FROM 
                    construction_workstations AS cw
                JOIN 
                    users AS u ON cw.name_workstations = u.user_name
                JOIN 
                    (
                    SELECT 
                        wat.id_workstations, 
                        wat.elemental_tasks_id
                    FROM 
                        workstations_association_tasks AS wat
                    ) AS wat ON wat.id_workstations = cw.id_workstations
                WHERE 
                    u.email = :email
                ) AS cw ON e.company_projects_id = cw.company_projects_id
            WHERE 
                oet.elemental_tasks_id = cw.elemental_tasks_id
        ) AS jobs
        INNER JOIN (
            SELECT cew.*
            FROM control_equipment_workstation cew
            INNER JOIN (
                SELECT equipment_id, elemental_tasks_id
                FROM control_equipment_workstation
                GROUP BY equipment_id, elemental_tasks_id
                HAVING COUNT(*) > 1
            ) AS subquery 
            ON cew.equipment_id = subquery.equipment_id 
            AND cew.elemental_tasks_id = subquery.elemental_tasks_id
            WHERE cew.id_workstations IS NULL 
            AND cew.entry_date IS NULL
        ) AS repeated ON jobs.equipment_id = repeated.equipment_id
                        AND jobs.elemental_tasks_id = repeated.elemental_tasks_id
        ", ['email' => $userEmail]);

        $workstationNameQuery = DB::select("
        SELECT construction_workstations.nomenclature_workstation 
        FROM construction_workstations 
        JOIN users 
        WHERE construction_workstations.name_workstations = users.user_name 
        AND users.email = :email;
        ", ['email' => $userEmail]);

        $workstationName = $workstationNameQuery[0]->nomenclature_workstation;

        //Counting of equipments
        $equipmentsTodoCount = count($equipmentsTodo);
        $equipmentsDoneCount = count($equipmentsDone);
        $equipmentsReturnedCount = count($equipmentsReturned);
        
        //Returning values of the queries to workstations layout
        return view('workstations.index', [
            'equipmentsTodo' => $equipmentsTodo, 'equipmentsTodoCount' => $equipmentsTodoCount,
            'equipmentsDone' => $equipmentsDone, 'equipmentsDoneCount' => $equipmentsDoneCount,
            'equipmentsReturned' => $equipmentsReturned, 'equipmentsReturnedCount' => $equipmentsReturnedCount,
            'workstationName' =>$workstationName
        ]);
    }
}