<?php

namespace App\Http\ViewComposers;

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

use Illuminate\View\View;

class WorkstationComposer
{
    public function compose(View $view)
    {
        $userEmail = Auth::user()->email;

        $equipmentsTodo = DB::select("
        WITH equipments_multiple_rows AS (
            SELECT 
                e.equipment_id,
                e.equipment_tag,
                COALESCE(MAX(oet.elemental_tasks_id), MAX(oet.further_tasks_id)) AS equipment_all_tasks
            FROM 
                users u
            JOIN 
                construction_workstations cw ON u.user_name = cw.name_workstations
            JOIN 
                workstations_association_tasks wat ON cw.id_workstations = wat.id_workstations
            JOIN 
                equipments e ON wat.company_projects_id = e.company_projects_id
            JOIN 
                ordered_equipment_tasks oet ON e.equipment_id = oet.equipment_id
            WHERE 
                u.email = :email1
            AND 
                oet.execution_order = 1
            GROUP BY 
                e.equipment_id, 
                e.equipment_tag
        ),
        
        workstations_multiple_rows AS (
            SELECT 
                cw.id_workstations,
                cw.name_workstations,
                COALESCE(wat.elemental_tasks_id, wat.further_tasks_id) AS all_tasks
            FROM 
                users u
            JOIN 
                construction_workstations cw ON u.user_name = cw.name_workstations
            JOIN 
                workstations_association_tasks wat ON cw.id_workstations = wat.id_workstations
            WHERE 
                u.email = :email2
        ),
        
        workstations_control_all_tasks AS (
            SELECT 
                cew.control_equipment_workstation_id,
                cew.equipment_id,
                CASE 
                    WHEN cew.id_workstations IS NULL THEN NULL
                    WHEN cew.id_workstations IN (
                        SELECT wat.id_workstations
                        FROM workstations_association_tasks wat
                        JOIN construction_workstations cw ON wat.company_projects_id = cw.company_projects_id
                        JOIN users u ON u.user_name = cw.name_workstations
                        WHERE u.email = :email3
                    ) THEN cew.id_workstations
                    ELSE NULL
                END AS control_id_workstations,
                COALESCE(cew.elemental_tasks_id, cew.further_tasks_id) AS control_workstation_all_tasks,
                cew.equipment_comments_id,
                cew.entry_date,
                cew.departure_date
            FROM 
                control_equipment_workstation cew
            WHERE 
                cew.id_workstations IS NULL 
                OR cew.id_workstations IN (
                    SELECT wat.id_workstations
                    FROM workstations_association_tasks wat
                    JOIN construction_workstations cw ON wat.company_projects_id = cw.company_projects_id
                    JOIN users u ON u.user_name = cw.name_workstations
                    WHERE u.email = :email4
                )
        )
        
        SELECT 
            emr.equipment_id,
            emr.equipment_tag
        FROM 
            equipments_multiple_rows emr
        WHERE 
            (
                emr.equipment_all_tasks IN (SELECT all_tasks FROM workstations_multiple_rows)
                AND NOT EXISTS (
                    SELECT 1
                    FROM workstations_control_all_tasks wc
                    WHERE wc.equipment_id = emr.equipment_id
                    AND wc.control_id_workstations IN (SELECT id_workstations FROM workstations_multiple_rows)
                )
            )
            OR 
            (
                emr.equipment_id IN (
                    SELECT equipment_id
                    FROM workstations_control_all_tasks
                    WHERE control_id_workstations IS NULL
                    AND entry_date IS NULL
                    AND departure_date IS NULL
                    AND control_workstation_all_tasks IN (SELECT all_tasks FROM workstations_multiple_rows)
                )
                AND NOT EXISTS (
                    SELECT 1
                    FROM workstations_control_all_tasks wc
                    WHERE wc.equipment_id = emr.equipment_id
                    AND wc.control_id_workstations IS NOT NULL
                    GROUP BY wc.equipment_id
                    HAVING COUNT(DISTINCT wc.control_id_workstations) > 1
                )
            )
        GROUP BY 
            emr.equipment_id, 
            emr.equipment_tag
        ORDER BY 
            emr.equipment_id ASC;
        ", [
            'email1' => $userEmail,
            'email2' => $userEmail,
            'email3' => $userEmail,
            'email4' => $userEmail
        ]);


        $equipmentsReturned = DB::select("
        WITH equipments_multiple_rows AS (
            SELECT 
                e.equipment_id,
                e.equipment_tag,
                COALESCE(MAX(oet.elemental_tasks_id), MAX(oet.further_tasks_id)) AS equipment_all_tasks
            FROM 
                users u
            JOIN 
                construction_workstations cw ON u.user_name = cw.name_workstations
            JOIN 
                workstations_association_tasks wat ON cw.id_workstations = wat.id_workstations
            JOIN 
                equipments e ON wat.company_projects_id = e.company_projects_id
            JOIN 
                ordered_equipment_tasks oet ON e.equipment_id = oet.equipment_id
            WHERE 
                u.email = :email1
            AND 
                oet.execution_order = 1
            GROUP BY 
                e.equipment_id, 
                e.equipment_tag
        ),
        
        workstations_multiple_rows AS (
            SELECT 
                cw.id_workstations,
                cw.name_workstations,
                COALESCE(wat.elemental_tasks_id, wat.further_tasks_id) AS all_tasks
            FROM 
                users u
            JOIN 
                construction_workstations cw ON u.user_name = cw.name_workstations
            JOIN 
                workstations_association_tasks wat ON cw.id_workstations = wat.id_workstations
            WHERE 
                u.email = :email2
        ),
        
        workstations_control_all_tasks AS (
            SELECT 
                cew.control_equipment_workstation_id,
                cew.equipment_id,
                CASE 
                    WHEN cew.id_workstations IS NULL THEN NULL
                    WHEN cew.id_workstations IN (
                        SELECT wat.id_workstations
                        FROM workstations_association_tasks wat
                        JOIN construction_workstations cw ON wat.company_projects_id = cw.company_projects_id
                        JOIN users u ON u.user_name = cw.name_workstations
                        WHERE u.email = :email3
                    ) THEN cew.id_workstations
                    ELSE NULL
                END AS control_id_workstations,
                COALESCE(cew.elemental_tasks_id, cew.further_tasks_id) AS control_workstation_all_tasks,
                cew.equipment_comments_id,
                cew.entry_date,
                cew.departure_date
            FROM 
                control_equipment_workstation cew
            WHERE 
                cew.id_workstations IS NULL 
                OR cew.id_workstations IN (
                    SELECT wat.id_workstations
                    FROM workstations_association_tasks wat
                    JOIN construction_workstations cw ON wat.company_projects_id = cw.company_projects_id
                    JOIN users u ON u.user_name = cw.name_workstations
                    WHERE u.email = :email4
                )
        )
        
        SELECT 
            emr.equipment_id,
            emr.equipment_tag
        FROM 
            equipments_multiple_rows emr
        WHERE 
            emr.equipment_id IN (
                SELECT equipment_id
                FROM workstations_control_all_tasks
                WHERE control_id_workstations IS NULL
                AND entry_date IS NULL
                AND departure_date IS NULL
                AND control_workstation_all_tasks IN (SELECT all_tasks FROM workstations_multiple_rows)
                AND EXISTS (
                    SELECT 1
                    FROM workstations_control_all_tasks wc
                    WHERE wc.equipment_id = emr.equipment_id
                    AND wc.control_id_workstations IS NOT NULL
                    GROUP BY wc.equipment_id
                    HAVING COUNT(DISTINCT wc.control_id_workstations) >= 2
                )
            )
        GROUP BY 
            emr.equipment_id, 
            emr.equipment_tag
        ORDER BY 
            emr.equipment_id ASC;

        ", [

            'email1' => $userEmail,
            'email2' => $userEmail,
            'email3' => $userEmail,
            'email4' => $userEmail

        ]);


        $equipmentsDone = DB::select("
        WITH equipments_multiple_rows AS (
            SELECT 
                e.equipment_id,
                e.equipment_tag,
                COALESCE(MAX(oet.elemental_tasks_id), MAX(oet.further_tasks_id)) AS equipment_all_tasks
            FROM 
                users u
            JOIN 
                construction_workstations cw ON u.user_name = cw.name_workstations
            JOIN 
                workstations_association_tasks wat ON cw.id_workstations = wat.id_workstations
            JOIN 
                equipments e ON wat.company_projects_id = e.company_projects_id
            JOIN 
                ordered_equipment_tasks oet ON e.equipment_id = oet.equipment_id
            WHERE 
                u.email = :email1
            AND 
                oet.execution_order = 1
            GROUP BY 
                e.equipment_id, 
                e.equipment_tag
        ),
        
        workstations_multiple_rows AS (
            SELECT 
                cw.id_workstations,
                cw.name_workstations,
                COALESCE(wat.elemental_tasks_id, wat.further_tasks_id) AS all_tasks
            FROM 
                users u
            JOIN 
                construction_workstations cw ON u.user_name = cw.name_workstations
            JOIN 
                workstations_association_tasks wat ON cw.id_workstations = wat.id_workstations
            WHERE 
                u.email = :email2
        ),
        
        workstations_control_all_tasks AS (
            SELECT 
                cew.control_equipment_workstation_id,
                cew.equipment_id,
                CASE 
                    WHEN cew.id_workstations IS NULL THEN NULL
                    WHEN cew.id_workstations IN (
                        SELECT wat.id_workstations
                        FROM workstations_association_tasks wat
                        JOIN construction_workstations cw ON wat.company_projects_id = cw.company_projects_id
                        JOIN users u ON u.user_name = cw.name_workstations
                        WHERE u.email = :email3
                    ) THEN cew.id_workstations
                    ELSE NULL
                END AS control_id_workstations,
                COALESCE(cew.elemental_tasks_id, cew.further_tasks_id) AS control_workstation_all_tasks,
                cew.equipment_comments_id,
                cew.entry_date,
                cew.departure_date
            FROM 
                control_equipment_workstation cew
            WHERE 
                cew.id_workstations IS NULL 
                OR cew.id_workstations IN (
                    SELECT wat.id_workstations
                    FROM workstations_association_tasks wat
                    JOIN construction_workstations cw ON wat.company_projects_id = cw.company_projects_id
                    JOIN users u ON u.user_name = cw.name_workstations
                    WHERE u.email = :email4
                )
        )
        
        SELECT 
            emr.equipment_id,
            emr.equipment_tag
        FROM 
            equipments_multiple_rows emr
        WHERE 
            EXISTS (
                SELECT 1
                FROM workstations_control_all_tasks wc
                JOIN workstations_multiple_rows wmr ON wc.control_id_workstations = wmr.id_workstations
                WHERE wc.equipment_id = emr.equipment_id
                AND wc.control_workstation_all_tasks = wmr.all_tasks
                AND wc.entry_date IS NOT NULL
                AND wc.departure_date IS NOT NULL
                AND wc.control_id_workstations IS NOT NULL
            )
        AND NOT EXISTS (
            SELECT 1
            FROM workstations_control_all_tasks wc
            WHERE wc.equipment_id = emr.equipment_id
            AND wc.control_workstation_all_tasks IN (SELECT all_tasks FROM workstations_multiple_rows)
            AND wc.control_id_workstations IS NULL
        )
        GROUP BY 
            emr.equipment_id, 
            emr.equipment_tag
        ORDER BY 
            emr.equipment_id ASC;
        ", [
            'email1' => $userEmail,
            'email2' => $userEmail,
            'email3' => $userEmail,
            'email4' => $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
        $view->with([
            'equipmentsTodo' => $equipmentsTodo,
            'equipmentsTodoCount' => $equipmentsTodoCount,
            'equipmentsDone' => $equipmentsDone,
            'equipmentsDoneCount' => $equipmentsDoneCount,
            'equipmentsReturned' => $equipmentsReturned,
            'equipmentsReturnedCount' => $equipmentsReturnedCount,
            'workstationName' => $workstationName
        ]);
    }
}