<?php

namespace App\Controller\Reporting;

use App\Repository\TeamRepository;
use DateTime;
use Doctrine\DBAL\Connection;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Attribute\Route;
use Symfony\Component\Security\Http\Attribute\IsGranted;

#[Route(path: '/reporting')]
#[IsGranted('view_reporting')]
final class TeamSummaryController extends AbstractController
{
    public function __construct(
        private Connection $connection,
        private TeamRepository $teamRepository,
    ) {}

    #[Route(path: '/team_summary', name: 'report_team_summary', methods: ['GET'])]
    public function summary(Request $request): Response
    {
        $teams = $this->teamRepository->findAll();

        $selectedTeamId = $request->query->getInt('team', 0);
        $from = $request->query->get('from', (new DateTime('first day of this month'))->format('Y-m-d'));
        $to   = $request->query->get('to', (new DateTime('last day of this month'))->format('Y-m-d'));

        $team = null;
        $rows = [];
        $projectRows = [];
        $userColumns = [];
        $nonbillRows = [];
        $userColumnsNB = [];

        if ($selectedTeamId > 0) {
            $team = $this->teamRepository->find($selectedTeamId);
            if ($team) {
                $rows = $this->getUserTimeAnalysis($selectedTeamId, $from, $to);
                [$projectRows, $userColumns] = $this->getProjectPivot($selectedTeamId, $from, $to, '= 1');
                [$nonbillRows, $userColumnsNB] = $this->getProjectPivot($selectedTeamId, $from, $to, '= 0');
                [$unprodRows, $userColumnsUP] = $this->getProjectPivot($selectedTeamId, $from, $to, '= 2');
            }
        }

        return $this->render('reporting/team_summary.html.twig', [
            'report_title' => 'report_team_summary',
            'teams' => $teams,
            'team' => $team,
            'rows' => $rows,
            'projectRows' => $projectRows,
            'userColumns' => $userColumns,
            'nonbillRows' => $nonbillRows,
            'userColumnsNB' => $userColumnsNB,
            'unprodRows' => $unprodRows,
            'userColumnsUP' => $userColumnsUP,
            'from' => $from,
            'to' => $to,
            'selectedTeamId' => $selectedTeamId,
        ]);
    }

    private function getUserTimeAnalysis(int $teamId, string $from, string $to): array
    {
        $sql = "SELECT
            u.username,
            u.alias,
            COALESCE(SUM(CASE WHEN p.billable = 1 THEN ts.duration END), 0) / 3600 AS billable_hours,
            COALESCE(SUM(CASE WHEN p.billable = 0 THEN ts.duration END), 0) / 3600 AS nonbillable_hours,
            COALESCE(SUM(CASE WHEN p.billable IS NULL OR p.billable NOT IN (0,1) THEN ts.duration END), 0) / 3600 AS unproductive_hours,
            COALESCE(SUM(ts.duration), 0) / 3600 AS total_hours
        FROM kimai2_users u
        JOIN kimai2_users_teams ut ON u.id = ut.user_id
        LEFT JOIN kimai2_timesheet ts ON u.id = ts.user
            AND DATE(ts.start_time) >= :from
            AND DATE(ts.start_time) <= :to
        LEFT JOIN kimai2_projects p ON ts.project_id = p.id
        WHERE ut.team_id = :teamId AND u.enabled = 1
        GROUP BY u.id, u.username, u.alias
        HAVING total_hours > 0
        ORDER BY u.alias";

        return $this->connection->executeQuery($sql, [
            'teamId' => $teamId, 'from' => $from, 'to' => $to
        ])->fetchAllAssociative();
    }

    private function getProjectPivot(int $teamId, string $from, string $to, string $billableComparison): array
    {
        $userSql = "SELECT u.id, u.alias FROM kimai2_users u
            JOIN kimai2_users_teams ut ON u.id = ut.user_id
            WHERE ut.team_id = :teamId AND u.enabled = 1 ORDER BY u.alias";
        $users = $this->connection->executeQuery($userSql, ['teamId' => $teamId])->fetchAllAssociative();
        $userColumns = array_column($users, 'alias');

        $sql = "SELECT
            c.name AS company,
            p.name AS project,
            COALESCE(SUM(ts.duration), 0) / 3600 AS project_total,
            u.alias AS user_alias
        FROM kimai2_timesheet ts
        JOIN kimai2_users u ON ts.user = u.id
        JOIN kimai2_projects p ON ts.project_id = p.id
        JOIN kimai2_customers c ON p.customer_id = c.id
        JOIN kimai2_users_teams ut ON u.id = ut.user_id
        WHERE ut.team_id = :teamId
            AND DATE(ts.start_time) >= :from
            AND DATE(ts.start_time) <= :to
            AND p.billable " . $billableComparison . "
        GROUP BY c.id, p.id, u.id
        ORDER BY c.name, p.name";

        $raw = $this->connection->executeQuery($sql, [
            'teamId' => $teamId, 'from' => $from, 'to' => $to
        ])->fetchAllAssociative();

        $projectRows = [];
        foreach ($raw as $row) {
            $key = $row['company'] . '|||' . $row['project'];
            if (!isset($projectRows[$key])) {
                $projectRows[$key] = [
                    'company' => $row['company'],
                    'project' => $row['project'],
                    'users' => [],
                    'total' => 0,
                ];
            }
            $projectRows[$key]['users'][$row['user_alias']] = round($row['project_total'], 2);
            $projectRows[$key]['total'] += round($row['project_total'], 2);
        }

        return [array_values($projectRows), $userColumns];
    }
}