<?php

namespace App\Repository;

use App\Entity\User;
use App\Entity\UsersOrganizations;
use App\Entity\Organizations;
use App\Entity\Roles;
use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
use Doctrine\Persistence\ManagerRegistry;

/**
 * @extends ServiceEntityRepository<UsersOrganizations>
 */
class UsersOrganizationsRepository extends ServiceEntityRepository
{
    public function __construct(ManagerRegistry $registry)
    {
        parent::__construct($registry, UsersOrganizations::class);
    }

    /**
     * Find all distinct active organizations for a given user ID.
     *
     * @param int $userId
     * @return UsersOrganizations[]
     */
    public function findAllDistinctOrganizationsByUserId(int $userId): array
    {
        return $this->createQueryBuilder('uo')
            ->select('DISTINCT uo')
            ->leftJoin('uo.organization', 'o')
            ->leftJoin('uo.role', 'r')
            ->addSelect('o', 'r')
            ->where('uo.users = :userId', 'uo.isActive = :isActive')
            ->setParameter('userId', $userId)
            ->setParameter('isActive', true)
            ->getQuery()
            ->getResult();
    }

    /**
     * Find all organizations where a user (by email) has a specific role.
     *
     * @param string $userEmail
     * @param string $roleName
     * @return Organizations[]
     */
    public function findOrganizationsByUserEmailAndRoleName(string $userEmail, string $roleName): array
    {
        $results = $this->createQueryBuilder('uo')
            ->innerJoin('uo.users', 'u')
            ->innerJoin('uo.organization', 'o')
            ->innerJoin('uo.role', 'r')
            ->where('u.email = :email')
            ->andWhere('r.name = :roleName')
            ->andWhere('uo.isActive = :isActive')
            ->andWhere('o.isActive = :orgIsActive')  // Check if organization is active
            ->setParameter('email', $userEmail)
            ->setParameter('roleName', $roleName)
            ->setParameter('isActive', true)
            ->setParameter('orgIsActive', true)      // Parameter for organization active status
            ->getQuery()
            ->getResult();

        return array_map(fn($uo) => $uo->getOrganization(), $results);
    }
    /**
     * Get all active users grouped by organization.
     * Users with no organization are grouped under 'autre'.
     *
     * @return array
     */
    public function getActiveUsersGroupedByOrganization(): array
    {
        $users = $this->getEntityManager()->getRepository(User::class)->getAllActiveUsers();
        $userOrgs = $this->getAllActiveUserOrganizationLinks();

        $userToOrgs = $this->mapUserToOrganizations($userOrgs);

        $orgs = [];
        foreach ($users as $user) {
            $userId = $user['id'];
            if (isset($userToOrgs[$userId])) {
                foreach ($userToOrgs[$userId] as $orgInfo) {
                    $orgId = $orgInfo['organization_id'];
                    if (!isset($orgs[$orgId])) {
                        $orgs[$orgId] = [
                            'organization_id' => $orgId,
                            'organization_name' => $orgInfo['organization_name'],
                            'users' => [],
                        ];
                    }
                    $orgs[$orgId]['users'][$userId] = $user;
                }
            } else {
                if (!isset($orgs['autre'])) {
                    $orgs['autre'] = [
                        'organization_id' => null,
                        'organization_name' => 'autre',
                        'users' => [],
                    ];
                }
                $orgs['autre']['users'][$userId] = $user;
            }
        }

        // Convert users arrays to indexed arrays
        foreach ($orgs as &$org) {
            $org['users'] = array_values($org['users']);
        }

        return array_values($orgs);
    }

    /**
     * Get all active users for each organization in the given array.
     *
     * @param Organizations[] $organizations
     * @return array
     */
    public function findActiveUsersByOrganizations(array $organizations): array
    {
        if (empty($organizations)) {
            return [];
        }

        $userOrgs = $this->getAllActiveUserOrganizationLinks($organizations);

        $usersByOrg = [];
        foreach ($userOrgs as $uo) {
            $org = $uo->getOrganization();
            $orgId = $org->getId();
            if (!isset($usersByOrg[$orgId])) {
                $usersByOrg[$orgId] = [
                    'organization_id' => $orgId,
                    'organization_name' => $org->getName(),
                    'users' => [],
                ];
            }
            $userId = $uo->getUsers()->getId();
            $usersByOrg[$orgId]['users'][$userId] = $uo->getUsers();
        }

        // Convert users arrays to indexed arrays
        foreach ($usersByOrg as &$org) {
            $org['users'] = array_values($org['users']);
        }

        return array_values($usersByOrg);
    }

    /**
     * Helper: Get all active UsersOrganizations links, optionally filtered by organizations.
     *
     * @param Organizations[]|null $organizations
     * @return UsersOrganizations[]
     */
    private function getAllActiveUserOrganizationLinks(array $organizations = null): array
    {
        $qb = $this->createQueryBuilder('uo')
            ->innerJoin('uo.organization', 'o')
            ->innerJoin('uo.users', 'u')
            ->where('uo.isActive = :isActive')
            ->setParameter('isActive', true);

        if (!empty($organizations)) {
            $qb->andWhere('o IN (:organizations)')
                ->setParameter('organizations', $organizations);
        }

        return $qb->getQuery()->getResult();
    }

    /**
     * Helper: Map userId to their organizations (id and name), avoiding duplicates.
     *
     * @param UsersOrganizations[] $userOrgs
     * @return array
     */
    private function mapUserToOrganizations(array $userOrgs): array
    {
        $userToOrgs = [];
        foreach ($userOrgs as $uo) {
            $userId = $uo->getUsers()->getId();
            $org = $uo->getOrganization();
            $orgId = $org->getId();
            $orgName = $org->getName();
            $userToOrgs[$userId][$orgId] = [
                'organization_id' => $orgId,
                'organization_name' => $orgName,
            ];
        }
        return $userToOrgs;
    }

    /**
     * Get the last 10 new active users for a specific organization.
     * Users are ordered by creation date (most recent first).
     *
     * @param Organizations $organization
     * @return array
     */
    public function getLastNewActiveUsersByOrganization(Organizations $organization): array
    {
        $results = $this->createQueryBuilder('uo')
            ->select('u.id', 'u.surname', 'u.name', 'u.email', 'u.pictureUrl', 'u.isActive', 'uo.createdAt')
            ->innerJoin('uo.users', 'u')
            ->innerJoin('uo.organization', 'o')
            ->where('uo.isActive = :isActive')
            ->andWhere('u.isActive = :userIsActive')
            ->andWhere('o.isActive = :orgIsActive')
            ->andWhere('uo.organization = :organization')
            ->setParameter('isActive', true)
            ->setParameter('userIsActive', true)
            ->setParameter('orgIsActive', true)
            ->setParameter('organization', $organization)
            ->orderBy('uo.createdAt', 'DESC')
            ->setMaxResults(10)
            ->getQuery()
            ->getResult();

        // Remove duplicates by user ID (in case user has multiple roles)
        $uniqueUsers = [];
        foreach ($results as $result) {
            $userId = $result['id'];
            if (!isset($uniqueUsers[$userId])) {
                $uniqueUsers[$userId] = $result;
            }
        }

        return array_values($uniqueUsers);
    }

    /**
     * Get all active admin users for a specific organization.
     * Returns users who have the 'ADMIN' role in the given organization.
     *
     * @param Organizations $organization
     * @return array
     */
    public function getAdminUsersByOrganization(Organizations $organization): array
    {
        $results = $this->createQueryBuilder('uo')
            ->select('u.id', 'u.surname', 'u.name', 'u.email', 'u.pictureUrl', 'u.isActive')
            ->innerJoin('uo.users', 'u')
            ->innerJoin('uo.organization', 'o')
            ->innerJoin('uo.role', 'r')
            ->where('uo.isActive = :isActive')
            ->andWhere('u.isActive = :userIsActive')
            ->andWhere('o.isActive = :orgIsActive')
            ->andWhere('uo.organization = :organization')
            ->andWhere('r.name = :roleName')
            ->setParameter('isActive', true)
            ->setParameter('userIsActive', true)
            ->setParameter('orgIsActive', true)
            ->setParameter('organization', $organization)
            ->setParameter('roleName', 'ADMIN')
            ->orderBy('u.surname', 'ASC')
            ->getQuery()
            ->getResult();

        // Remove duplicates by user ID (in case user has multiple admin-related roles)
        $uniqueUsers = [];
        foreach ($results as $result) {
            $userId = $result['id'];
            if (!isset($uniqueUsers[$userId])) {
                $uniqueUsers[$userId] = $result;
            }
        }

        return array_values($uniqueUsers);
    }
}