<?php

use MintyPHP\Buffer;
use MintyPHP\Support\Guard;
use MintyPHP\Service\TenantService;
use MintyPHP\Service\DepartmentService;
use MintyPHP\Service\RoleService;
use MintyPHP\Service\UserService;
use MintyPHP\Service\PermissionService;
use MintyPHP\Repository\PermissionRepository;
use MintyPHP\Repository\MailLogRepository;
use MintyPHP\DB;

Guard::requirePermissionOrForbidden(PermissionService::STATS_VIEW);

// Basic counts
$tenants = TenantService::list();
$tenantCount = count($tenants);

$departments = DepartmentService::list();
$departmentCount = count($departments);

$roles = RoleService::list();
$roleCount = count($roles);

$users = UserService::list();
$userCount = count($users);

$permissions = PermissionRepository::list();
$permissionCount = count($permissions);

// User stats (active/inactive)
$activeUserCount = 0;
$inactiveUserCount = 0;
foreach ($users as $user) {
    $isActive = (int) ($user['active'] ?? 1);
    if ($isActive === 1) {
        $activeUserCount++;
    } else {
        $inactiveUserCount++;
    }
}

// Organization breakdown (per tenant)
$tenantBreakdown = [];

// Load user-tenant assignments
$userTenantAssignments = [];
$userTenantRows = DB::select('select user_id, tenant_id from user_tenants');
if (is_array($userTenantRows)) {
    foreach ($userTenantRows as $row) {
        $data = $row['user_tenants'] ?? $row;
        $userId = (int) ($data['user_id'] ?? 0);
        $tenantId = (int) ($data['tenant_id'] ?? 0);
        if ($userId > 0 && $tenantId > 0) {
            if (!isset($userTenantAssignments[$userId])) {
                $userTenantAssignments[$userId] = [];
            }
            $userTenantAssignments[$userId][] = $tenantId;
        }
    }
}

// Load tenant-department assignments
$tenantDepartmentAssignments = [];
$tenantDepartmentRows = DB::select('select tenant_id, department_id from tenant_departments');
if (is_array($tenantDepartmentRows)) {
    foreach ($tenantDepartmentRows as $row) {
        $data = $row['tenant_departments'] ?? $row;
        $tenantId = (int) ($data['tenant_id'] ?? 0);
        $departmentId = (int) ($data['department_id'] ?? 0);
        if ($tenantId > 0 && $departmentId > 0) {
            if (!isset($tenantDepartmentAssignments[$tenantId])) {
                $tenantDepartmentAssignments[$tenantId] = [];
            }
            $tenantDepartmentAssignments[$tenantId][] = $departmentId;
        }
    }
}

foreach ($tenants as $tenant) {
    $tenantId = (int) ($tenant['id'] ?? 0);
    if ($tenantId === 0) {
        continue;
    }

    // Count departments for this tenant
    $deptCount = 0;
    $tenantDepartmentIds = $tenantDepartmentAssignments[$tenantId] ?? [];
    foreach ($departments as $dept) {
        $deptId = (int) ($dept['id'] ?? 0);
        if ($deptId > 0 && in_array($deptId, $tenantDepartmentIds, true)) {
            $deptCount++;
        }
    }

    // Count users for this tenant
    $totalUsers = 0;
    $activeUsers = 0;
    $inactiveUsers = 0;
    foreach ($users as $user) {
        $userId = (int) ($user['id'] ?? 0);
        if ($userId === 0) {
            continue;
        }

        // Check if user is assigned to this tenant
        $userTenantIds = $userTenantAssignments[$userId] ?? [];
        if (in_array($tenantId, $userTenantIds, true)) {
            $totalUsers++;
            $isActive = (int) ($user['active'] ?? 1);
            if ($isActive === 1) {
                $activeUsers++;
            } else {
                $inactiveUsers++;
            }
        }
    }

    $tenantBreakdown[] = [
        'id' => $tenantId,
        'uuid' => $tenant['uuid'] ?? '',
        'description' => $tenant['description'] ?? '',
        'departments' => $deptCount,
        'total_users' => $totalUsers,
        'active_users' => $activeUsers,
        'inactive_users' => $inactiveUsers,
    ];
}

// Sort by description
usort($tenantBreakdown, function ($a, $b) {
    return strcmp((string) ($a['description'] ?? ''), (string) ($b['description'] ?? ''));
});

// Mail log stats
$mailLogTotalCount = DB::selectValue('select count(*) from mail_log');
$mailLogTotalCount = $mailLogTotalCount ? (int) $mailLogTotalCount : 0;

$mailLogSentCount = DB::selectValue("select count(*) from mail_log where status = 'sent'");
$mailLogSentCount = $mailLogSentCount ? (int) $mailLogSentCount : 0;

$mailLogFailedCount = DB::selectValue("select count(*) from mail_log where status = 'failed'");
$mailLogFailedCount = $mailLogFailedCount ? (int) $mailLogFailedCount : 0;

$mailLogQueuedCount = DB::selectValue("select count(*) from mail_log where status = 'queued'");
$mailLogQueuedCount = $mailLogQueuedCount ? (int) $mailLogQueuedCount : 0;

// Mail log stats (last 24h)
$mailLogTotal24hCount = DB::selectValue("select count(*) from mail_log where created_at >= NOW() - INTERVAL 24 HOUR");
$mailLogTotal24hCount = $mailLogTotal24hCount ? (int) $mailLogTotal24hCount : 0;

$mailLogSent24hCount = DB::selectValue("select count(*) from mail_log where status = 'sent' and created_at >= NOW() - INTERVAL 24 HOUR");
$mailLogSent24hCount = $mailLogSent24hCount ? (int) $mailLogSent24hCount : 0;

$mailLogFailed24hCount = DB::selectValue("select count(*) from mail_log where status = 'failed' and created_at >= NOW() - INTERVAL 24 HOUR");
$mailLogFailed24hCount = $mailLogFailed24hCount ? (int) $mailLogFailed24hCount : 0;

$mailLogQueued24hCount = DB::selectValue("select count(*) from mail_log where status = 'queued' and created_at >= NOW() - INTERVAL 24 HOUR");
$mailLogQueued24hCount = $mailLogQueued24hCount ? (int) $mailLogQueued24hCount : 0;

// Calculate date range for last 24 hours
$date24hAgo = gmdate('Y-m-d', strtotime('-24 hours'));
$dateToday = gmdate('Y-m-d');

Buffer::set('title', t('Statistics'));