<?php
/**
 * Company Monthly Stats & JoFotara Status
 */

use App\Core\Database;
use App\Middleware\AuthMiddleware;

// 1. Auth Check
$decoded = AuthMiddleware::check();
$db = Database::getInstance();

$companyId = $_GET['id'] ?? null;
if (!$companyId) json_error('Company ID is required', 422);

$tenantId = $decoded['tenant_id'];

try {
    // 2. Permission Check
    $stmt = $db->prepare("SELECT id, name, tax_identification_number, is_active, 
                                 (jofotara_client_id_encrypted IS NOT NULL) as is_jofotara_connected,
                                 jofotara_income_source_sequence
                          FROM companies WHERE id = ? AND tenant_id = ?");
    $stmt->execute([$companyId, $tenantId]);
    $company = $stmt->fetch();

    if (!$company) json_error('Company not found', 404);

    // 3. Monthly Invoice Stats
    $stmtStats = $db->prepare("
        SELECT 
            DATE_FORMAT(invoice_date, '%Y-%m') as month,
            COUNT(*) as total_invoices,
            SUM(CASE WHEN status='approved' THEN 1 ELSE 0 END) as approved_count,
            SUM(grand_total) as total_amount
        FROM invoices
        WHERE company_id = ? AND deleted_at IS NULL
        GROUP BY month
        ORDER BY month DESC
        LIMIT 12
    ");
    $stmtStats->execute([$companyId]);
    $monthly = $stmtStats->fetchAll();

    // 4. Lifetime Totals
    $stmtTotals = $db->prepare("
        SELECT 
            COUNT(*) as total_invoices,
            SUM(grand_total) as total_amount,
            SUM(tax_amount) as total_tax,
            SUM(CASE WHEN status='approved' THEN 1 ELSE 0 END) as approved_count
        FROM invoices
        WHERE company_id = ? AND deleted_at IS NULL
    ");
    $stmtTotals->execute([$companyId]);
    $totals = $stmtTotals->fetch();

    json_success([
        'company' => $company,
        'monthly' => $monthly,
        'totals'  => $totals
    ]);

} catch (\Exception $e) {
    error_log("Company Stats Error: " . $e->getMessage());
    json_error('Server error', 500);
}