<?php
    session_start();
    require_once '../../../assets/utils/db_auth.php';
    require_role($user_role, ['owner', 'admin', 'staff']);
    require_once '../../../assets/utils/classes/InvoiceManager.php';

    $id       = (int)($data['id'] ?? ($data['invoice_id'] ?? 0));
    $due_date = trim((string)($data['due_date'] ?? ''));

    if (!$id) {
        $answer['message'] = 'Invalid ID.';
        http_response_code(400);
        exit(json_encode($answer));
    }

    $posting_map = [
        'invoice'              => 'InvoicePosting',
        'credit_note'          => 'CreditNotePosting',
        'purchase_invoice'     => 'PurchaseInvoicePosting',
        'supplier_credit_note' => 'SupplierCreditNotePosting',
    ];

    try {
        dbTransaction($pdo2, function($pdo) use ($id, $due_date, $company_id, $logging) {
            $inv = new InvoiceManager($pdo, $company_id);
            $inv->issueInvoice($id, $logging, $due_date ?: null);
        });

        $answer['success'] = 1;
        $answer['message'] = 'Invoice issued.';

        // Auto-post GL for this document
        $sth = $pdo2->prepare("SELECT doc_type, formula_id FROM td_invoice WHERE company_id = :cid AND id = :id LIMIT 1");
        $sth->execute([':cid' => $company_id, ':id' => $id]);
        $doc = $sth->fetch(PDO::FETCH_ASSOC);

        if ($doc && isset($posting_map[$doc['doc_type']])) {
            try {
                $class_name = $posting_map[$doc['doc_type']];
                require_once '../../../assets/utils/classes_ac/posting/BasePosting.php';
                require_once '../../../assets/utils/classes_ac/posting/' . $class_name . '.php';
                require_once '../../../assets/utils/notify_node.php';

                $posting  = new $class_name($pdo2, $company_id);
                $built    = $posting->build($id, $doc['formula_id'] ?: null);

                $guard    = new PostingWindowGuard($pdo1, $company_id);
                $gl       = new GlManager($pdo2, $company_id, $guard);
                $meta     = ['journal_date' => $built['doc_date'] ?? null];
                $existing = $gl->getBySource($doc['doc_type'], $id);

                $pdo2->beginTransaction();
                if ($existing) {
                    $gl->replace($doc['doc_type'], $id, $built['formula_id'], $built['period'], $built['lines'], $meta);
                } else {
                    $gl->post($doc['doc_type'], $id, $built['formula_id'], $built['period'], $built['lines'], $meta);
                }
                $pdo2->commit();

                notify_node('gl_posted', ['doc_type' => $doc['doc_type'], 'id' => $id, 'action' => 'posted'], $company_id);
                $answer['gl_posted'] = true;
            } catch (Exception $e) {
                if ($pdo2->inTransaction()) $pdo2->rollBack();
                $answer['gl_posted'] = false;
                $answer['gl_message'] = $e->getMessage();
                error_log("auto_gl [{$doc['doc_type']}#{$id}]: " . $e->getMessage());
            }
        }

    } catch (PDOException $e) {
        $answer['message'] = 'Database error, please try again.';
        http_response_code(500);

    } catch (Exception $e) {
        $answer['message'] = $e->getMessage();
        http_response_code(400);
    }

    exit(json_encode($answer));
?>