<?php
/* Copyright (C) 2026 Eduard Wisch <data@data-it-solution.de>
 *
 * Get related documents for document browser
 */

if (!defined('NOTOKENRENEWAL')) {
	define('NOTOKENRENEWAL', '1');
}
if (!defined('NOREQUIREMENU')) {
	define('NOREQUIREMENU', '1');
}
if (!defined('NOREQUIREAJAX')) {
	define('NOREQUIREAJAX', '1');
}

// Load Dolibarr environment
$res = 0;
// Path from /custom/filearchiv/ajax/ to main.inc.php
if (!$res && file_exists("../../../main.inc.php")) {
	$res = @include "../../../main.inc.php";
}
// Fallback for different directory structures
if (!$res && file_exists("../../../../main.inc.php")) {
	$res = @include "../../../../main.inc.php";
}
if (!$res && file_exists("../../main.inc.php")) {
	$res = @include "../../main.inc.php";
}
if (!$res) {
	die("Include of main fails");
}

require_once DOL_DOCUMENT_ROOT.'/core/lib/files.lib.php';

// Debug logging
$debugFile = '/tmp/filearchiv_getdocs_debug.log';
@file_put_contents($debugFile, date('Y-m-d H:i:s') . " === getdocuments.php called ===\n", FILE_APPEND);

// Security check
if (!isModEnabled('filearchiv')) {
	http_response_code(403);
	echo json_encode(array('success' => false, 'error' => 'Module not enabled'));
	exit;
}

$element = GETPOST('element', 'aZ09');
$id = GETPOST('id', 'int');

if (empty($element) || empty($id)) {
	echo json_encode(array('success' => false, 'error' => 'Missing parameters'));
	exit;
}

$langs->load('filearchiv@filearchiv');

// Get the main object
$object = null;
$thirdparty = null;

switch ($element) {
	case 'propal':
		require_once DOL_DOCUMENT_ROOT.'/comm/propal/class/propal.class.php';
		$object = new Propal($db);
		$object->fetch($id);
		$object->fetch_thirdparty();
		$thirdparty = $object->thirdparty;
		break;
	case 'commande':
		require_once DOL_DOCUMENT_ROOT.'/commande/class/commande.class.php';
		$object = new Commande($db);
		$object->fetch($id);
		$object->fetch_thirdparty();
		$thirdparty = $object->thirdparty;
		break;
	case 'facture':
		require_once DOL_DOCUMENT_ROOT.'/compta/facture/class/facture.class.php';
		$object = new Facture($db);
		$object->fetch($id);
		$object->fetch_thirdparty();
		$thirdparty = $object->thirdparty;
		break;
	case 'expedition':
		require_once DOL_DOCUMENT_ROOT.'/expedition/class/expedition.class.php';
		$object = new Expedition($db);
		$object->fetch($id);
		$object->fetch_thirdparty();
		$thirdparty = $object->thirdparty;
		break;
	case 'order_supplier':
		require_once DOL_DOCUMENT_ROOT.'/fourn/class/fournisseur.commande.class.php';
		$object = new CommandeFournisseur($db);
		$object->fetch($id);
		$object->fetch_thirdparty();
		$thirdparty = $object->thirdparty;
		break;
	case 'invoice_supplier':
		require_once DOL_DOCUMENT_ROOT.'/fourn/class/fournisseur.facture.class.php';
		$object = new FactureFournisseur($db);
		$object->fetch($id);
		$object->fetch_thirdparty();
		$thirdparty = $object->thirdparty;
		break;
	default:
		echo json_encode(array('success' => false, 'error' => 'Unknown element type'));
		exit;
}

if (!$object || !$object->id) {
	echo json_encode(array('success' => false, 'error' => 'Object not found'));
	exit;
}

@file_put_contents($debugFile, "Element: $element, ID: $id\n", FILE_APPEND);
@file_put_contents($debugFile, "Object ref: " . $object->ref . ", entity: " . $object->entity . "\n", FILE_APPEND);
@file_put_contents($debugFile, "Thirdparty: " . ($thirdparty ? $thirdparty->id . " - " . $thirdparty->name : "none") . "\n", FILE_APPEND);

$categories = array();

// 1. Customer/Supplier documents
if ($thirdparty && $thirdparty->id) {
	$socdir = $conf->societe->multidir_output[$thirdparty->entity] . '/' . dol_sanitizeFileName($thirdparty->id);
	@file_put_contents($debugFile, "Societe dir: $socdir (exists: " . (is_dir($socdir) ? "yes" : "no") . ")\n", FILE_APPEND);
	$files = getDocumentsForPath($socdir, $debugFile);
	if (!empty($files)) {
		$categories[] = array(
			'title' => $langs->trans('CustomerDocuments'),
			'icon' => 'fa-building',
			'files' => $files
		);
	}
}

// 2. Current object documents
$objdir = '';
switch ($element) {
	case 'propal':
		$objdir = $conf->propal->multidir_output[$object->entity] . '/' . dol_sanitizeFileName($object->ref);
		break;
	case 'commande':
		$objdir = $conf->commande->multidir_output[$object->entity] . '/' . dol_sanitizeFileName($object->ref);
		break;
	case 'facture':
		$objdir = $conf->facture->multidir_output[$object->entity] . '/' . dol_sanitizeFileName($object->ref);
		break;
	case 'expedition':
		$objdir = $conf->expedition->dir_output . '/sending/' . dol_sanitizeFileName($object->ref);
		break;
	case 'order_supplier':
		$objdir = $conf->fournisseur->commande->multidir_output[$object->entity] . '/' . dol_sanitizeFileName($object->ref);
		break;
	case 'invoice_supplier':
		$objdir = $conf->fournisseur->facture->multidir_output[$object->entity] . '/' . get_exdir($object->id, 2, 0, 0, $object, 'invoice_supplier') . dol_sanitizeFileName($object->ref);
		break;
}

if ($objdir) {
	@file_put_contents($debugFile, "Object dir: $objdir (exists: " . (is_dir($objdir) ? "yes" : "no") . ")\n", FILE_APPEND);
	$files = getDocumentsForPath($objdir, $debugFile);
	@file_put_contents($debugFile, "Files found: " . count($files) . "\n", FILE_APPEND);
	if (!empty($files)) {
		$titleKey = ucfirst($element) . 'Documents';
		$categories[] = array(
			'title' => $langs->trans($titleKey),
			'icon' => getIconForElement($element),
			'files' => $files
		);
	}
}

// 3. Product documents from object lines
$productFiles = array();
@file_put_contents($debugFile, "Lines count: " . (isset($object->lines) ? count($object->lines) : "not set") . "\n", FILE_APPEND);
if (!empty($object->lines)) {
	foreach ($object->lines as $line) {
		if (!empty($line->fk_product) && $line->fk_product > 0) {
			$proddir = $conf->product->multidir_output[$conf->entity] . '/' . dol_sanitizeFileName($line->fk_product);
			@file_put_contents($debugFile, "Product dir: $proddir\n", FILE_APPEND);
			$files = getDocumentsForPath($proddir, $debugFile);
			foreach ($files as $file) {
				$file['product_ref'] = $line->ref;
				$file['product_label'] = $line->product_label;
				$productFiles[] = $file;
			}
		}
	}
}
if (!empty($productFiles)) {
	$categories[] = array(
		'title' => $langs->trans('ProductDocuments'),
		'icon' => 'fa-cube',
		'files' => $productFiles
	);
}

header('Content-Type: application/json; charset=UTF-8');
echo json_encode(array('success' => true, 'categories' => $categories));

/**
 * Get documents from a directory path
 *
 * @param string $path Directory path
 * @param string $debugFile Debug file path (optional)
 * @return array Array of file info
 */
function getDocumentsForPath($path, $debugFile = null)
{
	global $langs;

	$files = array();

	if (!is_dir($path)) {
		if ($debugFile) {
			@file_put_contents($debugFile, "  Path not a dir: $path\n", FILE_APPEND);
		}
		return $files;
	}

	if ($debugFile) {
		@file_put_contents($debugFile, "  Scanning dir: $path\n", FILE_APPEND);
	}

	$filearray = dol_dir_list($path, 'files', 0, '', '(\.meta|_preview.*\.png)$');

	foreach ($filearray as $file) {
		$files[] = array(
			'name' => $file['name'],
			'fullpath' => $file['fullname'],
			'relativepath' => $file['relativename'],
			'size' => $file['size'],
			'size_formatted' => dol_print_size($file['size']),
			'date' => dol_print_date($file['date'], 'day'),
			'icon' => getIconForFile($file['name'])
		);
	}

	return $files;
}

/**
 * Get Font Awesome icon for file type
 *
 * @param string $filename Filename
 * @return string Icon class
 */
function getIconForFile($filename)
{
	$ext = strtolower(pathinfo($filename, PATHINFO_EXTENSION));

	$icons = array(
		'pdf' => 'fa-file-pdf',
		'doc' => 'fa-file-word',
		'docx' => 'fa-file-word',
		'xls' => 'fa-file-excel',
		'xlsx' => 'fa-file-excel',
		'ppt' => 'fa-file-powerpoint',
		'pptx' => 'fa-file-powerpoint',
		'jpg' => 'fa-file-image',
		'jpeg' => 'fa-file-image',
		'png' => 'fa-file-image',
		'gif' => 'fa-file-image',
		'zip' => 'fa-file-archive',
		'rar' => 'fa-file-archive',
		'txt' => 'fa-file-alt',
		'csv' => 'fa-file-csv',
	);

	return isset($icons[$ext]) ? $icons[$ext] : 'fa-file';
}

/**
 * Get icon for element type
 *
 * @param string $element Element type
 * @return string Icon class
 */
function getIconForElement($element)
{
	$icons = array(
		'propal' => 'fa-file-signature',
		'commande' => 'fa-file-invoice',
		'facture' => 'fa-file-invoice-dollar',
		'expedition' => 'fa-truck',
		'order_supplier' => 'fa-shopping-cart',
		'invoice_supplier' => 'fa-file-invoice',
	);

	return isset($icons[$element]) ? $icons[$element] : 'fa-file';
}