<?php
/* Copyright (C) 2026 Alles Watt lauft
 *
 * PDF Export for Anlage Tree
 */

$res = 0;
if (!$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 && file_exists("../../../../main.inc.php")) $res = @include "../../../../main.inc.php";
if (!$res) die("Include of main fails");

require_once DOL_DOCUMENT_ROOT.'/core/lib/pdf.lib.php';
require_once DOL_DOCUMENT_ROOT.'/societe/class/societe.class.php';
require_once DOL_DOCUMENT_ROOT.'/contact/class/contact.class.php';
dol_include_once('/kundenkarte/class/anlage.class.php');
dol_include_once('/kundenkarte/class/anlagetype.class.php');
dol_include_once('/kundenkarte/class/anlagefile.class.php');

$langs->loadLangs(array('companies', 'kundenkarte@kundenkarte'));

// Get parameters
$socId = GETPOSTINT('socid');
$contactId = GETPOSTINT('contactid');
$systemId = GETPOSTINT('system');

// Security check
if (!$user->hasRight('kundenkarte', 'read')) {
	accessforbidden();
}

// Load company
$societe = new Societe($db);
$societe->fetch($socId);

// Load contact if specified
$contact = null;
if ($contactId > 0) {
	$contact = new Contact($db);
	$contact->fetch($contactId);
}

// Load system info
$systemLabel = '';
$sql = "SELECT label FROM ".MAIN_DB_PREFIX."c_kundenkarte_anlage_system WHERE rowid = ".((int) $systemId);
$resql = $db->query($sql);
if ($resql && $obj = $db->fetch_object($resql)) {
	$systemLabel = $obj->label;
}

// Load tree
$anlage = new Anlage($db);
if ($contactId > 0) {
	$tree = $anlage->fetchTreeByContact($socId, $contactId, $systemId);
} else {
	$tree = $anlage->fetchTree($socId, $systemId);
}

// Load all type fields for display (including headers)
$typeFieldsMap = array();
$sql = "SELECT f.*, f.fk_anlage_type FROM ".MAIN_DB_PREFIX."kundenkarte_anlage_type_field f WHERE f.active = 1 ORDER BY f.position ASC";
$resql = $db->query($sql);
if ($resql) {
	while ($obj = $db->fetch_object($resql)) {
		if (!isset($typeFieldsMap[$obj->fk_anlage_type])) {
			$typeFieldsMap[$obj->fk_anlage_type] = array();
		}
		$typeFieldsMap[$obj->fk_anlage_type][] = $obj;
	}
}

// Create PDF
$pdf = pdf_getInstance();
$pdf->SetCreator('Dolibarr - Kundenkarte');
$pdf->SetAuthor($user->getFullName($langs));

$title = $systemLabel.' - '.$societe->name;
if ($contact) {
	$title .= ' - '.$contact->getFullName($langs);
}
$pdf->SetTitle($title);

$pdf->SetMargins(15, 15, 15);
$pdf->SetAutoPageBreak(true, 15);
$pdf->SetFont('dejavusans', '', 9);

// Check for PDF template
$tplidx = null;
$templateFile = $conf->kundenkarte->dir_output.'/templates/export_template.pdf';
if (file_exists($templateFile) && is_readable($templateFile)) {
	try {
		$pagecount = $pdf->setSourceFile($templateFile);
		$tplidx = $pdf->importPage(1);
	} catch (Exception $e) {
		// Template could not be loaded, continue without
		$tplidx = null;
	}
}

$pdf->AddPage();
if (!empty($tplidx)) {
	$pdf->useTemplate($tplidx);
}

// Compact header - left aligned
$pdf->SetFont('dejavusans', 'B', 14);
$pdf->Cell(120, 6, $systemLabel, 0, 1, 'L');

$pdf->SetFont('dejavusans', '', 9);
$pdf->SetTextColor(80, 80, 80);

// Customer info in one compact block
$customerInfo = $societe->name;
if ($contact) {
	$customerInfo .= ' | '.$contact->getFullName($langs);
}
$pdf->Cell(120, 4, $customerInfo, 0, 1, 'L');

// Address
$address = array();
if ($societe->address) $address[] = $societe->address;
if ($societe->zip || $societe->town) $address[] = trim($societe->zip.' '.$societe->town);
if (!empty($address)) {
	$pdf->Cell(120, 4, implode(', ', $address), 0, 1, 'L');
}

// Date and count
$totalElements = countTreeElements($tree);
$pdf->Cell(120, 4, dol_print_date(dol_now(), 'day').' | '.$totalElements.' Elemente', 0, 1, 'L');

$pdf->SetTextColor(0, 0, 0);
$pdf->Ln(2);

// Separator line
$pdf->SetDrawColor(200, 200, 200);
$pdf->Line(15, $pdf->GetY(), $pdf->getPageWidth() - 15, $pdf->GetY());
$pdf->Ln(4);

// Get font size settings
$fontSettings = array(
	'header' => getDolGlobalInt('KUNDENKARTE_PDF_FONT_HEADER', 9),
	'content' => getDolGlobalInt('KUNDENKARTE_PDF_FONT_CONTENT', 7),
	'fields' => getDolGlobalInt('KUNDENKARTE_PDF_FONT_FIELDS', 7)
);

// Draw tree
if (!empty($tree)) {
	drawTreePdf($pdf, $tree, $typeFieldsMap, $langs, 0, $tplidx, $fontSettings);
} else {
	$pdf->SetFont('dejavusans', 'I', 10);
	$pdf->Cell(0, 10, $langs->trans('NoInstallations'), 0, 1);
}

/**
 * Count total elements in tree
 */
function countTreeElements($nodes) {
	$count = 0;
	if (!empty($nodes)) {
		foreach ($nodes as $node) {
			$count++;
			if (!empty($node->children)) {
				$count += countTreeElements($node->children);
			}
		}
	}
	return $count;
}

// Output PDF
$filename = 'Export_'.$systemLabel.'_'.dol_sanitizeFileName($societe->name);
if ($contact) {
	$filename .= '_'.dol_sanitizeFileName($contact->lastname);
}
$filename .= '_'.date('Y-m-d').'.pdf';

$pdf->Output($filename, 'D');

/**
 * Draw tree recursively in PDF with visual hierarchy
 */
function drawTreePdf(&$pdf, $nodes, $typeFieldsMap, $langs, $level = 0, $tplidx = null, $fontSettings = null)
{
	// Default font settings if not provided
	if ($fontSettings === null) {
		$fontSettings = array('header' => 9, 'content' => 7, 'fields' => 7);
	}

	$indent = $level * 12;
	$leftMargin = 15;
	$pageWidth = $pdf->getPageWidth() - 30;
	$contentWidth = $pageWidth - $indent;

	// Subtle gray tones - darker for higher levels, lighter for deeper levels
	$levelColors = array(
		0 => array('bg' => array(70, 70, 70), 'border' => array(50, 50, 50)),      // Dark gray
		1 => array('bg' => array(100, 100, 100), 'border' => array(80, 80, 80)),   // Medium dark
		2 => array('bg' => array(130, 130, 130), 'border' => array(110, 110, 110)), // Medium
		3 => array('bg' => array(150, 150, 150), 'border' => array(130, 130, 130)), // Medium light
		4 => array('bg' => array(170, 170, 170), 'border' => array(150, 150, 150)), // Light gray
	);
	$colorIndex = min($level, count($levelColors) - 1);
	$colors = $levelColors[$colorIndex];

	$nodeCount = count($nodes);
	$nodeIndex = 0;

	foreach ($nodes as $node) {
		$nodeIndex++;
		$isLast = ($nodeIndex == $nodeCount);

		// Calculate content height to check page break
		$estimatedHeight = 12; // Header height
		$fieldValues = $node->getFieldValues();
		if (!empty($typeFieldsMap[$node->fk_anlage_type])) {
			foreach ($typeFieldsMap[$node->fk_anlage_type] as $fieldDef) {
				if ($fieldDef->field_type === 'header') {
					$estimatedHeight += 5;
				} else {
					$value = isset($fieldValues[$fieldDef->field_code]) ? $fieldValues[$fieldDef->field_code] : '';
					if ($value !== '') $estimatedHeight += 4;
				}
			}
		}
		if ($node->note_private) $estimatedHeight += 8;
		if ($node->image_count > 0 || $node->doc_count > 0) $estimatedHeight += 4;

		// Check if we need a new page
		if ($pdf->GetY() + $estimatedHeight > 265) {
			$pdf->AddPage();
			if (!empty($tplidx)) {
				$pdf->useTemplate($tplidx);
			}
		}

		$startY = $pdf->GetY();
		$boxX = $leftMargin + $indent;

		// Draw tree connector lines
		if ($level > 0) {
			$pdf->SetDrawColor(180, 180, 180);
			$pdf->SetLineWidth(0.3);

			// Horizontal line to element
			$lineStartX = $boxX - 8;
			$lineEndX = $boxX - 2;
			$lineY = $startY + 4;
			$pdf->Line($lineStartX, $lineY, $lineEndX, $lineY);

			// Vertical line segment
			$pdf->Line($lineStartX, $startY - 2, $lineStartX, $lineY);
		}

		// Draw element box with rounded corners
		$pdf->SetDrawColor($colors['border'][0], $colors['border'][1], $colors['border'][2]);
		$pdf->SetLineWidth(0.4);

		// Header bar with color
		$pdf->SetFillColor($colors['bg'][0], $colors['bg'][1], $colors['bg'][2]);
		$pdf->RoundedRect($boxX, $startY, $contentWidth, 8, 1.5, '1100', 'DF');

		// Content area with light background
		$pdf->SetFillColor(250, 250, 250);
		$pdf->SetDrawColor(220, 220, 220);

		// Element header text (white on colored background)
		$pdf->SetXY($boxX + 3, $startY + 1.5);
		$pdf->SetFont('dejavusans', 'B', $fontSettings['header']);
		$pdf->SetTextColor(255, 255, 255);

		$headerText = $node->label;
		if ($node->type_label) {
			$headerText .= '  ·  '.$node->type_label;
		}
		$pdf->Cell($contentWidth - 6, 5, $headerText, 0, 1, 'L');

		$pdf->SetTextColor(0, 0, 0);
		$contentStartY = $startY + 8;
		$pdf->SetY($contentStartY);

		// Collect content to measure height
		$hasContent = false;
		$contentY = $contentStartY + 2;

		// Draw fields
		if (!empty($typeFieldsMap[$node->fk_anlage_type])) {
			foreach ($typeFieldsMap[$node->fk_anlage_type] as $fieldDef) {
				// Handle header fields as section titles
				if ($fieldDef->field_type === 'header') {
					$pdf->SetXY($boxX + 4, $contentY);
					$pdf->SetFont('dejavusans', 'B', $fontSettings['fields']);
					$pdf->SetTextColor(100, 100, 100);
					$pdf->Cell($contentWidth - 8, 4, strtoupper($fieldDef->field_label), 0, 1);
					$pdf->SetTextColor(0, 0, 0);
					$contentY += 4;
					$hasContent = true;
					continue;
				}

				$value = isset($fieldValues[$fieldDef->field_code]) ? $fieldValues[$fieldDef->field_code] : '';

				if ($value !== '') {
					// Format date values
					if ($fieldDef->field_type === 'date' && $value) {
						$value = dol_print_date(strtotime($value), 'day');
					}

					$pdf->SetXY($boxX + 4, $contentY);
					$pdf->SetFont('dejavusans', '', $fontSettings['fields']);
					$pdf->SetTextColor(120, 120, 120);
					$pdf->Cell(30, 3.5, $fieldDef->field_label.':', 0, 0);
					$pdf->SetFont('dejavusans', '', $fontSettings['content']);
					$pdf->SetTextColor(50, 50, 50);
					$pdf->Cell($contentWidth - 38, 3.5, $value, 0, 1);
					$contentY += 3.5;
					$hasContent = true;
				}
			}
		}

		// Notes
		if ($node->note_private) {
			$pdf->SetXY($boxX + 4, $contentY);
			$pdf->SetFont('dejavusans', 'I', $fontSettings['content']);
			$pdf->SetTextColor(100, 100, 100);
			$noteText = strip_tags($node->note_private);
			if (strlen($noteText) > 80) {
				$noteText = substr($noteText, 0, 77).'...';
			}
			$pdf->Cell($contentWidth - 8, 3.5, $noteText, 0, 1);
			$contentY += 3.5;
			$hasContent = true;
		}

		// File counts
		if ($node->image_count > 0 || $node->doc_count > 0) {
			$pdf->SetXY($boxX + 4, $contentY);
			$pdf->SetFont('dejavusans', '', $fontSettings['content']);
			$pdf->SetTextColor(150, 150, 150);
			$fileInfo = array();
			if ($node->image_count > 0) {
				$fileInfo[] = $node->image_count.' '.($node->image_count == 1 ? 'Bild' : 'Bilder');
			}
			if ($node->doc_count > 0) {
				$fileInfo[] = $node->doc_count.' '.($node->doc_count == 1 ? 'Dok.' : 'Dok.');
			}
			$pdf->Cell($contentWidth - 8, 3.5, implode(' | ', $fileInfo), 0, 1);
			$contentY += 3.5;
			$hasContent = true;
		}

		// Draw content box if there's content
		if ($hasContent) {
			$contentHeight = $contentY - $contentStartY + 2;
			$pdf->SetDrawColor(220, 220, 220);
			$pdf->SetFillColor(252, 252, 252);
			$pdf->RoundedRect($boxX, $contentStartY, $contentWidth, $contentHeight, 1.5, '0011', 'DF');

			// Redraw content on top of box
			$contentY = $contentStartY + 2;

			if (!empty($typeFieldsMap[$node->fk_anlage_type])) {
				foreach ($typeFieldsMap[$node->fk_anlage_type] as $fieldDef) {
					if ($fieldDef->field_type === 'header') {
						$pdf->SetXY($boxX + 4, $contentY);
						$pdf->SetFont('dejavusans', 'B', $fontSettings['fields']);
						$pdf->SetTextColor(100, 100, 100);
						$pdf->Cell($contentWidth - 8, 4, strtoupper($fieldDef->field_label), 0, 1);
						$pdf->SetTextColor(0, 0, 0);
						$contentY += 4;
						continue;
					}

					$value = isset($fieldValues[$fieldDef->field_code]) ? $fieldValues[$fieldDef->field_code] : '';

					if ($value !== '') {
						if ($fieldDef->field_type === 'date' && $value) {
							$value = dol_print_date(strtotime($value), 'day');
						}

						$pdf->SetXY($boxX + 4, $contentY);
						$pdf->SetFont('dejavusans', '', $fontSettings['fields']);
						$pdf->SetTextColor(120, 120, 120);
						$pdf->Cell(30, 3.5, $fieldDef->field_label.':', 0, 0);
						$pdf->SetFont('dejavusans', '', $fontSettings['content']);
						$pdf->SetTextColor(50, 50, 50);
						$pdf->Cell($contentWidth - 38, 3.5, $value, 0, 1);
						$contentY += 3.5;
					}
				}
			}

			if ($node->note_private) {
				$pdf->SetXY($boxX + 4, $contentY);
				$pdf->SetFont('dejavusans', 'I', $fontSettings['content']);
				$pdf->SetTextColor(100, 100, 100);
				$noteText = strip_tags($node->note_private);
				if (strlen($noteText) > 80) {
					$noteText = substr($noteText, 0, 77).'...';
				}
				$pdf->Cell($contentWidth - 8, 3.5, $noteText, 0, 1);
				$contentY += 3.5;
			}

			if ($node->image_count > 0 || $node->doc_count > 0) {
				$pdf->SetXY($boxX + 4, $contentY);
				$pdf->SetFont('dejavusans', '', $fontSettings['content']);
				$pdf->SetTextColor(150, 150, 150);
				$fileInfo = array();
				if ($node->image_count > 0) {
					$fileInfo[] = $node->image_count.' '.($node->image_count == 1 ? 'Bild' : 'Bilder');
				}
				if ($node->doc_count > 0) {
					$fileInfo[] = $node->doc_count.' '.($node->doc_count == 1 ? 'Dok.' : 'Dok.');
				}
				$pdf->Cell($contentWidth - 8, 3.5, implode(' | ', $fileInfo), 0, 1);
				$contentY += 3.5;
			}

			$pdf->SetY($contentStartY + $contentHeight + 3);
		} else {
			$pdf->SetY($startY + 11);
		}

		$pdf->SetTextColor(0, 0, 0);

		// Children
		if (!empty($node->children)) {
			drawTreePdf($pdf, $node->children, $typeFieldsMap, $langs, $level + 1, $tplidx, $fontSettings);
		}
	}
}