<?php
/* Copyright (C) 2026 Alles Watt lauft
 *
 * AJAX endpoint for equipment (Sicherungsautomaten, etc.)
 */

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

$res = 0;
if (!$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) die("Include of main fails");

require_once DOL_DOCUMENT_ROOT.'/custom/kundenkarte/class/equipment.class.php';
require_once DOL_DOCUMENT_ROOT.'/custom/kundenkarte/class/equipmentcarrier.class.php';
require_once DOL_DOCUMENT_ROOT.'/custom/kundenkarte/class/equipmenttype.class.php';

header('Content-Type: application/json; charset=UTF-8');

$action = GETPOST('action', 'aZ09');
$equipmentId = GETPOSTINT('equipment_id');
$carrierId = GETPOSTINT('carrier_id');

$equipment = new Equipment($db);

$response = array('success' => false, 'error' => '');

// Security check
if (!$user->hasRight('kundenkarte', 'read')) {
	$response['error'] = 'Permission denied';
	echo json_encode($response);
	exit;
}

switch ($action) {
	case 'get_types':
		// Get all equipment types for dropdown
		require_once DOL_DOCUMENT_ROOT.'/custom/kundenkarte/class/equipmenttype.class.php';
		$eqType = new EquipmentType($db);
		$systemId = GETPOSTINT('system_id');
		$types = $eqType->fetchAllBySystem($systemId, 1); // Filter by system if provided, only active

		$result = array();
		foreach ($types as $t) {
			$result[] = array(
				'id' => $t->id,
				'label' => $t->label,
				'label_short' => $t->label_short,
				'width_te' => $t->width_te,
				'color' => $t->color
			);
		}
		$response['success'] = true;
		$response['types'] = $result;
		break;

	case 'get':
		// Get single equipment data
		if ($equipmentId > 0 && $equipment->fetch($equipmentId) > 0) {
			$response['success'] = true;
			$response['equipment'] = array(
				'id' => $equipment->id,
				'fk_carrier' => $equipment->fk_carrier,
				'type_id' => $equipment->fk_equipment_type,
				'type_label' => $equipment->type_label,
				'type_label_short' => $equipment->type_label_short,
				'type_color' => $equipment->type_color,
				'type_icon_file' => $equipment->type_icon_file,
				'label' => $equipment->label,
				'position_te' => $equipment->position_te,
				'width_te' => $equipment->width_te,
				'field_values' => $equipment->getFieldValues(),
				'fk_product' => $equipment->fk_product,
				'fk_protection' => $equipment->fk_protection,
				'protection_label' => $equipment->protection_label
			);
		} else {
			$response['error'] = 'Equipment not found';
		}
		break;

	case 'get_protection_devices':
		// Get all protection devices (FI/RCD) for an Anlage
		$anlageId = GETPOSTINT('anlage_id');
		if ($anlageId > 0) {
			$devices = $equipment->fetchProtectionDevices($anlageId);
			$result = array();
			foreach ($devices as $d) {
				$result[] = array(
					'id' => $d->id,
					'label' => $d->label ?: $d->type_label,
					'type_label' => $d->type_label,
					'type_label_short' => $d->type_label_short,
					'display_label' => ($d->label ?: $d->type_label_short ?: $d->type_label).' (Pos. '.$d->position_te.')'
				);
			}
			$response['success'] = true;
			$response['devices'] = $result;
		} else {
			$response['error'] = 'Missing anlage_id';
		}
		break;

	case 'list':
		// List all equipment on a carrier
		if ($carrierId > 0) {
			$items = $equipment->fetchByCarrier($carrierId);
			$result = array();
			foreach ($items as $eq) {
				$iconUrl = '';
				if (!empty($eq->type_icon_file)) {
					$iconUrl = DOL_URL_ROOT.'/document.php?modulepart=kundenkarte&file=equipment_icons/'.urlencode($eq->type_icon_file);
				}
				$result[] = array(
					'id' => $eq->id,
					'type_id' => $eq->fk_equipment_type,
					'type_label' => $eq->type_label,
					'type_label_short' => $eq->type_label_short,
					'type_ref' => $eq->type_ref,
					'type_color' => $eq->type_color,
					'type_icon_file' => $eq->type_icon_file,
					'type_icon_url' => $iconUrl,
					'type_block_image' => $eq->type_block_image,
					'type_block_image_url' => !empty($eq->type_block_image) ? DOL_URL_ROOT.'/document.php?modulepart=kundenkarte&file=block_images/'.urlencode($eq->type_block_image) : '',
					'type_flow_direction' => $eq->type_flow_direction,
					'type_terminal_position' => $eq->type_terminal_position ?: 'both',
					'terminals_config' => $eq->terminals_config,
					'label' => $eq->label,
					'position_te' => $eq->position_te,
					'width_te' => $eq->width_te,
					'block_label' => $eq->getBlockLabel(),
					'block_color' => $eq->getBlockColor(),
					'field_values' => $eq->getFieldValues(),
					'fk_product' => $eq->fk_product
				);
			}
			$response['success'] = true;
			$response['equipment'] = $result;
		} else {
			$response['error'] = 'Missing carrier_id';
		}
		break;

	case 'create':
		if (!$user->hasRight('kundenkarte', 'write')) {
			$response['error'] = 'Permission denied';
			break;
		}

		$equipment->fk_carrier = $carrierId;
		$equipment->fk_equipment_type = GETPOSTINT('type_id');
		$equipment->label = GETPOST('label', 'alphanohtml');
		$equipment->position_te = GETPOSTINT('position_te');
		$equipment->width_te = GETPOSTINT('width_te');
		$equipment->fk_product = GETPOSTINT('fk_product');
		$equipment->fk_protection = GETPOSTINT('fk_protection');
		$equipment->protection_label = GETPOST('protection_label', 'alphanohtml');

		// Field values
		$fieldValues = GETPOST('field_values', 'nohtml');
		if ($fieldValues) {
			$equipment->field_values = $fieldValues;
		}

		// If no width specified, get from type
		if (empty($equipment->width_te)) {
			$type = new EquipmentType($db);
			if ($type->fetch($equipment->fk_equipment_type) > 0) {
				$equipment->width_te = $type->width_te;
			} else {
				$equipment->width_te = 1;
			}
		}

		// Check carrier and position
		$carrier = new EquipmentCarrier($db);
		if ($carrier->fetch($carrierId) > 0) {
			// If no position specified, find next free position (1-based)
			if (empty($equipment->position_te)) {
				$equipment->position_te = $carrier->getNextFreePosition($equipment->width_te);
				if ($equipment->position_te < 0) {
					$response['error'] = 'No free position available on carrier';
					break;
				}
			}

			// Check if position is available
			if (!$carrier->isPositionAvailable($equipment->position_te, $equipment->width_te)) {
				$response['error'] = 'Position not available';
				break;
			}
		}

		$result = $equipment->create($user);
		if ($result > 0) {
			$response['success'] = true;
			$response['equipment_id'] = $result;
			$response['block_label'] = $equipment->getBlockLabel();
		} else {
			$response['error'] = $equipment->error;
		}
		break;

	case 'update':
		if (!$user->hasRight('kundenkarte', 'write')) {
			$response['error'] = 'Permission denied';
			break;
		}
		if ($equipment->fetch($equipmentId) > 0) {
			$newPosition = GETPOSTINT('position_te');
			$newWidth = GETPOSTINT('width_te') ?: $equipment->width_te;

			// Check if new position is available (excluding current equipment)
			if ($newPosition != $equipment->position_te || $newWidth != $equipment->width_te) {
				$carrier = new EquipmentCarrier($db);
				if ($carrier->fetch($equipment->fk_carrier) > 0) {
					if (!$carrier->isPositionAvailable($newPosition, $newWidth, $equipmentId)) {
						$response['error'] = 'Position not available';
						break;
					}
				}
			}

			$equipment->fk_equipment_type = GETPOSTINT('type_id') ?: $equipment->fk_equipment_type;
			$equipment->label = GETPOST('label', 'alphanohtml');
			$equipment->position_te = $newPosition;
			$equipment->width_te = $newWidth;
			$equipment->fk_product = GETPOSTINT('fk_product');
			$equipment->fk_protection = GETPOSTINT('fk_protection');
			$equipment->protection_label = GETPOST('protection_label', 'alphanohtml');

			$fieldValues = GETPOST('field_values', 'nohtml');
			if ($fieldValues) {
				$equipment->field_values = $fieldValues;
			}

			$result = $equipment->update($user);
			if ($result > 0) {
				$response['success'] = true;
				$response['block_label'] = $equipment->getBlockLabel();
			} else {
				$response['error'] = $equipment->error;
			}
		} else {
			$response['error'] = 'Equipment not found';
		}
		break;

	case 'update_position':
		// Quick position update for drag-drop
		if (!$user->hasRight('kundenkarte', 'write')) {
			$response['error'] = 'Permission denied';
			break;
		}
		if ($equipment->fetch($equipmentId) > 0) {
			$newPosition = GETPOSTINT('position_te');

			// Check if new position is available
			if ($newPosition != $equipment->position_te) {
				$carrier = new EquipmentCarrier($db);
				if ($carrier->fetch($equipment->fk_carrier) > 0) {
					if (!$carrier->isPositionAvailable($newPosition, $equipment->width_te, $equipmentId)) {
						$response['error'] = 'Position not available';
						break;
					}
				}
			}

			$equipment->position_te = $newPosition;
			$result = $equipment->update($user);
			if ($result > 0) {
				$response['success'] = true;
			} else {
				$response['error'] = $equipment->error;
			}
		} else {
			$response['error'] = 'Equipment not found';
		}
		break;

	case 'move_to_carrier':
		// Move equipment to different carrier (drag-drop between carriers)
		if (!$user->hasRight('kundenkarte', 'write')) {
			$response['error'] = 'Permission denied';
			break;
		}
		if ($equipment->fetch($equipmentId) > 0) {
			$newCarrierId = GETPOSTINT('carrier_id');
			$newPosition = GETPOSTINT('position_te') ?: 1;

			// Check if target carrier exists
			$targetCarrier = new EquipmentCarrier($db);
			if ($targetCarrier->fetch($newCarrierId) <= 0) {
				$response['error'] = 'Target carrier not found';
				break;
			}

			// Check if position is available on target carrier
			if (!$targetCarrier->isPositionAvailable($newPosition, $equipment->width_te, 0)) {
				$response['error'] = 'Position auf Ziel-Hutschiene nicht verfügbar';
				break;
			}

			// Update equipment
			$equipment->fk_carrier = $newCarrierId;
			$equipment->position_te = $newPosition;
			$result = $equipment->update($user);
			if ($result > 0) {
				$response['success'] = true;
				$response['message'] = 'Equipment verschoben';
			} else {
				$response['error'] = $equipment->error;
			}
		} else {
			$response['error'] = 'Equipment not found';
		}
		break;

	case 'delete':
		if (!$user->hasRight('kundenkarte', 'delete')) {
			$response['error'] = 'Permission denied';
			break;
		}
		if ($equipment->fetch($equipmentId) > 0) {
			$result = $equipment->delete($user);
			if ($result > 0) {
				$response['success'] = true;
			} else {
				$response['error'] = $equipment->error;
			}
		} else {
			$response['error'] = 'Equipment not found';
		}
		break;

	case 'duplicate':
		if (!$user->hasRight('kundenkarte', 'write')) {
			$response['error'] = 'Permission denied';
			break;
		}
		if ($equipment->fetch($equipmentId) > 0) {
			$newId = $equipment->duplicate($user);
			if ($newId > 0) {
				$response['success'] = true;
				$response['equipment_id'] = $newId;

				// Fetch the new equipment to return its data
				$newEquipment = new Equipment($db);
				if ($newEquipment->fetch($newId) > 0) {
					$response['equipment'] = array(
						'id' => $newEquipment->id,
						'fk_carrier' => $newEquipment->fk_carrier,
						'type_id' => $newEquipment->fk_equipment_type,
						'type_label' => $newEquipment->type_label,
						'type_label_short' => $newEquipment->type_label_short,
						'type_color' => $newEquipment->type_color,
						'type_ref' => $newEquipment->type_ref,
						'type_icon_file' => $newEquipment->type_icon_file,
						'terminals_config' => $newEquipment->terminals_config,
						'label' => $newEquipment->label,
						'position_te' => $newEquipment->position_te,
						'width_te' => $newEquipment->width_te,
						'block_label' => $newEquipment->getBlockLabel(),
						'block_color' => $newEquipment->getBlockColor(),
						'field_values' => $newEquipment->getFieldValues(),
						'fk_product' => $newEquipment->fk_product
					);
				}
			} else {
				$response['error'] = $equipment->error ?: 'Duplication failed';
			}
		} else {
			$response['error'] = 'Equipment not found';
		}
		break;

	case 'move':
		// Move equipment to new position (for drag & drop)
		if (!$user->hasRight('kundenkarte', 'write')) {
			$response['error'] = 'Permission denied';
			break;
		}
		if ($equipment->fetch($equipmentId) > 0) {
			$newPosition = GETPOSTINT('position_te');

			$carrier = new EquipmentCarrier($db);
			if ($carrier->fetch($equipment->fk_carrier) > 0) {
				if ($carrier->isPositionAvailable($newPosition, $equipment->width_te, $equipmentId)) {
					$equipment->position_te = $newPosition;
					$result = $equipment->update($user);
					if ($result > 0) {
						$response['success'] = true;
					} else {
						$response['error'] = $equipment->error;
					}
				} else {
					$response['error'] = 'Position not available';
				}
			}
		} else {
			$response['error'] = 'Equipment not found';
		}
		break;

	default:
		$response['error'] = 'Unknown action';
}

echo json_encode($response);
$db->close();