<?php namespace Kanboard\Plugin\OMITemplateModder\Controller;

use Kanboard\Controller\BaseController;

/**
 * TemplateController Controller
 *
 * @package  Kanboard\Plugin\OMITemplateModder
 * @author   Dwayne @ OMI NZ
 */
class TemplateController extends BaseController {
  
  /**
  * Show all the available templates.
  */
  public function show() {
        $templates = $this->getEditableTemplates();
        $missingTemplates = array_diff($this->getCoreTemplates(), $this->getPluginTemplates());
        $extraTemplates = array_diff($this->getPluginTemplates(), $this->getCoreTemplates());
        $modifiedStatus = $this->getModifiedStatus();

    $this->response->html($this->helper->layout->config("OMITemplateModder:config/index", [
      "title" => t("OMI - Notification Template Modder"),
      "templates" => $templates,
      "missing_templates" => $missingTemplates,
      "extra_templates" => $extraTemplates,
      "modified_status" => $modifiedStatus,
    ]));
  }
  
  /**
  * Get a list of editable templates from the plugin's directory.
  *
  * @return array
  */
  private function getEditableTemplates() {
    $templates = [];
    $templateDir = ETM_PLUGIN_ROOT_DIR . "/Template/notification";
    
    foreach (glob($templateDir . "/*.php") as $filename) {
      $templateName = basename($filename, ".php");
      $templates[] = "notification/" . $templateName;
    }
    
    return $templates;
  }
  
  /**
  * Get a list of core notification templates.
  *
  * @return array
  */
  private function getCoreTemplates() {
    $templates = [];
    // Use the new custom constant defined in Plugin.php
    $templateDir = KB_APP_DIR . "/Template/notification";
    
    foreach (glob($templateDir . "/*.php") as $filename) {
      $templates[] = basename($filename, ".php");
    }
    
    return $templates;
  }
  
  /**
  * Get a list of plugin notification templates.
  *
  * @return array
  */
  private function getPluginTemplates() {
    $templates = [];
    $templateDir = ETM_PLUGIN_ROOT_DIR . "/Template/notification";
    
    foreach (glob($templateDir . "/*.php") as $filename) {
      $templates[] = basename($filename, ".php");
    }
    
    return $templates;
  }
  
    /**
     * Compares core and plugin templates by file content to check for modifications.
     *
     * @return array
     */
    private function getModifiedStatus()
    {
        $modified = [];
        $pluginTemplateDir = ETM_PLUGIN_ROOT_DIR . '/Template/notification';
        $coreTemplateDir = KB_APP_DIR . '/Template/notification';

        foreach (glob($pluginTemplateDir . '/*.php') as $filename) {
            $templateName = basename($filename);
            $pluginFile = $pluginTemplateDir . '/' . $templateName;
            $coreFile = $coreTemplateDir . '/' . $templateName;

            // Only compare if the core file exists
            if (file_exists($coreFile)) {
                $pluginContent = file_get_contents($pluginFile);
                $coreContent = file_get_contents($coreFile);
                
                // Compare the file contents
                if ($pluginContent !== $coreContent) {
                    $modified[$templateName] = true;
                }
            }
        }
        return $modified;
    }
  
  /**
   * Show the form to edit a template
   */
  public function edit() {
    $templateIndex = $this->request->getIntegerParam("template_index");
    $templates = $this->getEditableTemplates();
    
    if (!isset($templates[$templateIndex])) {
      $this->flash->failure(t("Template not found!"));
      return $this->response->redirect($this->helper->url->to("TemplateController", "show", ["plugin" => "OMITemplateModder"]));
    }
    
    $templateName = $templates[$templateIndex];
    $templatePath = $this->getTemplatePath($templateName);
    
    if (!file_exists($templatePath)) {
      $this->flash->failure(t("Template file not found!"));
      return $this->response->redirect($this->helper->url->to("TemplateController", "show", ["plugin" => "OMITemplateModder"]));
    }
    
    $templateContent = file_get_contents($templatePath);
    
    // Use the layout helper to render the page with the full Kanboard layout.
    $this->response->html($this->helper->layout->config("OMITemplateModder:config/edit", [
      "title" => t("OMI - Notification Template Modder"),
      "subtitle" => t("Edit Template: %s", $templateName),
      "templateName" => $templateName,
      "templateContent" => htmlspecialchars($templateContent),
      "templateIndex" => $templateIndex // Pass the index for the form action
    ]));
  }
  
  /**
   * Save the edited template
   */
  public function save() {
    
    $templateIndex = $this->request->getIntegerParam("template_index");
    $templates = $this->getEditableTemplates();
    
    if (!isset($templates[$templateIndex])) {
      $this->flash->failure(t("Template not found! Check your Kanboard version is compatible with this plugin."));
      return $this->response->redirect($this->helper->url->to("TemplateController", "show", ["plugin" => "OMITemplateModder"]));
    }
    
    $templateName = $templates[$templateIndex];
    $templateContent = $this->request->getValue("content");
    $templatePath = $this->getTemplatePath($templateName);
    
    //check if the realpath of the file to be saved begins with the realpath of the allowed directory.
    $allowedDir = realpath(\ETM_PLUGIN_ROOT_DIR . "/Template/notification");
    $realTemplatePath = realpath($templatePath);
    
    if ($realTemplatePath === false || strpos($realTemplatePath, $allowedDir) !== 0) {
      $this->flash->failure(t("Invalid template path."));
      return $this->response->redirect($this->helper->url->to("TemplateController", "show", ["plugin" => "OMITemplateModder"]));
    }
    
    // Try to save the file
    if (file_put_contents($templatePath, $templateContent) !== false) {
      $this->flash->success(t("Template saved successfully."));
    } else {
      $this->flash->failure(t("Unable to save template. Please check file permissions and directory '_DIR_' set up."));
    }
    
    return $this->response->redirect($this->helper->url->to("TemplateController", "edit", ["plugin" => "OMITemplateModder", "template_index" => $templateIndex]));
  }
  
  /**
   * Get the full path to a template file
   *
   * @param string $templateName
   * @return string
   */
  private function getTemplatePath($templateName) {
    return \ETM_PLUGIN_ROOT_DIR . "/Template/" . $templateName . ".php";
  }
}
#-
#plugins/OMITemplateModder/Controller/TemplateController.php