<?php

use Mni\FrontYAML\Parser;
use function _\orderBy;
use function _\filter;
use function _\find;

class Book
{
  public $files = [];

  public function __construct($folder)
  {
    $this->read($folder);
  }
  public function read($folder)
  {
    $folders = glob("$folder/*", GLOB_ONLYDIR);
    foreach ($folders as $folder) {
      //$this->files[] = $folder . "/";
      $this->read($folder);
    }
    $files = array_filter(glob("$folder/*md"), "is_file");
    foreach ($files as $file) {
      $this->files[] = $file;
    }
  }

  public function findPageById(string $uuid)
  {
    $content = $this->getContents();
    $page = find($content, ["uuid" => $uuid]);
    return $page;
  }

  public function findPageBySlug(string $slug = null)
  {
    $content = $this->getContents();
    if (isset($slug)) {
      $page = find($content, ["slug" => $slug]);
    } else {
      $page = find($content, ["layout" => "index"]);
    }

    return $page;
  }

  public function editPage($task, $request)
  {
    $content = $this->getContents();
    if ($task == "delete") {
      $parsed = json_decode(file_get_contents("php://input"), true);
      $body = find($content, ["uuid" => $parsed["id"]]);
    } else {
      $body = $request->getParsedBody();
    }

    $page = find($content, ["uuid" => $body["uuid"]]);
    $image = $request->getUploadedFiles();
    $member = Session::get("member");

    if ($task != "create") {
      $path =
        date("Y", date($page["rawCreated"])) .
        "/" .
        date("m", date($page["rawCreated"]));
    } else {
      $path = date("Y") . "/" . date("m");
    }

    if (isset($image["feature_image"])) {
      if ($task != "create") {
        $feature =
          "/assets/images/blog/" .
          $path .
          "/" .
          $image["feature_image"]->getClientFileName();
      } else {
        $feature =
          "/assets/images/blog/" .
          $path .
          "/" .
          $image["feature_image"]->getClientFileName();
      }

      FileUploader::uploadFile(
        "../public/assets/images/blog/" . $path . "/",
        $image["feature_image"]
      );
    } else {
      if (isset($body["feature_image"])) {
        $url = explode("/", $body["feature_image"]);
        $feature =
          "/" .
          $url[3] .
          "/" .
          $url[4] .
          "/" .
          $url[5] .
          "/" .
          $url[6] .
          "/" .
          $url[7] .
          "/" .
          $url[8];
      } else {
        $task == "create" ? ($feature = "") : ($feature = $body["feature"]);
      }
    }

    if ($task == "delete") {
      $deleted = "true";
      $body["menu"] ? ($body["menu"] = "true") : ($body["menu"] = "false");
      $body["published"]
        ? ($body["published"] = "true")
        : ($body["published"] = "false");
      $body["featured"]
        ? ($body["featured"] = "true")
        : ($body["featured"] = "false");
    } else {
      $deleted = isset($page["deleted"]) ? $page["deleted"] : "false";
    }

    $created =
      $task != "create"
        ? new \Moment\Moment($page["rawCreated"])
        : new \Moment\Moment();
    $updated = new \Moment\Moment();

    //grab current index from settings and update
    $id = $task != "create" ? $body["id"] : Settings::getCurrentIndex();
    $uuid = $task != "create" ? $body["uuid"] : StringTools::createUUID();
    // now that variables are done, set to body object and then convert to markdown to save

    $body["id"] = $id;
    $body["uuid"] = $uuid;
    $body["feature"] = $feature;
    $body["path"] = $path;
    $body["author"] = $member["handle"];
    $body["created"] = $created->format("Y-m-d\TH:i:sP");
    $body["updated"] = $updated->format("Y-m-d\TH:i:sP");
    $body["deleted"] = $deleted;

    $write = DocTools::objectToMD($body);

    // if layout is index, change path to file

    if ($body["layout"] == "index") {
      $writePath = "../content/pages/start/index.md";
    } else {
      $writePath = "../content/pages/" . $path . "/" . $body["slug"] . ".md";
    }

    $status = DocTools::writePages($task, $path, $writePath, $write);

    if ($status) {
      $response = [
        "message" => "File edited. Nice work",
        "type" => $task == "write" ? "postUpdated" : "postAdded",
        "id" => $uuid,
      ];

      //TODO: When form submission is successful, make new form token
      $form_token = md5(uniqid(microtime(), true));
      Session::set("form_token", $form_token);

      //once saved, update menu
      $body["path"] = $path;
      Settings::updateMenu($body);
      Settings::updateTags();
      //if new page added, update current index in Settings file
      if ($task == "create") {
        Settings::updateIndex();
      }
    } else {
      $response = [
        "message" => "Uh oh. File save problem. Don't panic",
        "type" => "postError",
        "id" => $uuid,
      ];
    }

    return $response;
  }

  public function getPages(int $page, int $limit, string $sort = null)
  {
    $content = $this->getContents();

    $published = filter($content, function ($item) {
      return $item["published"] == true && $item["deleted"] == false;
    });
    $deleted = filter($content, function ($item) {
      return $item["deleted"] == true;
    });

    $all = $content;
    $filter = isset($sort) ? $sort : "all";
    switch ($filter) {
      case "published":
        $filtered = $published;
        break;
      case "deleted":
        $filtered = $deleted;
        break;
      default:
        $filtered = $content;
        break;
    }
    $numOfPages = ceil(count($filtered) / ($limit + 1));
    $folder = [];

    if (count($filtered) != 0) {
      if (count($filtered) < $limit) {
        $limit = count($filtered) - 1;
      }
      $range = $page * $limit - $limit;

      if ($range != 0) {
        $range = $range + 1;
      }
      for ($i = 0; $i <= $limit; $i++) {
        if (isset($filtered[$i + $range])) {
          array_push($folder, $filtered[$i + $range]);
        } else {
          //chill out
        }
      }
    }

    $prev = $page - 1;
    if ($prev <= 0) {
      $prev = $numOfPages;
    }

    $next = $page + 1;
    if ($next > $numOfPages) {
      $next = 1;
    }

    return [
      "pages" => $folder,
      "numOfPages" => $numOfPages,
      "entryCount" => count($filtered),
      "paginate" => [
        "sort" => $sort,
        "nextPage" => $next,
        "prevPage" => $prev,
      ],
      "stats" => [
        "all" => count($all),
        "published" => count($published),
        "deleted" => count($deleted),
      ],
    ];
  }
  public function getContents()
  {
    //move page collection to utiltiy class
    $parser = new Parser();
    $contents = [];
    foreach ($this->files as $file) {
      $doc = $parser->parse(file_get_contents($file), false);
      $meta = $doc->getYAML();
      $page = [
        "id" => $meta["id"],
        "uuid" => $meta["uuid"],
        "title" => $meta["title"],
        "feature" => $meta["feature"],
        "path" => $meta["path"],
        "layout" => $meta["layout"],
        "tags" => $meta["tags"],
        "author" => $meta["author"],
        "created" => date("Y M D d", $meta["created"]),
        "updated" => date("Y M D d", $meta["updated"]),
        "rawCreated" => $meta["created"],
        "rawUpdated" => $meta["updated"],
        "createdYear" => date("Y", $meta["created"]),
        "createdMonth" => date("m", $meta["created"]),
        "deleted" => $meta["deleted"],
        "menu" => $meta["menu"],
        "featured" => $meta["featured"],
        "published" => $meta["published"],
        "slug" => $meta["slug"],
        "filePath" => $file,
        "content" => $doc->getContent(),
      ];
      //checks for duplicates
      $uuid = $meta["uuid"];
      $found = current(
        array_filter($contents, function ($item) use ($uuid) {
          return isset($item["uuid"]) && $uuid == $item["uuid"];
        })
      );

      // if uuid is not present, add it
      if (!$found) {
        array_push($contents, $page);
      }
    }
    $contents = orderBy($contents, ["id"], ["desc"]);
    return $contents;
  }
}