<?php

$listGetTimeout = 0;

function getArticlesList($ordered = true) {
    $listGetStart = new DateTime("now");
    global $Parsedown;
    global $listGetTimeout;

    $list = [];
    $files = scandir($_SERVER['DOCUMENT_ROOT'] . "/../_posts");

    foreach ($files as $file) {
        if (is_file($_SERVER['DOCUMENT_ROOT'] . "/../_posts/" . $file)) {
            $content = file_get_contents($_SERVER['DOCUMENT_ROOT'] . "/../_posts/" . $file);
            $lines = explode("\n", $content);
            $unlined = [];

            $id = substr($file, 0, -3);
            $list[$id] = [
                "date" => date("Y-m-d"),
                "title" => $id,
                "author" => "UnchainedTech",
                "cover" => null,
                "extract" => "",
                "admin" => false,
                "category" => "Uncategorized"
            ];
            $list[$id]["id"] = $id;

            $propertiesMode = false;
            $propertiesDone = false;
            $cline = 0;
            $upline = 0;
            foreach ($lines as $line) {
                if (!$propertiesDone) {
                    if (trim($line) === "---") {
                        if ($propertiesMode) {
                            $propertiesDone = true;
                            $propertiesMode = false;
                            $upline = $cline + 1;
                        } else {
                            $propertiesMode = true;
                        }
                    } else if ($propertiesMode) {
                        $parts = explode(":", $line);
                        $p_ins = trim($parts[0]);
                        array_shift($parts);
                        $p_data = trim(implode(":", $parts));

                        switch ($p_ins) {
                            case "date":
                                $pp_dt = DateTime::createFromFormat('Y-m-d', $p_data);
                                $list[$id]["date"] = $pp_dt->format("Ymd");
                                break;

                            case "title":
                                $list[$id]["title"] = $p_data;
                                break;

                            case "author":
                                $list[$id]["author"] = explode("|", $p_data);
                                break;

                            case "cover":
                                $list[$id]["cover"] = $p_data;
                                break;

                            case "category":
                                $list[$id]["category"] = $p_data;
                                break;
                        }
                    }
                }
                $cline++;
            }

            $i = 0;
            while ($i++ < $upline) {
                array_shift($lines);
            }

            $text = implode("\n", $lines);

            $list[$id]["content"] = [];
            $list[$id]["content"]["full"] = $Parsedown->text($text);
            $list[$id]["content"]["clean"] = strip_tags($list[$id]["content"]["full"]);
            if (strlen($list[$id]["content"]["clean"]) > 100) {
                $list[$id]["content"]["mini"] = substr($list[$id]["content"]["clean"], 0, 100) . "…";
            } else {
                $list[$id]["content"]["mini"] = $list[$id]["content"]["clean"];
            }
            if (strlen($list[$id]["content"]["clean"]) > 500) {
                $list[$id]["content"]["little"] = substr($list[$id]["content"]["clean"], 0, 500) . "…";
            } else {
                $list[$id]["content"]["little"] = $list[$id]["content"]["clean"];
            }
        }
    }

    $files = scandir($_SERVER['DOCUMENT_ROOT'] . "/../_posts/_drafts");

    foreach ($files as $file) {
        if (is_file($_SERVER['DOCUMENT_ROOT'] . "/../_posts/_drafts/" . $file) && $file !== "_template.md" && $file !== ".gitkeep") {
            $content = file_get_contents($_SERVER['DOCUMENT_ROOT'] . "/../_posts/_drafts/" . $file);
            $lines = explode("\n", $content);
            $unlined = [];

            $id = substr($file, 0, -3);
            $list[$id] = [
                "date" => date("Ymd"),
                "title" => $id,
                "author" => [ "UnchainedTech Authors" ],
                "cover" => null,
                "extract" => "",
                "admin" => true,
                "category" => "Uncategorized"
            ];
            $list[$id]["id"] = $id;

            $propertiesMode = false;
            $propertiesDone = false;
            $cline = 0;
            $upline = 0;
            foreach ($lines as $line) {
                if (!$propertiesDone) {
                    if (trim($line) === "---") {
                        if ($propertiesMode) {
                            $propertiesDone = true;
                            $propertiesMode = false;
                            $upline = $cline + 1;
                        } else {
                            $propertiesMode = true;
                        }
                    } else if ($propertiesMode) {
                        $parts = explode(":", $line);
                        $p_ins = trim($parts[0]);
                        array_shift($parts);
                        $p_data = trim(implode(":", $parts));

                        switch ($p_ins) {
                            case "date":
                                $pp_dt = DateTime::createFromFormat('Y-m-d', $p_data);
                                $list[$id]["date"] = $pp_dt->format("Ymd");
                                break;

                            case "title":
                                $list[$id]["title"] = $p_data;
                                break;

                            case "author":
                                $list[$id]["author"] = explode("|", $p_data);
                                break;

                            case "cover":
                                $list[$id]["cover"] = $p_data;
                                break;

                            case "category":
                                $list[$id]["category"] = $p_data;
                                break;
                        }
                    }
                }
                $cline++;
            }

            $i = 0;
            while ($i++ < $upline) {
                array_shift($lines);
            }

            $text = implode("\n", $lines);

            $list[$id]["content"] = [];
            $list[$id]["content"]["full"] = $Parsedown->text($text);
            $list[$id]["content"]["clean"] = strip_tags($list[$id]["content"]["full"]);
            if (strlen($list[$id]["content"]["clean"]) > 100) {
                $list[$id]["content"]["mini"] = substr($list[$id]["content"]["clean"], 0, 100) . "…";
            } else {
                $list[$id]["content"]["mini"] = $list[$id]["content"]["clean"];
            }
            if (strlen($list[$id]["content"]["clean"]) > 500) {
                $list[$id]["content"]["little"] = substr($list[$id]["content"]["clean"], 0, 500) . "…";
            } else {
                $list[$id]["content"]["little"] = $list[$id]["content"]["clean"];
            }
        }
    }

    $listGetEnd = new DateTime("now");

    $listGetTimeoutA = $listGetStart->diff($listGetEnd);
    $listGetTimeout = $listGetTimeoutA->f;

    if ($ordered) {
        usort($list, function($a, $b) {
            return strtoupper($a['date']) <=> strtoupper($b['date']);
        });
        $list = array_reverse($list);
    }

    return $list;
}