diff --git a/README.md b/README.md
index 2ede294..3e218ce 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
 # fibable
 
-A little PHP file-based blog engine.
\ No newline at end of file
+A little PHP file-based blog engine.
+
+This is a lightweight and not yet finished blog engine, written in PHP, working without database, only with directory structure and files and a sort of Markdown format.
diff --git a/config.php b/config.php
new file mode 100644
index 0000000..df4a2e0
--- /dev/null
+++ b/config.php
@@ -0,0 +1,14 @@
+<?php
+
+define("BLOG_TITLE", "blog title");
+define("BLOG_SUB_TITLE", "blog sub title - optional, leave blank if none");
+define("BLOG_LANGUAGE", "country code");
+define("BLOG_CREATION_YEAR", 2023);
+define("AUTHOR_NICKNAME", "blog author nickname");
+define("AUTHOR_REALNAME", "blog author real name - optional, leave blank if none");
+define("AUTHOR_BIOGRAPHY", "blog author biography");
+define("ARTICLE_COUNT_IN_NAV", 10);
+
+$links = [
+    "link label" => "https://example.com"
+];
diff --git a/css/blog.css b/css/blog.css
new file mode 100644
index 0000000..87925bd
--- /dev/null
+++ b/css/blog.css
@@ -0,0 +1,5 @@
+@charset "utf-8";
+
+* { box-sizing: border-box; }
+
+body { font-family: sans-serif; }
diff --git a/data/cache/default.phtml b/data/cache/default.phtml
new file mode 100644
index 0000000..7947b73
--- /dev/null
+++ b/data/cache/default.phtml
@@ -0,0 +1,8 @@
+            <header>
+                <h2>L'article que vous cherchez n'existe pas</h2>
+                <nav></nav>
+            </header>
+            <p>
+                Il n'y a rien à voir ici ! Vous avez du vous tromper de chemin !
+            </p>
+            <footer>01/08/2023</footer>
diff --git a/data/serial/default.pobj b/data/serial/default.pobj
new file mode 100644
index 0000000..d1efe76
--- /dev/null
+++ b/data/serial/default.pobj
@@ -0,0 +1 @@
+O:7:"Article":5:{s:5:"title";s:40:"L'article que vous cherchez n'existe pas";s:4:"date";s:10:"2023-08-01";s:3:"ref";s:2:"01";s:4:"tags";a:2:{i:0;s:4:"blog";i:1;s:5:"essai";}s:4:"view";s:26:"./data/cache/default.phtml";}
diff --git a/index.php b/index.php
new file mode 100644
index 0000000..59f28e7
--- /dev/null
+++ b/index.php
@@ -0,0 +1,10 @@
+<?php
+
+spl_autoload_register(
+    function ($class_name) {
+        require_once "lib/$class_name.php";
+    }
+);
+
+$blog = new Blog();
+$blog->run();
diff --git a/lib/Article.php b/lib/Article.php
new file mode 100644
index 0000000..8b3e3de
--- /dev/null
+++ b/lib/Article.php
@@ -0,0 +1,17 @@
+<?php
+
+final class Article
+{
+    
+    public string $title;
+    public string $date;
+    public string $ref;
+    public array $tags;
+    public string $view;
+
+    public function render()
+    {
+        include $this->view;
+    }
+
+}
diff --git a/lib/ArticleDate.php b/lib/ArticleDate.php
new file mode 100644
index 0000000..e9aecff
--- /dev/null
+++ b/lib/ArticleDate.php
@@ -0,0 +1,14 @@
+<?php
+
+final class ArticleDate
+{
+    
+    public string $str;
+    public array $articles = [];
+
+    public function __construct(string $str)
+    {
+        $this->str = $str;
+    }
+
+}
diff --git a/lib/ArticleManager.php b/lib/ArticleManager.php
new file mode 100644
index 0000000..39e8d7d
--- /dev/null
+++ b/lib/ArticleManager.php
@@ -0,0 +1,118 @@
+<?php
+
+final class ArticleManager
+{
+    const BASE_PATH = "./data/articles";
+
+    public static function get(string $fullref): Article
+    {
+        $serial_path = "./data/serial/$fullref.pobj";
+        return is_file($serial_path) ?
+            unserialize(file_get_contents($serial_path)) :
+            unserialize(file_get_contents("./data/serial/default.pobj"));
+    }
+
+    public static function getMultiple(array $fullrefs): array
+    {
+        $articles = [];
+        foreach ($fullrefs as $fullref) {
+            $articles[] = self::get($fullref);
+        }
+        return $articles;
+    }
+
+    public static function getNewest(): Article
+    {
+        $dot_dirs = [".", ".."];
+        $years = array_diff(scandir(self::BASE_PATH, SCANDIR_SORT_DESCENDING), $dot_dirs);
+        $year = $years[0];
+        $path = self::BASE_PATH . "/$year";
+        $months = array_diff(scandir($path, SCANDIR_SORT_DESCENDING), $dot_dirs);
+        $month = $months[0];
+        $path = "$path/$month";
+        $days = array_diff(scandir($path, SCANDIR_SORT_DESCENDING), $dot_dirs);
+        $day = $days[0];
+        $path = "$path/$day";
+        foreach (array_diff(scandir($path, SCANDIR_SORT_DESCENDING), $dot_dirs) as $file) {
+            $file_path = "$path/$file";
+            if (pathinfo($file_path, PATHINFO_EXTENSION) !== "txt") {
+                continue;
+            }
+            $ref = substr($file, 0, -4);
+            break;
+        }
+        return self::get("$year$month$day$ref");
+    }
+
+    public static function getLatestArticles(int $count): array
+    {
+        $dot_dirs = [".", ".."];
+        $articles = [];
+        foreach (array_diff(scandir(self::BASE_PATH, SCANDIR_SORT_DESCENDING), $dot_dirs) as $year) {
+            $year_path = self::BASE_PATH . "/$year";
+            foreach (array_diff(scandir($year_path, SCANDIR_SORT_DESCENDING), $dot_dirs) as $month) {
+                $month_path = "$year_path/$month";
+                foreach (array_diff(scandir($month_path, SCANDIR_SORT_DESCENDING), $dot_dirs) as $day) {
+                    $day_path = "$month_path/$day";
+                    foreach (array_diff(scandir($day_path, SCANDIR_SORT_DESCENDING), $dot_dirs) as $file) {
+                        $file_path = "$day_path/$file";
+                        if (pathinfo($file_path, PATHINFO_EXTENSION) !== "txt") {
+                            continue;
+                        }
+                        $articles[] = self::getArticle($file_path);
+                        if (count($articles) === $count) {
+                            return $articles;
+                        }
+                    }
+                }
+            }
+        }
+        return $articles;
+    }
+
+    public static function getAll(): array
+    {
+        $dot_dirs = [".", ".."];
+        $dates = [];
+        foreach (array_diff(scandir(self::BASE_PATH, SCANDIR_SORT_DESCENDING), $dot_dirs) as $year) {
+            $year_path = self::BASE_PATH . "/$year";
+            foreach (array_diff(scandir($year_path, SCANDIR_SORT_DESCENDING), $dot_dirs) as $month) {
+                $month_path = "$year_path/$month";
+                foreach (array_diff(scandir($month_path, SCANDIR_SORT_DESCENDING), $dot_dirs) as $day) {
+                    $day_path = "$month_path/$day";
+                    $date = "$year$month$day";
+                    foreach (array_diff(scandir($day_path, SCANDIR_SORT_DESCENDING), $dot_dirs) as $file) {
+                        $file_path = "$day_path/$file";
+                        if (pathinfo($file_path, PATHINFO_EXTENSION) !== "txt") {
+                            continue;
+                        }
+                        if (!isset($dates["$date"])) {
+                            $dates["$date"] = new ArticleDate("$day/$month/$year");
+                        }
+                        $dates["$date"]->articles[] = self::getArticle($file_path);
+                    }
+                }
+            }
+        }
+        return $dates;
+    }
+
+    private static function getArticle(string $file_path): Article
+    {
+        $pattern = "|(./data)/articles/([0-9]+)/([0-9]+)/([0-9]+)/([0-9]+)\.txt|";
+        $replacement = "$1/serial/$2$3$4$5.pobj";
+        $serial_path = preg_replace($pattern, $replacement, $file_path);
+        return file_exists($serial_path) ?
+            unserialize(file_get_contents($serial_path)) :
+            self::createArticle($file_path, $serial_path);
+    }
+
+    private static function createArticle(string $file_path, string $serial_path): Article
+    {
+        $parser = new ArticleParser();
+        $article = $parser->parse($file_path);
+        file_put_contents($serial_path, serialize($article));
+        TagManager::add($article->tags, substr(basename($serial_path), 0, -5));
+        return $article;
+    }
+}
diff --git a/lib/ArticleParser.php b/lib/ArticleParser.php
new file mode 100644
index 0000000..45a1a20
--- /dev/null
+++ b/lib/ArticleParser.php
@@ -0,0 +1,122 @@
+<?php
+
+final class ArticleParser
+{
+
+    const PATTERN_DATE = "|\./data/articles/([0-9]+)/([0-9]+)/([0-9]+)/([0-9]+).txt|";
+    const PATTERN_TAGS = "/^\{(([a-zA-Z0-9]+,*)+)\}$/";
+    const PATTERN_IMG = "/^([a-zA-Z0-9\-_\.]+\.(jpg|png)) \((.*)\)$/";
+    const PATTERN_BOLD = "/\*([^*]*)\*/";
+    const PATTERN_ITALIC = "|/([^/]*)/|";
+    const PATTERN_UNDERLINE = "/_([^_]*)_/";
+    const REPLACE_DATE = "$1-$2-$3";
+    const REPLACE_REF = "$4";
+    const REPLACE_BOLD = "<strong>$1</strong>";
+    const REPLACE_ITALIC = "<em>$1</em>";
+    const REPLACE_UNDERLINE = "<u>$1</u>";
+
+    private bool $in_p = false;
+    private array $content = [];
+    private array $p = [];
+
+    public function parse(string $file_path): Article
+    {
+        $article = new Article();
+        $article->date = preg_replace(self::PATTERN_DATE, self::REPLACE_DATE, $file_path);
+        $article->ref = preg_replace(self::PATTERN_DATE, self::REPLACE_REF, $file_path);
+        $lines = file($file_path, FILE_IGNORE_NEW_LINES);
+        foreach ($lines as $line) {
+            if (substr($line, 0, 2) === "# ") {
+                $article->title = substr($line, 2);
+                continue;
+            }
+            if (substr($line, 0, 3) === "## ") {
+                $this->closeParagraph();
+                $this->content[] = "<h3>" . substr($line, 3) . "</h3>";
+                continue;
+            }
+            if (substr($line, 0, 4) === "### ") {
+                $this->closeParagraph();
+                $this->content[] = "<h4>" . substr($line, 4) . "</h4>";
+                continue;
+            }
+            if (substr($line, 0, 5) === "#### ") {
+                $this->closeParagraph();
+                $this->content[] = "<h5>" . substr($line, 5) . "</h5>";
+                continue;
+            }
+            if (preg_match(self::PATTERN_TAGS, $line, $matches)) {
+                $article->tags = explode(",", $matches[1]);
+                continue;
+            }
+            if (preg_match(self::PATTERN_IMG, $line, $matches)) {
+                $this->closeParagraph();
+                $this->content[] = "<figure>";
+                $this->content[] = "    <img src=\"" . dirname($file_path) . "/$matches[1]\" alt=\"$matches[3]\">";
+                $this->content[] = "    <figcaption>$matches[3]</figcaption>";
+                $this->content[] = "</figure>";
+                continue;
+            }
+            if ($line === "") {
+                $this->closeParagraph();
+                continue;
+            } else {
+                if (!$this->in_p) {
+                    $this->content[] = "<p>";
+                    $this->in_p = true;
+                }
+                $this->p[] = $this->parseLine($line);
+            }
+        }
+        $this->closeParagraph();
+        array_unshift($this->content,
+            "<header>",
+            "    <h2>" . $article->title . "</h2>",
+            "    <nav>" . $this->getHtmlTags($article->tags) . "</nav>",
+            "</header>"
+        );
+        $this->content[] = "<footer>" .
+            preg_replace("/([0-9]+)\-([0-9]+)-([0-9]+)/", "$3/$2/$1", $article->date) .
+            "</footer>";
+        $view_path = "./data/cache/{$article->date}_{$article->ref}.phtml";
+        file_put_contents($view_path, "            " . implode("\n            ", $this->content) . "\n");
+        $article->view = $view_path;
+        $this->content = [];
+        return $article;
+    }
+
+    private function closeParagraph()
+    {
+        if ($this->in_p) {
+            $this->content[] = "    " . implode("<br>", $this->p);
+            $this->content[] = "</p>";
+            $this->in_p = false;
+            $this->p = [];
+        }
+    }
+
+    private function parseLine(string $line): string
+    {
+        $patterns = [
+            self::PATTERN_BOLD,
+            self::PATTERN_ITALIC,
+            self::PATTERN_UNDERLINE
+        ];
+        $replacements = [
+            self::REPLACE_BOLD,
+            self::REPLACE_ITALIC,
+            self::REPLACE_UNDERLINE
+        ];
+        return preg_replace($patterns, $replacements, htmlspecialchars($line, ENT_HTML5, UTF-8));
+    }
+
+    private function getHtmlTags(array $tags): string
+    {
+        $html = "";
+        foreach ($tags as $tag) {
+            $html .= "<a href=\"?view=tags&tag=$tag\" class=\"tag\">$tag</a>";
+        }
+        return $html;
+    }
+
+}
diff --git a/lib/Blog.php b/lib/Blog.php
new file mode 100644
index 0000000..f4a2df8
--- /dev/null
+++ b/lib/Blog.php
@@ -0,0 +1,113 @@
+<?php
+
+final class Blog
+{
+
+    private array $links = [];
+
+    public function run()
+    {
+        $this->loadConfig();
+        $this->render();
+    }
+
+    private function loadConfig()
+    {
+        require_once "config.php";
+        foreach ($links as $title => $url) {
+            $this->links[] = new Link($title, $url);
+        }
+    }
+
+    private function render()
+    {
+        extract($this->populateViews());
+        include "views/index.phtml";
+    }
+
+    private function populateViews(): array
+    {
+        return array_merge( 
+            ["lang" => BLOG_LANGUAGE],
+            $this->populateHeader(), 
+            $this->populateMainView(),
+            $this->populateBio(), 
+            $this->populateNavByTag(),
+            $this->populateNavByLatest(),
+            $this->populateFooter()
+        );
+    }
+
+    private function populateHeader(): array
+    {
+        return [
+            "title" => BLOG_TITLE,
+            "has_sub_title" => BLOG_SUB_TITLE !== "",
+            "sub_title" => BLOG_SUB_TITLE
+        ];
+    }
+
+    private function populateMainView(): array
+    {
+        $variables = [];
+        $view = filter_input(INPUT_GET, "view", FILTER_SANITIZE_STRING) ?: "single";
+        $variables["view"] = $view;
+        switch ($view) {
+            case "single":
+                $date = filter_input(INPUT_GET, "date", FILTER_SANITIZE_STRING);
+                $ref = filter_input(INPUT_GET, "ref", FILTER_SANITIZE_STRING);
+                $variables["article"] = ($date !== null and $ref !== null) ?
+                    ArticleManager::get(str_replace("-", "", $date) . $ref) :
+                    ArticleManager::getNewest();
+                break;
+            case "tags":
+                $tag = filter_input(INPUT_GET, "tag", FILTER_SANITIZE_STRING) ?: "";
+                $variables["articles"] = ArticleManager::getMultiple(TagManager::getFromTag($tag));
+                break;
+            case "archives":
+                $variables["dates"] = ArticleManager::getAll();;
+                break;
+        }
+        return $variables;
+    }
+
+    private function populateBio(): array
+    {
+        return [
+            "author" => AUTHOR_NICKNAME,
+            "bio" => AUTHOR_BIOGRAPHY,
+        ];
+    }
+
+    private function populateNavByTag(): array
+    {
+        return ["tags" => TagManager::getTags()];
+    }
+
+    private function populateNavByLatest(): array
+    {
+        return [
+            "latest" => ArticleManager::getLatestArticles(ARTICLE_COUNT_IN_NAV)
+        ];
+    }
+
+    private function populateFooter(): array
+    {
+        return [
+            "has_links" => count($this->links) > 0,
+            "links" => $this->links,
+            "footer" => $this->getFooterString()
+        ];
+    }
+
+    private function getFooterString(): string
+    {
+        $currentYear = getdate()["year"];
+        $footerYear = BLOG_CREATION_YEAR .
+            (BLOG_CREATION_YEAR !== $currentYear ? " - $currentYear" : "");
+        $footerAuthor = AUTHOR_NICKNAME .
+            (AUTHOR_REALNAME !== "" ? " (" . AUTHOR_REALNAME . ")" : "");
+        return "$footerYear. $footerAuthor";
+    }
+
+}
diff --git a/lib/Link.php b/lib/Link.php
new file mode 100644
index 0000000..ce914c2
--- /dev/null
+++ b/lib/Link.php
@@ -0,0 +1,15 @@
+<?php
+
+final class Link
+{
+
+    public string $title;
+    public string $url;
+
+    public function __construct(string $title, string $url)
+    {
+        $this->title = $title;
+        $this->url = $url;
+    }
+
+}
diff --git a/lib/TagManager.php b/lib/TagManager.php
new file mode 100644
index 0000000..96cf169
--- /dev/null
+++ b/lib/TagManager.php
@@ -0,0 +1,29 @@
+<?php
+
+final class TagManager
+{
+
+    const BASE_PATH = "./data/tags";
+
+    public static function getTags(): array
+    {
+        $tags = [];
+        foreach (array_diff(scandir(self::BASE_PATH), [".", ".."]) as $file) {
+            $tags[] = $file;
+        }
+        return $tags;
+    }
+
+    public static function getFromTag(string $tag): array
+    {
+        return file(self::BASE_PATH . "/$tag", FILE_IGNORE_NEW_LINES);
+    }
+
+    public static function add(array $tags, string $fullref)
+    {
+        foreach ($tags as $tag) {
+            file_put_contents(self::BASE_PATH . "/$tag", "$fullref\n", FILE_APPEND);
+        }
+    }
+
+}
diff --git a/views/archives.phtml b/views/archives.phtml
new file mode 100644
index 0000000..f4d1a77
--- /dev/null
+++ b/views/archives.phtml
@@ -0,0 +1,12 @@
+        <ul class="archives">
+<?php foreach ($dates as $date): ?>
+            <li class="date">
+                <h3><?=$date->str?></h3>
+                <ul class="articles">
+<?php     foreach ($date->articles as $article): ?>
+                    <li class="article"><a href="?view=single&date=<?=$article->date?>"><?=$article->title?></a></li>
+<?php     endforeach  ?>
+                </ul>
+            </li>
+<?php endforeach ?>
+        </ul>
diff --git a/views/aside.phtml b/views/aside.phtml
new file mode 100644
index 0000000..90f8d98
--- /dev/null
+++ b/views/aside.phtml
@@ -0,0 +1,7 @@
+    <aside>
+<?php
+include "views/bio.phtml";
+include "views/nav-by-tag.phtml";
+include "views/nav-by-latest.phtml";
+?>
+    </aside>
diff --git a/views/bio.phtml b/views/bio.phtml
new file mode 100644
index 0000000..3117918
--- /dev/null
+++ b/views/bio.phtml
@@ -0,0 +1,7 @@
+        <div class="bio">
+            <figure>
+                <img src="./data/images/avatar.jpg" alt="<?=$author?>" class="portrait">
+                <figcaption><?=$author?></figcaption>
+            </figure>
+            <p><?=$bio?></p>
+        </div>
diff --git a/views/footer.phtml b/views/footer.phtml
new file mode 100644
index 0000000..bb0b7a7
--- /dev/null
+++ b/views/footer.phtml
@@ -0,0 +1,10 @@
+    <footer>
+<?php if ($has_links): ?>
+        <ul class="links">
+<?php foreach ($links as $link): ?>
+            <li><a rel="me" href="<?=$link->url?>" class="<?=$link->title?>"><?=$link->title?></a></li>
+<?php endforeach ?>
+        </ul>
+<?php endif ?>
+        <p><?=$footer?></p>
+    </footer>
diff --git a/views/header.phtml b/views/header.phtml
new file mode 100644
index 0000000..1f9cc0e
--- /dev/null
+++ b/views/header.phtml
@@ -0,0 +1,6 @@
+    <header>
+        <h1><?=$title?></h1>
+<?php if ($has_sub_title): ?>
+        <h2><?=$sub_title?></h2>
+<?php endif ?>
+    </header>
diff --git a/views/index.phtml b/views/index.phtml
new file mode 100644
index 0000000..d46d673
--- /dev/null
+++ b/views/index.phtml
@@ -0,0 +1,16 @@
+<!doctype html>
+<html lang="<?=$lang?>">
+<head>
+    <meta charset="utf-8">
+    <title><?=$title?></title>
+    <link href="css/blog.css" rel="stylesheet" title="Style par défaut" type="text/css">
+</head>
+<body>
+<?php
+include "views/header.phtml";
+include "views/main.phtml";
+include "views/aside.phtml";
+include "views/footer.phtml";
+?>
+</body>
+</html>
diff --git a/views/main.phtml b/views/main.phtml
new file mode 100644
index 0000000..27b8e9e
--- /dev/null
+++ b/views/main.phtml
@@ -0,0 +1,3 @@
+    <main>
+<?php include "views/$view.phtml"; ?>
+    </main>
diff --git a/views/nav-by-latest.phtml b/views/nav-by-latest.phtml
new file mode 100644
index 0000000..8ea3d9e
--- /dev/null
+++ b/views/nav-by-latest.phtml
@@ -0,0 +1,6 @@
+        <nav class="latest">
+<?php foreach ($latest as $prev): ?>
+            <a href="?view=single&date=<?=$prev->date?>&ref=<?=$prev->ref?>"><?=$prev->title?></a>
+<?php endforeach ?>
+            <a href="?view=archives">Archives</a>
+        </nav>
diff --git a/views/nav-by-tag.phtml b/views/nav-by-tag.phtml
new file mode 100644
index 0000000..d4ac6ac
--- /dev/null
+++ b/views/nav-by-tag.phtml
@@ -0,0 +1,5 @@
+        <nav class="tags">
+<?php foreach ($tags as $tag): ?>
+            <a href="?view=tags&tag=<?=$tag?>"><?=$tag?></a>
+<?php endforeach ?>
+        </nav>
diff --git a/views/single.phtml b/views/single.phtml
new file mode 100644
index 0000000..f5c588f
--- /dev/null
+++ b/views/single.phtml
@@ -0,0 +1,3 @@
+        <article>
+<?php $article->render(); ?>
+        </article>
diff --git a/views/tags.phtml b/views/tags.phtml
new file mode 100644
index 0000000..67f02b1
--- /dev/null
+++ b/views/tags.phtml
@@ -0,0 +1,5 @@
+        <ul class="articles">
+<?php foreach ($articles as $article): ?>
+            <li><a href="?view=single&date=<?=$article->date?>&ref=<?=$article->ref?>"><?=$article->title?></a></li>
+<?php endforeach ?>
+        </ul>