commit c8bbc35886ef354ae4cfb7af19fe858f27b4d6af
Author: Clément <clement@desmidt.fr>
Date:   Mon Feb 22 16:38:47 2021 +0100

    :tada: Hello world

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..23d2d48
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+/.idea
+/main.php
+/test.jpg
+/pool/*
+!/pool/.gitkeep
+/vendor
+/config.json
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..08e27f5
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,21 @@
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diff --git a/composer.lock b/composer.lock
new file mode 100644
index 0000000..70317ed
--- /dev/null
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+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2020-09-07T11:33:47+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": [],
+    "plugin-api-version": "2.0.0"
+}
diff --git a/config.json.template b/config.json.template
new file mode 100644
index 0000000..5a096a1
--- /dev/null
+++ b/config.json.template
@@ -0,0 +1,16 @@
+{
+  "collectors": [],
+  "pool": {
+    "directory": "/home/user/webcollage/pool",
+    "nb_images": 10
+  },
+  "assembler": {
+    "sizex": 2000,
+    "sizey": 2000,
+    "mirror": false,
+    "emboss": true,
+    "invert": false,
+    "nbx": 5,
+    "nby": 5
+  }
+}
\ No newline at end of file
diff --git a/pool/.gitkeep b/pool/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/Assembler.php b/src/Assembler.php
new file mode 100644
index 0000000..27f3492
--- /dev/null
+++ b/src/Assembler.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace Shikiryu\WebGobbler;
+
+abstract class Assembler
+{
+    /**
+     * @var \Shikiryu\WebGobbler\Pool
+     */
+    protected $pool;
+
+    /**
+     * @var \Shikiryu\WebGobbler\Config
+     */
+    protected $config;
+
+    /**
+     * Assembler constructor.
+     *
+     * @param \Shikiryu\WebGobbler\Pool   $pool
+     * @param \Shikiryu\WebGobbler\Config $config
+     */
+    public function __construct(Pool $pool, Config $config)
+    {
+        $this->pool = $pool;
+        $this->config = $config;
+    }
+
+    /**
+     * @param string $file
+     *
+     * @return void
+     */
+    abstract public function saveTo($file);
+
+    abstract public function display();
+}
\ No newline at end of file
diff --git a/src/Assembler/Mosaic.php b/src/Assembler/Mosaic.php
new file mode 100644
index 0000000..ecb0330
--- /dev/null
+++ b/src/Assembler/Mosaic.php
@@ -0,0 +1,48 @@
+<?php
+
+namespace Shikiryu\WebGobbler\Assembler;
+
+use Shikiryu\WebGobbler\Assembler;
+
+class Mosaic extends Assembler
+{
+    /**
+     * @param string $file
+     *
+     * @return void
+     * @throws \ImagickException
+     */
+    public function saveTo($file)
+    {
+        $final_image = new \Imagick();
+        $final_image->setColorspace(\Imagick::COLORSPACE_RGB);
+        $final_image->newImage($this->config->get('assembler.sizex'), $this->config->get('assembler.sizey'), 'none');
+        $image_size_x = $this->config->get('assembler.sizex') / $this->config->get('assembler.nbx');
+        $image_size_y = $this->config->get('assembler.sizey') / $this->config->get('assembler.nby');
+        for ($y = 0; $y < $this->config->get('assembler.nby'); $y++) {
+            for ($x = 0; $x < $this->config->get('assembler.nbx'); $x++) {
+                $image = new \Imagick($this->pool->getImage());
+                if ($image->getColorspace() !== \Imagick::COLORSPACE_RGB) {
+                    $image->setColorspace(\Imagick::COLORSPACE_RGB);
+                }
+                $image->scaleImage($image_size_x, $image_size_y, true);
+                $final_image->compositeImage($image, \Imagick::COMPOSITE_DEFAULT, $x * $image_size_x, $y * $image_size_y);
+            }
+        }
+        if (true === $this->config->get('assembler.mirror')) {
+            $final_image->flopImage();
+        }
+        if (true === $this->config->get('assembler.emboss')) {
+            $final_image->embossImage(0, 1);
+        }
+        if (true === $this->config->get('assembler.invert')) {
+            $final_image->negateImage(false);
+        }
+        $final_image->writeImage($file);
+    }
+
+    public function display()
+    {
+        // TODO: Implement display() method.
+    }
+}
\ No newline at end of file
diff --git a/src/Assembler/Simple.php b/src/Assembler/Simple.php
new file mode 100644
index 0000000..e786787
--- /dev/null
+++ b/src/Assembler/Simple.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace Shikiryu\WebGobbler\Assembler;
+
+use Shikiryu\WebGobbler\Assembler;
+
+class Simple extends Assembler
+{
+    /**
+     * @param string $file
+     */
+    public function saveTo($file)
+    {
+        try {
+            $image = new \Imagick($this->pool->getImage());
+            if ($image->getColorspace() !== \Imagick::COLORSPACE_RGB) {
+                $image->setColorspace(\Imagick::COLORSPACE_RGB);
+            }
+            $size = $image->getSize();
+            $imagex = $size['columns'];
+            $imagey = $size['rows'];
+            if ($imagex !== $this->config->get('assembler.sizex') || $imagey !== $this->config->get('assembler.sizey')) {
+                $image->thumbnailImage($this->config->get('assembler.sizex'), $this->config->get('assembler.sizey'));
+            }
+            if (true === $this->config->get('assembler.mirror')) {
+                $image->flopImage();
+            }
+            if (true === $this->config->get('assembler.emboss')) {
+                $image->embossImage(0, 1);
+            }
+            if (true === $this->config->get('assembler.invert')) {
+                $image->flipImage();
+            }
+            $image->writeImage($file);
+        } catch (\ImagickException $e) {
+            echo $e->getMessage();
+        }
+    }
+
+    public function display()
+    {
+        // TODO: Implement display() method.
+    }
+}
\ No newline at end of file
diff --git a/src/Assembler/Superpose.php b/src/Assembler/Superpose.php
new file mode 100644
index 0000000..3d812db
--- /dev/null
+++ b/src/Assembler/Superpose.php
@@ -0,0 +1,177 @@
+<?php
+
+namespace Shikiryu\WebGobbler\Assembler;
+
+use Imagick;
+use Shikiryu\WebGobbler\Assembler;
+
+class Superpose extends Assembler
+{
+    /**
+     * @var Imagick
+     */
+    private $current_image;
+
+    /**
+     * @param string $file
+     *
+     * @return void
+     * @throws \ImagickException
+     * @throws \Exception
+     */
+    public function saveTo($file)
+    {
+        $image_to_superpose = new \Imagick($this->pool->getImage());
+        $image_x = $image_to_superpose->getImageWidth();
+        $image_y = $image_to_superpose->getImageHeight();
+        if ($image_x < 32 || $image_y < 32) {
+            throw new \Exception('Image too small.');
+        }
+
+        $this->current_image = $image_to_superpose;
+
+        $nb_images = $this->config->get('assembler.superpose.min_num_images', 5);
+        for ($i = 0; $i < $nb_images; $i++) {
+            $this->current_image = $this->superpose();
+        }
+        $this->current_image->writeImage($file);
+    }
+
+    public function superpose()
+    {
+        return $this->superposeOneImage($this->current_image, new \Imagick($this->pool->getImage()));
+    }
+
+    /**
+     * Superposes one image in the current image.
+     * This method must only be called by the assembler_superpose thread !
+     *
+     * @param \Imagick $current_image
+     * @param \Imagick $image_to_superpose
+     *
+     * @return \Imagick
+     * @throws \Exception
+     */
+    private function superposeOneImage($current_image, $image_to_superpose)
+    {
+        if ($this->config->get('assembler.superpose.variante', 0) === 1) {
+            $current_image->brightnessContrastImage(0.99, 1);
+        }
+        if ($image_to_superpose->getColorspace() !== \Imagick::COLORSPACE_RGB) {
+            $image_to_superpose->setColorspace(\Imagick::COLORSPACE_RGB);
+        }
+
+        # If the image is bigger than current image, scale it down to 1/2 of final picture dimensions
+        # (while keeping its ratio)
+        $image_x = $image_to_superpose->getImageWidth();
+        $image_y = $image_to_superpose->getImageHeight();
+        if ($image_x > $this->config->get('assembler.sizex') || $image_y > $this->config->get('assembler.sizey')) {
+            try {
+                $image_to_superpose->scaleImage($this->config->get('assembler.sizex') / 2, $this->config->get('assembler.sizey') / 2, true);
+            } catch (\ImagickException $e) {
+            }
+        }
+
+        # Scale down/up image if required.
+        /*scaleValue = self.CONFIG["assembler.superpose.scale"]
+        if str(scaleValue) != "1.0":
+            try:
+                imageToSuperpose.thumbnail((int(float(imagex)*scaleValue),int(float(imagey)*scaleValue)),Image.ANTIALIAS)
+            except TypeError:  #TypeError: unsubscriptable object  ; Spurious exception in PIL.  :-(
+                raise BadImage
+        (imagex,imagey) = imageToSuperpose.size*/
+
+        # Compensate for poorly-contrasted images on the web
+        /*try:
+            imageToSuperpose = ImageOps.autocontrast(imageToSuperpose)
+        except TypeError:  # Aaron tells me that this exception occurs with PNG images.
+            raise BadImage*/
+
+        # Some image are too white.
+        # For example, the photo of a coin on a white background.
+        # These picture degrad the quality of the final image.
+        # We try to dectect them by summing the value of the pixels
+        # on the borders.
+        # If the image is considered "white", we invert it.
+        /*pixelcount = 1  # 1 to prevent divide by zero error.
+        valuecount = 0
+        try:
+            for x in range(0,imagex,20):
+                (r,g,b) = imageToSuperpose.getpixel((x,5))
+                valuecount += r+g+b
+                (r,g,b) = imageToSuperpose.getpixel((x,imagey-5))
+                valuecount += r+g+b
+                pixelcount += 2
+            for y in range(0,imagey,20):
+                (r,g,b) = imageToSuperpose.getpixel((5,y))
+                valuecount += r+g+b
+                (r,g,b) = imageToSuperpose.getpixel((imagex-5,y))
+                valuecount += r+g+b
+                pixelcount += 2
+        except TypeError:  #unsubscriptable object  Arrggghh... not again !
+            raise BadImage   # Aggrrreeeuuuu...
+
+        # If the average r+g+b of the border pixels exceed this value,
+        # we consider the image is too white, and we invert it.
+        if (100*(valuecount/(255*3))/pixelcount)>60:  # Cut at 60%.  (100% is RGB=(255,255,255))
+            imageToSuperpose = ImageOps.invert(imageToSuperpose)*/
+
+        $paste_coords_x = random_int(-$image_x, $this->config->get('assembler.sizex'));
+        $paste_coords_y = random_int(-$image_y, $this->config->get('assembler.sizey'));
+
+        # Darken image borders
+        $image_to_superpose = $this->darkenImageBorder($image_to_superpose, 30);
+
+        if ($this->config->get('assembler.superpose.randomrotation', false)) {
+            $image_to_superpose->rotateImage('none', random_int(0, 359));
+            $image_to_superpose = $this->darkenImageBorder($image_to_superpose, 30);
+        }
+
+//        mask_image = ImageOps.autocontrast(imageToSuperpose.convert('L'))
+
+//        if (self.CONFIG["assembler.superpose.variante"]==1) and (random.randint(0,100)<5):  # Invert the transparency of 5% of the images (Except if we are in variante 1 mode)
+//            mask_image = ImageOps.invert(mask_image)
+        $current_image->compositeImage($image_to_superpose, \Imagick::COMPOSITE_DEFAULT, $paste_coords_x, $paste_coords_y);
+
+        if ($this->config->get('assembler.superpose.variante') === 0) {
+            $current_image->equalizeImage();
+        } else {
+            $current_image->autoLevelImage();
+        }
+
+        return $current_image;
+    }
+
+    /**
+     * @param \Imagick $image
+     * @param int|null     $border_size
+     *
+     * @return \Imagick
+     */
+    private function darkenImageBorder(Imagick $image, $border_size = null)
+    {
+        if (null === $border_size) {
+            $border_size = $this->config->get('assembler.superpose.bordersmooth');
+        }
+
+        $image_x = $image->getImageWidth();
+        $image_y = $image->getImageHeight();
+
+        for ($i = 0; $i < $border_size; $i++) {
+            $draw = new \ImagickDraw();
+            $draw->setStrokeOpacity(($border_size-$i)/$border_size);
+            $draw->setStrokeWidth(1);
+            $draw->setStrokeColor('black');
+            $draw->setFillColor('none');
+            $draw->rectangle($i, $i, $image_x - $i, $image_y - $i);
+            $image->drawImage($draw);
+        }
+
+        return $image;
+    }
+
+    public function display()
+    {
+        // TODO: Implement display() method.
+    }
+}
\ No newline at end of file
diff --git a/src/Collector.php b/src/Collector.php
new file mode 100644
index 0000000..7a0b9bd
--- /dev/null
+++ b/src/Collector.php
@@ -0,0 +1,120 @@
+<?php
+
+namespace Shikiryu\WebGobbler;
+
+abstract class Collector
+{
+    /**
+     * Collector constructor.
+     *
+     * @param \Shikiryu\WebGobbler\Pool $pool
+     */
+    public function __construct(Pool $pool)
+    {
+        $this->pool = $pool;
+    }
+
+    /**
+     * @return string
+     */
+    abstract public function getName();
+
+    /**
+     * @return string
+     */
+    public function getPoolDirectory()
+    {
+        return sprintf('%s/%s', $this->pool->getPoolDirectory(), $this->getName());
+    }
+
+    /**
+     * @return int
+     */
+    abstract public function getRandomImage();
+
+    /**
+     * @param int $number
+     *
+     * @return int
+     */
+    abstract public function getRandomImages(int $number);
+
+
+    /**
+     * Generates a random word.
+     * This method can be used by all derived classes.
+     * Usefull to get random result from search engines when you do not have
+     * a dictionnary at hand.
+     * The generated word can be a number (containing only digits),
+     * a word (containing only letters) or both mixed.
+     * Output: string (a random word)
+     *
+     * @return string
+     */
+    protected function generateRandomWord()
+    {
+        $word = '1';
+        try {
+            if (random_int(0, 100) < 30) { // Sometimes use only digits
+                if (random_int(0, 100) < 30) {
+                    $word = random_int(1, 999);
+                } else {
+                    $word = random_int(1, 999999);
+                }
+            } else { // Generate a word containing letters
+                $word = '';
+                $charset = 'abcdefghijklmnopqrstuvwxyz'; // Search for random word containing letter only.
+                if (random_int(0, 100) < 60) { // Sometimes include digits with letters
+                    $charset = 'abcdefghijklmnopqrstuvwxyz' . 'abcdefghijklmnopqrstuvwxyz' . '0123456789';  // *2 to have more letters than digits
+                }
+                $charset = str_split($charset);
+                for ($i = 0, $l = random_int(2, 5); $i <= $l; $i++) { //  Only generate short words (2 to 5 characters)
+                    $word .= $charset[array_rand($charset)];
+                }
+            }
+        } catch (\Exception $e) {
+        }
+
+        return $word;
+    }
+
+    /**
+     * @param array $parts
+     *
+     * @return string
+     */
+    protected function reverse_url(array $parts) {
+        if (array_key_exists('query', $parts) && is_array($parts['query'])) {
+            $parts['query'] = http_build_query($parts['query']);
+        }
+        return (isset($parts['scheme']) ? "{$parts['scheme']}:" : '') .
+            ((isset($parts['user']) || isset($parts['host'])) ? '//' : '') .
+            (isset($parts['user']) ? "{$parts['user']}" : '') .
+            (isset($parts['pass']) ? ":{$parts['pass']}" : '') .
+            (isset($parts['user']) ? '@' : '') .
+            (isset($parts['host']) ? "{$parts['host']}" : '') .
+            (isset($parts['port']) ? ":{$parts['port']}" : '') .
+            (isset($parts['path']) ? "{$parts['path']}" : '') .
+            (isset($parts['query']) ? "?{$parts['query']}" : '') .
+            (isset($parts['fragment']) ? "#{$parts['fragment']}" : '');
+    }
+
+    /**
+     * @param \Shikiryu\WebGobbler\Pool $pool
+     *
+     * @return \Shikiryu\WebGobbler\Collector[]
+     */
+    public static function getAllCollectors(Pool $pool)
+    {
+        $collectors = [];
+        foreach (glob(__DIR__ . '/Collector/*.php') as $class) {
+            $classname = sprintf('Shikiryu\\WebGobbler\\Collector\\%s', basename($class, '.php'));
+            $tmp_class = new $classname($pool);
+            if (is_subclass_of($tmp_class, __CLASS__)) {
+                $collectors[] = $tmp_class;
+            }
+        }
+
+        return $collectors;
+    }
+}
diff --git a/src/Collector/DeviantartCollector.php b/src/Collector/DeviantartCollector.php
new file mode 100644
index 0000000..b71d725
--- /dev/null
+++ b/src/Collector/DeviantartCollector.php
@@ -0,0 +1,65 @@
+<?php
+
+namespace Shikiryu\WebGobbler\Collector;
+
+use Goutte\Client;
+use Shikiryu\WebGobbler\Collector;
+
+class DeviantartCollector extends Collector
+{
+    /**
+     *
+     */
+    public const RANDOM_URL = 'https://www.deviantart.com/popular/deviations';
+    /**
+     * Regular expression to extract the maximum deviantionID from homepage
+     */
+    public const RE_ALLDEVIATIONID = '/href="https:\/\/www.deviantart.com\/[^\/]+\/art\/([^"]+)"/m';
+
+    /**
+     * @return int
+     */
+    public function getRandomImage()
+    {
+        return $this->getRandomImages(1);
+    }
+
+    /**
+     * @param int $number
+     *
+     * @return int
+     */
+    public function getRandomImages(int $number = 1)
+    {
+        $html = file_get_contents(self::RANDOM_URL);
+        preg_match_all(self::RE_ALLDEVIATIONID, $html, $deviant_ids);
+        $deviant_ids = array_map(static function ($deviant_id) {
+            $array = explode('-', $deviant_id);
+
+            return (int)end($array);
+        }, $deviant_ids[1]);
+        $deviant_ids = array_unique($deviant_ids);
+
+        $index_to_download = array_rand($deviant_ids, $number);
+        if (!is_array($index_to_download)) {
+            $index_to_download = [$index_to_download];
+        }
+
+        foreach ($index_to_download as $deviant_id) {
+            $client = new Client();
+            $crawler = $client->request('GET', 'https://www.deviantart.com/deviation/'.$deviant_ids[$deviant_id]);
+            $img_url = $crawler->filter('[data-hook="art_stage"] img')->eq(0)->attr('src');
+            file_put_contents($this->getPoolDirectory() . '/' . basename(parse_url($img_url, PHP_URL_PATH)), file_get_contents($img_url));
+        }
+
+        return $number; // Fixme
+    }
+
+    /**
+     * @return string
+     */
+    public function getName()
+    {
+        return 'collector_deviantart';
+    }
+}
diff --git a/src/Collector/LocalCollector.php b/src/Collector/LocalCollector.php
new file mode 100644
index 0000000..035af67
--- /dev/null
+++ b/src/Collector/LocalCollector.php
@@ -0,0 +1,43 @@
+<?php
+
+namespace Shikiryu\WebGobbler\Collector;
+
+use Shikiryu\WebGobbler\Collector;
+
+class LocalCollector extends Collector
+{
+    /**
+     * @var string
+     */
+    public $directory_to_scan = '';
+    /**
+     * @var string[]
+     */
+    public $filepaths = [];
+
+    /**
+     * @return int|void
+     */
+    public function getRandomImage()
+    {
+        
+    }
+
+    /**
+     * @return string
+     */
+    public function getName()
+    {
+        return 'collector_local';
+    }
+
+    /**
+     * @param int $number
+     *
+     * @return int
+     */
+    public function getRandomImages(int $number)
+    {
+        // TODO: Implement getRandomImages() method.
+    }
+}
\ No newline at end of file
diff --git a/src/Collector/YahooImageCollector.php b/src/Collector/YahooImageCollector.php
new file mode 100644
index 0000000..ad2f3f3
--- /dev/null
+++ b/src/Collector/YahooImageCollector.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace Shikiryu\WebGobbler\Collector;
+
+use Goutte\Client;
+use Shikiryu\WebGobbler\Collector;
+
+class YahooImageCollector extends Collector
+{
+    public const SEARCH_URL = 'https://images.search.yahoo.com/search/images?p=%s';
+
+    /**
+     * @return string
+     */
+    public function getName()
+    {
+        return 'collector_yahooimage';
+    }
+
+    /**
+     * @return int
+     */
+    public function getRandomImage()
+    {
+        $word_to_search = $this->generateRandomWord();
+
+        $client = new Client();
+        $crawler = $client->request('GET', sprintf(self::SEARCH_URL, $word_to_search));
+        $imgs = $crawler->filter('noscript img');
+        if ($imgs->count() < 20) {
+            return $this->getRandomImage();
+        }
+
+        $img_url = $imgs->eq(random_int(0, $imgs->count() - 1))->attr('src');
+        $parsed_url = parse_url( $img_url );
+        parse_str( $parsed_url['query'] , $url_vars );
+        $name = $url_vars['id'];
+        unset($url_vars['w'], $url_vars['h']);
+        $parsed_url['query'] = $url_vars;
+        $img_url = $this->reverse_url($parsed_url);
+
+        file_put_contents($this->getPoolDirectory() . '/'. $name . '.jpg', file_get_contents($img_url));
+
+        return 1;
+    }
+
+    /**
+     * @param int $number
+     *
+     * @return int
+     */
+    public function getRandomImages(int $number)
+    {
+        $count = 0;
+        for ($i = 0; $i < $number; $i++) {
+            $count += $this->getRandomImage();
+        }
+
+        return $count;
+    }
+}
diff --git a/src/Config.php b/src/Config.php
new file mode 100644
index 0000000..43ca335
--- /dev/null
+++ b/src/Config.php
@@ -0,0 +1,72 @@
+<?php
+
+namespace Shikiryu\WebGobbler;
+
+class Config
+{
+    protected $data = null;
+
+    protected $cache = [];
+
+
+    /**
+     * Config constructor.
+     * @throws \JsonException
+     * @throws \Exception
+     */
+    public function __construct($config_file)
+    {
+        if (!is_readable($config_file)) {
+            throw new \Exception('Config file doesn\'t exist or is unreadable.');
+        }
+
+        $this->data = json_decode(file_get_contents($config_file), true, 512, JSON_THROW_ON_ERROR);
+    }
+
+    /**
+     * @param      $key
+     * @param null $default
+     *
+     * @return mixed|null
+     */
+    public function get($key, $default = null)
+    {
+        if ($this->has($key)) {
+            return $this->cache[$key];
+        }
+
+        return $default;
+    }
+
+    /**
+     * @param string $key
+     *
+     * @return bool
+     */
+    public function has($key)
+    {
+        // Check if already cached
+        if (isset($this->cache[$key])) {
+            return true;
+        }
+
+        $segments = explode('.', $key);
+        $root = $this->data;
+
+        // nested case
+        foreach ($segments as $segment) {
+            if (array_key_exists($segment, $root)) {
+                $root = $root[$segment];
+                continue;
+            }
+
+            return false;
+        }
+
+        // Set cache for the given key
+        $this->cache[$key] = $root;
+
+        return true;
+    }
+
+}
diff --git a/src/Pool.php b/src/Pool.php
new file mode 100644
index 0000000..9d0e2ae
--- /dev/null
+++ b/src/Pool.php
@@ -0,0 +1,109 @@
+<?php
+
+namespace Shikiryu\WebGobbler;
+
+class Pool
+{
+    protected $file_list = [];
+
+    /**
+     * @var \Shikiryu\WebGobbler\Collector[]
+     */
+    protected $collectors = [];
+
+    /**
+     * @var string
+     */
+    protected $pool_directory;
+
+    /**
+     * @var int
+     */
+    protected $nb_images = 0;
+
+    /**
+     * Pool constructor.
+     *
+     * @param array $config
+     */
+    public function __construct(array $config)
+    {
+        $collectors = [];
+        if (array_key_exists('collectors', $config)) {
+            $collectors = $config['collectors'];
+        }
+
+        $all_collectors = Collector::getAllCollectors($this);
+        if (empty($collectors)) {
+            $this->collectors = $all_collectors;
+        } else {
+            foreach ($all_collectors as $collector) {
+                if (in_array($collector->getName(), $collectors, true)) {
+                    $this->collectors[] = $collector;
+                }
+            }
+        }
+
+        $pool_dir = $config['directory'];
+        if (!is_dir($pool_dir) && !mkdir($pool_dir) && !is_dir($pool_dir)) {
+            throw new \RuntimeException(sprintf('Directory "%s" was not created', $pool_dir));
+        }
+
+        $this->pool_directory = $pool_dir;
+
+        $this->nb_images = $config['nb_images']; // FIXME
+
+        $this->prepareCollectors();
+    }
+
+    public function getPoolDirectory()
+    {
+        return $this->pool_directory;
+    }
+
+    /**
+     * @return string
+     */
+    public function getImage()
+    {
+        $images = $this->getFileList();
+
+        $index = array_rand($images);
+        $image = $images[$index];
+
+        unset($this->file_list[$index]);
+
+        return $image;
+    }
+
+    /**
+     * @return array
+     */
+    private function getFileList()
+    {
+        if (!empty($this->file_list)) {
+            return $this->file_list;
+        }
+
+        $file_list = [];
+        foreach ($this->collectors as $collector) {
+            $directory = $collector->getPoolDirectory();
+            $file_list = array_merge($file_list, glob($directory.'/*.{jpg,gif,png}', GLOB_BRACE));
+        }
+
+        $this->file_list = $file_list;
+
+        return $file_list;
+    }
+
+    private function prepareCollectors()
+    {
+        foreach ($this->collectors as $collector) {
+            $directory = $collector->getPoolDirectory();
+            $images = glob($directory.'/*.{jpg,gif,png}', GLOB_BRACE);
+            if (count($images) < $this->nb_images) {
+                $collector->getRandomImages($this->nb_images - count($images));
+            }
+        }
+    }
+}