Add photo miniatures creation logic to Photo::saveFile

Web/Models/Entities/Photo.php

@@ -1,5 +1,6 @@
 <?php declare(strict_types=1);
 namespace openvk\Web\Models\Entities;
+use MessagePack\MessagePack;
 use openvk\Web\Models\Entities\Album;
 use openvk\Web\Models\Repositories\Albums;
 use Chandler\Database\DatabaseConnection as DB;
@@ -13,13 +14,73 @@ class Photo extends Media
 
     const ALLOWED_SIDE_MULTIPLIER = 7;
 
+    private function resizeImage(string $filename, string $outputDir, \SimpleXMLElement $size): array
+    {
+        $res   = [false];
+        $image = Image::fromFile($filename);
+        $requiresProportion = ((string) $size["requireProp"]) != "none";
+        if($requiresProportion) {
+            $props = explode(":", (string) $size["requireProp"]);
+            $px = (int) $props[0];
+            $py = (int) $props[1];
+            if(($image->getWidth() / $image->getHeight()) > ($px / $py)) {
+                # For some weird reason using resize with EXACT flag causes system to consume an unholy amount of RAM
+                $image->crop(0, 0, "100%", (int) ceil(($px * $image->getWidth()) / $py));
+            }
+        }
+
+        if(isset($size["maxSize"])) {
+            $maxSize = (int) $size["maxSize"];
+            $image->resize($maxSize, $maxSize, Image::SHRINK_ONLY | Image::FIT);
+        } else if(isset($size["maxResolution"])) {
+            $resolution = explode("x", (string) $size["maxResolution"]);
+            $image->resize((int) $resolution[0], (int) $resolution[1], Image::SHRINK_ONLY | Image::FIT);
+        } else {
+            throw new \RuntimeException("Malformed size description: " . (string) $size["id"]);
+        }
+
+        $res[1] = $image->getWidth();
+        $res[2] = $image->getHeight();
+        if($res[1] <= 300 || $res[2] <= 300)
+            $image->save("$outputDir/" . (string) $size["id"] . ".gif");
+        else
+            $image->save("$outputDir/" . (string) $size["id"] . ".jpeg");
+
+        imagedestroy($image->getImageResource());
+        unset($image);
+
+        return $res;
+    }
+
+    private function saveImageResizedCopies(string $filename, string $hash): void
+    {
+        $dir = dirname($this->pathFromHash($hash));
+        $dir = "$dir/$hash" . "_cropped";
+        if(!is_dir($dir))
+            mkdir($dir);
+
+        $sizes = simplexml_load_file(OPENVK_ROOT . "/data/photosizes.xml");
+        if(!$sizes)
+            throw new \RuntimeException("Could not load photosizes.xml!");
+
+        $sizesMeta = [];
+        foreach($sizes->Size as $size)
+            $sizesMeta[(string) $size["id"]] = $this->resizeImage($filename, $dir, $size);
+
+        $sizesMeta = MessagePack::pack($sizesMeta);
+        $this->stateChanges("sizes", $sizesMeta);
+    }
+
     protected function saveFile(string $filename, string $hash): bool
     {
         $image = Image::fromFile($filename);
         if(($image->height >= ($image->width * Photo::ALLOWED_SIDE_MULTIPLIER)) || ($image->width >= ($image->height * Photo::ALLOWED_SIDE_MULTIPLIER)))
             throw new ISE("Invalid layout: image is too wide/short");
 
+        $image->resize(8192, 4320, Image::SHRINK_ONLY | Image::FIT);
         $image->save($this->pathFromHash($hash), 92, Image::JPEG);
+        $this->saveImageResizedCopies($filename, $hash);
+        $this->getDimensions(); # propagate dimensions info in DB
         
         return true;
     }
@@ -46,23 +107,98 @@ class Photo extends Media
         DB::i()->getContext()->table("album_relations")->where("media", $this->getRecord()->id)->delete();
     }
 
-	function getDimensions(): array
-	{
+    function getSizes(): ?array
+    {
+        $sizes = $this->getRecord()->sizes;
+        if(!$sizes) {
+            if(OPENVK_ROOT_CONF["openvk"]["preferences"]["photos"]["upgradeStructure"]) {
+                $hash  = $this->getRecord()->hash;
+                $this->saveImageResizedCopies($this->pathFromHash($hash), $hash);
+                $this->save();
+
+                return $this->getSizes();
+            }
+
+            return NULL;
+        }
+
+        $res   = [];
+        $sizes = MessagePack::unpack($sizes);
+        foreach($sizes as $id => $meta) {
+            $url  = $this->getURL();
+            $url  = str_replace(".$this->fileExtension", "_cropped/$id.", $url);
+            $url .= ($meta[1] <= 300 || $meta[2] <= 300) ? "gif" : "jpeg";
+
+            $res[$id] = (object) [
+                "url"    => $url,
+                "width"  => $meta[1],
+                "height" => $meta[2],
+                "crop"   => $meta[0]
+            ];
+        }
+
+        [$x, $y] = $this->getDimensions();
+        $res["UPLOADED_MAXRES"] = (object) [
+            "url"    => $this->getURL(),
+            "width"  => $x,
+            "height" => $y,
+            "crop"   => false
+        ];
+
+        return $res;
+    }
+
+    function getVkApiSizes(): ?array
+    {
+        $res   = [];
+        $sizes = $this->getSizes();
+        if(!$sizes)
+            return NULL;
+
+        $manifest = simplexml_load_file(OPENVK_ROOT . "/data/photosizes.xml");
+        if(!$manifest)
+            return NULL;
+
+        $mappings = [];
+        foreach($manifest->Size as $size)
+            $mappings[(string) $size["id"]] = (string) $size["vkId"];
+
+        foreach($sizes as $id => $meta)
+            $res[$mappings[$id] ?? $id] = $meta;
+
+        return $res;
+    }
+
+    function getURLBySizeId(string $size): string
+    {
+        $sizes = $this->getSizes();
+        if(!$sizes)
+            return $this->getURL();
+
+        $size = $sizes[$size];
+        if(!$size)
+            return $this->getURL();
+
+        return $size->url;
+    }
+
+    function getDimensions(): array
+    {
         $x = $this->getRecord()->width;
         $y = $this->getRecord()->height;
         if(!$x) { # no sizes in database
             $hash  = $this->getRecord()->hash;
-            $image = new \Imagick($this->pathFromHash($hash));
+            $image = Image::fromFile($this->pathFromHash($hash));
 
-            $x = $image->getImageWidth();
-            $y = $image->getImageHeight();
+            $x = $image->getWidth();
+            $y = $image->getHeight();
             $this->stateChanges("width", $x);
             $this->stateChanges("height", $y);
             $this->save();
         }
 
         return [$x, $y];
-	}
+    }
 
     function getAlbum(): ?Album
     {
@@ -80,10 +216,14 @@ class Photo extends Media
         $res->height   = $this->getDimensions()[1];
         $res->date     = $res->created = $this->getPublicationTime()->timestamp();
 
-        $res->src =
-            $res->src_small = $res->src_big = $res->src_xbig = $res->src_xxbig =
-            $res->src_xxxbig = $res->photo_75 = $res->photo_130 = $res->photo_604 =
-            $res->photo_807 = $res->photo_1280 = $res->photo_2560 = $this->getURL();
+        $res->sizes        = $this->getVkApiSizes();
+        $res->src_small    = $res->photo_75 = $this->getURLBySizeId("miniscule");
+        $res->src          = $res->photo_130 = $this->getURLBySizeId("tiny");
+        $res->src_big      = $res->photo_604 = $this->getURLBySizeId("normal");
+        $res->src_xbig     = $res->photo_807 = $this->getURLBySizeId("large");
+        $res->src_xxbig    = $res->photo_1280 = $this->getURLBySizeId("larger");
+        $res->src_xxxbig   = $res->photo_2560 = $this->getURLBySizeId("original");
+        $res->src_original = $res->url = $this->getURLBySizeId("UPLOADED_MAXRES");
 
         return $res;
     }

composer.json

@@ -14,7 +14,8 @@
         "chillerlan/php-qrcode": "dev-main",
         "vearutop/php-obscene-censor-rus": "dev-master",
         "erusev/parsedown": "dev-master",
-        "bhaktaraz/php-rss-generator": "dev-master"
+        "bhaktaraz/php-rss-generator": "dev-master",
+        "ext-simplexml": "*"
     },
     "minimum-stability": "dev"
 }

data/photosizes.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<PhotoSizes name="standard">
+    <Size id="miniscule" vkId="s" maxSize="75" requireProp="none" />
+    <Size id="tiny" vkId="m" maxSize="130" requireProp="none" />
+    <Size id="tinier" vkId="o" maxSize="130" requireProp="3:2" />
+    <Size id="xsmall" vkId="p" maxSize="200" requireProp="3:2" />
+    <Size id="small" vkId="q" maxSize="320" requireProp="3:2" />
+    <Size id="medium" vkId="r" maxSize="510" requireProp="3:2" />
+    <Size id="normal" vkId="x" maxSize="604" requireProp="none" />
+    <Size id="large" vkId="y" maxSize="807" requireProp="none" />
+    <Size id="larger" vkId="z" maxResolution="1080x1024" requireProp="none" />
+    <Size id="original" vkId="w" maxResolution="2560x2048" requireProp="none" />
+</PhotoSizes>

install/sqls/00020-image-sizes.sql

@@ -1,3 +1,3 @@
 ALTER TABLE `photos` ROW_FORMAT=COMPRESSED;
-ALTER TABLE `photos` ADD COLUMN `sizes` VARBINARY(256) NULL DEFAULT NULL AFTER `hash`;
+ALTER TABLE `photos` ADD COLUMN `sizes` VARBINARY(486) NULL DEFAULT NULL AFTER `hash`;
 ALTER TABLE `photos` ADD COLUMN `width` SMALLINT UNSIGNED NULL DEFAULT NULL AFTER `sizes`, ADD COLUMN `height` SMALLINT UNSIGNED NULL DEFAULT NULL AFTER `sizes`;

openvk-example.yml

@@ -17,6 +17,8 @@ openvk:
             minLength: 3 # won't affect existing short urls or the ones set via admin panel
             forbiddenNames:
                 - "index.php"
+        photos:
+            upgradeStructure: true
         security:
             requireEmail: false
             requirePhone: false