<?php
/**
 * Created by PhpStorm.
 * User: stanley-king
 * Date: 2018/8/14
 * Time: 上午11:15
 */

namespace room;

use Log;

class room_avatar
{
    static $avatar_relative_path = '/data/upload/room/avatars';
    static $avatar_path = BASE_UPLOAD_PATH . '/room/avatars';
    static $down_path   = BASE_UPLOAD_PATH . '/room/avatars/tmp';

    private $mRoomid;
    private $mPath;
    private $mDestImage;
    private $mInImages;
    private $mBaseName;
    public function __construct($roomid)
    {
        $this->mRoomid = $roomid;
        $this->mPath = self::$avatar_path . "/{$roomid}.png";
        $this->mBaseName = "{$roomid}.png";
        $this->mInImages = [];

        $bgfile = self::$avatar_path . "/background.png";
        $this->mDestImage = $this->create_image($bgfile);
    }

    public function make($avatars)
    {
        if(empty($avatars)) return false;
        if(count($avatars) <= 0) return false;

        foreach ($avatars as $avatar)
        {
            $pid = posix_getpid();
            $filename = self::$down_path . "/{$pid}";

            if(file_exists($filename)) unlink($filename);
            if($this->down($avatar,$filename) == false) continue;
            $image = self::create_image($filename);

            if(file_exists($filename)) unlink($filename);
            if($image === false) {
                Log::record("download error path={$avatar} filename={$filename}",Log::ERR);
                continue;
            }

            $this->mInImages[] = $image;
        }
        $count = count($this->mInImages);
        if($count <= 0) return false;

        $posex = $this->layout($count);

        $i = 0;
        foreach ($this->mInImages as $image)
        {
            if($i >= count($posex)) break;
            $pos = $posex[$i];
            imagecopyresized($this->mDestImage, $image, $pos['x'], $pos['y'], 0, 0, $pos['cx'], $pos['cy'], imagesx($image),imagesy($image));
            $i++;
        }
        $ret = imagepng($this->mDestImage, $this->mPath,0);
        if($ret === false) return false;

        return self::$avatar_relative_path . "/{$this->mBaseName}";
    }

    private function down($avatar,$filename)
    {
        $contents = http_request($avatar);
        if(empty($contents)) {
            Log::record("down {$avatar} empty.",Log::ERR);
            return false;
        }
        $file = fopen($filename,'w+');
        fwrite($file,$contents);
        fclose($file);

        return true;
    }

    private function layout($count)
    {
        if($count < 1) return false;

        switch ($count) {
            case 1: return $this->layout_1();
            case 2: return $this->layout_2();
            case 3: return $this->layout_3();
            case 4: return $this->layout_4();
            case 5: return $this->layout_5();
            case 6: return $this->layout_6();
            case 7: return $this->layout_7();
            case 8: return $this->layout_8();
            case 9: return $this->layout_9();
            default:
                return $this->layout_9();
        }
    }
    private function layout_1() {
        $cx = 800; $cy = 800;
        $result[] = ["x" => 0,'y' => 0,'cx' => $cx,'cy' => $cy];
        return $result;
    }

    private function layout_2()
    {
        $top_x = 0;
        $top_y = 195;
        $padding = 20;

        $cx = 370; $cy = 370;

        $result = [];
        $result[] = ["x" => $top_x + $padding,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];

        return $result;
    }

    private function layout_3()
    {
        $top_x = 195; $top_y = 0;
        $padding = 20; $cx = 370; $cy = 370;

        $result = [];
        $result[] = ["x" => $top_x + $padding,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];
        $top_x = 0;
        $top_y = 390;
        $result[] = ["x" => $top_x + $padding,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];

        return $result;
    }

    private function layout_4()
    {
        $top_x = 0;
        $top_y = 0;
        $padding = 20;

        $cx = 370;
        $cy = 370;

        $result = [];
        $result[] = ["x" => $top_x + $padding,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];

        $result[] = ["x" => $top_x + $padding,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];

        return $result;
    }

    private function layout_5()
    {
        $top_x = 130;
        $top_y = 130;

        $padding = 20; $cx = 240; $cy = 240;

        $result = [];
        $result[] = ["x" => $top_x + $padding,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];

        $top_x = 0;
        $result[] = ["x" => $top_x + $padding,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 3 + 2 * $cx,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];

        return $result;
    }

    private function layout_6()
    {
        $top_x = 0; $top_y = 130;
        $padding = 20; $cx = 240; $cy = 240;

        $result = [];
        $result[] = ["x" => $top_x + $padding,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 3 + 2 * $cx,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];

        $result[] = ["x" => $top_x + $padding,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 3 + 2 * $cx,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];

        return $result;
    }
    private function layout_7()
    {
        $top_x = 0; $top_y = 0;
        $padding = 20; $cx = 240; $cy = 240;

        $result = [];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];

        $result[] = ["x" => $top_x + $padding,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 3 + 2 * $cx,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];

        $result[] = ["x" => $top_x + $padding,'y' => $top_y + 3*$padding + 2*$cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + 3*$padding + 2*$cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 3 + 2 * $cx,'y' => $top_y + 3*$padding + 2*$cy,'cx' => $cx,'cy' => $cy];

        return $result;
    }

    private function layout_8()
    {
        $top_x = 130; $top_y = 0;
        $padding = 20; $cx = 240; $cy = 240;

        $result = [];
        $result[] = ["x" => $top_x + $padding,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];

        $top_x = 0; $top_y = 0;
        $result[] = ["x" => $top_x + $padding,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 3 + 2 * $cx,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];

        $result[] = ["x" => $top_x + $padding,'y' => $top_y + 3*$padding + 2*$cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + 3*$padding + 2*$cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 3 + 2 * $cx,'y' => $top_y + 3*$padding + 2*$cy,'cx' => $cx,'cy' => $cy];

        return $result;
    }

    private function layout_9()
    {
        $top_x = 0; $top_y = 0;
        $padding = 20; $cx = 240; $cy = 240;

        $result = [];
        $result[] = ["x" => $top_x + $padding,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 3 + 2 * $cx,'y' => $top_y + $padding,'cx' => $cx,'cy' => $cy];

        $result[] = ["x" => $top_x + $padding,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 3 + 2 * $cx,'y' => $top_y + 2*$padding + $cy,'cx' => $cx,'cy' => $cy];

        $result[] = ["x" => $top_x + $padding,'y' => $top_y + 3*$padding + 2*$cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 2 + $cx,'y' => $top_y + 3*$padding + 2*$cy,'cx' => $cx,'cy' => $cy];
        $result[] = ["x" => $top_x + $padding * 3 + 2 * $cx,'y' => $top_y + 3*$padding + 2*$cy,'cx' => $cx,'cy' => $cy];

        return $result;
    }

    private static function create_image($file)
    {
        $imagetype = exif_imagetype($file);

        Log::record("create_image type={$imagetype}",Log::DEBUG);
        if ($imagetype === false) {
            return false;
        }

        switch ($imagetype)
        {
            case IMAGETYPE_GIF:
                $image = @imagecreatefromgif($file);
                break;
            case IMAGETYPE_JPEG:
            case IMAGETYPE_JPEG2000:
                $image = @imagecreatefromjpeg($file);
                break;
            case IMAGETYPE_PNG:
                $image = @imagecreatefrompng($file);
                break;
            case IMAGETYPE_BMP:
                $image = @imagecreatefrombmp($file);
                break;
            default:
                return false;
        }

        return $image;
    }
}