Rename the constructor Ebook::__construct() to static Ebook::FromFilesystem()

Also added `GetFoo()` methods for all the derived properties like `GetUrl()`, `GetHasDownloads()`, etc. Removed that logic from the constructor so that it's reusable in `Ebook::FromFilesystem()` and `Ebook::GetByIdentifier()`

lib/Collection.php

@@ -1,19 +1,33 @@
 <?
 use function Safe\preg_replace;
 
+/**
+ * @property string $Url
+ */
 class Collection{
+	use Traits\Accessor;
+
 	public string $Name;
 	public string $UrlName;
-	public string $Url;
 	public ?int $SequenceNumber = null;
 	public ?string $Type = null;
+	protected ?string $_Url = null;
 
-	public function __construct(string $name){
-		$this->Name = $name;
-		$this->UrlName = Formatter::MakeUrlSafe($this->Name);
+	protected function GetUrl(): ?string{
+		if($this->_Url === null){
 			$this->Url = '/collections/' . $this->UrlName;
 		}
 
+		return $this->_Url;
+	}
+
+	public static function FromName(string $name): Collection{
+		$instance = new Collection();
+		$instance->Name = $name;
+		$instance->UrlName = Formatter::MakeUrlSafe($instance->Name);
+		return $instance;
+	}
+
 	public function GetSortedName(): string{
 		return preg_replace('/^(the|and|a|)\s/ius', '', $this->Name);
 	}

lib/Contributor.php

@@ -8,13 +8,15 @@ class Contributor{
 	public ?string $FullName = null;
 	public ?string $NacoafUrl = null;
 
-	public function __construct(string $name, string $sortName = null, string $fullName = null, string $wikipediaUrl = null, string $marcRole = null, string $nacoafUrl = null){
-		$this->Name = str_replace('\'', '’', $name);
-		$this->UrlName = Formatter::MakeUrlSafe($name);
-		$this->SortName = $sortName;
-		$this->FullName = $fullName;
-		$this->WikipediaUrl = $wikipediaUrl;
-		$this->MarcRole = $marcRole;
-		$this->NacoafUrl = $nacoafUrl;
+	public static function FromProperties(string $name, string $sortName = null, string $fullName = null, string $wikipediaUrl = null, string $marcRole = null, string $nacoafUrl = null): Contributor{
+		$instance = new Contributor();
+		$instance->Name = str_replace('\'', '’', $name);
+		$instance->UrlName = Formatter::MakeUrlSafe($name);
+		$instance->SortName = $sortName;
+		$instance->FullName = $fullName;
+		$instance->WikipediaUrl = $wikipediaUrl;
+		$instance->MarcRole = $marcRole;
+		$instance->NacoafUrl = $nacoafUrl;
+		return $instance;
 	}
 }

lib/EbookSource.php

@@ -3,8 +3,10 @@ class EbookSource{
 	public EbookSourceType $Type;
 	public string $Url;
 
-	public function __construct(EbookSourceType $type, string $url){
-		$this->Type = $type;
-		$this->Url = $url;
+	public static function FromTypeAndUrl(EbookSourceType $type, string $url): EbookSource{
+		$instance = new EbookSource();
+		$instance->Type = $type;
+		$instance->Url = $url;
+		return $instance;
 	}
 }

lib/GitCommit.php

@@ -9,14 +9,16 @@ class GitCommit{
 	/**
 	 * @throws Exceptions\InvalidGitCommitException
 	 */
-	public function __construct(string $unixTimestamp, string $hash, string $message){
+	public static function FromLog(string $unixTimestamp, string $hash, string $message): GitCommit{
+		$instance = new GitCommit();
 		try{
-			$this->Created = new DateTimeImmutable('@' . $unixTimestamp);
+			$instance->Created = new DateTimeImmutable('@' . $unixTimestamp);
 		}
 		catch(\Exception){
 			throw new Exceptions\InvalidGitCommitException('Invalid timestamp for Git commit.');
 		}
-		$this->Message = $message;
-		$this->Hash = $hash;
+		$instance->Message = $message;
+		$instance->Hash = $hash;
+		return $instance;
 	}
 }

lib/Library.php

@@ -433,7 +433,7 @@ class Library{
 			try{
 				$ebookWwwFilesystemPath = preg_replace('|/content\.opf|ius', '', $path);
 
-				$ebooks[] = new Ebook($ebookWwwFilesystemPath);
+				$ebooks[] = Ebook::FromFilesystem($ebookWwwFilesystemPath);
 			}
 			catch(\Exception){
 				// An error in a book isn't fatal; just carry on.
@@ -704,7 +704,7 @@ class Library{
 			try{
 				$ebookWwwFilesystemPath = preg_replace('|/content\.opf|ius', '', $filename);
 
-				$ebook = new Ebook($ebookWwwFilesystemPath);
+				$ebook = Ebook::FromFilesystem($ebookWwwFilesystemPath);
 
 				$ebooks[$ebookWwwFilesystemPath] = $ebook;
 

lib/LocSubject.php

@@ -1,6 +1,7 @@
 <?
-class LocSubject extends Tag{
+class LocSubject{
 	public int $LocSubjectId;
+	public string $Name;
 
 	/**
 	 * @throws Exceptions\ValidationException

www/ebooks/download.php

@@ -20,7 +20,7 @@ try{
 		$ebook = apcu_fetch('ebook-' . $wwwFilesystemPath);
 	}
 	catch(Safe\Exceptions\ApcuException){
-		$ebook = new Ebook($wwwFilesystemPath);
+		$ebook = Ebook::FromFilesystem($wwwFilesystemPath);
 	}
 
 	switch($format){

www/ebooks/ebook.php

@@ -7,7 +7,7 @@ use function Safe\preg_replace;
 use function Safe\apcu_fetch;
 use function Safe\shuffle;
 
-$ebook = new Ebook();
+$ebook = null;
 $transcriptionSources = [];
 $scanSources = [];
 $otherSources = [];
@@ -45,7 +45,7 @@ try{
 		$ebook = apcu_fetch('ebook-' . $wwwFilesystemPath);
 	}
 	catch(Safe\Exceptions\ApcuException){
-		$ebook = new Ebook($wwwFilesystemPath);
+		$ebook = Ebook::FromFilesystem($wwwFilesystemPath);
 	}
 
 	// Divide our sources into transcriptions and scans