<?php


	namespace error\core;

	use \error\core\Err;

	class Error{

		private $error     = null;
		private $arguments = [];

		/* ERROR CONSTRUCTOR
		*
		* @error<const> 										Const error
		* @arg1<String>											[OPT] Argument 1
		* @arg2<String>											[OPT] Argument 2
		* @arg...<String>										[OPT] Argument ...
		*
		* @return instance<Error> 								Error instance
		*
		*/
		public function __construct($const){
			call_user_func_array([$this, 'set'], func_get_args());
		}

		/* ERROR GETTER
		*
		* @return Err<Err::Constant> 					Error
		*
		*/
		public function get(){ return $this->error; }

		/* ERROR SETTER
		*
		* @error<const> 										Const error
		* @arg1<String>											[OPT] Argument 1
		* @arg2<String>											[OPT] Argument 2
		* @arg...<String>										[OPT] Argument ...
		*
		* @return instance<Error> 								Error instance
		*
		*/
		public function set($const){
			/* [1] On découpe les arguments
			=========================================================*/
			/* (1) On récupère l'erreur */
			$this->error = !is_numeric($const) ? Err::UnknownError : $const;

			/* (2) On récupère les arguments */
			$this->arguments = array_slice(func_get_args(), 1);
		}


		/* EXPLICITE UN CODE D'ERREUR
		*
		* @return explicit<String> 							Description explicite du code d'erreur
		*
		*/
		public function explicit(){
			switch($this->error){
				case Err::Success:             return $this->Success();             break;
				case Err::ParsingFailed:       return $this->ParsingFailed();       break;
				case Err::UnreachableResource: return $this->UnreachableResource(); break;
				case Err::UploadError:         return $this->UploadError();         break;
				case Err::FormatError:         return $this->FormatError();         break;
				case Err::TokenError:          return $this->TokenError();          break;
				case Err::PermissionError:     return $this->PermissionError();     break;
				case Err::DisabledModule:      return $this->DisabledModule();      break;
				case Err::MissingPath:         return $this->MissingPath();         break;
				case Err::WrongPathModule:     return $this->WrongPathModule();     break;
				case Err::UnknownModule:       return $this->UnknownModule();       break;
				case Err::UnknownMethod:       return $this->UnknownMethod();       break;
				case Err::UncallableModule:    return $this->UncallableModule();    break;
				case Err::UncallableMethod:    return $this->UncallableMethod();    break;
				case Err::UnknownHttpMethod:   return $this->UnknownHttpMethod();   break;
				case Err::ConfigError:         return $this->ConfigError();        break;
				case Err::MissingParam:        return $this->MissingParam();        break;
				case Err::WrongParam:          return $this->WrongParam();          break;
				case Err::ModuleError:         return $this->ModuleError();         break;
				case Err::InvalidURI:          return $this->InvalidURI();          break;
				case Err::PDOConnection:       return $this->PDOConnection();       break;
				case Err::WrongPathRepo:       return $this->WrongPathRepo();       break;
				case Err::UnknownRepo:         return $this->UnknownRepo();         break;
				case Err::RepoError:           return $this->RepoError();           break;
				case Err::UnknownTable:        return $this->UnknownTable();        break;
				case Err::NotAllowedSchema:    return $this->NotAllowedSchema();    break;
				case Err::NoMatchFound:        return $this->NoMatchFound();        break;
				case Err::UnknownTemplate:     return $this->UnknownTemplate();     break;
				case Err::UnknownAddress:      return $this->UnknownAddress();      break;
				case Err::UnknownError:        return $this->UnknownError();        break;
				case Err::AlreadyExists:       return $this->AlreadyExists();       break;
				case Err::MissingBody:         return $this->MissingBody();         break;
				case Err::MissingHeaders:      return $this->MissingHeaders();      break;

				default:                       return $this->UnknownDebugError();   break;
			}
		}


		private function Success(){
			return 'all right';
		}private function ParsingFailed(){
			if(	count($this->arguments) > 0 )
				return $this->arguments[0].' parsing failed';
			else
				return 'parsing failed';
		}private function UnreachableResource(){
			return 'unreachable resource';
		}private function UploadError(){
			return 'upload error';
		}private function FormatError(){
			return 'format error';
		}private function TokenError(){
			return 'bad or expired token';
		}private function PermissionError(){
			if(	count($this->arguments) > 0 )
				return "missing permission: '".$this->arguments[0]."'";
			else
				return 'permission error';
		}private function DisabledModule(){
			return 'disabled module';
		}private function MissingPath(){
			return 'missing path';
		}private function WrongPathModule(){
			return 'wrong module\'s path';
		}private function UnknownModule(){
			if(	count($this->arguments) > 0 )
				return 'unknown module \''.$this->arguments[0].'\'';
			else
				return 'unknown module';
		}private function UnknownMethod(){
			if(	count($this->arguments) > 0 )
				return 'unknown method \''.$this->arguments[0].'\'';
			else
				return 'unknown method';
		}private function UncallableModule(){
			if(	count($this->arguments) > 0 )
				return 'uncallable module \''.$this->arguments[0].'\'';
			else
				return 'uncallable module';
		}private function UncallableMethod(){
			if(	count($this->arguments) > 0 )
				return 'uncallable method \''.$this->arguments[0].'\'';
			else
				return 'uncallable method';
		}private function UnknownHttpMethod(){
			return 'unknown HTTP method';
		}private function ConfigError(){
			return 'configuration error';
		}private function MissingParam(){
			if(	count($this->arguments) > 0 )
				return 'missing param \''.$this->arguments[0].'\'';
			else
				return 'missing param';
		}private function WrongParam(){
			if(	count($this->arguments) > 0 )
				if(	count($this->arguments) > 1 )
					return 'wrong param \''.$this->arguments[0].'\' expected to be of type \''.$this->arguments[1].'\'';
				else
					return 'wrong param \''.$this->arguments[0].'\'';
			else
				return 'wrong param';
		}private function ModuleError(){
			if(	count($this->arguments) > 0 )
				return 'module error: \''.$this->arguments[0].'\'';
			else
				return 'module error';
		}private function InvalidURI(){
			return 'invalid URI';
		}private function PDOConnection(){
			return 'database error';
		}private function WrongPathRepo(){
			return 'wrong repository\'s path';
		}private function UnknownRepo(){
			return 'unknown repository';
		}private function RepoError(){
			return 'repository error';
		}private function UnknownTable(){
			return 'unknown table';
		}private function NotAllowedSchema(){
			return 'schema browsing not allowed';
		}private function NoMatchFound(){
			return 'no match found';
		}private function UnknownTemplate(){
			return 'unknown template';
		}private function UnknownAddress(){
			return 'unknown';
		}private function UnknownError(){
			return 'unknown error';
		}private function AlreadyExists(){
			return 'item already exists';
		}private function MissingBody(){
			return 'body is missing';
		}private function MissingHeaders(){
			return 'headers are missing';
		}private function UnknownDebugError(){
			return 'unknown debug error';
		}


		public function setHttpCode(){
			http_response_code( $this->error == Err::Success ? 200 : 417 );
		}

	}


?>