<?php

namespace FL\Assistant\System\Container;

class InjectionException extends InjectorException {

	public $dependencyChain;

	public function __construct( array $inProgressMakes, $message = '', $code = 0, \Exception $previous = null ) {
		$this->dependencyChain = array_flip( $inProgressMakes );
		ksort( $this->dependencyChain );

		parent::__construct( $message, $code, $previous );
	}

	/**
	 * Add a human readable version of the invalid callable to the standard 'invalid invokable' message.
	 */
	public static function fromInvalidCallable(
		array $inProgressMakes,
		$callableOrMethodStr,
		\Exception $previous = null
	) {
		$callableString = null;

		if ( is_string( $callableOrMethodStr ) ) {
			$callableString .= $callableOrMethodStr;
		} elseif ( is_array( $callableOrMethodStr ) &&
			array_key_exists( 0, $callableOrMethodStr ) &&
			array_key_exists( 0, $callableOrMethodStr ) ) {
			if ( is_string( $callableOrMethodStr[0] ) && is_string( $callableOrMethodStr[1] ) ) {
				$callableString .= $callableOrMethodStr[0] . '::' . $callableOrMethodStr[1];
			} elseif ( is_object( $callableOrMethodStr[0] ) && is_string( $callableOrMethodStr[1] ) ) {
				$callableString .= sprintf(
					"[object(%s), '%s']",
					get_class( $callableOrMethodStr[0] ),
					$callableOrMethodStr[1]
				);
			}
		}

		if ( $callableString ) {
			// Prevent accidental usage of long strings from filling logs.
			$callableString = substr( $callableString, 0, 250 );
			$message = sprintf(
				"%s. Invalid callable was '%s'",
				Injector::M_INVOKABLE,
				$callableString
			);
		} else {
			$message = \Auryn\Injector::M_INVOKABLE;
		}

		return new self( $inProgressMakes, $message, Injector::E_INVOKABLE, $previous );
	}

	/**
	 * Returns the hierarchy of dependencies that were being created when
	 * the exception occurred.
	 * @return array
	 */
	public function getDependencyChain() {
		return $this->dependencyChain;
	}
}