kronostechnologies/graphql-framework

<?php


namespace Kronos\GraphQLFramework\Resolver\Context;


use Kronos\GraphQLFramework\FrameworkConfiguration;
use Kronos\GraphQLFramework\Resolver\Context\Exception\ArgumentsMustBeArrayException;
use Kronos\GraphQLFramework\Resolver\Context\Exception\VariablesMustBeArrayException;

class ContextUpdater
{
    /**
     * @var GraphQLContext
     */
    protected $activeContext;

    /**
     * @param object|null $root
     * @param array|null $arguments
     * @throws ArgumentsMustBeArrayException
     */
    public function setCurrentResolverPath($root, $arguments)
    {
        $argumentsToSet = $arguments;

        if ($argumentsToSet !== null && !is_array($argumentsToSet)) {
            throw new ArgumentsMustBeArrayException();
        }

        if ($argumentsToSet === null) {
            $argumentsToSet = [];
        }

        $this->activeContext = $this->getOrCreateContext()
            ->withCurrentArguments($argumentsToSet)
            ->withCurrentParentObject($root);
    }

    /**
     * @param FrameworkConfiguration $configuration
     */
    public function setConfiguration(FrameworkConfiguration $configuration)
    {
        $this->activeContext = $this->getOrCreateContext()
            ->withConfiguration($configuration);
    }

    /**
     * @param string $fullQueryString
     * @param array|null $variables
     * @throws VariablesMustBeArrayException
     */
    public function setInitialData($fullQueryString, $variables)
    {
        $variablesToSet = $variables;

        if ($variablesToSet !== null && !is_array($variablesToSet)) {
            throw new VariablesMustBeArrayException();
        }

        if ($variablesToSet === null) {
            $variablesToSet = [];
        }

        $this->activeContext = $this->getOrCreateContext()
            ->withFullQueryString($fullQueryString ?: "")
            ->withVariables($variablesToSet);
    }

    /**
     * @return GraphQLContext
     */
    protected function getOrCreateContext()
    {
        if ($this->activeContext === null) {
            $this->activeContext = $this->getDefaultContext();
        }

        return $this->activeContext;
    }

    /**
     * @return GraphQLContext
     */
    protected function getDefaultContext()
    {
        $initialContext = new GraphQLContext();

        return $initialContext
            ->withConfiguration(new FrameworkConfiguration())
            ->withCurrentArguments([])
            ->withCurrentParentObject(null)
            ->withFullQueryString("")
            ->withVariables([]);
    }

    /**
     * @return GraphQLContext
     */
    public function getActiveContext()
    {
        return $this->getOrCreateContext();
    }
}