<?php

namespace PSX\Schema\Generator;

use PSX\Schema\Generator\Type\GeneratorInterface;
use PSX\Schema\Type\ArrayType;
use PSX\Schema\Type\MapType;
use PSX\Schema\Type\ReferenceType;
use PSX\Schema\Type\StructType;
use PSX\Schema\Type\TypeAbstract;
use PSX\Schema\Type\UnionType;
use PSX\Schema\TypeUtil;

/**
 * Python
 *
 * @author  Christoph Kappestein <christoph.kappestein@gmail.com>
 * @license http://www.apache.org/licenses/LICENSE-2.0
 * @link    http://phpsx.org
 */
class Python extends CodeGeneratorAbstract
{
    /**
     * @inheritDoc
     */
    public function getFileName(string $file): string
    {
        return $file . '.py';
    }

    /**
     * @inheritDoc
     */
    protected function newTypeGenerator(array $mapping): GeneratorInterface
    {
        return new Type\Python($mapping);
    }

    /**
     * @inheritDoc
     */
    protected function writeStruct(
        string $name,
        array $properties,
        ?string $extends,
        ?array $generics,
        StructType $origin,
    ): string {
        $code = 'class ' . $name;

        if (!empty($extends)) {
            $code.= '(' . $extends . ')';
        }

        $code.= ':' . "\n";

        $items = [];
        $args = [];
        foreach ($properties as $name => $property) {
            /** @var Code\Property $property */
            $args[] = $name . ': ' . $property->getType();
            $items[] = $name;
        }

        $code.= $this->indent . 'def __init__(self, ' . implode(', ', $args) . '):' . "\n";
        foreach ($items as $item) {
            $code.= $this->indent . $this->indent . 'self.' . $item . ' = ' . $item . "\n";
        }

        return $code;
    }

    protected function writeMap(string $name, string $type, MapType $origin): string
    {
        $subType = $this->generator->getType($origin->getAdditionalProperties());

        return 'class ' . $name . '(Dict[str, ' . $subType . ']):' . "\n";
    }

    protected function writeReference(string $name, string $type, ReferenceType $origin): string
    {
        return 'class ' . $name . '(' . $type . '):' . "\n";
    }

    protected function writeHeader(TypeAbstract $origin): string
    {
        $code = '';

        if (!empty($this->namespace)) {
            // TODO can we namespace?
        }

        $imports = $this->getImports($origin);
        if (!empty($imports)) {
            $code.= "\n";
            $code.= implode("\n", $imports);
            $code.= "\n";
        }

        $code.= "\n";

        $comment = $origin->getDescription();
        if (!empty($comment)) {
            $code.= '# ' . $comment . "\n";
        }

        return $code;
    }

    private function getImports(TypeAbstract $origin): array
    {
        $imports = [];
        $imports[] = 'from typing import Any';

        if (TypeUtil::contains($origin, ArrayType::class)) {
            $imports[] = 'from typing import List';
        }

        if (TypeUtil::contains($origin, MapType::class)) {
            $imports[] = 'from typing import Dict';
        }

        if (TypeUtil::contains($origin, UnionType::class)) {
            $imports[] = 'from typing import Union';
        }

        return $imports;
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MzMzNjM1MTcyMzA2MTg3NSA5MTkyMzk4MjE5MzkyNCA1NzA4NTI0MDY2NTY0OTc=