<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;
use React\Promise\PromiseInterface;

/**
 * Downloader interface.
 *
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
interface DownloaderInterface
{
    /**
     * Returns installation source (either source or dist).
     *
     * @return string "source" or "dist"
     */
    public function getInstallationSource(): string;

    /**
     * This should do any network-related tasks to prepare for an upcoming install/update
     *
     * @param  string $path download path
     * @phpstan-return PromiseInterface<void|null|string>
     */
    public function download(
        PackageInterface $package,
        string $path,
        ?PackageInterface $prevPackage = null,
    ): PromiseInterface;

    /**
     * Do anything that needs to be done between all downloads have been completed and the actual operation is executed
     *
     * All packages get first downloaded, then all together prepared, then all together installed/updated/uninstalled. Therefore
     * for error recovery it is important to avoid failing during install/update/uninstall as much as possible, and risky things or
     * user prompts should happen in the prepare step rather. In case of failure, cleanup() will be called so that changes can
     * be undone as much as possible.
     *
     * @param  string                $type        one of install/update/uninstall
     * @param  PackageInterface      $package     package instance
     * @param  string                $path        download path
     * @param  PackageInterface      $prevPackage previous package instance in case of an update
     * @phpstan-return PromiseInterface<void|null>
     */
    public function prepare(
        string $type,
        PackageInterface $package,
        string $path,
        ?PackageInterface $prevPackage = null,
    ): PromiseInterface;

    /**
     * Installs specific package into specific folder.
     *
     * @param  PackageInterface      $package package instance
     * @param  string                $path    download path
     * @phpstan-return PromiseInterface<void|null>
     */
    public function install(PackageInterface $package, string $path): PromiseInterface;

    /**
     * Updates specific package in specific folder from initial to target version.
     *
     * @param  PackageInterface      $initial initial package
     * @param  PackageInterface      $target  updated package
     * @param  string                $path    download path
     * @phpstan-return PromiseInterface<void|null>
     */
    public function update(PackageInterface $initial, PackageInterface $target, string $path): PromiseInterface;

    /**
     * Removes specific package from specific folder.
     *
     * @param  PackageInterface      $package package instance
     * @param  string                $path    download path
     * @phpstan-return PromiseInterface<void|null>
     */
    public function remove(PackageInterface $package, string $path): PromiseInterface;

    /**
     * Do anything to cleanup changes applied in the prepare or install/update/uninstall steps
     *
     * Note that cleanup will be called for all packages, either after install/update/uninstall is complete,
     * or if any package failed any operation. This is to give all installers a change to cleanup things
     * they did previously, so you need to keep track of changes applied in the installer/downloader themselves.
     *
     * @param  string                $type        one of install/update/uninstall
     * @param  PackageInterface      $package     package instance
     * @param  string                $path        download path
     * @param  PackageInterface      $prevPackage previous package instance in case of an update
     * @phpstan-return PromiseInterface<void|null>
     */
    public function cleanup(
        string $type,
        PackageInterface $package,
        string $path,
        ?PackageInterface $prevPackage = null,
    ): PromiseInterface;
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NzMxMTI5MjAzNDIxNjg5OCAxMTUyNDgxMDk5NzI4OTAgMzAyNTY2NDYyOTE4MzUzNg==