// Copyright 2014 The Gogs Authors. All rights reserved.
// Copyright 2017 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.

package models

import (
	"context"
	"fmt"
	"strconv"

	_ "image/jpeg" // Needed for jpeg support

	admin_model "code.gitea.io/gitea/models/admin"
	asymkey_model "code.gitea.io/gitea/models/asymkey"
	"code.gitea.io/gitea/models/db"
	git_model "code.gitea.io/gitea/models/git"
	issues_model "code.gitea.io/gitea/models/issues"
	"code.gitea.io/gitea/models/organization"
	"code.gitea.io/gitea/models/perm"
	access_model "code.gitea.io/gitea/models/perm/access"
	project_model "code.gitea.io/gitea/models/project"
	repo_model "code.gitea.io/gitea/models/repo"
	"code.gitea.io/gitea/models/unit"
	user_model "code.gitea.io/gitea/models/user"
	"code.gitea.io/gitea/models/webhook"
	"code.gitea.io/gitea/modules/lfs"
	"code.gitea.io/gitea/modules/log"
	"code.gitea.io/gitea/modules/setting"
	"code.gitea.io/gitea/modules/storage"
	api "code.gitea.io/gitea/modules/structs"
	"code.gitea.io/gitea/modules/util"

	"xorm.io/builder"
)

// NewRepoContext creates a new repository context
func NewRepoContext() {
	unit.LoadUnitConfig()
}

// CheckRepoUnitUser check whether user could visit the unit of this repository
func CheckRepoUnitUser(ctx context.Context, repo *repo_model.Repository, user *user_model.User, unitType unit.Type) bool {
	if user != nil && user.IsAdmin {
		return true
	}
	perm, err := access_model.GetUserRepoPermission(ctx, repo, user)
	if err != nil {
		log.Error("GetUserRepoPermission(): %v", err)
		return false
	}

	return perm.CanRead(unitType)
}

// CreateRepoOptions contains the create repository options
type CreateRepoOptions struct {
	Name           string
	Description    string
	OriginalURL    string
	GitServiceType api.GitServiceType
	Gitignores     string
	IssueLabels    string
	License        string
	Readme         string
	DefaultBranch  string
	IsPrivate      bool
	IsMirror       bool
	IsTemplate     bool
	AutoInit       bool
	Status         repo_model.RepositoryStatus
	TrustModel     repo_model.TrustModelType
	MirrorInterval string
}

// CreateRepository creates a repository for the user/organization.
func CreateRepository(ctx context.Context, doer, u *user_model.User, repo *repo_model.Repository, overwriteOrAdopt bool) (err error) {
	if err = repo_model.IsUsableRepoName(repo.Name); err != nil {
		return err
	}

	has, err := repo_model.IsRepositoryExist(ctx, u, repo.Name)
	if err != nil {
		return fmt.Errorf("IsRepositoryExist: %v", err)
	} else if has {
		return repo_model.ErrRepoAlreadyExist{
			Uname: u.Name,
			Name:  repo.Name,
		}
	}

	repoPath := repo_model.RepoPath(u.Name, repo.Name)
	isExist, err := util.IsExist(repoPath)
	if err != nil {
		log.Error("Unable to check if %s exists. Error: %v", repoPath, err)
		return err
	}
	if !overwriteOrAdopt && isExist {
		log.Error("Files already exist in %s and we are not going to adopt or delete.", repoPath)
		return repo_model.ErrRepoFilesAlreadyExist{
			Uname: u.Name,
			Name:  repo.Name,
		}
	}

	if err = db.Insert(ctx, repo); err != nil {
		return err
	}
	if err = repo_model.DeleteRedirect(ctx, u.ID, repo.Name); err != nil {
		return err
	}

	// insert units for repo
	units := make([]repo_model.RepoUnit, 0, len(unit.DefaultRepoUnits))
	for _, tp := range unit.DefaultRepoUnits {
		if tp == unit.TypeIssues {
			units = append(units, repo_model.RepoUnit{
				RepoID: repo.ID,
				Type:   tp,
				Config: &repo_model.IssuesConfig{
					EnableTimetracker:                setting.Service.DefaultEnableTimetracking,
					AllowOnlyContributorsToTrackTime: setting.Service.DefaultAllowOnlyContributorsToTrackTime,
					EnableDependencies:               setting.Service.DefaultEnableDependencies,
				},
			})
		} else if tp == unit.TypePullRequests {
			units = append(units, repo_model.RepoUnit{
				RepoID: repo.ID,
				Type:   tp,
				Config: &repo_model.PullRequestsConfig{AllowMerge: true, AllowRebase: true, AllowRebaseMerge: true, AllowSquash: true, DefaultMergeStyle: repo_model.MergeStyle(setting.Repository.PullRequest.DefaultMergeStyle), AllowRebaseUpdate: true},
			})
		} else {
			units = append(units, repo_model.RepoUnit{
				RepoID: repo.ID,
				Type:   tp,
			})
		}
	}

	if err = db.Insert(ctx, units); err != nil {
		return err
	}

	// Remember visibility preference.
	u.LastRepoVisibility = repo.IsPrivate
	if err = user_model.UpdateUserCols(ctx, u, "last_repo_visibility"); err != nil {
		return fmt.Errorf("updateUser: %v", err)
	}

	if _, err = db.GetEngine(ctx).Incr("num_repos").ID(u.ID).Update(new(user_model.User)); err != nil {
		return fmt.Errorf("increment user total_repos: %v", err)
	}
	u.NumRepos++

	// Give access to all members in teams with access to all repositories.
	if u.IsOrganization() {
		teams, err := organization.FindOrgTeams(ctx, u.ID)
		if err != nil {
			return fmt.Errorf("loadTeams: %v", err)
		}
		for _, t := range teams {
			if t.IncludesAllRepositories {
				if err := addRepository(ctx, t, repo); err != nil {
					return fmt.Errorf("addRepository: %v", err)
				}
			}
		}

		if isAdmin, err := access_model.IsUserRepoAdmin(ctx, repo, doer); err != nil {
			return fmt.Errorf("IsUserRepoAdminCtx: %v", err)
		} else if !isAdmin {
			// Make creator repo admin if it wasn't assigned automatically
			if err = addCollaborator(ctx, repo, doer); err != nil {
				return fmt.Errorf("AddCollaborator: %v", err)
			}
			if err = repo_model.ChangeCollaborationAccessModeCtx(ctx, repo, doer.ID, perm.AccessModeAdmin); err != nil {
				return fmt.Errorf("ChangeCollaborationAccessMode: %v", err)
			}
		}
	} else if err = access_model.RecalculateAccesses(ctx, repo); err != nil {
		// Organization automatically called this in addRepository method.
		return fmt.Errorf("recalculateAccesses: %v", err)
	}

	if setting.Service.AutoWatchNewRepos {
		if err = repo_model.WatchRepo(ctx, doer.ID, repo.ID, true); err != nil {
			return fmt.Errorf("watchRepo: %v", err)
		}
	}

	if err = webhook.CopyDefaultWebhooksToRepo(ctx, repo.ID); err != nil {
		return fmt.Errorf("copyDefaultWebhooksToRepo: %v", err)
	}

	return nil
}

// DeleteRepository deletes a repository for a user or organization.
// make sure if you call this func to close open sessions (sqlite will otherwise get a deadlock)
func DeleteRepository(doer *user_model.User, uid, repoID int64) error {
	ctx, committer, err := db.TxContext()
	if err != nil {
		return err
	}
	defer committer.Close()
	sess := db.GetEngine(ctx)

	// In case is a organization.
	org, err := user_model.GetUserByIDCtx(ctx, uid)
	if err != nil {
		return err
	}

	repo := &repo_model.Repository{OwnerID: uid}
	has, err := sess.ID(repoID).Get(repo)
	if err != nil {
		return err
	} else if !has {
		return repo_model.ErrRepoNotExist{
			ID:        repoID,
			UID:       uid,
			OwnerName: "",
			Name:      "",
		}
	}

	// Delete Deploy Keys
	deployKeys, err := asymkey_model.ListDeployKeys(ctx, &asymkey_model.ListDeployKeysOptions{RepoID: repoID})
	if err != nil {
		return fmt.Errorf("listDeployKeys: %v", err)
	}
	needRewriteKeysFile := len(deployKeys) > 0
	for _, dKey := range deployKeys {
		if err := DeleteDeployKey(ctx, doer, dKey.ID); err != nil {
			return fmt.Errorf("deleteDeployKeys: %v", err)
		}
	}

	if cnt, err := sess.ID(repoID).Delete(&repo_model.Repository{}); err != nil {
		return err
	} else if cnt != 1 {
		return repo_model.ErrRepoNotExist{
			ID:        repoID,
			UID:       uid,
			OwnerName: "",
			Name:      "",
		}
	}

	if org.IsOrganization() {
		teams, err := organization.FindOrgTeams(ctx, org.ID)
		if err != nil {
			return err
		}
		for _, t := range teams {
			if !organization.HasTeamRepo(ctx, t.OrgID, t.ID, repoID) {
				continue
			} else if err = removeRepository(ctx, t, repo, false); err != nil {
				return err
			}
		}
	}

	attachments := make([]*repo_model.Attachment, 0, 20)
	if err = sess.Join("INNER", "`release`", "`release`.id = `attachment`.release_id").
		Where("`release`.repo_id = ?", repoID).
		Find(&attachments); err != nil {
		return err
	}
	releaseAttachments := make([]string, 0, len(attachments))
	for i := 0; i < len(attachments); i++ {
		releaseAttachments = append(releaseAttachments, attachments[i].RelativePath())
	}

	if _, err := db.Exec(ctx, "UPDATE `user` SET num_stars=num_stars-1 WHERE id IN (SELECT `uid` FROM `star` WHERE repo_id = ?)", repo.ID); err != nil {
		return err
	}

	if err := db.DeleteBeans(ctx,
		&access_model.Access{RepoID: repo.ID},
		&Action{RepoID: repo.ID},
		&repo_model.Collaboration{RepoID: repoID},
		&issues_model.Comment{RefRepoID: repoID},
		&git_model.CommitStatus{RepoID: repoID},
		&git_model.DeletedBranch{RepoID: repoID},
		&webhook.HookTask{RepoID: repoID},
		&git_model.LFSLock{RepoID: repoID},
		&repo_model.LanguageStat{RepoID: repoID},
		&issues_model.Milestone{RepoID: repoID},
		&repo_model.Mirror{RepoID: repoID},
		&Notification{RepoID: repoID},
		&git_model.ProtectedBranch{RepoID: repoID},
		&git_model.ProtectedTag{RepoID: repoID},
		&repo_model.PushMirror{RepoID: repoID},
		&Release{RepoID: repoID},
		&repo_model.RepoIndexerStatus{RepoID: repoID},
		&repo_model.Redirect{RedirectRepoID: repoID},
		&repo_model.RepoUnit{RepoID: repoID},
		&repo_model.Star{RepoID: repoID},
		&Task{RepoID: repoID},
		&repo_model.Watch{RepoID: repoID},
		&webhook.Webhook{RepoID: repoID},
	); err != nil {
		return fmt.Errorf("deleteBeans: %v", err)
	}

	// Delete Labels and related objects
	if err := issues_model.DeleteLabelsByRepoID(ctx, repoID); err != nil {
		return err
	}

	// Delete Pulls and related objects
	if err := issues_model.DeletePullsByBaseRepoID(ctx, repoID); err != nil {
		return err
	}

	// Delete Issues and related objects
	var attachmentPaths []string
	if attachmentPaths, err = issues_model.DeleteIssuesByRepoID(ctx, repoID); err != nil {
		return err
	}

	// Delete issue index
	if err := db.DeleteResouceIndex(ctx, "issue_index", repoID); err != nil {
		return err
	}

	if repo.IsFork {
		if _, err := db.Exec(ctx, "UPDATE `repository` SET num_forks=num_forks-1 WHERE id=?", repo.ForkID); err != nil {
			return fmt.Errorf("decrease fork count: %v", err)
		}
	}

	if _, err := db.Exec(ctx, "UPDATE `user` SET num_repos=num_repos-1 WHERE id=?", uid); err != nil {
		return err
	}

	if len(repo.Topics) > 0 {
		if err := repo_model.RemoveTopicsFromRepo(ctx, repo.ID); err != nil {
			return err
		}
	}

	projects, _, err := project_model.GetProjects(ctx, project_model.SearchOptions{
		RepoID: repoID,
	})
	if err != nil {
		return fmt.Errorf("get projects: %v", err)
	}
	for i := range projects {
		if err := project_model.DeleteProjectByIDCtx(ctx, projects[i].ID); err != nil {
			return fmt.Errorf("delete project [%d]: %v", projects[i].ID, err)
		}
	}

	// Remove LFS objects
	var lfsObjects []*git_model.LFSMetaObject
	if err = sess.Where("repository_id=?", repoID).Find(&lfsObjects); err != nil {
		return err
	}

	lfsPaths := make([]string, 0, len(lfsObjects))
	for _, v := range lfsObjects {
		count, err := db.CountByBean(ctx, &git_model.LFSMetaObject{Pointer: lfs.Pointer{Oid: v.Oid}})
		if err != nil {
			return err
		}
		if count > 1 {
			continue
		}

		lfsPaths = append(lfsPaths, v.RelativePath())
	}

	if _, err := db.DeleteByBean(ctx, &git_model.LFSMetaObject{RepositoryID: repoID}); err != nil {
		return err
	}

	// Remove archives
	var archives []*repo_model.RepoArchiver
	if err = sess.Where("repo_id=?", repoID).Find(&archives); err != nil {
		return err
	}

	archivePaths := make([]string, 0, len(archives))
	for _, v := range archives {
		p, _ := v.RelativePath()
		archivePaths = append(archivePaths, p)
	}

	if _, err := db.DeleteByBean(ctx, &repo_model.RepoArchiver{RepoID: repoID}); err != nil {
		return err
	}

	if repo.NumForks > 0 {
		if _, err = sess.Exec("UPDATE `repository` SET fork_id=0,is_fork=? WHERE fork_id=?", false, repo.ID); err != nil {
			log.Error("reset 'fork_id' and 'is_fork': %v", err)
		}
	}

	// Get all attachments with both issue_id and release_id are zero
	var newAttachments []*repo_model.Attachment
	if err := sess.Where(builder.Eq{
		"repo_id":    repo.ID,
		"issue_id":   0,
		"release_id": 0,
	}).Find(&newAttachments); err != nil {
		return err
	}

	newAttachmentPaths := make([]string, 0, len(newAttachments))
	for _, attach := range newAttachments {
		newAttachmentPaths = append(newAttachmentPaths, attach.RelativePath())
	}

	if _, err := sess.Where("repo_id=?", repo.ID).Delete(new(repo_model.Attachment)); err != nil {
		return err
	}

	if err = committer.Commit(); err != nil {
		return err
	}

	committer.Close()

	if needRewriteKeysFile {
		if err := asymkey_model.RewriteAllPublicKeys(); err != nil {
			log.Error("RewriteAllPublicKeys failed: %v", err)
		}
	}

	// We should always delete the files after the database transaction succeed. If
	// we delete the file but the database rollback, the repository will be broken.

	// Remove repository files.
	repoPath := repo.RepoPath()
	admin_model.RemoveAllWithNotice(db.DefaultContext, "Delete repository files", repoPath)

	// Remove wiki files
	if repo.HasWiki() {
		admin_model.RemoveAllWithNotice(db.DefaultContext, "Delete repository wiki", repo.WikiPath())
	}

	// Remove archives
	for _, archive := range archivePaths {
		admin_model.RemoveStorageWithNotice(db.DefaultContext, storage.RepoArchives, "Delete repo archive file", archive)
	}

	// Remove lfs objects
	for _, lfsObj := range lfsPaths {
		admin_model.RemoveStorageWithNotice(db.DefaultContext, storage.LFS, "Delete orphaned LFS file", lfsObj)
	}

	// Remove issue attachment files.
	for _, attachment := range attachmentPaths {
		admin_model.RemoveStorageWithNotice(db.DefaultContext, storage.Attachments, "Delete issue attachment", attachment)
	}

	// Remove release attachment files.
	for _, releaseAttachment := range releaseAttachments {
		admin_model.RemoveStorageWithNotice(db.DefaultContext, storage.Attachments, "Delete release attachment", releaseAttachment)
	}

	// Remove attachment with no issue_id and release_id.
	for _, newAttachment := range newAttachmentPaths {
		admin_model.RemoveStorageWithNotice(db.DefaultContext, storage.Attachments, "Delete issue attachment", newAttachment)
	}

	if len(repo.Avatar) > 0 {
		if err := storage.RepoAvatars.Delete(repo.CustomAvatarRelativePath()); err != nil {
			return fmt.Errorf("Failed to remove %s: %v", repo.Avatar, err)
		}
	}

	return nil
}

type repoChecker struct {
	querySQL   func(ctx context.Context) ([]map[string][]byte, error)
	correctSQL func(ctx context.Context, id int64) error
	desc       string
}

func repoStatsCheck(ctx context.Context, checker *repoChecker) {
	results, err := checker.querySQL(ctx)
	if err != nil {
		log.Error("Select %s: %v", checker.desc, err)
		return
	}
	for _, result := range results {
		id, _ := strconv.ParseInt(string(result["id"]), 10, 64)
		select {
		case <-ctx.Done():
			log.Warn("CheckRepoStats: Cancelled before checking %s for with id=%d", checker.desc, id)
			return
		default:
		}
		log.Trace("Updating %s: %d", checker.desc, id)
		err = checker.correctSQL(ctx, id)
		if err != nil {
			log.Error("Update %s[%d]: %v", checker.desc, id, err)
		}
	}
}

func StatsCorrectSQL(ctx context.Context, sql string, id int64) error {
	_, err := db.GetEngine(ctx).Exec(sql, id, id)
	return err
}

func repoStatsCorrectNumWatches(ctx context.Context, id int64) error {
	return StatsCorrectSQL(ctx, "UPDATE `repository` SET num_watches=(SELECT COUNT(*) FROM `watch` WHERE repo_id=? AND mode<>2) WHERE id=?", id)
}

func repoStatsCorrectNumStars(ctx context.Context, id int64) error {
	return StatsCorrectSQL(ctx, "UPDATE `repository` SET num_stars=(SELECT COUNT(*) FROM `star` WHERE repo_id=?) WHERE id=?", id)
}

func labelStatsCorrectNumIssues(ctx context.Context, id int64) error {
	return StatsCorrectSQL(ctx, "UPDATE `label` SET num_issues=(SELECT COUNT(*) FROM `issue_label` WHERE label_id=?) WHERE id=?", id)
}

func labelStatsCorrectNumIssuesRepo(ctx context.Context, id int64) error {
	_, err := db.GetEngine(ctx).Exec("UPDATE `label` SET num_issues=(SELECT COUNT(*) FROM `issue_label` WHERE label_id=id) WHERE repo_id=?", id)
	return err
}

func labelStatsCorrectNumClosedIssues(ctx context.Context, id int64) error {
	_, err := db.GetEngine(ctx).Exec("UPDATE `label` SET num_closed_issues=(SELECT COUNT(*) FROM `issue_label`,`issue` WHERE `issue_label`.label_id=`label`.id AND `issue_label`.issue_id=`issue`.id AND `issue`.is_closed=?) WHERE `label`.id=?", true, id)
	return err
}

func labelStatsCorrectNumClosedIssuesRepo(ctx context.Context, id int64) error {
	_, err := db.GetEngine(ctx).Exec("UPDATE `label` SET num_closed_issues=(SELECT COUNT(*) FROM `issue_label`,`issue` WHERE `issue_label`.label_id=`label`.id AND `issue_label`.issue_id=`issue`.id AND `issue`.is_closed=?) WHERE `label`.repo_id=?", true, id)
	return err
}

var milestoneStatsQueryNumIssues = "SELECT `milestone`.id FROM `milestone` WHERE `milestone`.num_closed_issues!=(SELECT COUNT(*) FROM `issue` WHERE `issue`.milestone_id=`milestone`.id AND `issue`.is_closed=?) OR `milestone`.num_issues!=(SELECT COUNT(*) FROM `issue` WHERE `issue`.milestone_id=`milestone`.id)"

func milestoneStatsCo
<?php
/**
 * @copyright Copyright (c) 2020, Daniel Calviño Sánchez (danxuliu@gmail.com)
 *
 * @author Daniel Calviño Sánchez <danxuliu@gmail.com>
 *
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 */
use Behat\Gherkin\Node\TableNode;
use PHPUnit\Framework\Assert;

require __DIR__ . '/../../vendor/autoload.php';

trait Avatar {
	/** @var string **/
	private $lastAvatar;

	/** @AfterScenario **/
	public function cleanupLastAvatar() {
		$this->lastAvatar = null;
	}

	private function getLastAvatar() {
		$this->lastAvatar = '';

		$body = $this->response->getBody();
		while (!$body->eof()) {
			$this->lastAvatar .= $body->read(8192);
		}
		$body->close();
	}

	/**
	 * @When user :user gets avatar for user :userAvatar
	 *
	 * @param string $user
	 * @param string $userAvatar
	 */
	public function userGetsAvatarForUser(string $user, string $userAvatar) {
		$this->userGetsAvatarForUserWithSize($user, $userAvatar, '128');
	}

	/**
	 * @When user :user gets avatar for user :userAvatar with size :size
	 *
	 * @param string $user
	 * @param string $userAvatar
	 * @param string $size
	 */
	public function userGetsAvatarForUserWithSize(string $user, string $userAvatar, string $size) {
		$this->asAn($user);
		$this->sendingToDirectUrl('GET', '/index.php/avatar/' . $userAvatar . '/' . $size);
		$this->theHTTPStatusCodeShouldBe('200');

		$this->getLastAvatar();
	}

	/**
	 * @When user :user gets avatar for guest :guestAvatar
	 *
	 * @param string $user
	 * @param string $guestAvatar
	 */
	public function userGetsAvatarForGuest(string $user, string $guestAvatar) {
		$this->asAn($user);
		$this->sendingToDirectUrl('GET', '/index.php/avatar/guest/' . $guestAvatar . '/128');
		$this->theHTTPStatusCodeShouldBe('201');

		$this->getLastAvatar();
	}

	/**
	 * @When logged in user gets temporary avatar
	 */
	public function loggedInUserGetsTemporaryAvatar() {
		$this->loggedInUserGetsTemporaryAvatarWith('200');
	}

	/**
	 * @When logged in user gets temporary avatar with :statusCode
	 *
	 * @param string $statusCode
	 */
	public function loggedInUserGetsTemporaryAvatarWith(string $statusCode) {
		$this->sendingAToWithRequesttoken('GET', '/index.php/avatar/tmp');
		$this->theHTTPStatusCodeShouldBe($statusCode);

		$this->getLastAvatar();
	}

	/**
	 * @When logged in user posts temporary avatar from file :source
	 *
	 * @param string $source
	 */
	public function loggedInUserPostsTemporaryAvatarFromFile(string $source) {
		$file = \GuzzleHttp\Psr7\Utils::streamFor(fopen($source, 'r'));

		$this->sendingAToWithRequesttoken('POST', '/index.php/avatar',
			[
				'multipart' => [
					[
						'name' => 'files[]',
						'contents' => $file
					]
				]
			]);
		$this->theHTTPStatusCodeShouldBe('200');
	}

	/**
	 * @When logged in user posts temporary avatar from internal path :path
	 *
	 * @param string $path
	 */
	public function loggedInUserPostsTemporaryAvatarFromInternalPath(string $path) {
		$this->sendingAToWithRequesttoken('POST', '/index.php/avatar?path=' . $path);
		$this->theHTTPStatusCodeShouldBe('200');
	}

	/**
	 * @When logged in user crops temporary avatar
	 *
	 * @param TableNode $crop
	 */
	public function loggedInUserCropsTemporaryAvatar(TableNode $crop) {
		$this->loggedInUserCropsTemporaryAvatarWith('200', $crop);
	}

	/**
	 * @When logged in user crops temporary avatar with :statusCode
	 *
	 * @param string $statusCode
	 * @param TableNode $crop
	 */
	public function loggedInUserCropsTemporaryAvatarWith(string $statusCode, TableNode $crop) {
		$parameters = [];
		foreach ($crop->getRowsHash() as $key => $value) {
			$parameters[] = 'crop[' . $key . ']=' . $value;
		}

		$this->sendingAToWithRequesttoken('POST', '/index.php/avatar/cropped?' . implode('&', $parameters));
		$this->theHTTPStatusCodeShouldBe($statusCode);
	}

	/**
	 * @When logged in user deletes the user avatar
	 */
	public function loggedInUserDeletesTheUserAvatar() {
		$this->sendingAToWithRequesttoken('DELETE', '/index.php/avatar');
		$this->theHTTPStatusCodeShouldBe('200');
	}

	/**
	 * @Then last avatar is a square of size :size
	 *
	 * @param string size
	 */
	public function lastAvatarIsASquareOfSize(string $size) {
		[$width, $height] = getimagesizefromstring($this->lastAvatar);

		Assert::assertEquals($width, $height, 'Expected avatar to be a square');
		Assert::assertEquals($size, $width);
	}

	/**
	 * @Then last avatar is not a square
	 */
	public function lastAvatarIsNotASquare() {
		[$width, $height] = getimagesizefromstring($this->lastAvatar);

		Assert::assertNotEquals($width, $height, 'Expected avatar to not be a square');
	}

	/**
	 * @Then last avatar is not a single color
	 */
	public function lastAvatarIsNotASingleColor() {
		Assert::assertEquals(null, $this->getColorFromLastAvatar());
	}

	/**
	 * @Then last avatar is a single :color color
	 *
	 * @param string $color
	 * @param string $size
	 */
	public function lastAvatarIsASingleColor(string $color) {
		$expectedColor = $this->hexStringToRgbColor($color);
		$colorFromLastAvatar = $this->getColorFromLastAvatar();

		Assert::assertTrue($this->isSameColor($expectedColor, $colorFromLastAvatar),
			$this->rgbColorToHexString($colorFromLastAvatar) . ' does not match expected ' . $color);
	}

	private function hexStringToRgbColor($hexString) {
		// Strip initial "#"
		$hexString = substr($hexString, 1);

		$rgbColorInt = hexdec($hexString);

		// RGBA hex strings are not supported; the given string is assumed to be
		// an RGB hex string.
		return [
			'red' => ($rgbColorInt >> 16) & 0xFF,
			'green' => ($rgbColorInt >> 8) & 0xFF,
			'blue' => $rgbColorInt & 0xFF,
			'alpha' => 0
		];
	}

	private function rgbColorToHexString($rgbColor) {
		$rgbColorInt = ($rgbColor['red'] << 16) + ($rgbColor['green'] << 8) + ($rgbColor['blue']);

		return '#' . str_pad(strtoupper(dechex($rgbColorInt)), 6, '0', STR_PAD_LEFT);
	}

	private function getColorFromLastAvatar() {
		$image = imagecreatefromstring($this->lastAvatar);

		$firstPixelColorIndex = imagecolorat($image, 0, 0);
		$firstPixelColor = imagecolorsforindex($image, $firstPixelColorIndex);

		for ($i = 0; $i < imagesx($image); $i++) {
			for ($j = 0; $j < imagesx($image); $j++) {
				$currentPixelColorIndex = imagecolorat($image, $i, $j);
				$currentPixelColor = imagecolorsforindex($image, $currentPixelColorIndex);

				// The colors are compared with a small allowed delta, as even
				// on solid color images the resizing can cause some small
				// artifacts that slightly modify the color of certain pixels.
				if (!$this->isSameColor($firstPixelColor, $currentPixelColor)) {
					imagedestroy($image);

					return null;
				}
			}
		}

		imagedestroy($image);

		return $firstPixelColor;
	}

	private function isSameColor(array $firstColor, array $secondColor, int $allowedDelta = 1) {
		if ($this->isSameColorComponent($firstColor['red'], $secondColor['red'], $allowedDelta) &&
			$this->isSameColorComponent($firstColor['green'], $secondColor['green'], $allowedDelta) &&
			$this->isSameColorComponent($firstColor['blue'], $secondColor['blue'], $allowedDelta) &&
			$this->isSameColorComponent($firstColor['alpha'], $secondColor['alpha'], $allowedDelta)) {
			return true;
		}

		return false;
	}

	private function isSameColorComponent(int $firstColorComponent, int $secondColorComponent, int $allowedDelta) {
		if ($firstColorComponent >= ($secondColorComponent - $allowedDelta) &&
			$firstColorComponent <= ($secondColorComponent + $allowedDelta)) {
			return true;
		}

		return false;
	}
}