346 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			Go
		
	
	
	
			
		
		
	
	
			346 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			Go
		
	
	
	
// Copyright 2019 The Gitea Authors.
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// All rights reserved.
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// SPDX-License-Identifier: MIT
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package pull
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import (
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	"context"
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	"fmt"
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	"io"
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	"regexp"
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	"strings"
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	"code.gitea.io/gitea/models/db"
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	issues_model "code.gitea.io/gitea/models/issues"
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	repo_model "code.gitea.io/gitea/models/repo"
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	user_model "code.gitea.io/gitea/models/user"
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	"code.gitea.io/gitea/modules/git"
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	"code.gitea.io/gitea/modules/log"
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	"code.gitea.io/gitea/modules/notification"
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	"code.gitea.io/gitea/modules/setting"
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	"code.gitea.io/gitea/modules/util"
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	issue_service "code.gitea.io/gitea/services/issue"
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)
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// CreateCodeComment creates a comment on the code line
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func CreateCodeComment(ctx context.Context, doer *user_model.User, gitRepo *git.Repository, issue *issues_model.Issue, line int64, content, treePath string, isReview bool, replyReviewID int64, latestCommitID string) (*issues_model.Comment, error) {
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	var (
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		existsReview bool
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		err          error
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	)
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	// CreateCodeComment() is used for:
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	// - Single comments
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	// - Comments that are part of a review
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	// - Comments that reply to an existing review
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	if !isReview && replyReviewID != 0 {
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		// It's not part of a review; maybe a reply to a review comment or a single comment.
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		// Check if there are reviews for that line already; if there are, this is a reply
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		if existsReview, err = issues_model.ReviewExists(issue, treePath, line); err != nil {
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			return nil, err
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		}
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	}
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	// Comments that are replies don't require a review header to show up in the issue view
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	if !isReview && existsReview {
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		if err = issue.LoadRepo(ctx); err != nil {
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			return nil, err
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		}
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		comment, err := createCodeComment(ctx,
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			doer,
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			issue.Repo,
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			issue,
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			content,
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			treePath,
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			line,
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			replyReviewID,
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		)
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		if err != nil {
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			return nil, err
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		}
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		mentions, err := issues_model.FindAndUpdateIssueMentions(ctx, issue, doer, comment.Content)
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		if err != nil {
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			return nil, err
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		}
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		notification.NotifyCreateIssueComment(ctx, doer, issue.Repo, issue, comment, mentions)
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		return comment, nil
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	}
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	review, err := issues_model.GetCurrentReview(ctx, doer, issue)
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	if err != nil {
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		if !issues_model.IsErrReviewNotExist(err) {
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			return nil, err
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		}
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		if review, err = issues_model.CreateReview(ctx, issues_model.CreateReviewOptions{
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			Type:     issues_model.ReviewTypePending,
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			Reviewer: doer,
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			Issue:    issue,
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			Official: false,
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			CommitID: latestCommitID,
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		}); err != nil {
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			return nil, err
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		}
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	}
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	comment, err := createCodeComment(ctx,
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		doer,
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		issue.Repo,
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		issue,
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		content,
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		treePath,
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		line,
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		review.ID,
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	)
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	if err != nil {
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		return nil, err
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	}
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	if !isReview && !existsReview {
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		// Submit the review we've just created so the comment shows up in the issue view
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		if _, _, err = SubmitReview(ctx, doer, gitRepo, issue, issues_model.ReviewTypeComment, "", latestCommitID, nil); err != nil {
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			return nil, err
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		}
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	}
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	// NOTICE: if it's a pending review the notifications will not be fired until user submit review.
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	return comment, nil
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}
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var notEnoughLines = regexp.MustCompile(`exit status 128 - fatal: file .* has only \d+ lines?`)
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// createCodeComment creates a plain code comment at the specified line / path
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func createCodeComment(ctx context.Context, doer *user_model.User, repo *repo_model.Repository, issue *issues_model.Issue, content, treePath string, line, reviewID int64) (*issues_model.Comment, error) {
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	var commitID, patch string
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	if err := issue.LoadPullRequest(ctx); err != nil {
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		return nil, fmt.Errorf("LoadPullRequest: %w", err)
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	}
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	pr := issue.PullRequest
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	if err := pr.LoadBaseRepo(ctx); err != nil {
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		return nil, fmt.Errorf("LoadBaseRepo: %w", err)
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	}
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	gitRepo, closer, err := git.RepositoryFromContextOrOpen(ctx, pr.BaseRepo.RepoPath())
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	if err != nil {
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		return nil, fmt.Errorf("RepositoryFromContextOrOpen: %w", err)
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	}
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	defer closer.Close()
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	invalidated := false
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	head := pr.GetGitRefName()
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	if line > 0 {
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		if reviewID != 0 {
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			first, err := issues_model.FindComments(ctx, &issues_model.FindCommentsOptions{
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				ReviewID: reviewID,
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				Line:     line,
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				TreePath: treePath,
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				Type:     issues_model.CommentTypeCode,
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				ListOptions: db.ListOptions{
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					PageSize: 1,
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					Page:     1,
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				},
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			})
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			if err == nil && len(first) > 0 {
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				commitID = first[0].CommitSHA
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				invalidated = first[0].Invalidated
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				patch = first[0].Patch
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			} else if err != nil && !issues_model.IsErrCommentNotExist(err) {
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				return nil, fmt.Errorf("Find first comment for %d line %d path %s. Error: %w", reviewID, line, treePath, err)
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			} else {
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				review, err := issues_model.GetReviewByID(ctx, reviewID)
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				if err == nil && len(review.CommitID) > 0 {
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					head = review.CommitID
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				} else if err != nil && !issues_model.IsErrReviewNotExist(err) {
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					return nil, fmt.Errorf("GetReviewByID %d. Error: %w", reviewID, err)
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				}
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			}
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		}
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		if len(commitID) == 0 {
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			// FIXME validate treePath
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			// Get latest commit referencing the commented line
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			// No need for get commit for base branch changes
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			commit, err := gitRepo.LineBlame(head, gitRepo.Path, treePath, uint(line))
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			if err == nil {
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				commitID = commit.ID.String()
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			} else if !(strings.Contains(err.Error(), "exit status 128 - fatal: no such path") || notEnoughLines.MatchString(err.Error())) {
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				return nil, fmt.Errorf("LineBlame[%s, %s, %s, %d]: %w", pr.GetGitRefName(), gitRepo.Path, treePath, line, err)
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			}
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		}
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	}
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	// Only fetch diff if comment is review comment
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	if len(patch) == 0 && reviewID != 0 {
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		headCommitID, err := gitRepo.GetRefCommitID(pr.GetGitRefName())
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		if err != nil {
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			return nil, fmt.Errorf("GetRefCommitID[%s]: %w", pr.GetGitRefName(), err)
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		}
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		if len(commitID) == 0 {
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			commitID = headCommitID
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		}
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		reader, writer := io.Pipe()
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		defer func() {
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			_ = reader.Close()
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			_ = writer.Close()
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		}()
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		go func() {
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			if err := git.GetRepoRawDiffForFile(gitRepo, pr.MergeBase, headCommitID, git.RawDiffNormal, treePath, writer); err != nil {
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				_ = writer.CloseWithError(fmt.Errorf("GetRawDiffForLine[%s, %s, %s, %s]: %w", gitRepo.Path, pr.MergeBase, headCommitID, treePath, err))
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				return
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			}
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			_ = writer.Close()
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		}()
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		patch, err = git.CutDiffAroundLine(reader, int64((&issues_model.Comment{Line: line}).UnsignedLine()), line < 0, setting.UI.CodeCommentLines)
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		if err != nil {
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			log.Error("Error whilst generating patch: %v", err)
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			return nil, err
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		}
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	}
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	return issue_service.CreateComment(&issues_model.CreateCommentOptions{
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		Type:        issues_model.CommentTypeCode,
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		Doer:        doer,
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		Repo:        repo,
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		Issue:       issue,
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		Content:     content,
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		LineNum:     line,
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		TreePath:    treePath,
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		CommitSHA:   commitID,
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		ReviewID:    reviewID,
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		Patch:       patch,
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		Invalidated: invalidated,
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	})
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}
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// SubmitReview creates a review out of the existing pending review or creates a new one if no pending review exist
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func SubmitReview(ctx context.Context, doer *user_model.User, gitRepo *git.Repository, issue *issues_model.Issue, reviewType issues_model.ReviewType, content, commitID string, attachmentUUIDs []string) (*issues_model.Review, *issues_model.Comment, error) {
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	pr, err := issue.GetPullRequest()
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	if err != nil {
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		return nil, nil, err
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	}
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	var stale bool
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	if reviewType != issues_model.ReviewTypeApprove && reviewType != issues_model.ReviewTypeReject {
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		stale = false
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	} else {
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		headCommitID, err := gitRepo.GetRefCommitID(pr.GetGitRefName())
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		if err != nil {
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			return nil, nil, err
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		}
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		if headCommitID == commitID {
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			stale = false
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		} else {
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			stale, err = checkIfPRContentChanged(ctx, pr, commitID, headCommitID)
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			if err != nil {
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				return nil, nil, err
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			}
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		}
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	}
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	review, comm, err := issues_model.SubmitReview(doer, issue, reviewType, content, commitID, stale, attachmentUUIDs)
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	if err != nil {
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		return nil, nil, err
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	}
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	mentions, err := issues_model.FindAndUpdateIssueMentions(ctx, issue, doer, comm.Content)
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	if err != nil {
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		return nil, nil, err
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	}
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	notification.NotifyPullRequestReview(ctx, pr, review, comm, mentions)
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	for _, lines := range review.CodeComments {
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		for _, comments := range lines {
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			for _, codeComment := range comments {
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				mentions, err := issues_model.FindAndUpdateIssueMentions(ctx, issue, doer, codeComment.Content)
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				if err != nil {
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					return nil, nil, err
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				}
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				notification.NotifyPullRequestCodeComment(ctx, pr, codeComment, mentions)
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			}
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		}
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	}
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	return review, comm, nil
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}
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// DismissReview dismissing stale review by repo admin
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func DismissReview(ctx context.Context, reviewID, repoID int64, message string, doer *user_model.User, isDismiss, dismissPriors bool) (comment *issues_model.Comment, err error) {
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	review, err := issues_model.GetReviewByID(ctx, reviewID)
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	if err != nil {
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		return
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	}
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	if review.Type != issues_model.ReviewTypeApprove && review.Type != issues_model.ReviewTypeReject {
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		return nil, fmt.Errorf("not need to dismiss this review because it's type is not Approve or change request")
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	}
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	// load data for notify
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	if err = review.LoadAttributes(ctx); err != nil {
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		return nil, err
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	}
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	// Check if the review's repoID is the one we're currently expecting.
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	if review.Issue.RepoID != repoID {
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		return nil, fmt.Errorf("reviews's repository is not the same as the one we expect")
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	}
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	if err = issues_model.DismissReview(review, isDismiss); err != nil {
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		return
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	}
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	if dismissPriors {
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		reviews, err := issues_model.GetReviews(ctx, &issues_model.GetReviewOptions{
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			IssueID:    review.IssueID,
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			ReviewerID: review.ReviewerID,
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			Dismissed:  util.OptionalBoolFalse,
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		})
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		if err != nil {
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			return nil, err
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		}
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		for _, oldReview := range reviews {
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			if err = issues_model.DismissReview(oldReview, true); err != nil {
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				return nil, err
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			}
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		}
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	}
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	if !isDismiss {
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		return nil, nil
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	}
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	if err = review.Issue.LoadPullRequest(ctx); err != nil {
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		return
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	}
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	if err = review.Issue.LoadAttributes(ctx); err != nil {
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		return
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	}
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	comment, err = issue_service.CreateComment(&issues_model.CreateCommentOptions{
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		Doer:     doer,
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		Content:  message,
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		Type:     issues_model.CommentTypeDismissReview,
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		ReviewID: review.ID,
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		Issue:    review.Issue,
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		Repo:     review.Issue.Repo,
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	})
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	if err != nil {
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		return
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	}
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	comment.Review = review
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	comment.Poster = doer
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	comment.Issue = review.Issue
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	notification.NotifyPullReviewDismiss(ctx, doer, review, comment)
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	return comment, err
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}
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