1 files changed, 125 insertions, 0 deletions
diff --git a/modules/repofiles/file.go b/modules/repofiles/file.go
new file mode 100644
index 0000000000..913a9ed535
--- /dev/null
+++ b/modules/repofiles/file.go
@@ -0,0 +1,125 @@
+// Copyright 2019 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 repofiles
+
+import (
+	"fmt"
+	"net/url"
+	"strings"
+	"time"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/git"
+	api "code.gitea.io/sdk/gitea"
+)
+
+// GetFileResponseFromCommit Constructs a FileResponse from a Commit object
+func GetFileResponseFromCommit(repo *models.Repository, commit *git.Commit, branch, treeName string) (*api.FileResponse, error) {
+	fileContents, _ := GetFileContents(repo, treeName, branch)   // ok if fails, then will be nil
+	fileCommitResponse, _ := GetFileCommitResponse(repo, commit) // ok if fails, then will be nil
+	verification := GetPayloadCommitVerification(commit)
+	fileResponse := &api.FileResponse{
+		Content:      fileContents,
+		Commit:       fileCommitResponse,
+		Verification: verification,
+	}
+	return fileResponse, nil
+}
+
+// GetFileCommitResponse Constructs a FileCommitResponse from a Commit object
+func GetFileCommitResponse(repo *models.Repository, commit *git.Commit) (*api.FileCommitResponse, error) {
+	if repo == nil {
+		return nil, fmt.Errorf("repo cannot be nil")
+	}
+	if commit == nil {
+		return nil, fmt.Errorf("commit cannot be nil")
+	}
+	commitURL, _ := url.Parse(repo.APIURL() + "/git/commits/" + commit.ID.String())
+	commitTreeURL, _ := url.Parse(repo.APIURL() + "/git/trees/" + commit.Tree.ID.String())
+	parents := make([]*api.CommitMeta, commit.ParentCount())
+	for i := 0; i <= commit.ParentCount(); i++ {
+		if parent, err := commit.Parent(i); err == nil && parent != nil {
+			parentCommitURL, _ := url.Parse(repo.APIURL() + "/git/commits/" + parent.ID.String())
+			parents[i] = &api.CommitMeta{
+				SHA: parent.ID.String(),
+				URL: parentCommitURL.String(),
+			}
+		}
+	}
+	commitHTMLURL, _ := url.Parse(repo.HTMLURL() + "/commit/" + commit.ID.String())
+	fileCommit := &api.FileCommitResponse{
+		CommitMeta: api.CommitMeta{
+			SHA: commit.ID.String(),
+			URL: commitURL.String(),
+		},
+		HTMLURL: commitHTMLURL.String(),
+		Author: &api.CommitUser{
+			Identity: api.Identity{
+				Name:  commit.Author.Name,
+				Email: commit.Author.Email,
+			},
+			Date: commit.Author.When.UTC().Format(time.RFC3339),
+		},
+		Committer: &api.CommitUser{
+			Identity: api.Identity{
+				Name:  commit.Committer.Name,
+				Email: commit.Committer.Email,
+			},
+			Date: commit.Committer.When.UTC().Format(time.RFC3339),
+		},
+		Message: commit.Message(),
+		Tree: &api.CommitMeta{
+			URL: commitTreeURL.String(),
+			SHA: commit.Tree.ID.String(),
+		},
+		Parents: parents,
+	}
+	return fileCommit, nil
+}
+
+// GetAuthorAndCommitterUsers Gets the author and committer user objects from the IdentityOptions
+func GetAuthorAndCommitterUsers(author, committer *IdentityOptions, doer *models.User) (committerUser, authorUser *models.User) {
+	// Committer and author are optional. If they are not the doer (not same email address)
+	// then we use bogus User objects for them to store their FullName and Email.
+	// If only one of the two are provided, we set both of them to it.
+	// If neither are provided, both are the doer.
+	if committer != nil && committer.Email != "" {
+		if doer != nil && strings.ToLower(doer.Email) == strings.ToLower(committer.Email) {
+			committerUser = doer // the committer is the doer, so will use their user object
+			if committer.Name != "" {
+				committerUser.FullName = committer.Name
+			}
+		} else {
+			committerUser = &models.User{
+				FullName: committer.Name,
+				Email:    committer.Email,
+			}
+		}
+	}
+	if author != nil && author.Email != "" {
+		if doer != nil && strings.ToLower(doer.Email) == strings.ToLower(author.Email) {
+			authorUser = doer // the author is the doer, so will use their user object
+			if authorUser.Name != "" {
+				authorUser.FullName = author.Name
+			}
+		} else {
+			authorUser = &models.User{
+				FullName: author.Name,
+				Email:    author.Email,
+			}
+		}
+	}
+	if authorUser == nil {
+		if committerUser != nil {
+			authorUser = committerUser // No valid author was given so use the committer
+		} else if doer != nil {
+			authorUser = doer // No valid author was given and no valid committer so use the doer
+		}
+	}
+	if committerUser == nil {
+		committerUser = authorUser // No valid committer so use the author as the committer (was set to a valid user above)
+	}
+	return authorUser, committerUser
+}