1 files changed, 552 insertions, 0 deletions
diff --git a/models/error.go b/models/error.go
new file mode 100644
index 0000000..75c5324
--- /dev/null
+++ b/models/error.go
@@ -0,0 +1,552 @@
+// Copyright 2015 The Gogs Authors. All rights reserved.
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package models
+
+import (
+	"fmt"
+
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/modules/git"
+	"code.gitea.io/gitea/modules/util"
+)
+
+// ErrUserOwnRepos represents a "UserOwnRepos" kind of error.
+type ErrUserOwnRepos struct {
+	UID int64
+}
+
+// IsErrUserOwnRepos checks if an error is a ErrUserOwnRepos.
+func IsErrUserOwnRepos(err error) bool {
+	_, ok := err.(ErrUserOwnRepos)
+	return ok
+}
+
+func (err ErrUserOwnRepos) Error() string {
+	return fmt.Sprintf("user still has ownership of repositories [uid: %d]", err.UID)
+}
+
+// ErrUserHasOrgs represents a "UserHasOrgs" kind of error.
+type ErrUserHasOrgs struct {
+	UID int64
+}
+
+// IsErrUserHasOrgs checks if an error is a ErrUserHasOrgs.
+func IsErrUserHasOrgs(err error) bool {
+	_, ok := err.(ErrUserHasOrgs)
+	return ok
+}
+
+func (err ErrUserHasOrgs) Error() string {
+	return fmt.Sprintf("user still has membership of organizations [uid: %d]", err.UID)
+}
+
+// ErrUserOwnPackages notifies that the user (still) owns the packages.
+type ErrUserOwnPackages struct {
+	UID int64
+}
+
+// IsErrUserOwnPackages checks if an error is an ErrUserOwnPackages.
+func IsErrUserOwnPackages(err error) bool {
+	_, ok := err.(ErrUserOwnPackages)
+	return ok
+}
+
+func (err ErrUserOwnPackages) Error() string {
+	return fmt.Sprintf("user still has ownership of packages [uid: %d]", err.UID)
+}
+
+// ErrDeleteLastAdminUser represents a "DeleteLastAdminUser" kind of error.
+type ErrDeleteLastAdminUser struct {
+	UID int64
+}
+
+// IsErrDeleteLastAdminUser checks if an error is a ErrDeleteLastAdminUser.
+func IsErrDeleteLastAdminUser(err error) bool {
+	_, ok := err.(ErrDeleteLastAdminUser)
+	return ok
+}
+
+func (err ErrDeleteLastAdminUser) Error() string {
+	return fmt.Sprintf("can not delete the last admin user [uid: %d]", err.UID)
+}
+
+// ErrNoPendingRepoTransfer is an error type for repositories without a pending
+// transfer request
+type ErrNoPendingRepoTransfer struct {
+	RepoID int64
+}
+
+func (err ErrNoPendingRepoTransfer) Error() string {
+	return fmt.Sprintf("repository doesn't have a pending transfer [repo_id: %d]", err.RepoID)
+}
+
+// IsErrNoPendingTransfer is an error type when a repository has no pending
+// transfers
+func IsErrNoPendingTransfer(err error) bool {
+	_, ok := err.(ErrNoPendingRepoTransfer)
+	return ok
+}
+
+func (err ErrNoPendingRepoTransfer) Unwrap() error {
+	return util.ErrNotExist
+}
+
+// ErrRepoTransferInProgress represents the state of a repository that has an
+// ongoing transfer
+type ErrRepoTransferInProgress struct {
+	Uname string
+	Name  string
+}
+
+// IsErrRepoTransferInProgress checks if an error is a ErrRepoTransferInProgress.
+func IsErrRepoTransferInProgress(err error) bool {
+	_, ok := err.(ErrRepoTransferInProgress)
+	return ok
+}
+
+func (err ErrRepoTransferInProgress) Error() string {
+	return fmt.Sprintf("repository is already being transferred [uname: %s, name: %s]", err.Uname, err.Name)
+}
+
+func (err ErrRepoTransferInProgress) Unwrap() error {
+	return util.ErrAlreadyExist
+}
+
+// ErrInvalidCloneAddr represents a "InvalidCloneAddr" kind of error.
+type ErrInvalidCloneAddr struct {
+	Host               string
+	IsURLError         bool
+	IsInvalidPath      bool
+	IsProtocolInvalid  bool
+	IsPermissionDenied bool
+	LocalPath          bool
+}
+
+// IsErrInvalidCloneAddr checks if an error is a ErrInvalidCloneAddr.
+func IsErrInvalidCloneAddr(err error) bool {
+	_, ok := err.(*ErrInvalidCloneAddr)
+	return ok
+}
+
+func (err *ErrInvalidCloneAddr) Error() string {
+	if err.IsInvalidPath {
+		return fmt.Sprintf("migration/cloning from '%s' is not allowed: the provided path is invalid", err.Host)
+	}
+	if err.IsProtocolInvalid {
+		return fmt.Sprintf("migration/cloning from '%s' is not allowed: the provided url protocol is not allowed", err.Host)
+	}
+	if err.IsPermissionDenied {
+		return fmt.Sprintf("migration/cloning from '%s' is not allowed.", err.Host)
+	}
+	if err.IsURLError {
+		return fmt.Sprintf("migration/cloning from '%s' is not allowed: the provided url is invalid", err.Host)
+	}
+
+	return fmt.Sprintf("migration/cloning from '%s' is not allowed", err.Host)
+}
+
+func (err *ErrInvalidCloneAddr) Unwrap() error {
+	return util.ErrInvalidArgument
+}
+
+// ErrUpdateTaskNotExist represents a "UpdateTaskNotExist" kind of error.
+type ErrUpdateTaskNotExist struct {
+	UUID string
+}
+
+// IsErrUpdateTaskNotExist checks if an error is a ErrUpdateTaskNotExist.
+func IsErrUpdateTaskNotExist(err error) bool {
+	_, ok := err.(ErrUpdateTaskNotExist)
+	return ok
+}
+
+func (err ErrUpdateTaskNotExist) Error() string {
+	return fmt.Sprintf("update task does not exist [uuid: %s]", err.UUID)
+}
+
+func (err ErrUpdateTaskNotExist) Unwrap() error {
+	return util.ErrNotExist
+}
+
+// ErrInvalidTagName represents a "InvalidTagName" kind of error.
+type ErrInvalidTagName struct {
+	TagName string
+}
+
+// IsErrInvalidTagName checks if an error is a ErrInvalidTagName.
+func IsErrInvalidTagName(err error) bool {
+	_, ok := err.(ErrInvalidTagName)
+	return ok
+}
+
+func (err ErrInvalidTagName) Error() string {
+	return fmt.Sprintf("release tag name is not valid [tag_name: %s]", err.TagName)
+}
+
+func (err ErrInvalidTagName) Unwrap() error {
+	return util.ErrInvalidArgument
+}
+
+// ErrProtectedTagName represents a "ProtectedTagName" kind of error.
+type ErrProtectedTagName struct {
+	TagName string
+}
+
+// IsErrProtectedTagName checks if an error is a ErrProtectedTagName.
+func IsErrProtectedTagName(err error) bool {
+	_, ok := err.(ErrProtectedTagName)
+	return ok
+}
+
+func (err ErrProtectedTagName) Error() string {
+	return fmt.Sprintf("release tag name is protected [tag_name: %s]", err.TagName)
+}
+
+func (err ErrProtectedTagName) Unwrap() error {
+	return util.ErrPermissionDenied
+}
+
+// ErrRepoFileAlreadyExists represents a "RepoFileAlreadyExist" kind of error.
+type ErrRepoFileAlreadyExists struct {
+	Path string
+}
+
+// IsErrRepoFileAlreadyExists checks if an error is a ErrRepoFileAlreadyExists.
+func IsErrRepoFileAlreadyExists(err error) bool {
+	_, ok := err.(ErrRepoFileAlreadyExists)
+	return ok
+}
+
+func (err ErrRepoFileAlreadyExists) Error() string {
+	return fmt.Sprintf("repository file already exists [path: %s]", err.Path)
+}
+
+func (err ErrRepoFileAlreadyExists) Unwrap() error {
+	return util.ErrAlreadyExist
+}
+
+// ErrRepoFileDoesNotExist represents a "RepoFileDoesNotExist" kind of error.
+type ErrRepoFileDoesNotExist struct {
+	Path string
+	Name string
+}
+
+// IsErrRepoFileDoesNotExist checks if an error is a ErrRepoDoesNotExist.
+func IsErrRepoFileDoesNotExist(err error) bool {
+	_, ok := err.(ErrRepoFileDoesNotExist)
+	return ok
+}
+
+func (err ErrRepoFileDoesNotExist) Error() string {
+	return fmt.Sprintf("repository file does not exist [path: %s]", err.Path)
+}
+
+func (err ErrRepoFileDoesNotExist) Unwrap() error {
+	return util.ErrNotExist
+}
+
+// ErrFilenameInvalid represents a "FilenameInvalid" kind of error.
+type ErrFilenameInvalid struct {
+	Path string
+}
+
+// IsErrFilenameInvalid checks if an error is an ErrFilenameInvalid.
+func IsErrFilenameInvalid(err error) bool {
+	_, ok := err.(ErrFilenameInvalid)
+	return ok
+}
+
+func (err ErrFilenameInvalid) Error() string {
+	return fmt.Sprintf("path contains a malformed path component [path: %s]", err.Path)
+}
+
+func (err ErrFilenameInvalid) Unwrap() error {
+	return util.ErrInvalidArgument
+}
+
+// ErrUserCannotCommit represents "UserCannotCommit" kind of error.
+type ErrUserCannotCommit struct {
+	UserName string
+}
+
+// IsErrUserCannotCommit checks if an error is an ErrUserCannotCommit.
+func IsErrUserCannotCommit(err error) bool {
+	_, ok := err.(ErrUserCannotCommit)
+	return ok
+}
+
+func (err ErrUserCannotCommit) Error() string {
+	return fmt.Sprintf("user cannot commit to repo [user: %s]", err.UserName)
+}
+
+func (err ErrUserCannotCommit) Unwrap() error {
+	return util.ErrPermissionDenied
+}
+
+// ErrFilePathInvalid represents a "FilePathInvalid" kind of error.
+type ErrFilePathInvalid struct {
+	Message string
+	Path    string
+	Name    string
+	Type    git.EntryMode
+}
+
+// IsErrFilePathInvalid checks if an error is an ErrFilePathInvalid.
+func IsErrFilePathInvalid(err error) bool {
+	_, ok := err.(ErrFilePathInvalid)
+	return ok
+}
+
+func (err ErrFilePathInvalid) Error() string {
+	if err.Message != "" {
+		return err.Message
+	}
+	return fmt.Sprintf("path is invalid [path: %s]", err.Path)
+}
+
+func (err ErrFilePathInvalid) Unwrap() error {
+	return util.ErrInvalidArgument
+}
+
+// ErrFilePathProtected represents a "FilePathProtected" kind of error.
+type ErrFilePathProtected struct {
+	Message string
+	Path    string
+}
+
+// IsErrFilePathProtected checks if an error is an ErrFilePathProtected.
+func IsErrFilePathProtected(err error) bool {
+	_, ok := err.(ErrFilePathProtected)
+	return ok
+}
+
+func (err ErrFilePathProtected) Error() string {
+	if err.Message != "" {
+		return err.Message
+	}
+	return fmt.Sprintf("path is protected and can not be changed [path: %s]", err.Path)
+}
+
+func (err ErrFilePathProtected) Unwrap() error {
+	return util.ErrPermissionDenied
+}
+
+// ErrDisallowedToMerge represents an error that a branch is protected and the current user is not allowed to modify it.
+type ErrDisallowedToMerge struct {
+	Reason string
+}
+
+// IsErrDisallowedToMerge checks if an error is an ErrDisallowedToMerge.
+func IsErrDisallowedToMerge(err error) bool {
+	_, ok := err.(ErrDisallowedToMerge)
+	return ok
+}
+
+func (err ErrDisallowedToMerge) Error() string {
+	return fmt.Sprintf("not allowed to merge [reason: %s]", err.Reason)
+}
+
+func (err ErrDisallowedToMerge) Unwrap() error {
+	return util.ErrPermissionDenied
+}
+
+// ErrTagAlreadyExists represents an error that tag with such name already exists.
+type ErrTagAlreadyExists struct {
+	TagName string
+}
+
+// IsErrTagAlreadyExists checks if an error is an ErrTagAlreadyExists.
+func IsErrTagAlreadyExists(err error) bool {
+	_, ok := err.(ErrTagAlreadyExists)
+	return ok
+}
+
+func (err ErrTagAlreadyExists) Error() string {
+	return fmt.Sprintf("tag already exists [name: %s]", err.TagName)
+}
+
+func (err ErrTagAlreadyExists) Unwrap() error {
+	return util.ErrAlreadyExist
+}
+
+// ErrSHADoesNotMatch represents a "SHADoesNotMatch" kind of error.
+type ErrSHADoesNotMatch struct {
+	Path       string
+	GivenSHA   string
+	CurrentSHA string
+}
+
+// IsErrSHADoesNotMatch checks if an error is a ErrSHADoesNotMatch.
+func IsErrSHADoesNotMatch(err error) bool {
+	_, ok := err.(ErrSHADoesNotMatch)
+	return ok
+}
+
+func (err ErrSHADoesNotMatch) Error() string {
+	return fmt.Sprintf("sha does not match [given: %s, expected: %s]", err.GivenSHA, err.CurrentSHA)
+}
+
+// ErrSHANotFound represents a "SHADoesNotMatch" kind of error.
+type ErrSHANotFound struct {
+	SHA string
+}
+
+// IsErrSHANotFound checks if an error is a ErrSHANotFound.
+func IsErrSHANotFound(err error) bool {
+	_, ok := err.(ErrSHANotFound)
+	return ok
+}
+
+func (err ErrSHANotFound) Error() string {
+	return fmt.Sprintf("sha not found [%s]", err.SHA)
+}
+
+func (err ErrSHANotFound) Unwrap() error {
+	return util.ErrNotExist
+}
+
+// ErrCommitIDDoesNotMatch represents a "CommitIDDoesNotMatch" kind of error.
+type ErrCommitIDDoesNotMatch struct {
+	GivenCommitID   string
+	CurrentCommitID string
+}
+
+// IsErrCommitIDDoesNotMatch checks if an error is a ErrCommitIDDoesNotMatch.
+func IsErrCommitIDDoesNotMatch(err error) bool {
+	_, ok := err.(ErrCommitIDDoesNotMatch)
+	return ok
+}
+
+func (err ErrCommitIDDoesNotMatch) Error() string {
+	return fmt.Sprintf("file CommitID does not match [given: %s, expected: %s]", err.GivenCommitID, err.CurrentCommitID)
+}
+
+// ErrSHAOrCommitIDNotProvided represents a "SHAOrCommitIDNotProvided" kind of error.
+type ErrSHAOrCommitIDNotProvided struct{}
+
+// IsErrSHAOrCommitIDNotProvided checks if an error is a ErrSHAOrCommitIDNotProvided.
+func IsErrSHAOrCommitIDNotProvided(err error) bool {
+	_, ok := err.(ErrSHAOrCommitIDNotProvided)
+	return ok
+}
+
+func (err ErrSHAOrCommitIDNotProvided) Error() string {
+	return "a SHA or commit ID must be proved when updating a file"
+}
+
+// ErrInvalidMergeStyle represents an error if merging with disabled merge strategy
+type ErrInvalidMergeStyle struct {
+	ID    int64
+	Style repo_model.MergeStyle
+}
+
+// IsErrInvalidMergeStyle checks if an error is a ErrInvalidMergeStyle.
+func IsErrInvalidMergeStyle(err error) bool {
+	_, ok := err.(ErrInvalidMergeStyle)
+	return ok
+}
+
+func (err ErrInvalidMergeStyle) Error() string {
+	return fmt.Sprintf("merge strategy is not allowed or is invalid [repo_id: %d, strategy: %s]",
+		err.ID, err.Style)
+}
+
+func (err ErrInvalidMergeStyle) Unwrap() error {
+	return util.ErrInvalidArgument
+}
+
+// ErrMergeConflicts represents an error if merging fails with a conflict
+type ErrMergeConflicts struct {
+	Style  repo_model.MergeStyle
+	StdOut string
+	StdErr string
+	Err    error
+}
+
+// IsErrMergeConflicts checks if an error is a ErrMergeConflicts.
+func IsErrMergeConflicts(err error) bool {
+	_, ok := err.(ErrMergeConflicts)
+	return ok
+}
+
+func (err ErrMergeConflicts) Error() string {
+	return fmt.Sprintf("Merge Conflict Error: %v: %s\n%s", err.Err, err.StdErr, err.StdOut)
+}
+
+// ErrMergeUnrelatedHistories represents an error if merging fails due to unrelated histories
+type ErrMergeUnrelatedHistories struct {
+	Style  repo_model.MergeStyle
+	StdOut string
+	StdErr string
+	Err    error
+}
+
+// IsErrMergeUnrelatedHistories checks if an error is a ErrMergeUnrelatedHistories.
+func IsErrMergeUnrelatedHistories(err error) bool {
+	_, ok := err.(ErrMergeUnrelatedHistories)
+	return ok
+}
+
+func (err ErrMergeUnrelatedHistories) Error() string {
+	return fmt.Sprintf("Merge UnrelatedHistories Error: %v: %s\n%s", err.Err, err.StdErr, err.StdOut)
+}
+
+// ErrMergeDivergingFastForwardOnly represents an error if a fast-forward-only merge fails because the branches diverge
+type ErrMergeDivergingFastForwardOnly struct {
+	StdOut string
+	StdErr string
+	Err    error
+}
+
+// IsErrMergeDivergingFastForwardOnly checks if an error is a ErrMergeDivergingFastForwardOnly.
+func IsErrMergeDivergingFastForwardOnly(err error) bool {
+	_, ok := err.(ErrMergeDivergingFastForwardOnly)
+	return ok
+}
+
+func (err ErrMergeDivergingFastForwardOnly) Error() string {
+	return fmt.Sprintf("Merge DivergingFastForwardOnly Error: %v: %s\n%s", err.Err, err.StdErr, err.StdOut)
+}
+
+// ErrRebaseConflicts represents an error if rebase fails with a conflict
+type ErrRebaseConflicts struct {
+	Style     repo_model.MergeStyle
+	CommitSHA string
+	StdOut    string
+	StdErr    string
+	Err       error
+}
+
+// IsErrRebaseConflicts checks if an error is a ErrRebaseConflicts.
+func IsErrRebaseConflicts(err error) bool {
+	_, ok := err.(ErrRebaseConflicts)
+	return ok
+}
+
+func (err ErrRebaseConflicts) Error() string {
+	return fmt.Sprintf("Rebase Error: %v: Whilst Rebasing: %s\n%s\n%s", err.Err, err.CommitSHA, err.StdErr, err.StdOut)
+}
+
+// ErrPullRequestHasMerged represents a "PullRequestHasMerged"-error
+type ErrPullRequestHasMerged struct {
+	ID         int64
+	IssueID    int64
+	HeadRepoID int64
+	BaseRepoID int64
+	HeadBranch string
+	BaseBranch string
+}
+
+// IsErrPullRequestHasMerged checks if an error is a ErrPullRequestHasMerged.
+func IsErrPullRequestHasMerged(err error) bool {
+	_, ok := err.(ErrPullRequestHasMerged)
+	return ok
+}
+
+// Error does pretty-printing :D
+func (err ErrPullRequestHasMerged) Error() string {
+	return fmt.Sprintf("pull request has merged [id: %d, issue_id: %d, head_repo_id: %d, base_repo_id: %d, head_branch: %s, base_branch: %s]",
+		err.ID, err.IssueID, err.HeadRepoID, err.BaseRepoID, err.HeadBranch, err.BaseBranch)
+}