Move convert package to services (#22264)

Addition to #22256

The `convert` package relies heavily on different models which is
[disallowed by our definition of
modules](https://github.com/go-gitea/gitea/blob/main/CONTRIBUTING.md#design-guideline).
This helps to prevent possible import cycles.

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

services/convert/convert.go

@@ -0,0 +1,458 @@
+// Copyright 2015 The Gogs Authors. All rights reserved.
+// Copyright 2018 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package convert
+
+import (
+	"context"
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+
+	asymkey_model "code.gitea.io/gitea/models/asymkey"
+	"code.gitea.io/gitea/models/auth"
+	"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"
+	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/git"
+	"code.gitea.io/gitea/modules/log"
+	api "code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/services/gitdiff"
+	webhook_service "code.gitea.io/gitea/services/webhook"
+)
+
+// ToEmail convert models.EmailAddress to api.Email
+func ToEmail(email *user_model.EmailAddress) *api.Email {
+	return &api.Email{
+		Email:    email.Email,
+		Verified: email.IsActivated,
+		Primary:  email.IsPrimary,
+	}
+}
+
+// ToBranch convert a git.Commit and git.Branch to an api.Branch
+func ToBranch(repo *repo_model.Repository, b *git.Branch, c *git.Commit, bp *git_model.ProtectedBranch, user *user_model.User, isRepoAdmin bool) (*api.Branch, error) {
+	if bp == nil {
+		var hasPerm bool
+		var canPush bool
+		var err error
+		if user != nil {
+			hasPerm, err = access_model.HasAccessUnit(db.DefaultContext, user, repo, unit.TypeCode, perm.AccessModeWrite)
+			if err != nil {
+				return nil, err
+			}
+
+			perms, err := access_model.GetUserRepoPermission(db.DefaultContext, repo, user)
+			if err != nil {
+				return nil, err
+			}
+			canPush = issues_model.CanMaintainerWriteToBranch(perms, b.Name, user)
+		}
+
+		return &api.Branch{
+			Name:                b.Name,
+			Commit:              ToPayloadCommit(repo, c),
+			Protected:           false,
+			RequiredApprovals:   0,
+			EnableStatusCheck:   false,
+			StatusCheckContexts: []string{},
+			UserCanPush:         canPush,
+			UserCanMerge:        hasPerm,
+		}, nil
+	}
+
+	branch := &api.Branch{
+		Name:                b.Name,
+		Commit:              ToPayloadCommit(repo, c),
+		Protected:           true,
+		RequiredApprovals:   bp.RequiredApprovals,
+		EnableStatusCheck:   bp.EnableStatusCheck,
+		StatusCheckContexts: bp.StatusCheckContexts,
+	}
+
+	if isRepoAdmin {
+		branch.EffectiveBranchProtectionName = bp.BranchName
+	}
+
+	if user != nil {
+		permission, err := access_model.GetUserRepoPermission(db.DefaultContext, repo, user)
+		if err != nil {
+			return nil, err
+		}
+		branch.UserCanPush = bp.CanUserPush(user.ID)
+		branch.UserCanMerge = git_model.IsUserMergeWhitelisted(db.DefaultContext, bp, user.ID, permission)
+	}
+
+	return branch, nil
+}
+
+// ToBranchProtection convert a ProtectedBranch to api.BranchProtection
+func ToBranchProtection(bp *git_model.ProtectedBranch) *api.BranchProtection {
+	pushWhitelistUsernames, err := user_model.GetUserNamesByIDs(bp.WhitelistUserIDs)
+	if err != nil {
+		log.Error("GetUserNamesByIDs (WhitelistUserIDs): %v", err)
+	}
+	mergeWhitelistUsernames, err := user_model.GetUserNamesByIDs(bp.MergeWhitelistUserIDs)
+	if err != nil {
+		log.Error("GetUserNamesByIDs (MergeWhitelistUserIDs): %v", err)
+	}
+	approvalsWhitelistUsernames, err := user_model.GetUserNamesByIDs(bp.ApprovalsWhitelistUserIDs)
+	if err != nil {
+		log.Error("GetUserNamesByIDs (ApprovalsWhitelistUserIDs): %v", err)
+	}
+	pushWhitelistTeams, err := organization.GetTeamNamesByID(bp.WhitelistTeamIDs)
+	if err != nil {
+		log.Error("GetTeamNamesByID (WhitelistTeamIDs): %v", err)
+	}
+	mergeWhitelistTeams, err := organization.GetTeamNamesByID(bp.MergeWhitelistTeamIDs)
+	if err != nil {
+		log.Error("GetTeamNamesByID (MergeWhitelistTeamIDs): %v", err)
+	}
+	approvalsWhitelistTeams, err := organization.GetTeamNamesByID(bp.ApprovalsWhitelistTeamIDs)
+	if err != nil {
+		log.Error("GetTeamNamesByID (ApprovalsWhitelistTeamIDs): %v", err)
+	}
+
+	return &api.BranchProtection{
+		BranchName:                    bp.BranchName,
+		EnablePush:                    bp.CanPush,
+		EnablePushWhitelist:           bp.EnableWhitelist,
+		PushWhitelistUsernames:        pushWhitelistUsernames,
+		PushWhitelistTeams:            pushWhitelistTeams,
+		PushWhitelistDeployKeys:       bp.WhitelistDeployKeys,
+		EnableMergeWhitelist:          bp.EnableMergeWhitelist,
+		MergeWhitelistUsernames:       mergeWhitelistUsernames,
+		MergeWhitelistTeams:           mergeWhitelistTeams,
+		EnableStatusCheck:             bp.EnableStatusCheck,
+		StatusCheckContexts:           bp.StatusCheckContexts,
+		RequiredApprovals:             bp.RequiredApprovals,
+		EnableApprovalsWhitelist:      bp.EnableApprovalsWhitelist,
+		ApprovalsWhitelistUsernames:   approvalsWhitelistUsernames,
+		ApprovalsWhitelistTeams:       approvalsWhitelistTeams,
+		BlockOnRejectedReviews:        bp.BlockOnRejectedReviews,
+		BlockOnOfficialReviewRequests: bp.BlockOnOfficialReviewRequests,
+		BlockOnOutdatedBranch:         bp.BlockOnOutdatedBranch,
+		DismissStaleApprovals:         bp.DismissStaleApprovals,
+		RequireSignedCommits:          bp.RequireSignedCommits,
+		ProtectedFilePatterns:         bp.ProtectedFilePatterns,
+		UnprotectedFilePatterns:       bp.UnprotectedFilePatterns,
+		Created:                       bp.CreatedUnix.AsTime(),
+		Updated:                       bp.UpdatedUnix.AsTime(),
+	}
+}
+
+// ToTag convert a git.Tag to an api.Tag
+func ToTag(repo *repo_model.Repository, t *git.Tag) *api.Tag {
+	return &api.Tag{
+		Name:       t.Name,
+		Message:    strings.TrimSpace(t.Message),
+		ID:         t.ID.String(),
+		Commit:     ToCommitMeta(repo, t),
+		ZipballURL: util.URLJoin(repo.HTMLURL(), "archive", t.Name+".zip"),
+		TarballURL: util.URLJoin(repo.HTMLURL(), "archive", t.Name+".tar.gz"),
+	}
+}
+
+// ToVerification convert a git.Commit.Signature to an api.PayloadCommitVerification
+func ToVerification(c *git.Commit) *api.PayloadCommitVerification {
+	verif := asymkey_model.ParseCommitWithSignature(c)
+	commitVerification := &api.PayloadCommitVerification{
+		Verified: verif.Verified,
+		Reason:   verif.Reason,
+	}
+	if c.Signature != nil {
+		commitVerification.Signature = c.Signature.Signature
+		commitVerification.Payload = c.Signature.Payload
+	}
+	if verif.SigningUser != nil {
+		commitVerification.Signer = &api.PayloadUser{
+			Name:  verif.SigningUser.Name,
+			Email: verif.SigningUser.Email,
+		}
+	}
+	return commitVerification
+}
+
+// ToPublicKey convert asymkey_model.PublicKey to api.PublicKey
+func ToPublicKey(apiLink string, key *asymkey_model.PublicKey) *api.PublicKey {
+	return &api.PublicKey{
+		ID:          key.ID,
+		Key:         key.Content,
+		URL:         fmt.Sprintf("%s%d", apiLink, key.ID),
+		Title:       key.Name,
+		Fingerprint: key.Fingerprint,
+		Created:     key.CreatedUnix.AsTime(),
+	}
+}
+
+// ToGPGKey converts models.GPGKey to api.GPGKey
+func ToGPGKey(key *asymkey_model.GPGKey) *api.GPGKey {
+	subkeys := make([]*api.GPGKey, len(key.SubsKey))
+	for id, k := range key.SubsKey {
+		subkeys[id] = &api.GPGKey{
+			ID:                k.ID,
+			PrimaryKeyID:      k.PrimaryKeyID,
+			KeyID:             k.KeyID,
+			PublicKey:         k.Content,
+			Created:           k.CreatedUnix.AsTime(),
+			Expires:           k.ExpiredUnix.AsTime(),
+			CanSign:           k.CanSign,
+			CanEncryptComms:   k.CanEncryptComms,
+			CanEncryptStorage: k.CanEncryptStorage,
+			CanCertify:        k.CanSign,
+			Verified:          k.Verified,
+		}
+	}
+	emails := make([]*api.GPGKeyEmail, len(key.Emails))
+	for i, e := range key.Emails {
+		emails[i] = ToGPGKeyEmail(e)
+	}
+	return &api.GPGKey{
+		ID:                key.ID,
+		PrimaryKeyID:      key.PrimaryKeyID,
+		KeyID:             key.KeyID,
+		PublicKey:         key.Content,
+		Created:           key.CreatedUnix.AsTime(),
+		Expires:           key.ExpiredUnix.AsTime(),
+		Emails:            emails,
+		SubsKey:           subkeys,
+		CanSign:           key.CanSign,
+		CanEncryptComms:   key.CanEncryptComms,
+		CanEncryptStorage: key.CanEncryptStorage,
+		CanCertify:        key.CanSign,
+		Verified:          key.Verified,
+	}
+}
+
+// ToGPGKeyEmail convert models.EmailAddress to api.GPGKeyEmail
+func ToGPGKeyEmail(email *user_model.EmailAddress) *api.GPGKeyEmail {
+	return &api.GPGKeyEmail{
+		Email:    email.Email,
+		Verified: email.IsActivated,
+	}
+}
+
+// ToHook convert models.Webhook to api.Hook
+func ToHook(repoLink string, w *webhook.Webhook) (*api.Hook, error) {
+	config := map[string]string{
+		"url":          w.URL,
+		"content_type": w.ContentType.Name(),
+	}
+	if w.Type == webhook.SLACK {
+		s := webhook_service.GetSlackHook(w)
+		config["channel"] = s.Channel
+		config["username"] = s.Username
+		config["icon_url"] = s.IconURL
+		config["color"] = s.Color
+	}
+
+	authorizationHeader, err := w.HeaderAuthorization()
+	if err != nil {
+		return nil, err
+	}
+
+	return &api.Hook{
+		ID:                  w.ID,
+		Type:                w.Type,
+		URL:                 fmt.Sprintf("%s/settings/hooks/%d", repoLink, w.ID),
+		Active:              w.IsActive,
+		Config:              config,
+		Events:              w.EventsArray(),
+		AuthorizationHeader: authorizationHeader,
+		Updated:             w.UpdatedUnix.AsTime(),
+		Created:             w.CreatedUnix.AsTime(),
+	}, nil
+}
+
+// ToGitHook convert git.Hook to api.GitHook
+func ToGitHook(h *git.Hook) *api.GitHook {
+	return &api.GitHook{
+		Name:     h.Name(),
+		IsActive: h.IsActive,
+		Content:  h.Content,
+	}
+}
+
+// ToDeployKey convert asymkey_model.DeployKey to api.DeployKey
+func ToDeployKey(apiLink string, key *asymkey_model.DeployKey) *api.DeployKey {
+	return &api.DeployKey{
+		ID:          key.ID,
+		KeyID:       key.KeyID,
+		Key:         key.Content,
+		Fingerprint: key.Fingerprint,
+		URL:         fmt.Sprintf("%s%d", apiLink, key.ID),
+		Title:       key.Name,
+		Created:     key.CreatedUnix.AsTime(),
+		ReadOnly:    key.Mode == perm.AccessModeRead, // All deploy keys are read-only.
+	}
+}
+
+// ToOrganization convert user_model.User to api.Organization
+func ToOrganization(org *organization.Organization) *api.Organization {
+	return &api.Organization{
+		ID:                        org.ID,
+		AvatarURL:                 org.AsUser().AvatarLink(),
+		Name:                      org.Name,
+		UserName:                  org.Name,
+		FullName:                  org.FullName,
+		Description:               org.Description,
+		Website:                   org.Website,
+		Location:                  org.Location,
+		Visibility:                org.Visibility.String(),
+		RepoAdminChangeTeamAccess: org.RepoAdminChangeTeamAccess,
+	}
+}
+
+// ToTeam convert models.Team to api.Team
+func ToTeam(team *organization.Team, loadOrg ...bool) (*api.Team, error) {
+	teams, err := ToTeams([]*organization.Team{team}, len(loadOrg) != 0 && loadOrg[0])
+	if err != nil || len(teams) == 0 {
+		return nil, err
+	}
+	return teams[0], nil
+}
+
+// ToTeams convert models.Team list to api.Team list
+func ToTeams(teams []*organization.Team, loadOrgs bool) ([]*api.Team, error) {
+	if len(teams) == 0 || teams[0] == nil {
+		return nil, nil
+	}
+
+	cache := make(map[int64]*api.Organization)
+	apiTeams := make([]*api.Team, len(teams))
+	for i := range teams {
+		if err := teams[i].GetUnits(); err != nil {
+			return nil, err
+		}
+
+		apiTeams[i] = &api.Team{
+			ID:                      teams[i].ID,
+			Name:                    teams[i].Name,
+			Description:             teams[i].Description,
+			IncludesAllRepositories: teams[i].IncludesAllRepositories,
+			CanCreateOrgRepo:        teams[i].CanCreateOrgRepo,
+			Permission:              teams[i].AccessMode.String(),
+			Units:                   teams[i].GetUnitNames(),
+			UnitsMap:                teams[i].GetUnitsMap(),
+		}
+
+		if loadOrgs {
+			apiOrg, ok := cache[teams[i].OrgID]
+			if !ok {
+				org, err := organization.GetOrgByID(db.DefaultContext, teams[i].OrgID)
+				if err != nil {
+					return nil, err
+				}
+				apiOrg = ToOrganization(org)
+				cache[teams[i].OrgID] = apiOrg
+			}
+			apiTeams[i].Organization = apiOrg
+		}
+	}
+	return apiTeams, nil
+}
+
+// ToAnnotatedTag convert git.Tag to api.AnnotatedTag
+func ToAnnotatedTag(repo *repo_model.Repository, t *git.Tag, c *git.Commit) *api.AnnotatedTag {
+	return &api.AnnotatedTag{
+		Tag:          t.Name,
+		SHA:          t.ID.String(),
+		Object:       ToAnnotatedTagObject(repo, c),
+		Message:      t.Message,
+		URL:          util.URLJoin(repo.APIURL(), "git/tags", t.ID.String()),
+		Tagger:       ToCommitUser(t.Tagger),
+		Verification: ToVerification(c),
+	}
+}
+
+// ToAnnotatedTagObject convert a git.Commit to an api.AnnotatedTagObject
+func ToAnnotatedTagObject(repo *repo_model.Repository, commit *git.Commit) *api.AnnotatedTagObject {
+	return &api.AnnotatedTagObject{
+		SHA:  commit.ID.String(),
+		Type: string(git.ObjectCommit),
+		URL:  util.URLJoin(repo.APIURL(), "git/commits", commit.ID.String()),
+	}
+}
+
+// ToTopicResponse convert from models.Topic to api.TopicResponse
+func ToTopicResponse(topic *repo_model.Topic) *api.TopicResponse {
+	return &api.TopicResponse{
+		ID:        topic.ID,
+		Name:      topic.Name,
+		RepoCount: topic.RepoCount,
+		Created:   topic.CreatedUnix.AsTime(),
+		Updated:   topic.UpdatedUnix.AsTime(),
+	}
+}
+
+// ToOAuth2Application convert from auth.OAuth2Application to api.OAuth2Application
+func ToOAuth2Application(app *auth.OAuth2Application) *api.OAuth2Application {
+	return &api.OAuth2Application{
+		ID:                 app.ID,
+		Name:               app.Name,
+		ClientID:           app.ClientID,
+		ClientSecret:       app.ClientSecret,
+		ConfidentialClient: app.ConfidentialClient,
+		RedirectURIs:       app.RedirectURIs,
+		Created:            app.CreatedUnix.AsTime(),
+	}
+}
+
+// ToLFSLock convert a LFSLock to api.LFSLock
+func ToLFSLock(ctx context.Context, l *git_model.LFSLock) *api.LFSLock {
+	u, err := user_model.GetUserByID(ctx, l.OwnerID)
+	if err != nil {
+		return nil
+	}
+	return &api.LFSLock{
+		ID:       strconv.FormatInt(l.ID, 10),
+		Path:     l.Path,
+		LockedAt: l.Created.Round(time.Second),
+		Owner: &api.LFSLockOwner{
+			Name: u.Name,
+		},
+	}
+}
+
+// ToChangedFile convert a gitdiff.DiffFile to api.ChangedFile
+func ToChangedFile(f *gitdiff.DiffFile, repo *repo_model.Repository, commit string) *api.ChangedFile {
+	status := "changed"
+	if f.IsDeleted {
+		status = "deleted"
+	} else if f.IsCreated {
+		status = "added"
+	} else if f.IsRenamed && f.Type == gitdiff.DiffFileCopy {
+		status = "copied"
+	} else if f.IsRenamed && f.Type == gitdiff.DiffFileRename {
+		status = "renamed"
+	} else if f.Addition == 0 && f.Deletion == 0 {
+		status = "unchanged"
+	}
+
+	file := &api.ChangedFile{
+		Filename:    f.GetDiffFileName(),
+		Status:      status,
+		Additions:   f.Addition,
+		Deletions:   f.Deletion,
+		Changes:     f.Addition + f.Deletion,
+		HTMLURL:     fmt.Sprint(repo.HTMLURL(), "/src/commit/", commit, "/", util.PathEscapeSegments(f.GetDiffFileName())),
+		ContentsURL: fmt.Sprint(repo.APIURL(), "/contents/", util.PathEscapeSegments(f.GetDiffFileName()), "?ref=", commit),
+		RawURL:      fmt.Sprint(repo.HTMLURL(), "/raw/commit/", commit, "/", util.PathEscapeSegments(f.GetDiffFileName())),
+	}
+
+	if status == "rename" {
+		file.PreviousFilename = f.OldName
+	}
+
+	return file
+}