// Copyright 2014 The Gogs Authors. All rights reserved.
// Copyright 2018 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT

package setting

import (
	"errors"
	"fmt"
	"net/http"
	"strconv"
	"strings"
	"time"

	"code.gitea.io/gitea/models"
	"code.gitea.io/gitea/models/db"
	"code.gitea.io/gitea/models/organization"
	repo_model "code.gitea.io/gitea/models/repo"
	unit_model "code.gitea.io/gitea/models/unit"
	user_model "code.gitea.io/gitea/models/user"
	"code.gitea.io/gitea/modules/base"
	"code.gitea.io/gitea/modules/git"
	"code.gitea.io/gitea/modules/indexer/code"
	"code.gitea.io/gitea/modules/indexer/stats"
	"code.gitea.io/gitea/modules/lfs"
	"code.gitea.io/gitea/modules/log"
	"code.gitea.io/gitea/modules/setting"
	"code.gitea.io/gitea/modules/structs"
	"code.gitea.io/gitea/modules/util"
	"code.gitea.io/gitea/modules/validation"
	"code.gitea.io/gitea/modules/web"
	asymkey_service "code.gitea.io/gitea/services/asymkey"
	"code.gitea.io/gitea/services/context"
	"code.gitea.io/gitea/services/forms"
	"code.gitea.io/gitea/services/migrations"
	mirror_service "code.gitea.io/gitea/services/mirror"
	repo_service "code.gitea.io/gitea/services/repository"
	wiki_service "code.gitea.io/gitea/services/wiki"
)

const (
	tplSettingsOptions base.TplName = "repo/settings/options"
	tplCollaboration   base.TplName = "repo/settings/collaboration"
	tplBranches        base.TplName = "repo/settings/branches"
	tplGithooks        base.TplName = "repo/settings/githooks"
	tplGithookEdit     base.TplName = "repo/settings/githook_edit"
	tplDeployKeys      base.TplName = "repo/settings/deploy_keys"
)

// SettingsCtxData is a middleware that sets all the general context data for the
// settings template.
func SettingsCtxData(ctx *context.Context) {
	ctx.Data["Title"] = ctx.Tr("repo.settings.options")
	ctx.Data["PageIsSettingsOptions"] = true
	ctx.Data["ForcePrivate"] = setting.Repository.ForcePrivate
	ctx.Data["MirrorsEnabled"] = setting.Mirror.Enabled
	ctx.Data["DisableNewPullMirrors"] = setting.Mirror.DisableNewPull
	ctx.Data["DisableNewPushMirrors"] = setting.Mirror.DisableNewPush
	ctx.Data["DefaultMirrorInterval"] = setting.Mirror.DefaultInterval
	ctx.Data["MinimumMirrorInterval"] = setting.Mirror.MinInterval

	signing, _ := asymkey_service.SigningKey(ctx, ctx.Repo.Repository.RepoPath())
	ctx.Data["SigningKeyAvailable"] = len(signing) > 0
	ctx.Data["SigningSettings"] = setting.Repository.Signing
	ctx.Data["CodeIndexerEnabled"] = setting.Indexer.RepoIndexerEnabled

	if ctx.Doer.IsAdmin {
		if setting.Indexer.RepoIndexerEnabled {
			status, err := repo_model.GetIndexerStatus(ctx, ctx.Repo.Repository, repo_model.RepoIndexerTypeCode)
			if err != nil {
				ctx.ServerError("repo.indexer_status", err)
				return
			}
			ctx.Data["CodeIndexerStatus"] = status
		}
		status, err := repo_model.GetIndexerStatus(ctx, ctx.Repo.Repository, repo_model.RepoIndexerTypeStats)
		if err != nil {
			ctx.ServerError("repo.indexer_status", err)
			return
		}
		ctx.Data["StatsIndexerStatus"] = status
	}
	pushMirrors, _, err := repo_model.GetPushMirrorsByRepoID(ctx, ctx.Repo.Repository.ID, db.ListOptions{})
	if err != nil {
		ctx.ServerError("GetPushMirrorsByRepoID", err)
		return
	}
	ctx.Data["PushMirrors"] = pushMirrors
}

// Settings show a repository's settings page
func Settings(ctx *context.Context) {
	ctx.HTML(http.StatusOK, tplSettingsOptions)
}

// SettingsPost response for changes of a repository
func SettingsPost(ctx *context.Context) {
	form := web.GetForm(ctx).(*forms.RepoSettingForm)

	ctx.Data["ForcePrivate"] = setting.Repository.ForcePrivate
	ctx.Data["MirrorsEnabled"] = setting.Mirror.Enabled
	ctx.Data["DisableNewPullMirrors"] = setting.Mirror.DisableNewPull
	ctx.Data["DisableNewPushMirrors"] = setting.Mirror.DisableNewPush
	ctx.Data["DefaultMirrorInterval"] = setting.Mirror.DefaultInterval
	ctx.Data["MinimumMirrorInterval"] = setting.Mirror.MinInterval

	signing, _ := asymkey_service.SigningKey(ctx, ctx.Repo.Repository.RepoPath())
	ctx.Data["SigningKeyAvailable"] = len(signing) > 0
	ctx.Data["SigningSettings"] = setting.Repository.Signing
	ctx.Data["CodeIndexerEnabled"] = setting.Indexer.RepoIndexerEnabled

	repo := ctx.Repo.Repository

	switch ctx.FormString("action") {
	case "update":
		if ctx.HasError() {
			ctx.HTML(http.StatusOK, tplSettingsOptions)
			return
		}

		newRepoName := form.RepoName
		// Check if repository name has been changed.
		if repo.LowerName != strings.ToLower(newRepoName) {
			// Close the GitRepo if open
			if ctx.Repo.GitRepo != nil {
				ctx.Repo.GitRepo.Close()
				ctx.Repo.GitRepo = nil
			}
			if err := repo_service.ChangeRepositoryName(ctx, ctx.Doer, repo, newRepoName); err != nil {
				ctx.Data["Err_RepoName"] = true
				switch {
				case repo_model.IsErrRepoAlreadyExist(err):
					ctx.RenderWithErr(ctx.Tr("form.repo_name_been_taken"), tplSettingsOptions, &form)
				case db.IsErrNameReserved(err):
					ctx.RenderWithErr(ctx.Tr("repo.form.name_reserved", err.(db.ErrNameReserved).Name), tplSettingsOptions, &form)
				case repo_model.IsErrRepoFilesAlreadyExist(err):
					ctx.Data["Err_RepoName"] = true
					switch {
					case ctx.IsUserSiteAdmin() || (setting.Repository.AllowAdoptionOfUnadoptedRepositories && setting.Repository.AllowDeleteOfUnadoptedRepositories):
						ctx.RenderWithErr(ctx.Tr("form.repository_files_already_exist.adopt_or_delete"), tplSettingsOptions, form)
					case setting.Repository.AllowAdoptionOfUnadoptedRepositories:
						ctx.RenderWithErr(ctx.Tr("form.repository_files_already_exist.adopt"), tplSettingsOptions, form)
					case setting.Repository.AllowDeleteOfUnadoptedRepositories:
						ctx.RenderWithErr(ctx.Tr("form.repository_files_already_exist.delete"), tplSettingsOptions, form)
					default:
						ctx.RenderWithErr(ctx.Tr("form.repository_files_already_exist"), tplSettingsOptions, form)
					}
				case db.IsErrNamePatternNotAllowed(err):
					ctx.RenderWithErr(ctx.Tr("repo.form.name_pattern_not_allowed", err.(db.ErrNamePatternNotAllowed).Pattern), tplSettingsOptions, &form)
				default:
					ctx.ServerError("ChangeRepositoryName", err)
				}
				return
			}

			log.Trace("Repository name changed: %s/%s -> %s", ctx.Repo.Owner.Name, repo.Name, newRepoName)
		}
		// In case it's just a case change.
		repo.Name = newRepoName
		repo.LowerName = strings.ToLower(newRepoName)
		repo.Description = form.Description
		repo.Website = form.Website
		repo.IsTemplate = form.Template

		// Visibility of forked repository is forced sync with base repository.
		if repo.IsFork {
			form.Private = repo.BaseRepo.IsPrivate || repo.BaseRepo.Owner.Visibility == structs.VisibleTypePrivate
		}

		visibilityChanged := repo.IsPrivate != form.Private
		// when ForcePrivate enabled, you could change public repo to private, but only admin users can change private to public
		if visibilityChanged && setting.Repository.ForcePrivate && !form.Private && !ctx.Doer.IsAdmin {
			ctx.RenderWithErr(ctx.Tr("form.repository_force_private"), tplSettingsOptions, form)
			return
		}

		repo.IsPrivate = form.Private
		if err := repo_service.UpdateRepository(ctx, repo, visibilityChanged); err != nil {
			ctx.ServerError("UpdateRepository", err)
			return
		}
		log.Trace("Repository basic settings updated: %s/%s", ctx.Repo.Owner.Name, repo.Name)

		ctx.Flash.Success(ctx.Tr("repo.settings.update_settings_success"))
		ctx.Redirect(repo.Link() + "/settings")

	case "mirror":
		if !setting.Mirror.Enabled || !repo.IsMirror || repo.IsArchived {
			ctx.NotFound("", nil)
			return
		}

		pullMirror, err := repo_model.GetMirrorByRepoID(ctx, ctx.Repo.Repository.ID)
		if err == repo_model.ErrMirrorNotExist {
			ctx.NotFound("", nil)
			return
		}
		if err != nil {
			ctx.ServerError("GetMirrorByRepoID", err)
			return
		}
		// This section doesn't require repo_name/RepoName to be set in the form, don't show it
		// as an error on the UI for this action
		ctx.Data["Err_RepoName"] = nil

		interval, err := time.ParseDuration(form.Interval)
		if err != nil || (interval != 0 && interval < setting.Mirror.MinInterval) {
			ctx.Data["Err_Interval"] = true
			ctx.RenderWithErr(ctx.Tr("repo.mirror_interval_invalid"), tplSettingsOptions, &form)
			return
		}

		pullMirror.EnablePrune = form.EnablePrune
		pullMirror.Interval = interval
		pullMirror.ScheduleNextUpdate()
		if err := repo_model.UpdateMirror(ctx, pullMirror); err != nil {
			ctx.ServerError("UpdateMirror", err)
			return
		}

		u, err := git.GetRemoteURL(ctx, ctx.Repo.Repository.RepoPath(), pullMirror.GetRemoteName())
		if err != nil {
			ctx.Data["Err_MirrorAddress"] = true
			handleSettingRemoteAddrError(ctx, err, form)
			return
		}
		if u.User != nil && form.MirrorPassword == "" && form.MirrorUsername == u.User.Username() {
			form.MirrorPassword, _ = u.User.Password()
		}

		address, err := forms.ParseRemoteAddr(form.MirrorAddress, form.MirrorUsername, form.MirrorPassword)
		if err == nil {
			err = migrations.IsMigrateURLAllowed(address, ctx.Doer)
		}
		if err != nil {
			ctx.Data["Err_MirrorAddress"] = true
			handleSettingRemoteAddrError(ctx, err, form)
			return
		}

		if err := mirror_service.UpdateAddress(ctx, pullMirror, address); err != nil {
			ctx.ServerError("UpdateAddress", err)
			return
		}

		remoteAddress, err := util.SanitizeURL(form.MirrorAddress)
		if err != nil {
			ctx.ServerError("SanitizeURL", err)
			return
		}
		pullMirror.RemoteAddress = remoteAddress

		form.LFS = form.LFS && setting.LFS.StartServer

		if len(form.LFSEndpoint) > 0 {
			ep := lfs.DetermineEndpoint("", form.LFSEndpoint)
			if ep == nil {
				ctx.Data["Err_LFSEndpoint"] = true
				ctx.RenderWithErr(ctx.Tr("repo.migrate.invalid_lfs_endpoint"), tplSettingsOptions, &form)
				return
			}
			err = migrations.IsMigrateURLAllowed(ep.String(), ctx.Doer)
			if err != nil {
				ctx.Data["Err_LFSEndpoint"] = true
				handleSettingRemoteAddrError(ctx, err, form)
				return
			}
		}

		pullMirror.LFS = form.LFS
		pullMirror.LFSEndpoint = form.LFSEndpoint
		if err := repo_model.UpdateMirror(ctx, pullMirror); err != nil {
			ctx.ServerError("UpdateMirror", err)
			return
		}

		ctx.Flash.Success(ctx.Tr("repo.settings.update_settings_success"))
		ctx.Redirect(repo.Link() + "/settings")

	case "mirror-sync":
		if !setting.Mirror.Enabled || !repo.IsMirror || repo.IsArchived {
			ctx.NotFound("", nil)
			return
		}

		mirror_service.AddPullMirrorToQueue(repo.ID)

		ctx.Flash.Info(ctx.Tr("repo.settings.pull_mirror_sync_in_progress", repo.OriginalURL))
		ctx.Redirect(repo.Link() + "/settings")

	case "push-mirror-sync":
		if !setting.Mirror.Enabled {
			ctx.NotFound("", nil)
			return
		}

		m, err := selectPushMirrorByForm(ctx, form, repo)
		if err != nil {
			ctx.NotFound("", nil)
			return
		}

		mirror_service.AddPushMirrorToQueue(m.ID)

		ctx.Flash.Info(ctx.Tr("repo.settings.push_mirror_sync_in_progress", m.RemoteAddress))
		ctx.Redirect(repo.Link() + "/settings")

	case "push-mirror-update":
		if !setting.Mirror.Enabled || repo.IsArchived {
			ctx.NotFound("", nil)
			return
		}

		// This section doesn't require repo_name/RepoName to be set in the form, don't show it
		// as an error on the UI for this action
		ctx.Data["Err_RepoName"] = nil

		interval, err := time.ParseDuration(form.PushMirrorInterval)
		if err != nil || (interval != 0 && interval < setting.Mirror.MinInterval) {
			ctx.RenderWithErr(ctx.Tr("repo.mirror_interval_invalid"), tplSettingsOptions, &forms.RepoSettingForm{})
			return
		}

		id, err := strconv.ParseInt(form.PushMirrorID, 10, 64)
		if err != nil {
			ctx.ServerError("UpdatePushMirrorIntervalPushMirrorID", err)
			return
		}
		m := &repo_model.PushMirror{
			ID:       id,
			Interval: interval,
		}
		if err := repo_model.UpdatePushMirrorInterval(ctx, m); err != nil {
			ctx.ServerError("UpdatePushMirrorInterval", err)
			return
		}
		// Background why we are adding it to Queue
		// If we observed its implementation in the context of `push-mirror-sync` where it
		// is evident that pushing to the queue is necessary for updates.
		// So, there are updates within the given interval, it is necessary to update the queue accordingly.
		mirror_service.AddPushMirrorToQueue(m.ID)
		ctx.Flash.Success(ctx.Tr("repo.settings.update_settings_success"))
		ctx.Redirect(repo.Link() + "/settings")

	case "push-mirror-remove":
		if !setting.Mirror.Enabled || repo.IsArchived {
			ctx.NotFound("", nil)
			return
		}

		// This section doesn't require repo_name/RepoName to be set in the form, don't show it
		// as an error on the UI for this action
		ctx.Data["Err_RepoName"] = nil

		m, err := selectPushMirrorByForm(ctx, form, repo)
		if err != nil {
			ctx.NotFound("", nil)
			return
		}

		if err = mirror_service.RemovePushMirrorRemote(ctx, m); err != nil {
			ctx.ServerError("RemovePushMirrorRemote", err)
			return
		}

		if err = repo_model.DeletePushMirrors(ctx, repo_model.PushMirrorOptions{ID: m.ID, RepoID: m.RepoID}); err != nil {
			ctx.ServerError("DeletePushMirrorByID", err)
			return
		}

		ctx.Flash.Success(ctx.Tr("repo.settings.update_settings_success"))
		ctx.Redirect(repo.Link() + "/settings")

	case "push-mirror-add":
		if setting.Mirror.DisableNewPush || repo.IsArchived {
			ctx.NotFound("", nil)
			return
		}

		// This section doesn't require repo_name/RepoName to be set in the form, don't show it
		// as an error on the UI for this action
		ctx.Data["Err_RepoName"] = nil

		interval, err := time.ParseDuration(form.PushMirrorInterval)
		if err != nil || (interval != 0 && interval < setting.Mirror.MinInterval) {
			ctx.Data["Err_PushMirrorInterval"] = true
			ctx.RenderWithErr(ctx.Tr("repo.mirror_interval_invalid"), tplSettingsOptions, &form)
			return
		}

		address, err := forms.ParseRemoteAddr(form.PushMirrorAddress, form.PushMirrorUsername, form.PushMirrorPassword)
		if err == nil {
			err = migrations.IsMigrateURLAllowed(address, ctx.Doer)
		}
		if err != nil {
			ctx.Data["Err_PushMirrorAddress"] = true
			handleSettingRemoteAddrError(ctx, err, form)
			return
		}

		remoteSuffix, err := util.CryptoRandomString(10)
		if err != nil {
			ctx.ServerError("RandomString", err)
			return
		}

		remoteAddress, err := util.SanitizeURL(form.PushMirrorAddress)
		if err != nil {
			ctx.ServerError("SanitizeURL", err)
			return
		}

		m := &repo_model.PushMirror{
			RepoID:        repo.ID,
			Repo:          repo,
			RemoteName:    fmt.Sprintf("remote_mirror_%s", remoteSuffix),
			SyncOnCommit:  form.PushMirrorSyncOnCommit,
			Interval:      interval,
			RemoteAddress: remoteAddress,
		}
		if err := db.Insert(ctx, m); err != nil {
			ctx.ServerError("InsertPushMirror", err)
			return
		}

		if err := mirror_service.AddPushMirrorRemote(ctx, m, address); err != nil {
			if err := repo_model.DeletePushMirrors(ctx, repo_model.PushMirrorOptions{ID: m.ID, RepoID: m.RepoID}); err != nil {
				log.Error("DeletePushMirrors %v", err)
			}
			ctx.ServerError("AddPushMirrorRemote", err)
			return
		}

		ctx.Flash.Success(ctx.Tr("repo.settings.update_settings_success"))
		ctx.Redirect(repo.Link() + "/settings")

	case "advanced":
		var repoChanged bool
		var units []repo_model.RepoUnit
		var deleteUnitTypes []unit_model.Type

		// This section doesn't require repo_name/RepoName to be set in the form, don't show it
		// as an error on the UI for this action
		ctx.Data["Err_RepoName"] = nil

		if repo.CloseIssuesViaCommitInAnyBranch != form.EnableCloseIssuesViaCommitInAnyBranch {
			repo.CloseIssuesViaCommitInAnyBranch = form.EnableCloseIssuesViaCommitInAnyBranch
			repoChanged = true
		}

		if form.EnableCode && !unit_model.TypeCode.UnitGlobalDisabled() {
			units = append(units, repo_model.RepoUnit{
				RepoID: repo.ID,
				Type:   unit_model.TypeCode,
			})
		} else if !unit_model.TypeCode.UnitGlobalDisabled() {
			deleteUnitTypes = append(deleteUnitTypes, unit_model.TypeCode)
		}

		if form.EnableWiki && form.EnableExternalWiki && !unit_model.TypeExternalWiki.UnitGlobalDisabled() {
			if !validation.IsValidExternalURL(form.ExternalWikiURL) {
				ctx.Flash.Error(ctx.Tr("repo.settings.external_wiki_url_error"))
				ctx.Redirect(repo.Link() + "/settings")
				return
			}

			units = append(units, repo_model.RepoUnit{
				RepoID: repo.ID,
				Type:   unit_model.TypeExternalWiki,
				Config: &repo_model.ExternalWikiConfig{
					ExternalWikiURL: form.ExternalWikiURL,
				},
			})
			deleteUnitTypes = append(deleteUnitTypes, unit_model.TypeWiki)
		} else if form.EnableWiki && !form.EnableExternalWiki && !unit_model.TypeWiki.UnitGlobalDisabled() {
			units = append(units, repo_model.RepoUnit{
				RepoID: repo.ID,
				Type:   unit_model.TypeWiki,
				Config: new(repo_model.UnitConfig),
			})
			deleteUnitTypes = append(deleteUnitTypes, unit_model.TypeExternalWiki)
		} else {
			if !unit_model.TypeExternalWiki.UnitGlobalDisabled() {
				deleteUnitTypes = append(deleteUnitTypes, unit_model.TypeExternalWiki)
			}
			if !unit_model.TypeWiki.UnitGlobalDisabled() {
				deleteUnitTypes = append(deleteUnitTypes, unit_model.TypeWiki)
			}
		}

		if form.DefaultWikiBranch != "" {
			if err := wiki_service.ChangeDefaultWikiBranch(ctx, repo, form.DefaultWikiBranch); err != nil {
				log.Error("ChangeDefaultWikiBranch failed, err: %v", err)
				ctx.Flash.Warning(ctx.Tr("repo.settings.failed_to_change_default_wiki_branch"))
			}
		}

		if form.EnableIssues && form.EnableExternalTracker && !unit_model.TypeExternalTracker.UnitGlobalDisabled() {
			if !validation.IsValidExternalURL(form.ExternalTrackerURL) {
				ctx.Flash.Error(ctx.Tr("repo.settings.external_tracker_url_error"))
				ctx.Redirect(repo.Link() + "/settings")
				return
			}
			if len(form.TrackerURLFormat) != 0 && !validation.IsValidExternalTrackerURLFormat(form.TrackerURLFormat) {
				ctx.Flash.Error(ctx.Tr("repo.settings.tracker_url_format_error"))
				ctx.Redirect(repo.Link() + "/settings")
				return
			}
			units = append(units, repo_model.RepoUnit{
				RepoID: repo.ID,
				Type:   unit_model.TypeExternalTracker,
				Config: &repo_model.ExternalTrackerConfig{
					ExternalTrackerURL:           form.ExternalTrackerURL,
					ExternalTrackerFormat:        form.TrackerURLFormat,
					ExternalTrackerStyle:         form.TrackerIssueStyle,
					ExternalTrackerRegexpPattern: form.ExternalTrackerRegexpPattern,
				},
			})
			deleteUnitTypes = append(deleteUnitTypes, unit_model.TypeIssues)
		} else if form.EnableIssues && !form.EnableExternalTracker && !unit_model.TypeIssues.UnitGlobalDisabled() {
			units = append(units, repo_model.RepoUnit{
				RepoID: repo.ID,
				Type:   unit_model.TypeIssues,
				Config: &repo_model.IssuesConfig{
					EnableTimetracker:                form.EnableTimetracker,
					AllowOnlyContributorsToTrackTime: form.AllowOnlyContributorsToTrackTime,
					EnableDependencies:               form.EnableIssueDependencies,
				},
			})
			deleteUnitTypes = append(deleteUnitTypes, unit_model.TypeExternalTracker)
		} else {
			if !unit_model.TypeExternalTracker.UnitGlobalDisabled() {
				deleteUnitTypes = append(deleteUnitTypes, unit_model.TypeExternalTracker)
			}
			if !unit_model.TypeIssues.UnitGlobalDisabled() {
				deleteUnitTypes = append(deleteUnitTypes, unit_model.TypeIssues)
			}
		}

		if form.EnableProjects && !unit_model.TypeProjects.UnitGlobalDisabled() {
			units = append(units, repo_model.RepoUnit{
				RepoID: repo.ID,
				Type:   unit_model.TypeProjects,
				Config: &repo_model.ProjectsConfig{
					ProjectsMode: repo_model.ProjectsMode(form.ProjectsMode),
				},
			})
		} else if !unit_model.TypeProjects.UnitGlobalDisabled() {
			deleteUnitTypes = append(deleteUnitTypes, unit_model.TypeProjects)
		}

		if form.EnableReleases && !unit_model.TypeReleases.UnitGlobalDisabled() {
			units = append(units, repo_model.RepoUnit{
				RepoID: repo.ID,
				Type:   unit_model.TypeReleases,
			})
		} else if !unit_model.TypeReleases.UnitGlobalDisabled() {
			deleteUnitTypes = append(deleteUnitTypes, unit_model.TypeReleases)
		}

		if form.EnablePackages && !unit_model.TypePackages.UnitGlobalDisabled() {
			units = append(units, repo_model.RepoUnit{
				RepoID: repo.ID,
				Type:   unit_model.TypePackages,
			})
		} else if !unit_model.TypePackages.UnitGlobalDisabled() {
			deleteUnitTypes = append(deleteUnitTypes, unit_model.TypePackages)
		}

		if form.EnableActions && !unit_model.TypeActions.UnitGlobalDisabled() {
			units = append(units, repo_model.RepoUnit{
				RepoID: repo.ID,
				Type:   unit_model.TypeActions,
			})
		} else if !unit_model.TypeActions.UnitGlobalDisabled() {
			deleteUnitTypes = append(deleteUnitTypes, unit_model.TypeActions)
		}

		if form.EnablePulls && !unit_model.TypePullRequests.UnitGlobalDisabled() {
			units = append(units, repo_model.RepoUnit{
				RepoID: repo.ID,
				Type:   unit_model.TypePullRequests,
				Config: &repo_model.PullRequestsConfig{
					IgnoreWhitespaceConflicts:     form.PullsIgnoreWhitespace,
					ShowDependencies:              form.PullsShowDependencies,
					AllowMerge:                    form.PullsAllowMerge,
					AllowRebase:                   form.PullsAllowRebase,
					AllowRebaseMerge:              form.PullsAllowRebaseMerge,
					AllowSquash:                   form.PullsAllowSquash,
					AllowFastForwardOnly:          form.PullsAllowFastForwardOnly,
					AllowManualMerge:              form.PullsAllowManualMerge,
					AutodetectManualMerge:         form.EnableAutodetectManualMerge,
					AllowRebaseUpdate:             form.PullsAllowRebaseUpdate,
					DefaultDeleteBranchAfterMerge: form.DefaultDeleteBranchAfterMerge,
					DefaultMergeStyle:             repo_model.MergeStyle(form.PullsDefaultMergeStyle),
					DefaultAllowMaintainerEdit:    form.DefaultAllowMaintainerEdit,
				},
			})
		} else if !unit_model.TypePullRequests.UnitGlobalDisabled() {
			deleteUnitTypes = append(deleteUnitTypes, unit_model.TypePullRequests)
		}

		if len(units) == 0 {
			ctx.Flash.Error(ctx.Tr("repo.settings.update_settings_no_unit"))
			ctx.Redirect(ctx.Repo.RepoLink + "/settings")
			return
		}

		if err := repo_service.UpdateRepositoryUnits(ctx, repo, units, deleteUnitTypes); err != nil {
			ctx.ServerError("UpdateRepositoryUnits", err)
			return
		}
		if repoChanged {
			if err := repo_service.UpdateRepository(ctx, repo, false); err != nil {
				ctx.ServerError("UpdateRepository", err)
				return
			}
		}
		log.Trace("Repository advanced settings updated: %s/%s", ctx.Repo.Owner.Name, repo.Name)

		ctx.Flash.Success(ctx.Tr("repo.settings.update_settings_success"))
		ctx.Redirect(ctx.Repo.RepoLink + "/settings")

	case "signing":
		changed := false
		trustModel := repo_model.ToTrustModel(form.TrustModel)
		if trustModel != repo.TrustModel {
			repo.TrustModel = trustModel
			changed = true
		}

		if changed {
			if err := repo_service.UpdateRepository(ctx, repo, false); err != nil {
				ctx.ServerError("UpdateRepository", err)
				return
			}
		}
		log.Trace("Repository signing settings updated: %s/%s", ctx.Repo.Owner.Name, repo.Name)

		ctx.Flash.Success(ctx.Tr("repo.settings.update_settings_success"))
		ctx.Redirect(ctx.Repo.RepoLink + "/settings")

	case "admin":
		if !ctx.Doer.IsAdmin {
			ctx.Error(http.StatusForbidden)
			return
		}

		if repo.IsFsckEnabled != form.EnableHealthCheck {
			repo.IsFsckEnabled = form.EnableHealthCheck
		}

		if err := repo_service.UpdateRepository(ctx, repo, false); err != nil {
			ctx.ServerError("UpdateRepository", err)
			return
		}

		log.Trace("Repository admin settings updated: %s/%s", ctx.Repo.Owner.Name, repo.Name)

		ctx.Flash.Success(ctx.Tr("repo.settings.update_settings_success"))
		ctx.Redirect(ctx.Repo.RepoLink + "/settings")

	case "admin_index":
		if !ctx.Doer.IsAdmin {
			ctx.Error(http.StatusForbidden)
			return
		}

		switch form.RequestReindexType {
		case "stats":
			if err := stats.UpdateRepoIndexer(ctx.Repo.Repository); err != nil {
				ctx.ServerError("UpdateStatsRepondexer", err)
				return
			}
		case "code":
			if !setting.Indexer.RepoIndexerEnabled {
				ctx.Error(http.StatusForbidden)
				return
			}
			code.UpdateRepoIndexer(ctx.Repo.Repository)
		default:
			ctx.NotFound("", nil)
			return
		}

		log.Trace("Repository reindex for %s requested: %s/%s", form.RequestReindexType, ctx.Repo.Owner.Name, repo.Name)

		ctx.Flash.Success(ctx.Tr("repo.settings.reindex_requested"))
		ctx.Redirect(ctx.Repo.RepoLink + "/settings")

	case "convert":
		if !ctx.Repo.IsOwner() {
			ctx.Error(http.StatusNotFound)
			return
		}
		if repo.Name != form.RepoName {
			ctx.RenderWithErr(ctx.Tr("form.enterred_invalid_repo_name"), tplSettingsOptions, nil)
			return
		}

		if !repo.IsMirror {
			ctx.Error(http.StatusNotFound)
			return
		}
		repo.IsMirror = false

		if _, err := repo_service.CleanUpMigrateInfo(ctx, repo); err != nil {
			ctx.ServerError("CleanUpMigrateInfo", err)
			return
		} else if err = repo_model.DeleteMirrorByRepoID(ctx, ctx.Repo.Repository.ID); err != nil {
			ctx.ServerError("DeleteMirrorByRepoID", err)
			return
		}
		log.Trace("Repository converted from mirror to regular: %s", repo.FullName())
		ctx.Flash.Success(ctx.Tr("repo.settings.convert_succeed"))
		ctx.Redirect(repo.Link())

	case "convert_fork":
		if !ctx.Repo.IsOwner() {
			ctx.Error(http.StatusNotFound)
			return
		}
		if err := repo.LoadOwner(ctx); err != nil {
			ctx.ServerError("Convert Fork", err)
			return
		}
		if repo.Name != form.RepoName {
			ctx.RenderWithErr(ctx.Tr("form.enterred_invalid_repo_name"), tplSettingsOptions, nil)
			return
		}

		if !repo.IsFork {
			ctx.Error(http.StatusNotFound)
			return
		}

		if !ctx.Repo.Owner.CanCreateRepo() {
			maxCreationLimit := ctx.Repo.Owner.MaxCreationLimit()
			msg := ctx.TrN(maxCreationLimit, "repo.form.reach_limit_of_creation_1", "repo.form.reach_limit_of_creation_n", maxCreationLimit)
			ctx.Flash.Error(msg)
			ctx.Redirect(repo.Link() + "/settings")
			return
		}

		if err := repo_service.ConvertForkToNormalRepository(ctx, repo); err != nil {
			log.Error("Unable to convert repository %-v from fork. Error: %v", repo, err)
			ctx.ServerError("Convert Fork", err)
			return
		}

		log.Trace("Repository converted from fork to regular: %s", repo.FullName())
		ctx.Flash.Success(ctx.Tr("repo.settings.convert_fork_succeed"))
		ctx.Redirect(repo.Link())

	case "transfer":
		if !ctx.Repo.IsOwner() {
			ctx.Error(http.StatusNotFound)
			return
		}
		if repo.Name != form.RepoName {
			ctx.RenderWithErr(ctx.Tr("form.enterred_invalid_repo_name"), tplSettingsOptions, nil)
			return
		}

		newOwner, err := user_model.GetUserByName(ctx, ctx.FormString("new_owner_name"))
		if err != nil {
			if user_model.IsErrUserNotExist(err) {
				ctx.RenderWithErr(ctx.Tr("form.enterred_invalid_owner_name"), tplSettingsOptions, nil)
				return
			}
			ctx.ServerError("IsUserExist", err)
			return
		}

		if newOwner.Type == user_model.UserTypeOrganization {
			if !ctx.Doer.IsAdmin && newOwner.Visibility == structs.VisibleTypePrivate && !organization.OrgFromUser(newOwner).HasMemberWithUserID(ctx, ctx.Doer.ID) {
				// The user shouldn't know about this organization
				ctx.RenderWithErr(ctx.Tr("form.enterred_invalid_owner_name"), tplSettingsOptions, nil)
				return
			}
		}

		// Close the GitRepo if open
		if ctx.Repo.GitRepo != nil {
			ctx.Repo.GitRepo.Close()
			ctx.Repo.GitRepo = nil
		}

		if err := repo_service.StartRepositoryTransfer(ctx, ctx.Doer, newOwner, repo, nil); err != nil {
			if repo_model.IsErrRepoAlreadyExist(err) {
				ctx.RenderWithErr(ctx.Tr("repo.settings.new_owner_has_same_repo"), tplSettingsOptions, nil)
			} else if models.IsErrRepoTransferInProgress(err) {
				ctx.RenderWithErr(ctx.Tr("repo.settings.transfer_in_progress"), tplSettingsOptions, nil)
			} else if errors.Is(err, user_model.ErrBlockedUser) {
				ctx.RenderWithErr(ctx.Tr("repo.settings.transfer.blocked_user"), tplSettingsOptions, nil)
			} else {
				ctx.ServerError("TransferOwnership", err)
			}

			return
		}

		log.Trace("Repository transfer process was started: %s/%s -> %s", ctx.Repo.Owner.Name, repo.Name, newOwner)
		ctx.Flash.Success(ctx.Tr("repo.settings.transfer_started", newOwner.DisplayName()))
		ctx.Redirect(repo.Link() + "/settings")

	case "cancel_transfer":
		if !ctx.Repo.IsOwner() {
			ctx.Error(http.StatusNotFound)
			return
		}

		repoTransfer, err := models.GetPendingRepositoryTransfer(ctx, ctx.Repo.Repository)
		if err != nil {
			if models.IsErrNoPendingTransfer(err) {
				ctx.Flash.Error("repo.settings.transfer_abort_invalid")
				ctx.Redirect(repo.Link() + "/settings")
			} else {
				ctx.ServerError("GetPendingRepositoryTransfer", err)
			}

			return
		}

		if err := repoTransfer.LoadAttributes(ctx); err != nil {
			ctx.ServerError("LoadRecipient", err)
			return
		}

		if err := repo_service.CancelRepositoryTransfer(ctx, ctx.Repo.Repository); err != nil {
			ctx.ServerError("CancelRepositoryTransfer", err)
			return
		}

		log.Trace("Repository transfer process was cancelled: %s/%s ", ctx.Repo.Owner.Name, repo.Name)
		ctx.Flash.Success(ctx.Tr("repo.settings.transfer_abort_success", repoTransfer.Recipient.Name))
		ctx.Redirect(repo.Link() + "/settings")

	case "delete":
		if !ctx.Repo.IsOwner() {
			ctx.Error(http.StatusNotFound)
			return
		}
		if repo.Name != form.RepoName {
			ctx.RenderWithErr(ctx.Tr("form.enterred_invalid_repo_name"), tplSettingsOptions, nil)
			return
		}

		// Close the gitrepository before doing this.
		if ctx.Repo.GitRepo != nil {
			ctx.Repo.GitRepo.Close()
		}

		if err := repo_service.DeleteRepository(ctx, ctx.Doer, ctx.Repo.Repository, true); err != nil {
			ctx.ServerError("DeleteRepository", err)
			return
		}
		log.Trace("Repository deleted: %s/%s", ctx.Repo.Owner.Name, repo.Name)

		ctx.Flash.Success(ctx.Tr("repo.settings.deletion_success"))
		ctx.Redirect(ctx.Repo.Owner.DashboardLink())

	case "delete-wiki":
		if !ctx.Repo.IsOwner() {
			ctx.Error(http.StatusNotFound)
			return
		}
		if repo.Name != form.RepoName {
			ctx.RenderWithErr(ctx.Tr("form.enterred_invalid_repo_name"), tplSettingsOptions, nil)
			return
		}

		err := wiki_service.DeleteWiki(ctx, repo)
		if err != nil {
			log.Error("Delete Wiki: %v", err.Error())
		}
		log.Trace("Repository wiki deleted: %s/%s", ctx.Repo.Owner.Name, repo.Name)

		ctx.Flash.Success(ctx.Tr("repo.settings.wiki_deletion_success"))
		ctx.Redirect(ctx.Repo.RepoLink + "/settings")

	case "archive":
		if !ctx.Repo.IsOwner() {
			ctx.Error(http.StatusForbidden)
			return
		}

		if repo.IsMirror {
			ctx.Flash.Error(ctx.Tr("repo.settings.archive.error_ismirror"))
			ctx.Redirect(ctx.Repo.RepoLink + "/settings")
			return
		}

		if err := repo_model.SetArchiveRepoState(ctx, repo, true); err != nil {
			log.Error("Tried to archive a repo: %s", err)
			ctx.Flash.Error(ctx.Tr("repo.settings.archive.error"))
			ctx.Redirect(ctx.Repo.RepoLink + "/settings")
			return
		}

		ctx.Flash.Success(ctx.Tr("repo.settings.archive.success"))

		log.Trace("Repository was archived: %s/%s", ctx.Repo.Owner.Name, repo.Name)
		ctx.Redirect(ctx.Repo.RepoLink + "/settings")

	case "unarchive":
		if !ctx.Repo.IsOwner() {
			ctx.Error(http.StatusForbidden)
			return
		}

		if err := repo_model.SetArchiveRepoState(ctx, repo, false); err != nil {
			log.Error("Tried to unarchive a repo: %s", err)
			ctx.Flash.Error(ctx.Tr("repo.settings.unarchive.error"))
			ctx.Redirect(ctx.Repo.RepoLink + "/settings")
			return
		}

		ctx.Flash.Success(ctx.Tr("repo.settings.unarchive.success"))

		log.Trace("Repository was un-archived: %s/%s", ctx.Repo.Owner.Name, repo.Name)
		ctx.Redirect(ctx.Repo.RepoLink + "/settings")

	default:
		ctx.NotFound("", nil)
	}
}

func handleSettingRemoteAddrError(ctx *context.Context, err error, form *forms.RepoSettingForm) {
	if models.IsErrInvalidCloneAddr(err) {
		addrErr := err.(*models.ErrInvalidCloneAddr)
		switch {
		case addrErr.IsProtocolInvalid:
			ctx.RenderWithErr(ctx.Tr("repo.mirror_address_protocol_invalid"), tplSettingsOptions, form)
		case addrErr.IsURLError:
			ctx.RenderWithErr(ctx.Tr("form.url_error", addrErr.Host), tplSettingsOptions, form)
		case addrErr.IsPermissionDenied:
			if addrErr.LocalPath {
				ctx.RenderWithErr(ctx.Tr("repo.migrate.permission_denied"), tplSettingsOptions, form)
			} else {
				ctx.RenderWithErr(ctx.Tr("repo.migrate.permission_denied_blocked"), tplSettingsOptions, form)
			}
		case addrErr.IsInvalidPath:
			ctx.RenderWithErr(ctx.Tr("repo.migrate.invalid_local_path"), tplSettingsOptions, form)
		default:
			ctx.ServerError("Unknown error", err)
		}
		return
	}
	ctx.RenderWithErr(ctx.Tr("repo.mirror_address_url_invalid"), tplSettingsOptions, form)
}

func selectPushMirrorByForm(ctx *context.Context, form *forms.RepoSettingForm, repo *repo_model.Repository) (*repo_model.PushMirror, error) {
	id, err := strconv.ParseInt(form.PushMirrorID, 10, 64)
	if err != nil {
		return nil, err
	}

	pushMirrors, _, err := repo_model.GetPushMirrorsByRepoID(ctx, repo.ID, db.ListOptions{})
	if err != nil {
		return nil, err
	}

	for _, m := range pushMirrors {
		if m.ID == id {
			m.Repo = repo
			return m, nil
		}
	}

	return nil, fmt.Errorf("PushMirror[%v] not associated to repository %v", id, repo)
}