You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: adopt.go
    path of file: ./repos/gitea/routers/web/user/setting
    
    the code of the file until where you have to start completion: // Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT

package setting

import (
	"path/filepath"

	repo_model "code.gitea.io/gitea/models/repo"
	user_model "code.gitea.io/gitea/models/user"
	"code.gitea.io/gitea/modules/setting"
	"code.gitea.io/gitea/modules/util"
	"code.gitea.io/gitea/services/context"
	repo_service "code.gitea.io/gitea/services/repository"
)

// AdoptOrDeleteRepository adopts or deletes a repository
func AdoptOrDeleteRepository(ctx *context.Context) {
	ctx.Data["Title"] = ctx.Tr("settings.adopt")
	ctx.Data["PageIsSettingsRepos"] = true
	allowAdopt := ctx.IsUserSiteAdmin() || setting.Repository.AllowAdoptionOfUnadoptedRepositories
	ctx.Data["allowAdopt"] = allowAdopt
	allowDelete := ctx.IsUserSiteAdmin() || setting.Repository.AllowDeleteOfUnadoptedRepositories
	ctx.Data["allowDelete"] = allowDelete

	dir := ctx.FormString("id")
	action := ctx.FormString("action")

	ctxUser := ctx.Doer
	root := user_model.UserPath(ctxUser.LowerName)

	// check not a repo
	has, err := repo_model.IsRepositoryModelExist(ctx, ctxU
    
func AdoptOrDeleteRepository(ctx *context.Context) {
	ctx.Data["Title"] = ctx.Tr("settings.adopt")
	ctx.Data["PageIsSettingsRepos"] = true
	allowAdopt := ctx.IsUserSiteAdmin() || setting.Repository.AllowAdoptionOfUnadoptedRepositories
	ctx.Data["allowAdopt"] = allowAdopt
	allowDelete := ctx.IsUserSiteAdmin() || setting.Repository.AllowDeleteOfUnadoptedRepositories
	ctx.Data["allowDelete"] = allowDelete

	dir := ctx.FormString("id")
	action := ctx.FormString("action")

	ctxUser := ctx.Doer
	root := user_model.UserPath(ctxUser.LowerName)

	// check not a repo
	has, err := repo_model.IsRepositoryModelExist(ctx, ctxUser, dir)
	if err != nil {
		ctx.ServerError("IsRepositoryExist", err)
		return
	}

	isDir, err := util.IsDir(filepath.Join(root, dir+".git"))
	if err != nil {
		ctx.ServerError("IsDir", err)
		return
	}
	if has || !isDir {
		// Fallthrough to failure mode
	} else if action == "adopt" && allowAdopt {
		if _, err := repo_service.AdoptRepository(ctx, ctxUser, ctxUser, repo_service.CreateRepoOptions{
			Name:      dir,
			IsPrivate: true,
		}); err != nil {
			ctx.ServerError("repository.AdoptRepository", err)
			return
		}
		ctx.Flash.Success(ctx.Tr("repo.adopt_preexisting_success", dir))
	} else if action == "delete" && allowDelete {
		if err := repo_service.DeleteUnadoptedRepository(ctx, ctxUser, ctxUser, dir); err != nil {
			ctx.ServerError("repository.AdoptRepository", err)
			return
		}
		ctx.Flash.Success(ctx.Tr("repo.delete_preexisting_success", dir))
	}

	ctx.Redirect(setting.AppSubURL + "/user/settings/repos")
}