// Copyright 2015 The Gogs Authors. All rights reserved.
// Copyright 2016 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 v1 Gitea API.
//
// This documentation describes the Gitea API.
//
//     Schemes: http, https
//     BasePath: /api/v1
//     Version: {{AppVer | JSEscape | Safe}}
//     License: MIT http://opensource.org/licenses/MIT
//
//     Consumes:
//     - application/json
//     - text/plain
//
//     Produces:
//     - application/json
//     - text/html
//
//     Security:
//     - BasicAuth :
//     - Token :
//     - AccessToken :
//     - AuthorizationHeaderToken :
//     - SudoParam :
//     - SudoHeader :
//     - TOTPHeader :
//
//     SecurityDefinitions:
//     BasicAuth:
//          type: basic
//     Token:
//          type: apiKey
//          name: token
//          in: query
//     AccessToken:
//          type: apiKey
//          name: access_token
//          in: query
//     AuthorizationHeaderToken:
//          type: apiKey
//          name: Authorization
//          in: header
//          description: API tokens must be prepended with "token" followed by a space.
//     SudoParam:
//          type: apiKey
//          name: sudo
//          in: query
//          description: Sudo API request as the user provided as the key. Admin privileges are required.
//     SudoHeader:
//          type: apiKey
//          name: Sudo
//          in: header
//          description: Sudo API request as the user provided as the key. Admin privileges are required.
//     TOTPHeader:
//          type: apiKey
//          name: X-GITEA-OTP
//          in: header
//          description: Must be used in combination with BasicAuth if two-factor authentication is enabled.
//
// swagger:meta
package v1

import (
	"net/http"
	"reflect"
	"strings"

	"code.gitea.io/gitea/models"
	"code.gitea.io/gitea/modules/context"
	auth "code.gitea.io/gitea/modules/forms"
	"code.gitea.io/gitea/modules/log"
	"code.gitea.io/gitea/modules/setting"
	api "code.gitea.io/gitea/modules/structs"
	"code.gitea.io/gitea/modules/web"
	"code.gitea.io/gitea/routers/api/v1/admin"
	"code.gitea.io/gitea/routers/api/v1/misc"
	"code.gitea.io/gitea/routers/api/v1/notify"
	"code.gitea.io/gitea/routers/api/v1/org"
	"code.gitea.io/gitea/routers/api/v1/repo"
	"code.gitea.io/gitea/routers/api/v1/settings"
	_ "code.gitea.io/gitea/routers/api/v1/swagger" // for swagger generation
	"code.gitea.io/gitea/routers/api/v1/user"

	"gitea.com/go-chi/binding"
	"gitea.com/go-chi/session"
	"github.com/go-chi/cors"
)

func sudo() func(ctx *context.APIContext) {
	return func(ctx *context.APIContext) {
		sudo := ctx.Query("sudo")
		if len(sudo) == 0 {
			sudo = ctx.Req.Header.Get("Sudo")
		}

		if len(sudo) > 0 {
			if ctx.IsSigned && ctx.User.IsAdmin {
				user, err := models.GetUserByName(sudo)
				if err != nil {
					if models.IsErrUserNotExist(err) {
						ctx.NotFound()
					} else {
						ctx.Error(http.StatusInternalServerError, "GetUserByName", err)
					}
					return
				}
				log.Trace("Sudo from (%s) to: %s", ctx.User.Name, user.Name)
				ctx.User = user
			} else {
				ctx.JSON(http.StatusForbidden, map[string]string{
					"message": "Only administrators allowed to sudo.",
				})
				return
			}
		}
	}
}

func repoAssignment() func(ctx *context.APIContext) {
	return func(ctx *context.APIContext) {
		userName := ctx.Params("username")
		repoName := ctx.Params("reponame")

		var (
			owner *models.User
			err   error
		)

		// Check if the user is the same as the repository owner.
		if ctx.IsSigned && ctx.User.LowerName == strings.ToLower(userName) {
			owner = ctx.User
		} else {
			owner, err = models.GetUserByName(userName)
			if err != nil {
				if models.IsErrUserNotExist(err) {
					if redirectUserID, err := models.LookupUserRedirect(userName); err == nil {
						context.RedirectToUser(ctx.Context, userName, redirectUserID)
					} else if models.IsErrUserRedirectNotExist(err) {
						ctx.NotFound("GetUserByName", err)
					} else {
						ctx.Error(http.StatusInternalServerError, "LookupUserRedirect", err)
					}
				} else {
					ctx.Error(http.StatusInternalServerError, "GetUserByName", err)
				}
				return
			}
		}
		ctx.Repo.Owner = owner

		// Get repository.
		repo, err := models.GetRepositoryByName(owner.ID, repoName)
		if err != nil {
			if models.IsErrRepoNotExist(err) {
				redirectRepoID, err := models.LookupRepoRedirect(owner.ID, repoName)
				if err == nil {
					context.RedirectToRepo(ctx.Context, redirectRepoID)
				} else if models.IsErrRepoRedirectNotExist(err) {
					ctx.NotFound()
				} else {
					ctx.Error(http.StatusInternalServerError, "LookupRepoRedirect", err)
				}
			} else {
				ctx.Error(http.StatusInternalServerError, "GetRepositoryByName", err)
			}
			return
		}

		repo.Owner = owner
		ctx.Repo.Repository = repo

		ctx.Repo.Permission, err = models.GetUserRepoPermission(repo, ctx.User)
		if err != nil {
			ctx.Error(http.StatusInternalServerError, "GetUserRepoPermission", err)
			return
		}

		if !ctx.Repo.HasAccess() {
			ctx.NotFound()
			return
		}
	}
}

// Contexter middleware already checks token for user sign in process.
func reqToken() func(ctx *context.APIContext) {
	return func(ctx *context.APIContext) {
		if true == ctx.Data["IsApiToken"] {
			return
		}
		if ctx.Context.IsBasicAuth {
			ctx.CheckForOTP()
			return
		}
		if ctx.IsSigned {
			ctx.RequireCSRF()
			return
		}
		ctx.Error(http.StatusUnauthorized, "reqToken", "token is required")
	}
}

func reqExploreSignIn() func(ctx *context.APIContext) {
	return func(ctx *context.APIContext) {
		if setting.Service.Explore.RequireSigninView && !ctx.IsSigned {
			ctx.Error(http.StatusUnauthorized, "reqExploreSignIn", "you must be signed in to search for users")
		}
	}
}

func reqBasicAuth() func(ctx *context.APIContext) {
	return func(ctx *context.APIContext) {
		if !ctx.Context.IsBasicAuth {
			ctx.Error(http.StatusUnauthorized, "reqBasicAuth", "basic auth required")
			return
		}
		ctx.CheckForOTP()
	}
}

// reqSiteAdmin user should be the site admin
func reqSiteAdmin() func(ctx *context.APIContext) {
	return func(ctx *context.APIContext) {
		if !ctx.IsUserSiteAdmin() {
			ctx.Error(http.StatusForbidden, "reqSiteAdmin", "user should be the site admin")
			return
		}
	}
}

// reqOwner user should be the owner of the repo or site admin.
func reqOwner() func(ctx *context.APIContext) {
	return func(ctx *context.APIContext) {
		if !ctx.IsUserRepoOwner() && !ctx.IsUserSiteAdmin() {
			ctx.Error(http.StatusForbidden, "reqOwner", "user should be the owner of the repo")
			return
		}
	}
}

// reqAdmin user should be an owner or a collaborator with admin write of a repository, or site admin
func reqAdmin() func(ctx *context.APIContext) {
	return func(ctx *context.APIContext) {
		if !ctx.IsUserRepoAdmin() && !ctx.IsUserSiteAdmin() {
			ctx.Error(http.StatusForbidden, "reqAdmin", "user should be an owner or a collaborator with admin write of a repository")
			return
		}
	}
}

// reqRepoWriter user should have a permission to write to a repo, or be a site admin
func reqRepoWriter(unitTypes ...models.UnitType) func(ctx *context.APIContext) {
	return func(ctx *context.APIContext) {
		if !ctx.IsUserRepoWriter(unitTypes) && !ctx.IsUserRepoAdmin() && !ctx.IsUserSiteAdmin() {
			ctx.Error(http.StatusForbidden, "reqRepoWriter", "user should have a permission to write to a repo")
			return
		}
	}
}

// reqRepoReader user should have specific read permission or be a repo admin or a site admin
func reqRepoReader(unitType models.UnitType) func(ctx *context.APIContext) {
	return func(ctx *context.APIContext) {
		if !ctx.IsUserRepoReaderSpecific(unitType) && !ctx.IsUserRepoAdmin() && !ctx.IsUserSiteAdmin() {
			ctx.Error(http.StatusForbidden, "reqRepoReader", "user should have specific read permission or be a repo admin or a site admin")
			return
		}
	}
}

// reqAnyRepoReader user should have any permission to read repository or permissions of site admin
func reqAnyRepoReader() func(ctx *context.APIContext) {
	return func(ctx *context.APIContext) {
		if !ctx.IsUserRepoReaderAny() && !ctx.IsUserSiteAdmin() {
			ctx.Error(http.StatusForbidden, "reqAnyRepoReader", "user should have any permission to read repository or permissions of site admin")
			return
		}
	}
}

// reqOrgOwnership user should be an organization owner, or a site admin
func reqOrgOwnership() func(ctx *context.APIContext) {
	return func(ctx *context.APIContext) {
		if ctx.Context.IsUserSiteAdmin() {
			return
		}

		var orgID int64
		if ctx.Org.Organization != nil {
			orgID = ctx.Org.Organization.ID
		} else if ctx.Org.Team != nil {
			orgID = ctx.Org.Team.OrgID
		} else {
			ctx.Error(http.StatusInternalServerError, "", "reqOrgOwnership: unprepared context")
			return
		}

		isOwner, err := models.IsOrganizationOwner(orgID, ctx.User.ID)
		if err != nil {
			ctx.Error(http.StatusInternalServerError, "IsOrganizationOwner", err)
			return
		} else if !isOwner {
			if ctx.Org.Organization != nil {
				ctx.Error(http.StatusForbidden, "", "Must be an organization owner")
			} else {
				ctx.NotFound()
			}
			return
		}
	}
}

// reqTeamMembership user should be an team member, or a site admin
func reqTeamMembership() func(ctx *context.APIContext) {
	return func(ctx *context.APIContext) {
		if ctx.Context.IsUserSiteAdmin() {
			return
		}
		if ctx.Org.Team == nil {
			ctx.Error(http.StatusInternalServerError, "", "reqTeamMembership: unprepared context")
			return
		}

		var orgID = ctx.Org.Team.OrgID
		isOwner, err := models.IsOrganizationOwner(orgID, ctx.User.ID)
		if err != nil {
			ctx.Error(http.StatusInternalServerError, "IsOrganizationOwner", err)
			return
		} else if isOwner {
			return
		}

		if isTeamMember, err := models.IsTeamMember(orgID, ctx.Org.Team.ID, ctx.User.ID); err != nil {
			ctx.Error(http.StatusInternalServerError, "IsTeamMember", err)
			return
		} else if !isTeamMember {
			isOrgMember, err := models.IsOrganizationMember(orgID, ctx.User.ID)
			if err != nil {
				ctx.Error(http.StatusInternalServerError, "IsOrganizationMember", err)
			} else if isOrgMember {
				ctx.Error(http.StatusForbidden, "", "Must be a team member")
			} else {
				ctx.NotFound()
			}
			return
		}
	}
}

// reqOrgMembership user should be an organization member, or a site admin
func reqOrgMembership() func(ctx *context.APIContext) {
	return func(ctx *context.APIContext) {
		if ctx.Context.IsUserSiteAdmin() {
			return
		}

		var orgID int64
		if ctx.Org.Organization != nil {
			orgID = ctx.Org.Organization.ID
		} else if ctx.Org.Team != nil {
			orgID = ctx.Org.Team.OrgID
		} else {
			ctx.Error(http.StatusInternalServerError, "", "reqOrgMembership: unprepared context")
			return
		}

		if isMember, err := models.IsOrganizationMember(orgID, ctx.User.ID); err != nil {
			ctx.Error(http.StatusInternalServerError, "IsOrganizationMember", err)
			return
		} else if !isMember {
			if ctx.Org.Organization != nil {
				ctx.Error(http.StatusForbidden, "", "Must be an organization member")
			} else {
				ctx.NotFound()
			}
			return
		}
	}
}

func reqGitHook() func(ctx *context.APIContext) {
	return func(ctx *context.APIContext) {
		if !ctx.User.CanEditGitHook() {
			ctx.Error(http.StatusForbidden, "", "must be allowed to edit Git hooks")
			return
		}
	}
}

// reqWebhooksEnabled requires webhooks to be enabled by admin.
func reqWebhooksEnabled() func(ctx *context.APIContext) {
	return func(ctx *context.APIContext) {
		if setting.DisableWebhooks {
			ctx.Error(http.StatusForbidden, "", "webhooks disabled by administrator")
			return
		}
	}
}

func orgAssignment(args ...bool) func(ctx *context.APIContext) {
	var (
		assignOrg  bool
		assignTeam bool
	)
	if len(args) > 0 {
		assignOrg = args[0]
	}
	if len(args) > 1 {
		assignTeam = args[1]
	}
	return func(ctx *context.APIContext) {
		ctx.Org = new(context.APIOrganization)

		var err error
		if assignOrg {
			ctx.Org.Organization, err = models.GetOrgByName(ctx.Params(":org"))
			if err != nil {
				if models.IsErrOrgNotExist(err) {
					redirectUserID, err := models.LookupUserRedirect(ctx.Params(":org"))
					if err == nil {
						context.RedirectToUser(ctx.Context, ctx.Params(":org"), redirectUserID)
					} else if models.IsErrUserRedirectNotExist(err) {
						ctx.NotFound("GetOrgByName", err)
					} else {
						ctx.Error(http.StatusInternalServerError, "LookupUserRedirect", err)
					}
				} else {
					ctx.Error(http.StatusInternalServerError, "GetOrgByName", err)
				}
				return
			}
		}

		if assignTeam {
			ctx.Org.Team, err = models.GetTeamByID(ctx.ParamsInt64(":teamid"))
			if err != nil {
				if models.IsErrTeamNotExist(err) {
					ctx.NotFound()
				} else {
					ctx.Error(http.StatusInternalServerError, "GetTeamById", err)
				}
				return
			}
		}
	}
}

func mustEnableIssues(ctx *context.APIContext) {
	if !ctx.Repo.CanRead(models.UnitTypeIssues) {
		if log.IsTrace() {
			if ctx.IsSigned {
				log.Trace("Permission Denied: User %-v cannot read %-v in Repo %-v\n"+
					"User in Repo has Permissions: %-+v",
					ctx.User,
					models.UnitTypeIssues,
					ctx.Repo.Repository,
					ctx.Repo.Permission)
			} else {
				log.Trace("Permission Denied: Anonymous user cannot read %-v in Repo %-v\n"+
					"Anonymous user in Repo has Permissions: %-+v",
					models.UnitTypeIssues,
					ctx.Repo.Repository,
					ctx.Repo.Permission)
			}
		}
		ctx.NotFound()
		return
	}
}

func mustAllowPulls(ctx *context.APIContext) {
	if !(ctx.Repo.Repository.CanEnablePulls() && ctx.Repo.CanRead(models.UnitTypePullRequests)) {
		if ctx.Repo.Repository.CanEnablePulls() && log.IsTrace() {
			if ctx.IsSigned {
				log.Trace("Permission Denied: User %-v cannot read %-v in Repo %-v\n"+
					"User in Repo has Permissions: %-+v",
					ctx.User,
					models.UnitTypePullRequests,
					ctx.Repo.Repository,
					ctx.Repo.Permission)
			} else {
				log.Trace("Permission Denied: Anonymous user cannot read %-v in Repo %-v\n"+
					"Anonymous user in Repo has Permissions: %-+v",
					models.UnitTypePullRequests,
					ctx.Repo.Repository,
					ctx.Repo.Permission)
			}
		}
		ctx.NotFound()
		return
	}
}

func mustEnableIssuesOrPulls(ctx *context.APIContext) {
	if !ctx.Repo.CanRead(models.UnitTypeIssues) &&
		!(ctx.Repo.Repository.CanEnablePulls() && ctx.Repo.CanRead(models.UnitTypePullRequests)) {
		if ctx.Repo.Repository.CanEnablePulls() && log.IsTrace() {
			if ctx.IsSigned {
				log.Trace("Permission Denied: User %-v cannot read %-v and %-v in Repo %-v\n"+
					"User in Repo has Permissions: %-+v",
					ctx.User,
					models.UnitTypeIssues,
					models.UnitTypePullRequests,
					ctx.Repo.Repository,
					ctx.Repo.Permission)
			} else {
				log.Trace("Permission Denied: Anonymous user cannot read %-v and %-v in Repo %-v\n"+
					"Anonymous user in Repo has Permissions: %-+v",
					models.UnitTypeIssues,
					models.UnitTypePullRequests,
					ctx.Repo.Repository,
					ctx.Repo.Permission)
			}
		}
		ctx.NotFound()
		return
	}
}

func mustNotBeArchived(ctx *context.APIContext) {
	if ctx.Repo.Repository.IsArchived {
		ctx.NotFound()
		return
	}
}

// bind binding an obj to a func(ctx *context.APIContext)
func bind(obj interface{}) http.HandlerFunc {
	var tp = reflect.TypeOf(obj)
	for tp.Kind() == reflect.Ptr {
		tp = tp.Elem()
	}
	return web.Wrap(func(ctx *context.APIContext) {
		var theObj = reflect.New(tp).Interface() // create a new form obj for every request but not use obj directly
		errs := binding.Bind(ctx.Req, theObj)
		if len(errs) > 0 {
			ctx.Error(422, "validationError", errs[0].Error())
			return
		}
		web.SetForm(ctx, theObj)
	})
}

// Routes registers all v1 APIs routes to web application.
func Routes() *web.Route {
	var m = web.NewRoute()

	m.Use(session.Sessioner(session.Options{
		Provider:       setting.SessionConfig.Provider,
		ProviderConfig: setting.SessionConfig.ProviderConfig,
		CookieName:     setting.SessionConfig.CookieName,
		CookiePath:     setting.SessionConfig.CookiePath,
		Gclifetime:     setting.SessionConfig.Gclifetime,
		Maxlifetime:    setting.SessionConfig.Maxlifetime,
		Secure:         setting.SessionConfig.Secure,
		SameSite:       setting.SessionConfig.SameSite,
		Domain:         setting.SessionConfig.Domain,
	}))
	m.Use(securityHeaders())
	if setting.CORSConfig.Enabled {
		m.Use(cors.Handler(cors.Options{
			//Scheme:           setting.CORSConfig.Scheme, // FIXME: the cors middleware needs scheme option
			AllowedOrigins: setting.CORSConfig.AllowDomain,
			//setting.CORSConfig.AllowSubdomain // FIXME: the cors middleware needs allowSubdomain option
			AllowedMethods:   setting.CORSConfig.Methods,
			AllowCredentials: setting.CORSConfig.AllowCredentials,
			MaxAge:           int(setting.CORSConfig.MaxAge.Seconds()),
		}))
	}
	m.Use(context.APIContexter())

	if setting.EnableAccessLog {
		m.Use(context.AccessLogger())
	}

	m.Use(context.ToggleAPI(&context.ToggleOptions{
		SignInRequired: setting.Service.RequireSignInView,
	}))

	m.Group("", func() {
		// Miscellaneous
		if setting.API.EnableSwagger {
			m.Get("/swagger", func(ctx *context.APIContext) {
				ctx.Redirect("/api/swagger")
			})
		}
		m.Get("/version", misc.Version)
		m.Get("/signing-key.gpg", misc.SigningKey)
		m.Post("/markdown", bind(api.MarkdownOption{}), misc.Markdown)
		m.Post("/markdown/raw", misc.MarkdownRaw)
		m.Group("/settings", func() {
			m.Get("/ui", settings.GetGeneralUISettings)
			m.Get("/api", settings.GetGeneralAPISettings)
			m.Get("/attachment", settings.GetGeneralAttachmentSettings)
			m.Get("/repository", settings.GetGeneralRepoSettings)
		})

		// Notifications
		m.Group("/notifications", func() {
			m.Combo("").
				Get(notify.ListNotifications).
				Put(notify.ReadNotifications)
			m.Get("/new", notify.NewAvailable)
			m.Combo("/threads/{id}").
				Get(notify.GetThread).
				Patch(notify.ReadThread)
		}, reqToken())

		// Users
		m.Group("/users", func() {
			m.Get("/search", reqExploreSignIn(), user.Search)

			m.Group("/{username}", func() {
				m.Get("", reqExploreSignIn(), user.GetInfo)

				if setting.Service.EnableUserHeatmap {
					m.Get("/heatmap", user.GetUserHeatmapData)
				}

				m.Get("/repos", reqExploreSignIn(), user.ListUserRepos)
				m.Group("/tokens", func() {
					m.Combo("").Get(user.ListAccessTokens).
						Post(bind(api.CreateAccessTokenOption{}), user.CreateAccessToken)
					m.Combo("/{id}").Delete(user.DeleteAccessToken)
				}, reqBasicAuth())
			})
		})

		m.Group("/users", func() {
			m.Group("/{username}", func() {
				m.Get("/keys", user.ListPublicKeys)
				m.Get("/gpg_keys", user.ListGPGKeys)

				m.Get("/followers", user.ListFollowers)
				m.Group("/following", func() {
					m.Get("", user.ListFollowing)
					m.Get("/{target}", user.CheckFollowing)
				})

				m.Get("/starred", user.GetStarredRepos)

				m.Get("/subscriptions", user.GetWatchedRepos)
			})
		}, reqToken())

		m.Group("/user", func() {
			m.Get("", user.GetAuthenticatedUser)
			m.Combo("/emails").Get(user.ListEmails).
				Post(bind(api.CreateEmailOption{}), user.AddEmail).
				Delete(bind(api.DeleteEmailOption{}), user.DeleteEmail)

			m.Get("/followers", user.ListMyFollowers)
			m.Group("/following", func() {
				m.Get("", user.ListMyFollowing)
				m.Combo("/{username}").Get(user.CheckMyFollowing).Put(user.Follow).Delete(user.Unfollow)
			})

			m.Group("/keys", func() {
				m.Combo("").Get(user.ListMyPublicKeys).
					Post(bind(api.CreateKeyOption{}), user.CreatePublicKey)
				m.Combo("/{id}").Get(user.GetPublicKey).
					Delete(user.DeletePublicKey)
			})
			m.Group("/applications", func() {
				m.Combo("/oauth2").
					Get(user.ListOauth2Applications).
					Post(bind(api.CreateOAuth2ApplicationOptions{}), user.CreateOauth2Application)
				m.Combo("/oauth2/{id}").
					Delete(user.DeleteOauth2Application).
					Patch(bind(api.CreateOAuth2ApplicationOptions{}), user.UpdateOauth2Application).
					Get(user.GetOauth2Application)
			}, reqToken())

			m.Group("/gpg_keys", func() {
				m.Combo("").Get(user.ListMyGPGKeys).
					Post(bind(api.CreateGPGKeyOption{}), user.CreateGPGKey)
				m.Combo("/{id}").Get(user.GetGPGKey).
					Delete(user.DeleteGPGKey)
			})

			m.Combo("/repos").Get(user.ListMyRepos).
				Post(bind(api.CreateRepoOption{}), repo.Create)

			m.Group("/starred", func() {
				m.Get("", user.GetMyStarredRepos)
				m.Group("/{username}/{reponame}", func() {
					m.Get("", user.IsStarring)
					m.Put("", user.Star)
					m.Delete("", user.Unstar)
				}, repoAssignment())
			})
			m.Get("/times", repo.ListMyTrackedTimes)

			m.Get("/stopwatches", repo.GetStopwatches)

			m.Get("/subscriptions", user.GetMyWatchedRepos)

			m.Get("/teams", org.ListUserTeams)
		}, reqToken())

		// Repositories
		m.Post("/org/{org}/repos", reqToken(), bind(api.CreateRepoOption{}), repo.CreateOrgRepoDeprecated)

		m.Combo("/repositories/{id}", reqToken()).Get(repo.GetByID)

		m.Group("/repos", func() {
			m.Get("/search", repo.Search)

			m.Get("/issues/search", repo.SearchIssues)

			m.Post("/migrate", reqToken(), bind(api.MigrateRepoOptions{}), repo.Migrate)

			m.Group("/{username}/{reponame}", func() {
				m.Combo("").Get(reqAnyRepoReader(), repo.Get).
					Delete(reqToken(), reqOwner(), repo.Delete).
					Patch(reqToken(), reqAdmin(), bind(api.EditRepoOption{}), repo.Edit)
				m.Post("/transfer", reqOwner(), bind(api.TransferRepoOption{}), repo.Transfer)
				m.Combo("/notifications").
					Get(reqToken(), notify.ListRepoNotifications).
					Put(reqToken(), notify.ReadRepoNotifications)
				m.Group("/hooks/git", func() {
					m.Combo("").Get(repo.ListGitHooks)
					m.Group("/{id}", func() {
						m.Combo("").Get(repo.GetGitHook).
							Patch(bind(api.EditGitHookOption{}), repo.EditGitHook).
							Delete(repo.DeleteGitHook)
					})
				}, reqToken(), reqAdmin(), reqGitHook(), context.ReferencesGitRepo(true))
				m.Group("/hooks", func() {
					m.Combo("").Get(repo.ListHooks).
						Post(bind(api.CreateHookOption{}), repo.CreateHook)
					m.Group("/{id}", func() {
						m.Combo("").Get(repo.GetHook).
							Patch(bind(api.EditHookOption{}), repo.EditHook).
							Delete(repo.DeleteHook)
						m.Post("/tests", context.RepoRefForAPI, repo.TestHook)
					})
				}, reqToken(), reqAdmin(), reqWebhooksEnabled())
				m.Group("/collaborators", func() {
					m.Get("", reqAnyRepoReader(), repo.ListCollaborators)
					m.Combo("/{collaborator}").Get(reqAnyRepoReader(), repo.IsCollaborator).
						Put(reqAdmin(), bind(api.AddCollaboratorOption{}), repo.AddCollaborator).
						Delete(reqAdmin(), repo.DeleteCollaborator)
				}, reqToken())
				m.Group("/teams", func() {
					m.Get("", reqAnyRepoReader(), repo.ListTeams)
					m.Combo("/{team}").Get(reqAnyRepoReader(), repo.IsTeam).
						Put(reqAdmin(), repo.AddTeam).
						Delete(reqAdmin(), repo.DeleteTeam)
				}, reqToken())
				m.Get("/raw/*", context.RepoRefForAPI, reqRepoReader(models.UnitTypeCode), repo.GetRawFile)
				m.Get("/archive/*", reqRepoReader(models.UnitTypeCode), repo.GetArchive)
				m.Combo("/forks").Get(repo.ListForks).
					Post(reqToken(), reqRepoReader(models.UnitTypeCode), bind(api.CreateForkOption{}), repo.CreateFork)
				m.Group("/branches", func() {
					m.Get("", repo.ListBranches)
					m.Get("/*", repo.GetBranch)
					m.Delete("/*", context.ReferencesGitRepo(false), reqRepoWriter(models.UnitTypeCode), repo.DeleteBranch)
					m.Post("", reqRepoWriter(models.UnitTypeCode), bind(api.CreateBranchRepoOption{}), repo.CreateBranch)
				}, reqRepoReader(models.UnitTypeCode))
				m.Group("/branch_protections", func() {
					m.Get("", repo.ListBranchProtections)
					m.Post("", bind(api.CreateBranchProtectionOption{}), repo.CreateBranchProtection)
					m.Group("/{name}", func() {
						m.Get("", repo.GetBranchProtection)
						m.Patch("", bind(api.EditBranchProtectionOption{}), repo.EditBranchProtection)
						m.Delete("", repo.DeleteBranchProtection)
					})
				}, reqToken(), reqAdmin())
				m.Group("/tags", func() {
					m.Get("", repo.ListTags)
					m.Delete("/{tag}", repo.DeleteTag)
				}, reqRepoReader(models.UnitTypeCode), context.ReferencesGitRepo(true))
				m.Group("/keys", func() {
					m.Combo("").Get(repo.ListDeployKeys).
						Post(bind(api.CreateKeyOption{}), repo.CreateDeployKey)
					m.Combo("/{id}").Get(repo.GetDeployKey).
						Delete(repo.DeleteDeploykey)
				}, reqToken(), reqAdmin())
				m.Group("/times", func() {
					m.Combo("").Get(repo.ListTrackedTimesByRepository)
					m.Combo("/{timetrackingusername}").Get(repo.ListTrackedTimesByUser)
				}, mustEnableIssues, reqToken())
				m.Group("/issues", func() {
					m.Combo("").Get(repo.ListIssues).
						Post(reqToken(), mustNotBeArchived, bind(api.CreateIssueOption{}), repo.CreateIssue)
					m.Group("/comments", func() {
						m.Get("", repo.ListRepoIssueComments)
						m.Group("/{id}", func() {
							m.Combo("").
								Get(repo.GetIssueComment).
								Patch(mustNotBeArchived, reqToken(), bind(api.EditIssueCommentOption{}), repo.EditIssueComment).
								Delete(reqToken(), repo.DeleteIssueComment)
							m.Combo("/reactions").
								Get(repo.GetIssueCommentReactions).
								Post(reqToken(), bind(api.EditReactionOption{}), repo.PostIssueCommentReaction).
								Delete(reqToken(), bind(api.EditReactionOption{}), repo.DeleteIssueCommentReaction)
						})
					})
					m.Group("/{index}", func() {
						m.Combo("").Get(repo.GetIssue).
							Patch(reqToken(), bind(api.EditIssueOption{}), repo.EditIssue)
						m.Group("/comments", func() {
							m.Combo("").Get(repo.ListIssueComments).
								Post(reqToken(), mustNotBeArchived, bind(api.CreateIssueCommentOption{}), repo.CreateIssueComment)
							m.Combo("/{id}", reqToken()).Patch(bind(api.EditIssueCommentOption{}), repo.EditIssueCommentDeprecated).
								Delete(repo.DeleteIssueCommentDeprecated)
						})
						m.Group("/labels", func() {
							m.Combo("").Get(repo.ListIssueLabels).
								Post(reqToken(), bind(api.IssueLabelsOption{}), repo.AddIssueLabels).
								Put(reqToken(), bind(api.IssueLabelsOption{}), repo.ReplaceIssueLabels).
								Delete(reqToken(), repo.ClearIssueLabels)
							m.Delete("/{id}", reqToken(), repo.DeleteIssueLabel)
						})
						m.Group("/times", func() {
							m.Combo("").
								Get(repo.ListTrackedTimes).
								Post(bind(api.AddTimeOption{}), repo.AddTime).
								Delete(repo.ResetIssueTime)
							m.Delete("/{id}", repo.DeleteTime)
						}, reqToken())
						m.Combo("/deadline").Post(reqToken(), bind(api.EditDeadlineOption{}), repo.UpdateIssueDeadline)
						m.Group("/stopwatch", func() {
							m.Post("/start", reqToken(), repo.StartIssueStopwatch)
							m.Post("/stop", reqToken(), repo.StopIssueStopwatch)
							m.Delete("/delete", reqToken(), repo.DeleteIssueStopwatch)
						})
						m.Group("/subscriptions", func() {
							m.Get("", repo.GetIssueSubscribers)
							m.Get("/check", reqToken(), repo.CheckIssueSubscription)
							m.Put("/{user}", reqToken(), repo.AddIssueSubscription)
							m.Delete("/{user}", reqToken(), repo.DelIssueSubscription)
						})
						m.Combo("/reactions").
							Get(repo.GetIssueReactions).
							Post(reqToken(), bind(api.EditReactionOption{}), repo.PostIssueReaction).
							Delete(reqToken(), bind(api.EditReactionOption{}), repo.DeleteIssueReaction)
					})
				}, mustEnableIssuesOrPulls)
				m.Group("/labels", func() {
					m.Combo("").Get(repo.ListLabels).
						Post(reqToken(), reqRepoWriter(models.UnitTypeIssues, models.UnitTypePullRequests), bind(api.CreateLabelOption{}), repo.CreateLabel)
					m.Combo("/{id}").Get(repo.GetLabel).
						Patch(reqToken(), reqRepoWriter(models.UnitTypeIssues, models.UnitTypePullRequests), bind(api.EditLabelOption{}), repo.EditLabel).
						Delete(reqToken(), reqRepoWriter(models.UnitTypeIssues, models.UnitTypePullRequests), repo.DeleteLabel)
				})
				m.Post("/markdown", bind(api.MarkdownOption{}), misc.Markdown)
				m.Post("/markdown/raw", misc.MarkdownRaw)
				m.Group("/milestones", func() {
					m.Combo("").Get(repo.ListMilestones).
						Post(reqToken(), reqRepoWriter(models.UnitTypeIssues, models.UnitTypePullRequests), bind(api.CreateMilestoneOption{}), repo.CreateMilestone)
					m.Combo("/{id}").Get(repo.GetMilestone).
						Patch(reqToken(), reqRepoWriter(models.UnitTypeIssues, models.UnitTypePullRequests), bind(api.EditMilestoneOption{}), repo.EditMilestone).
						Delete(reqToken(), reqRepoWriter(models.UnitTypeIssues, models.UnitTypePullRequests), repo.DeleteMilestone)
				})
				m.Get("/stargazers", repo.ListStargazers)
				m.Get("/subscribers", repo.ListSubscribers)
				m.Group("/subscription", func() {
					m.Get("", user.IsWatching)
					m.Put("", reqToken(), user.Watch)
					m.Delete("", reqToken(), user.Unwatch)
				})
				m.Group("/releases", func() {
					m.Combo("").Get(repo.ListReleases).
						Post(reqToken(), reqRepoWriter(models.UnitTypeReleases), context.ReferencesGitRepo(false), bind(api.CreateReleaseOption{}), repo.CreateRelease)
					m.Group("/{id}", func() {
						m.Combo("").Get(repo.GetRelease).
							Patch(reqToken(), reqRepoWriter(models.UnitTypeReleases), context.ReferencesGitRepo(false), bind(api.EditReleaseOption{}), repo.EditRelease).
							Delete(reqToken(), reqRepoWriter(models.UnitTypeReleases), repo.DeleteRelease)
						m.Group("/assets", func() {
							m.Combo("").Get(repo.ListReleaseAttachments).
								Post(reqToken(), reqRepoWriter(models.UnitTypeReleases), repo.CreateReleaseAttachment)
							m.Combo("/{asset}").Get(repo.GetReleaseAttachment).
								Patch(reqToken(), reqRepoWriter(models.UnitTypeReleases), bind(api.EditAttachmentOptions{}), repo.EditReleaseAttachment).
								Delete(reqToken(), reqRepoWriter(models.UnitTypeReleases), repo.DeleteReleaseAttachment)
						})
					})
					m.Group("/tags", func() {
						m.Combo("/{tag}").
							Get(repo.GetReleaseByTag).
							Delete(reqToken(), reqRepoWriter(models.UnitTypeReleases), repo.DeleteReleaseByTag)
					})
				}, reqRepoReader(models.UnitTypeReleases))
				m.Post("/mirror-sync", reqToken(), reqRepoWriter(models.UnitTypeCode), repo.MirrorSync)
				m.Get("/editorconfig/{filename}", context.RepoRefForAPI, reqRepoReader(models.UnitTypeCode), repo.GetEditorconfig)
				m.Group("/pulls", func() {
					m.Combo("").Get(repo.ListPullRequests).
						Post(reqToken(), mustNotBeArchived, bind(api.CreatePullRequestOption{}), repo.CreatePullRequest)
					m.Group("/{index}", func() {
						m.Combo("").Get(repo.GetPullRequest).
							Patch(reqToken(), bind(api.EditPullRequestOption{}), repo.EditPullRequest)
						m.Get(".diff", repo.DownloadPullDiff)
						m.Get(".patch", repo.DownloadPullPatch)
						m.Post("/update", reqToken(), repo.UpdatePullRequest)
						m.Combo("/merge").Get(repo.IsPullRequestMerged).
							Post(reqToken(), mustNotBeArchived, bind(auth.MergePullRequestForm{}), repo.MergePullRequest)
						m.Group("/reviews", func() {
							m.Combo("").
								Get(repo.ListPullReviews).
								Post(reqToken(), bind(api.CreatePullReviewOptions{}), repo.CreatePullReview)
							m.Group("/{id}", func() {
								m.Combo("").
									Get(repo.GetPullReview).
									Delete(reqToken(), repo.DeletePullReview).
									Post(reqToken(), bind(api.SubmitPullReviewOptions{}), repo.SubmitPullReview)
								m.Combo("/comments").
									Get(repo.GetPullReviewComments)
								m.Post("/dismissals", reqToken(), bind(api.DismissPullReviewOptions{}), repo.DismissPullReview)
								m.Post("/undismissals", reqToken(), repo.UnDismissPullReview)
							})
						})
						m.Combo("/requested_reviewers").
							Delete(reqToken(), bind(api.PullReviewRequestOptions{}), repo.DeleteReviewRequests).
							Post(reqToken(), bind(api.PullReviewRequestOptions{}), repo.CreateReviewRequests)
					})
				}, mustAllowPulls, reqRepoReader(models.UnitTypeCode), context.ReferencesGitRepo(false))
				m.Group("/statuses", func() {
					m.Combo("/{sha}").Get(repo.GetCommitStatuses).
						Post(reqToken(), bind(api.CreateStatusOption{}), repo.NewCommitStatus)
				}, reqRepoReader(models.UnitTypeCode))
				m.Group("/commits", func() {
					m.Get("", repo.GetAllCommits)
					m.Group("/{ref}", func() {
						m.Get("/status", repo.GetCombinedCommitStatusByRef)
						m.Get("/statuses", repo.GetCommitStatusesByRef)
					})
				}, reqRepoReader(models.UnitTypeCode))
				m.Group("/git", func() {
					m.Group("/commits", func() {
						m.Get("/{sha}", repo.GetSingleCommit)
					})
					m.Get("/refs", repo.GetGitAllRefs)
					m.Get("/refs/*", repo.GetGitRefs)
					m.Get("/trees/{sha}", context.RepoRefForAPI, repo.GetTree)
					m.Get("/blobs/{sha}", context.RepoRefForAPI, repo.GetBlob)
					m.Get("/tags/{sha}", context.RepoRefForAPI, repo.GetTag)
				}, reqRepoReader(models.UnitTypeCode))
				m.Group("/contents", func() {
					m.Get("", repo.GetContentsList)
					m.Get("/*", repo.GetContents)
					m.Group("/*", func() {
						m.Post("", bind(api.CreateFileOptions{}), repo.CreateFile)
						m.Put("", bind(api.UpdateFileOptions{}), repo.UpdateFile)
						m.Delete("", bind(api.DeleteFileOptions{}), repo.DeleteFile)
					}, reqRepoWriter(models.UnitTypeCode), reqToken())
				}, reqRepoReader(models.UnitTypeCode))
				m.Get("/signing-key.gpg", misc.SigningKey)
				m.Group("/topics", func() {
					m.Combo("").Get(repo.ListTopics).
						Put(reqToken(), reqAdmin(), bind(api.RepoTopicOptions{}), repo.UpdateTopics)
					m.Group("/{topic}", func() {
						m.Combo("").Put(reqToken(), repo.AddTopic).
							Delete(reqToken(), repo.DeleteTopic)
					}, reqAdmin())
				}, reqAnyRepoReader())
				m.Get("/issue_templates", context.ReferencesGitRepo(false), repo.GetIssueTemplates)
				m.Get("/languages", reqRepoReader(models.UnitTypeCode), repo.GetLanguages)
			}, repoAssignment())
		})

		// Organizations
		m.Get("/user/orgs", reqToken(), org.ListMyOrgs)
		m.Get("/users/{username}/orgs", org.ListUserOrgs)
		m.Post("/orgs", reqToken(), bind(api.CreateOrgOption{}), org.Create)
		m.Get("/orgs", org.GetAll)
		m.Group("/orgs/{org}", func() {
			m.Combo("").Get(org.Get).
				Patch(reqToken(), reqOrgOwnership(), bind(api.EditOrgOption{}), org.Edit).
				Delete(reqToken(), reqOrgOwnership(), org.Delete)
			m.Combo("/repos").Get(user.ListOrgRepos).
				Post(reqToken(), bind(api.CreateRepoOption{}), repo.CreateOrgRepo)
			m.Group("/members", func() {
				m.Get("", org.ListMembers)
				m.Combo("/{username}").Get(org.IsMember).
					Delete(reqToken(), reqOrgOwnership(), org.DeleteMember)
			})
			m.Group("/public_members", func() {
				m.Get("", org.ListPublicMembers)
				m.Combo("/{username}").Get(org.IsPublicMember).
					Put(reqToken(), reqOrgMembership(), org.PublicizeMember).
					Delete(reqToken(), reqOrgMembership(), org.ConcealMember)
			})
			m.Group("/teams", func() {
				m.Get("", org.ListTeams)
				m.Post("", reqOrgOwnership(), bind(api.CreateTeamOption{}), org.CreateTeam)
				m.Get("/search", org.SearchTeam)
			}, reqToken(), reqOrgMembership())
			m.Group("/labels", func() {
				m.Get("", org.ListLabels)
				m.Post("", reqToken(), reqOrgOwnership(), bind(api.CreateLabelOption{}), org.CreateLabel)
				m.Combo("/{id}").Get(org.GetLabel).
					Patch(reqToken(), reqOrgOwnership(), bind(api.EditLabelOption{}), org.EditLabel).
					Delete(reqToken(), reqOrgOwnership(), org.DeleteLabel)
			})
			m.Group("/hooks", func() {
				m.Combo("").Get(org.ListHooks).
					Post(bind(api.CreateHookOption{}), org.CreateHook)
				m.Combo("/{id}").Get(org.GetHook).
					Patch(bind(api.EditHookOption{}), org.EditHook).
					Delete(org.DeleteHook)
			}, reqToken(), reqOrgOwnership(), reqWebhooksEnabled())
		}, orgAssignment(true))
		m.Group("/teams/{teamid}", func() {
			m.Combo("").Get(org.GetTeam).
				Patch(reqOrgOwnership(), bind(api.EditTeamOption{}), org.EditTeam).
				Delete(reqOrgOwnership(), org.DeleteTeam)
			m.Group("/members", func() {
				m.Get("", org.GetTeamMembers)
				m.Combo("/{username}").
					Get(org.GetTeamMember).
					Put(reqOrgOwnership(), org.AddTeamMember).
					Delete(reqOrgOwnership(), org.RemoveTeamMember)
			})
			m.Group("/repos", func() {
				m.Get("", org.GetTeamRepos)
				m.Combo("/{org}/{reponame}").
					Put(org.AddTeamRepository).
					Delete(org.RemoveTeamRepository)
			})
		}, orgAssignment(false, true), reqToken(), reqTeamMembership())

		m.Group("/admin", func() {
			m.Group("/cron", func() {
				m.Get("", admin.ListCronTasks)
				m.Post("/{task}", admin.PostCronTask)
			})
			m.Get("/orgs", admin.GetAllOrgs)
			m.Group("/users", func() {
				m.Get("", admin.GetAllUsers)
				m.Post("", bind(api.CreateUserOption{}), admin.CreateUser)
				m.Group("/{username}", func() {
					m.Combo("").Patch(bind(api.EditUserOption{}), admin.EditUser).
						Delete(admin.DeleteUser)
					m.Group("/keys", func() {
						m.Post("", bind(api.CreateKeyOption{}), admin.CreatePublicKey)
						m.Delete("/{id}", admin.DeleteUserPublicKey)
					})
					m.Get("/orgs", org.ListUserOrgs)
					m.Post("/orgs", bind(api.CreateOrgOption{}), admin.CreateOrg)
					m.Post("/repos", bind(api.CreateRepoOption{}), admin.CreateRepo)
				})
			})
			m.Group("/unadopted", func() {
				m.Get("", admin.ListUnadoptedRepositories)
				m.Post("/{username}/{reponame}", admin.AdoptRepository)
				m.Delete("/{username}/{reponame}", admin.DeleteUnadoptedRepository)
			})
		}, reqToken(), reqSiteAdmin())

		m.Group("/topics", func() {
			m.Get("/search", repo.TopicSearch)
		})
	}, sudo())

	return m
}

func securityHeaders() func(http.Handler) http.Handler {
	return func(next http.Handler) http.Handler {
		return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
			// CORB: https://www.chromium.org/Home/chromium-security/corb-for-developers
			// http://stackoverflow.com/a/3146618/244009
			resp.Header().Set("x-content-type-options", "nosniff")
			next.ServeHTTP(resp, req)
		})
	}
}