Move macaron to chi (#14293)

Use [chi](https://github.com/go-chi/chi) instead of the forked [macaron](https://gitea.com/macaron/macaron). Since macaron and chi have conflicts with session share, this big PR becomes a have-to thing. According my previous idea, we can replace macaron step by step but I'm wrong. :( Below is a list of big changes on this PR.

- [x] Define `context.ResponseWriter` interface with an implementation `context.Response`.
- [x] Use chi instead of macaron, and also a customize `Route` to wrap chi so that the router usage is similar as before.
- [x] Create different routers for `web`, `api`, `internal` and `install` so that the codes will be more clear and no magic .
- [x] Use https://github.com/unrolled/render instead of macaron's internal render
- [x] Use https://github.com/NYTimes/gziphandler instead of https://gitea.com/macaron/gzip
- [x] Use https://gitea.com/go-chi/session which is a modified version of https://gitea.com/macaron/session and removed `nodb` support since it will not be maintained. **BREAK**
- [x] Use https://gitea.com/go-chi/captcha which is a modified version of https://gitea.com/macaron/captcha
- [x] Use https://gitea.com/go-chi/cache which is a modified version of https://gitea.com/macaron/cache
- [x] Use https://gitea.com/go-chi/binding which is a modified version of https://gitea.com/macaron/binding
- [x] Use https://github.com/go-chi/cors instead of https://gitea.com/macaron/cors
- [x] Dropped https://gitea.com/macaron/i18n and make a new one in `code.gitea.io/gitea/modules/translation`
- [x] Move validation form structs from `code.gitea.io/gitea/modules/auth` to `code.gitea.io/gitea/modules/forms` to avoid dependency cycle.
- [x] Removed macaron log service because it's not need any more. **BREAK**
- [x] All form structs have to be get by `web.GetForm(ctx)` in the route function but not as a function parameter on routes definition.
- [x] Move Git HTTP protocol implementation to use routers directly.
- [x] Fix the problem that chi routes don't support trailing slash but macaron did.
- [x] `/api/v1/swagger` now will be redirect to `/api/swagger` but not render directly so that `APIContext` will not create a html render. 

Notices:
- Chi router don't support request with trailing slash
- Integration test `TestUserHeatmap` maybe mysql version related. It's failed on my macOS(mysql 5.7.29 installed via brew) but succeed on CI.

Co-authored-by: 6543 <6543@obermui.de>

4 files changed, 24 insertions, 12 deletions

diff --git a/routers/org/org.go b/routers/org/org.go
index 85bc25217b..98a327a97e 100644
--- a/routers/org/org.go
+++ b/routers/org/org.go
@@ -9,11 +9,12 @@ import (
 	"errors"
 
 	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/modules/auth"
 	"code.gitea.io/gitea/modules/base"
 	"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"
+	"code.gitea.io/gitea/modules/web"
 )
 
 const (
@@ -33,7 +34,8 @@ func Create(ctx *context.Context) {
 }
 
 // CreatePost response for create organization
-func CreatePost(ctx *context.Context, form auth.CreateOrgForm) {
+func CreatePost(ctx *context.Context) {
+	form := *web.GetForm(ctx).(*auth.CreateOrgForm)
 	ctx.Data["Title"] = ctx.Tr("new_org")
 
 	if !ctx.User.CanCreateOrganization() {
diff --git a/routers/org/org_labels.go b/routers/org/org_labels.go
index e5b9d9ddee..554f86c964 100644
--- a/routers/org/org_labels.go
+++ b/routers/org/org_labels.go
@@ -6,8 +6,9 @@ package org
 
 import (
 	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/modules/auth"
 	"code.gitea.io/gitea/modules/context"
+	auth "code.gitea.io/gitea/modules/forms"
+	"code.gitea.io/gitea/modules/web"
 )
 
 // RetrieveLabels find all the labels of an organization
@@ -26,7 +27,8 @@ func RetrieveLabels(ctx *context.Context) {
 }
 
 // NewLabel create new label for organization
-func NewLabel(ctx *context.Context, form auth.CreateLabelForm) {
+func NewLabel(ctx *context.Context) {
+	form := web.GetForm(ctx).(*auth.CreateLabelForm)
 	ctx.Data["Title"] = ctx.Tr("repo.labels")
 	ctx.Data["PageIsLabels"] = true
 
@@ -50,7 +52,8 @@ func NewLabel(ctx *context.Context, form auth.CreateLabelForm) {
 }
 
 // UpdateLabel update a label's name and color
-func UpdateLabel(ctx *context.Context, form auth.CreateLabelForm) {
+func UpdateLabel(ctx *context.Context) {
+	form := web.GetForm(ctx).(*auth.CreateLabelForm)
 	l, err := models.GetLabelInOrgByID(ctx.Org.Organization.ID, form.ID)
 	if err != nil {
 		switch {
@@ -86,7 +89,8 @@ func DeleteLabel(ctx *context.Context) {
 }
 
 // InitializeLabels init labels for an organization
-func InitializeLabels(ctx *context.Context, form auth.InitializeLabelsForm) {
+func InitializeLabels(ctx *context.Context) {
+	form := web.GetForm(ctx).(*auth.InitializeLabelsForm)
 	if ctx.HasError() {
 		ctx.Redirect(ctx.Repo.RepoLink + "/labels")
 		return
diff --git a/routers/org/setting.go b/routers/org/setting.go
index 05075ca820..ac12066258 100644
--- a/routers/org/setting.go
+++ b/routers/org/setting.go
@@ -9,11 +9,12 @@ import (
 	"strings"
 
 	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/modules/auth"
 	"code.gitea.io/gitea/modules/base"
 	"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"
+	"code.gitea.io/gitea/modules/web"
 	userSetting "code.gitea.io/gitea/routers/user/setting"
 )
 
@@ -38,7 +39,8 @@ func Settings(ctx *context.Context) {
 }
 
 // SettingsPost response for settings change submited
-func SettingsPost(ctx *context.Context, form auth.UpdateOrgSettingForm) {
+func SettingsPost(ctx *context.Context) {
+	form := web.GetForm(ctx).(*auth.UpdateOrgSettingForm)
 	ctx.Data["Title"] = ctx.Tr("org.settings")
 	ctx.Data["PageIsSettingsOptions"] = true
 	ctx.Data["CurrentVisibility"] = ctx.Org.Organization.Visibility
@@ -115,7 +117,8 @@ func SettingsPost(ctx *context.Context, form auth.UpdateOrgSettingForm) {
 }
 
 // SettingsAvatar response for change avatar on settings page
-func SettingsAvatar(ctx *context.Context, form auth.AvatarForm) {
+func SettingsAvatar(ctx *context.Context) {
+	form := web.GetForm(ctx).(*auth.AvatarForm)
 	form.Source = auth.AvatarLocal
 	if err := userSetting.UpdateAvatarSetting(ctx, form, ctx.Org.Organization); err != nil {
 		ctx.Flash.Error(err.Error())
diff --git a/routers/org/teams.go b/routers/org/teams.go
index fa98add601..cfa49d4e97 100644
--- a/routers/org/teams.go
+++ b/routers/org/teams.go
@@ -11,10 +11,11 @@ import (
 	"strings"
 
 	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/modules/auth"
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/context"
+	auth "code.gitea.io/gitea/modules/forms"
 	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/web"
 	"code.gitea.io/gitea/routers/utils"
 )
 
@@ -186,7 +187,8 @@ func NewTeam(ctx *context.Context) {
 }
 
 // NewTeamPost response for create new team
-func NewTeamPost(ctx *context.Context, form auth.CreateTeamForm) {
+func NewTeamPost(ctx *context.Context) {
+	form := web.GetForm(ctx).(*auth.CreateTeamForm)
 	ctx.Data["Title"] = ctx.Org.Organization.FullName
 	ctx.Data["PageIsOrgTeams"] = true
 	ctx.Data["PageIsOrgTeamsNew"] = true
@@ -274,7 +276,8 @@ func EditTeam(ctx *context.Context) {
 }
 
 // EditTeamPost response for modify team information
-func EditTeamPost(ctx *context.Context, form auth.CreateTeamForm) {
+func EditTeamPost(ctx *context.Context) {
+	form := web.GetForm(ctx).(*auth.CreateTeamForm)
 	t := ctx.Org.Team
 	ctx.Data["Title"] = ctx.Org.Organization.FullName
 	ctx.Data["PageIsOrgTeams"] = true