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// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package web
import (
"net/http"
"strings"
"code.gitea.io/gitea/modules/web/middleware"
"gitea.com/go-chi/binding"
"github.com/go-chi/chi/v5"
)
// Bind binding an obj to a handler's context data
func Bind[T any](_ T) http.HandlerFunc {
return func(resp http.ResponseWriter, req *http.Request) {
theObj := new(T) // create a new form obj for every request but not use obj directly
data := middleware.GetContextData(req.Context())
binding.Bind(req, theObj)
SetForm(data, theObj)
middleware.AssignForm(theObj, data)
}
}
// SetForm set the form object
func SetForm(dataStore middleware.ContextDataStore, obj interface{}) {
dataStore.GetData()["__form"] = obj
}
// GetForm returns the validate form information
func GetForm(dataStore middleware.ContextDataStore) interface{} {
return dataStore.GetData()["__form"]
}
// Route defines a route based on chi's router
type Route struct {
R chi.Router
curGroupPrefix string
curMiddlewares []interface{}
}
// NewRoute creates a new route
func NewRoute() *Route {
r := chi.NewRouter()
return &Route{R: r}
}
// Use supports two middlewares
func (r *Route) Use(middlewares ...interface{}) {
for _, m := range middlewares {
r.R.Use(toHandlerProvider(m))
}
}
// Group mounts a sub-Router along a `pattern` string.
func (r *Route) Group(pattern string, fn func(), middlewares ...interface{}) {
previousGroupPrefix := r.curGroupPrefix
previousMiddlewares := r.curMiddlewares
r.curGroupPrefix += pattern
r.curMiddlewares = append(r.curMiddlewares, middlewares...)
fn()
r.curGroupPrefix = previousGroupPrefix
r.curMiddlewares = previousMiddlewares
}
func (r *Route) getPattern(pattern string) string {
newPattern := r.curGroupPrefix + pattern
if !strings.HasPrefix(newPattern, "/") {
newPattern = "/" + newPattern
}
if newPattern == "/" {
return newPattern
}
return strings.TrimSuffix(newPattern, "/")
}
func (r *Route) wrapMiddlewareAndHandler(h []any) ([]func(http.Handler) http.Handler, http.HandlerFunc) {
handlerProviders := make([]func(http.Handler) http.Handler, 0, len(r.curMiddlewares)+len(h))
for _, m := range r.curMiddlewares {
handlerProviders = append(handlerProviders, toHandlerProvider(m))
}
for _, m := range h {
handlerProviders = append(handlerProviders, toHandlerProvider(m))
}
middlewares := handlerProviders[:len(handlerProviders)-1]
handlerFunc := handlerProviders[len(handlerProviders)-1](nil).ServeHTTP
return middlewares, handlerFunc
}
func (r *Route) Methods(method, pattern string, h []any) {
middlewares, handlerFunc := r.wrapMiddlewareAndHandler(h)
fullPattern := r.getPattern(pattern)
if strings.Contains(method, ",") {
methods := strings.Split(method, ",")
for _, method := range methods {
r.R.With(middlewares...).Method(strings.TrimSpace(method), fullPattern, handlerFunc)
}
} else {
r.R.With(middlewares...).Method(method, fullPattern, handlerFunc)
}
}
// Mount attaches another Route along ./pattern/*
func (r *Route) Mount(pattern string, subR *Route) {
subR.Use(r.curMiddlewares...)
r.R.Mount(r.getPattern(pattern), subR.R)
}
// Any delegate requests for all methods
func (r *Route) Any(pattern string, h ...interface{}) {
middlewares, handlerFunc := r.wrapMiddlewareAndHandler(h)
r.R.With(middlewares...).HandleFunc(r.getPattern(pattern), handlerFunc)
}
// RouteMethods delegate special methods, it is an alias of "Methods", while the "pattern" is the first parameter
func (r *Route) RouteMethods(pattern, methods string, h ...interface{}) {
r.Methods(methods, pattern, h)
}
// Delete delegate delete method
func (r *Route) Delete(pattern string, h ...interface{}) {
r.Methods("DELETE", pattern, h)
}
// Get delegate get method
func (r *Route) Get(pattern string, h ...interface{}) {
r.Methods("GET", pattern, h)
}
// GetOptions delegate get and options method
func (r *Route) GetOptions(pattern string, h ...interface{}) {
r.Methods("GET,OPTIONS", pattern, h)
}
// PostOptions delegate post and options method
func (r *Route) PostOptions(pattern string, h ...interface{}) {
r.Methods("POST,OPTIONS", pattern, h)
}
// Head delegate head method
func (r *Route) Head(pattern string, h ...interface{}) {
r.Methods("HEAD", pattern, h)
}
// Post delegate post method
func (r *Route) Post(pattern string, h ...interface{}) {
r.Methods("POST", pattern, h)
}
// Put delegate put method
func (r *Route) Put(pattern string, h ...interface{}) {
r.Methods("PUT", pattern, h)
}
// Patch delegate patch method
func (r *Route) Patch(pattern string, h ...interface{}) {
r.Methods("PATCH", pattern, h)
}
// ServeHTTP implements http.Handler
func (r *Route) ServeHTTP(w http.ResponseWriter, req *http.Request) {
r.R.ServeHTTP(w, req)
}
// NotFound defines a handler to respond whenever a route could not be found.
func (r *Route) NotFound(h http.HandlerFunc) {
r.R.NotFound(h)
}
// Combo delegates requests to Combo
func (r *Route) Combo(pattern string, h ...interface{}) *Combo {
return &Combo{r, pattern, h}
}
// Combo represents a tiny group routes with same pattern
type Combo struct {
r *Route
pattern string
h []interface{}
}
// Get delegates Get method
func (c *Combo) Get(h ...interface{}) *Combo {
c.r.Get(c.pattern, append(c.h, h...)...)
return c
}
// Post delegates Post method
func (c *Combo) Post(h ...interface{}) *Combo {
c.r.Post(c.pattern, append(c.h, h...)...)
return c
}
// Delete delegates Delete method
func (c *Combo) Delete(h ...interface{}) *Combo {
c.r.Delete(c.pattern, append(c.h, h...)...)
return c
}
// Put delegates Put method
func (c *Combo) Put(h ...interface{}) *Combo {
c.r.Put(c.pattern, append(c.h, h...)...)
return c
}
// Patch delegates Patch method
func (c *Combo) Patch(h ...interface{}) *Combo {
c.r.Patch(c.pattern, append(c.h, h...)...)
return c
}
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