warehost/cmd/warehost-web/handler.go

package main

import (
	"fmt"
	"net/http"
	"os"
	"text/template"

	"github.com/microcosm-cc/bluemonday"
	"github.com/russross/blackfriday"

	liblog "dev.sum7.eu/sum7/warehost/lib/log"
	web "dev.sum7.eu/sum7/warehost/modul/web"
)

//ProxyHost if this server is behind a proxy
const ProxyHost = "X-Real-Host"

func getWebsite(host string) *web.Website {
	website := &web.Website{}
	dbconnection.Model(website).Joins("JOIN web_domain ON  web_domain.website = web_website.id").Where("web_domain.name = ?", host).First(website)
	return website
}

func handlerstatic(w http.ResponseWriter, r *http.Request) {
	host := r.Header.Get(ProxyHost)
	if len(host) <= 1 {
		host = r.Host
	}
	website := getWebsite(host)

	path := fmt.Sprintf("%s/%d/%s/%s", config.Webroot, website.ID, "static", r.URL.Path)
	if f, err := os.Stat(path); err == nil && !f.IsDir() {
		http.ServeFile(w, r, path)
		return
	}

	http.NotFound(w, r)
}
func handlerfiles(w http.ResponseWriter, r *http.Request) {
	host := r.Header.Get(ProxyHost)
	if len(host) <= 1 {
		host = r.Host
	}
	website := getWebsite(host)

	path := fmt.Sprintf("%s/%d/%s/%s", config.Webroot, website.ID, "files", r.URL.Path)
	if f, err := os.Stat(path); err == nil && !f.IsDir() {
		http.ServeFile(w, r, path)
		return
	}

	http.NotFound(w, r)
}

func handlerfunc(w http.ResponseWriter, r *http.Request) {
	host := r.Header.Get(ProxyHost)
	if len(host) <= 1 {
		host = r.Host
	}
	url := r.URL.Path[1:]
	logger := liblog.NewModulLog(host).GetLog(r, url)
	website := getWebsite(host)
	logger = logger.WithField("hID", website.ID)

	var menus []*web.Menu
	dbconnection.Where("website = ?", website.ID).Preload("Menu").Order("position").Find(&menus)
	var menu *web.Menu
	for _, item := range menus {
		if item.Shorturl == "" && menu == nil {
			menu = item
		}
		if item.Shorturl == url {
			menu = item
		}
	}
	menus = web.BuildMenuTree(menus)
	page := &web.Page{WebsiteID: website.ID, MenuID: menu.ID}
	dbconnection.Where(page).Find(page)

	unsafe := blackfriday.MarkdownCommon([]byte(page.Content))
	page.Content = string(bluemonday.UGCPolicy().SanitizeBytes(unsafe))
	i := TemplateInfo{
		Website: website,
		Host:    host,
		URL:     url,
		Page:    page,
		Menu:    menus,
	}
	t, err := template.ParseGlob(fmt.Sprintf("%s/%d/%s/%s", config.Webroot, website.ID, "tmpl", "*.tmpl"))
	logger.Info("done")
	if err != nil {
		w.Write([]byte(fmt.Sprintf("<h1>Error on rendering Template</h1>\n%s", err)))
	} else {
		t.Execute(w, i)
	}
}