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sitemap.go
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sitemap.go
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/*
* Copyright © 2018-2019 A Bunch Tell LLC.
*
* This file is part of WriteFreely.
*
* WriteFreely is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, included
* in the LICENSE file in this source code package.
*/
package writefreely
import (
"fmt"
"github.com/gorilla/mux"
"github.com/ikeikeikeike/go-sitemap-generator/stm"
"github.com/writeas/web-core/log"
"net/http"
"time"
)
func buildSitemap(host, alias string) *stm.Sitemap {
sm := stm.NewSitemap()
sm.SetDefaultHost(host)
if alias != "/" {
sm.SetSitemapsPath(alias)
}
sm.Create()
// Note: Do not call `sm.Finalize()` because it flushes
// the underlying datastructure from memory to disk.
return sm
}
func handleViewSitemap(app *App, w http.ResponseWriter, r *http.Request) error {
vars := mux.Vars(r)
// Determine canonical blog URL
alias := vars["collection"]
subdomain := vars["subdomain"]
isSubdomain := subdomain != ""
if isSubdomain {
alias = subdomain
}
host := fmt.Sprintf("%s/%s/", app.cfg.App.Host, alias)
var c *Collection
var err error
pre := "/"
if app.cfg.App.SingleUser {
c, err = app.db.GetCollectionByID(1)
} else {
c, err = app.db.GetCollection(alias)
}
if err != nil {
return err
}
c.hostName = app.cfg.App.Host
if !isSubdomain {
pre += alias + "/"
}
host = c.CanonicalURL()
sm := buildSitemap(host, pre)
posts, err := app.db.GetPosts(c, 0, false, false, false)
if err != nil {
log.Error("Error getting posts: %v", err)
return err
}
lastSiteMod := time.Now()
for i, p := range *posts {
if i == 0 {
lastSiteMod = p.Updated
}
u := stm.URL{
"loc": p.Slug.String,
"changefreq": "weekly",
"mobile": true,
"lastmod": p.Updated,
}
if len(p.Images) > 0 {
imgs := []stm.URL{}
for _, i := range p.Images {
imgs = append(imgs, stm.URL{"loc": i, "title": ""})
}
u["image"] = imgs
}
sm.Add(u)
}
// Add top URL
sm.Add(stm.URL{
"loc": pre,
"changefreq": "daily",
"priority": "1.0",
"lastmod": lastSiteMod,
})
w.Write(sm.XMLContent())
return nil
}

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