/
handler.go
197 lines (177 loc) · 5.53 KB
/
handler.go
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package brooklet
import (
"github.com/gorilla/mux"
"github.com/hygerth/brooklet/db"
"github.com/hygerth/brooklet/skywalker"
"github.com/hygerth/brooklet/structure"
"github.com/hygerth/brooklet/utils"
"encoding/xml"
"fmt"
"html/template"
"net/http"
"strings"
"time"
)
const xslLocation = "/static/xsl/"
var viewheaders = map[string]string{
"feed": "<?xml-stylesheet type=\"text/xsl\" href=\"_xslfile_\"?><!DOCTYPE page SYSTEM \"/static/dtd/page.dtd\">",
"home": "<?xml-stylesheet type=\"text/xsl\" href=\"_xslfile_\"?><!DOCTYPE page SYSTEM \"/static/dtd/page.dtd\">",
"settings": "<?xml-stylesheet type=\"text/xsl\" href=\"_xslfile_\"?><!DOCTYPE page SYSTEM \"/static/dtd/page.dtd\">",
}
type Page struct {
XMLName xml.Name `xml:"page"`
Navigation Navigation `xml:"navigation,omitempty"`
Content Content `xml:"content,omitempty"`
Subscriptions []Subscription `xml:"subscription,omitempty"`
Filter []string `xml:"filter,omitempty"`
}
type Content struct {
Title string `xml:"title,attr"`
Entries []structure.Entry `xml:"entry,omitempty"`
}
type Subscription struct {
Title string `xml:"title,omitempty"`
ID string `xml:"id,omitempty"`
URL string `xml:"url,omitempty"`
}
type Article struct {
Article interface{}
Content interface{}
}
func homeHandler(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, xml.Header)
ismobile := utils.IsMobile(r.Header)
xmlheader, err := buildXMLHeader("home", ismobile)
utils.Checkerr(err)
fmt.Fprintf(w, "%s", xmlheader)
enc := xml.NewEncoder(w)
p := buildBasicPage()
enc.Encode(p)
}
func latestHandler(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, xml.Header)
ismobile := utils.IsMobile(r.Header)
xmlheader, err := buildXMLHeader("feed", ismobile)
utils.Checkerr(err)
fmt.Fprintf(w, "%s", xmlheader)
enc := xml.NewEncoder(w)
var p Page
nav := buildNavigation()
p.Navigation = nav
c, _ := cache.Get("all")
content := Content{Title: "Latest", Entries: c.Entries}
p.Content = content
enc.Encode(p)
}
func settingsHandler(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, xml.Header)
ismobile := utils.IsMobile(r.Header)
xmlheader, err := buildXMLHeader("settings", ismobile)
utils.Checkerr(err)
fmt.Fprintf(w, "%s", xmlheader)
enc := xml.NewEncoder(w)
p := buildBasicPage()
enc.Encode(p)
}
func buildBasicPage() Page {
var p Page
nav := buildNavigation()
p.Navigation = nav
subscriptions := buildSubscriptions()
p.Subscriptions = subscriptions
filter := buildFilter()
p.Filter = filter
return p
}
func addFeedHandler(w http.ResponseWriter, r *http.Request) {
err := r.ParseForm()
utils.Checkerr(err)
feed := r.Form["feed"][0]
go func(feed string) {
newfeed, _ := db.AddFeed(feed)
skywalker.UpdateFeed(newfeed)
cache.Empty()
}(feed)
time.Sleep(4 * time.Second)
http.Redirect(w, r, "/settings", http.StatusFound)
}
func removeFeedHandler(w http.ResponseWriter, r *http.Request) {
err := r.ParseForm()
utils.Checkerr(err)
feed := r.Form["feed"][0]
err = db.RemoveFeed(feed)
utils.Checkerr(err)
cache.Empty()
http.Redirect(w, r, "/settings", http.StatusFound)
}
func addFilterHandler(w http.ResponseWriter, r *http.Request) {
err := r.ParseForm()
utils.Checkerr(err)
filter := r.Form["filter"][0]
db.AddFilter(filter)
cache.Empty()
http.Redirect(w, r, "/settings", http.StatusFound)
}
func removeFilterHandler(w http.ResponseWriter, r *http.Request) {
err := r.ParseForm()
utils.Checkerr(err)
filter := r.Form["filter"][0]
err = db.RemoveFilter(filter)
utils.Checkerr(err)
cache.Empty()
http.Redirect(w, r, "/settings", http.StatusFound)
}
func articleHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
id := vars["id"]
article, _ := db.GetEntryByArticleID(id)
c := template.HTML(article.Content)
p := &Article{Article: article, Content: c}
path, _ := utils.GetPath()
t := template.Must(template.New("article.tmpl").ParseFiles(path + "/layouts/article.tmpl"))
t.Execute(w, p)
}
func feedHandler(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, xml.Header)
ismobile := utils.IsMobile(r.Header)
xmlheader, err := buildXMLHeader("feed", ismobile)
utils.Checkerr(err)
fmt.Fprintf(w, "%s", xmlheader)
enc := xml.NewEncoder(w)
vars := mux.Vars(r)
name := vars["name"]
var p Page
nav := buildNavigation()
p.Navigation = nav
c, _ := cache.Get(name)
content := Content{Title: c.Title, Entries: c.Entries}
p.Content = content
enc.Encode(p)
}
func buildSubscriptions() []Subscription {
var subscriptions []Subscription
feeds, _ := db.GetAllFeeds()
for _, feed := range feeds {
subscription := Subscription{Title: feed.Title, ID: feed.Name, URL: feed.URL}
subscriptions = append(subscriptions, subscription)
}
return subscriptions
}
func buildFilter() []string {
var filter []string
allfilters, _ := db.GetFilter()
for _, f := range allfilters {
filter = append(filter, f.Filter)
}
return filter
}
func buildXMLHeader(view string, isMobile bool) (string, error) {
i, ok := viewheaders[view]
if !ok {
return "", fmt.Errorf("brooklet: Could not find a header for view '%s'", view)
}
if isMobile {
view = view + "-mobile"
}
return strings.Replace(i, "_xslfile_", xslLocation + view + ".xsl", 1), nil
}