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mycorrhiza/web/history.go
2021-05-11 13:33:00 +05:00

80 lines
2.5 KiB
Go

package web
import (
"fmt"
"log"
"net/http"
"strconv"
"strings"
"github.com/bouncepaw/mycorrhiza/history"
"github.com/bouncepaw/mycorrhiza/user"
"github.com/bouncepaw/mycorrhiza/util"
"github.com/bouncepaw/mycorrhiza/views"
)
func initHistory() {
http.HandleFunc("/history/", handlerHistory)
http.HandleFunc("/recent-changes/", handlerRecentChanges)
http.HandleFunc("/recent-changes-rss", handlerRecentChangesRSS)
http.HandleFunc("/recent-changes-atom", handlerRecentChangesAtom)
http.HandleFunc("/recent-changes-json", handlerRecentChangesJSON)
}
// handlerHistory lists all revisions of a hypha.
func handlerHistory(w http.ResponseWriter, rq *http.Request) {
util.PrepareRq(rq)
hyphaName := util.HyphaNameFromRq(rq, "history")
var list string
// History can be found for files that do not exist anymore.
revs, err := history.Revisions(hyphaName)
if err == nil {
list = history.HistoryWithRevisions(hyphaName, revs)
}
log.Println("Found", len(revs), "revisions for", hyphaName)
util.HTTP200Page(w,
views.BaseHTML(hyphaName, views.HistoryHTML(rq, hyphaName, list), user.FromRequest(rq)))
}
// handlerRecentChanges displays the /recent-changes/ page.
func handlerRecentChanges(w http.ResponseWriter, rq *http.Request) {
util.PrepareRq(rq)
var (
noPrefix = strings.TrimPrefix(rq.URL.String(), "/recent-changes/")
n, err = strconv.Atoi(noPrefix)
)
if err == nil && n < 101 {
util.HTTP200Page(w, views.BaseHTML(strconv.Itoa(n)+" recent changes", views.RecentChangesHTML(n), user.FromRequest(rq)))
} else {
http.Redirect(w, rq, "/recent-changes/20", http.StatusSeeOther)
}
}
// genericHandlerOfFeeds is a helper function for the web feed handlers.
func genericHandlerOfFeeds(w http.ResponseWriter, rq *http.Request, f func() (string, error), name string) {
util.PrepareRq(rq)
if content, err := f(); err != nil {
w.Header().Set("Content-Type", "text/plain;charset=utf-8")
w.WriteHeader(http.StatusInternalServerError)
fmt.Fprint(w, "An error while generating "+name+": "+err.Error())
} else {
w.Header().Set("Content-Type", "application/rss+xml")
w.WriteHeader(http.StatusOK)
fmt.Fprint(w, content)
}
}
func handlerRecentChangesRSS(w http.ResponseWriter, rq *http.Request) {
genericHandlerOfFeeds(w, rq, history.RecentChangesRSS, "RSS")
}
func handlerRecentChangesAtom(w http.ResponseWriter, rq *http.Request) {
genericHandlerOfFeeds(w, rq, history.RecentChangesAtom, "Atom")
}
func handlerRecentChangesJSON(w http.ResponseWriter, rq *http.Request) {
genericHandlerOfFeeds(w, rq, history.RecentChangesJSON, "JSON feed")
}