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mycorrhiza/http_readers.go
2021-02-24 22:34:42 +05:00

122 lines
3.5 KiB
Go

package main
import (
"fmt"
"io/ioutil"
"log"
"net/http"
"os"
"path/filepath"
"strings"
"github.com/bouncepaw/mycorrhiza/history"
"github.com/bouncepaw/mycorrhiza/hyphae"
"github.com/bouncepaw/mycorrhiza/markup"
"github.com/bouncepaw/mycorrhiza/mimetype"
"github.com/bouncepaw/mycorrhiza/user"
"github.com/bouncepaw/mycorrhiza/util"
"github.com/bouncepaw/mycorrhiza/views"
)
func init() {
http.HandleFunc("/page/", handlerHypha)
http.HandleFunc("/hypha/", handlerHypha)
http.HandleFunc("/text/", handlerText)
http.HandleFunc("/binary/", handlerBinary)
http.HandleFunc("/rev/", handlerRevision)
http.HandleFunc("/attachment/", handlerAttachment)
}
func handlerAttachment(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
var (
hyphaName = HyphaNameFromRq(rq, "attachment")
h = hyphae.ByName(hyphaName)
u = user.FromRequest(rq)
)
util.HTTP200Page(w,
views.BaseHTML(
fmt.Sprintf("Attachment of %s", util.BeautifulName(hyphaName)),
views.AttachmentMenuHTML(rq, h, u),
u))
}
// handlerRevision displays a specific revision of text part a page
func handlerRevision(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
var (
shorterUrl = strings.TrimPrefix(rq.URL.Path, "/rev/")
firstSlashIndex = strings.IndexRune(shorterUrl, '/')
revHash = shorterUrl[:firstSlashIndex]
hyphaName = util.CanonicalName(shorterUrl[firstSlashIndex+1:])
h = hyphae.ByName(hyphaName)
contents = fmt.Sprintf(`<p>This hypha had no text at this revision.</p>`)
textContents, err = history.FileAtRevision(h.TextPath, revHash)
u = user.FromRequest(rq)
)
if err == nil {
contents = markup.Doc(hyphaName, textContents).AsHTML()
}
page := views.RevisionHTML(
rq,
h,
contents,
revHash,
)
w.Header().Set("Content-Type", "text/html;charset=utf-8")
w.WriteHeader(http.StatusOK)
w.Write([]byte(base(util.BeautifulName(hyphaName), page, u)))
}
// handlerText serves raw source text of the hypha.
func handlerText(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
hyphaName := HyphaNameFromRq(rq, "text")
if h := hyphae.ByName(hyphaName); h.Exists {
log.Println("Serving", h.TextPath)
w.Header().Set("Content-Type", "text/plain; charset=utf-8")
http.ServeFile(w, rq, h.TextPath)
}
}
// handlerBinary serves binary part of the hypha.
func handlerBinary(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
hyphaName := HyphaNameFromRq(rq, "binary")
if h := hyphae.ByName(hyphaName); h.Exists {
log.Println("Serving", h.BinaryPath)
w.Header().Set("Content-Type", mimetype.FromExtension(filepath.Ext(h.BinaryPath)))
http.ServeFile(w, rq, h.BinaryPath)
}
}
// handlerHypha is the main hypha action that displays the hypha and the binary upload form along with some navigation.
func handlerHypha(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
var (
hyphaName = HyphaNameFromRq(rq, "page", "hypha")
h = hyphae.ByName(hyphaName)
contents string
openGraph string
u = user.FromRequest(rq)
)
if h.Exists {
fileContentsT, errT := ioutil.ReadFile(h.TextPath)
_, errB := os.Stat(h.BinaryPath)
if errT == nil {
md := markup.Doc(hyphaName, string(fileContentsT))
contents = md.AsHTML()
openGraph = md.OpenGraphHTML()
}
if !os.IsNotExist(errB) {
contents = views.AttachmentHTML(h) + contents
}
}
util.HTTP200Page(w,
views.BaseHTML(
util.BeautifulName(hyphaName),
views.HyphaHTML(rq, h, contents),
u,
openGraph))
}