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package main
import (
"crypto/sha256"
"fmt"
"log"
"net/http"
"os"
"strings"
"github.com/gorilla/mux"
)
// handles "/"
func indexHandler(w http.ResponseWriter, r *http.Request) {
// Stat the index template to get the mod time
var etag string
if indextmpl, err := os.Stat("assets/tmpl/index.html"); err != nil {
log.Printf("Couldn't stat index template for ETag ... %v\n", err)
} else {
etag = fmt.Sprintf("%x", sha256.Sum256([]byte(indextmpl.ModTime().String())))
}
// Take the hex-encoded sha256 sum of the index template's mod time
// to send as an ETag. If an error occured when grabbing the file info,
// the ETag will be empty.
w.Header().Set("ETag", "\""+etag+"\"")
w.Header().Set("Content-Type", htmlutf8)
// Pass the confObj.Instance data to the template,
// then send it to the client.
confObj.Mu.RLock()
err := tmpls.ExecuteTemplate(w, "index.html", confObj.Instance)
confObj.Mu.RUnlock()
if err != nil {
log500(w, r, err)
return
}
log200(r)
}
// handles "/api"
func apiBaseHandler(w http.ResponseWriter, r *http.Request) {
indexHandler(w, r)
}
// handles "/api/plain"
// maybe add json/xml support later
func apiFormatHandler(w http.ResponseWriter, r *http.Request) {
indexHandler(w, r)
}
// handles "/api/plain/(users|mentions|tweets)"
func apiEndpointHandler(w http.ResponseWriter, r *http.Request) {
err := r.ParseForm()
if err != nil {
log500(w, r, err)
return
}
// if there's a query, execute it
if r.FormValue("q") != "" || r.FormValue("url") != "" {
err := apiEndpointQuery(w, r)
if err != nil {
log500(w, r, err)
return
}
log200(r)
return
}
// if there's no query, return everything in
// registry for a given endpoint
var out []string
switch r.URL.Path {
case "/api/plain/users":
out, err = twtxtCache.QueryUser("")
case "/api/plain/mentions":
out, err = twtxtCache.QueryInStatus("@<")
default:
out, err = twtxtCache.QueryAllStatuses()
}
data := parseQueryOut(out)
if err != nil {
data = []byte("")
}
w.Header().Set("Content-Type", txtutf8)
_, err = w.Write(data)
if err != nil {
log500(w, r, err)
return
}
log200(r)
}
// handles POST for "/api/plain/users"
func apiEndpointPOSTHandler(w http.ResponseWriter, r *http.Request) {
apiPostUser(w, r)
}
// handles "/api/plain/tags"
func apiTagsBaseHandler(w http.ResponseWriter, r *http.Request) {
out, err := twtxtCache.QueryInStatus("#")
if err != nil {
log500(w, r, err)
return
}
data := parseQueryOut(out)
w.Header().Set("Content-Type", txtutf8)
_, err = w.Write(data)
if err != nil {
log500(w, r, err)
return
}
log200(r)
}
// handles "/api/plain/tags/[a-zA-Z0-9]+"
func apiTagsHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
tags := vars["tags"]
tags = strings.ToLower(tags)
out, err := twtxtCache.QueryInStatus("#" + tags)
if err != nil {
log500(w, r, err)
return
}
tags = strings.Title(tags)
out2, err := twtxtCache.QueryInStatus("#" + tags)
if err != nil {
log500(w, r, err)
return
}
tags = strings.ToUpper(tags)
out3, err := twtxtCache.QueryInStatus("#" + tags)
if err != nil {
log500(w, r, err)
return
}
out = append(out, out2...)
out = append(out, out3...)
out = uniq(out)
data := parseQueryOut(out)
w.Header().Set("Content-Type", txtutf8)
_, err = w.Write(data)
if err != nil {
log500(w, r, err)
return
}
log200(r)
}
// Serving the stylesheet virtually because
// files aren't served directly.
func cssHandler(w http.ResponseWriter, r *http.Request) {
// Sending the sha256 sum of the modtime in hexadecimal for the ETag header
etag := fmt.Sprintf("%x", sha256.Sum256([]byte(staticCache.cssMod.String())))
w.Header().Set("ETag", "\""+etag+"\"")
w.Header().Set("Content-Type", cssutf8)
pingAssets()
n, err := w.Write(staticCache.css)
if err != nil || n == 0 {
log500(w, r, err)
return
}
log200(r)
}
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