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package main
import (
"encoding/json"
"fmt"
"io"
"net/http"
"net/url"
"os"
"strings"
"time"
"github.com/gorilla/mux"
"riedstra.dev/mitch/steam-export/steam"
)
// HandleIndex takes care of rendering our embedded template
// and locks the steam library for each request.
func (a *App) HandleIndex(w http.ResponseWriter, r *http.Request) {
// During rendering of the template I believe it's
// mutating during the sort of keys, so Lib no longer
// is an RWMutex and we're just locking this as if
// we're writing to it
a.Library.Lock()
defer a.Library.Unlock()
a.Status.Lock()
defer a.Status.Unlock()
err := a.Templates.ExecuteTemplate(w, "index",
struct {
Lib *steam.Library
Info *statusInfo
Local bool
HostIP string
Port string
Version string
}{
&a.Library.Library,
a.Status,
isLocal(r.RemoteAddr),
GetHostIP(),
getPort(),
Version,
})
if err != nil {
Logger.Printf("While Rendering template: %s", err)
}
Logger.Printf("Client %s Index page", r.RemoteAddr)
}
// HandleInstall takes the HTTP requests for installing a game from a URL
// or local file path
func (a *App) HandleInstall(w http.ResponseWriter, r *http.Request) {
err := r.ParseForm()
if err != nil {
Logger.Printf("Installer: While parsing form: %s", err)
http.Error(w, fmt.Sprintf("Invalid form: %s", err), 400)
return
}
uri := r.Form.Get("uri")
if strings.HasPrefix(uri, "http") {
_, err := url.Parse(uri)
if err != nil {
Logger.Printf("Installer: While parsing url: %s", err)
http.Error(w, fmt.Sprintf("Invalid url: %s", err), 400)
return
}
} else {
fi, err := os.Stat(uri)
if err != nil || !fi.Mode().IsRegular() {
Logger.Printf("Installer: While parsing url/path: %s", err)
http.Error(w, fmt.Sprintf("Invalid uri/path: %s", err), 400)
return
}
}
Logger.Printf("Installer: Sending request for: %s to channel", uri)
a.download <- uri
http.Redirect(w, r, "/", 302)
}
// HandleDownload takes care of exporting our games out to an HTTP request
func (a *App) HandleDownload(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
game := vars["game"]
a.Library.Lock()
g, ok := a.Library.Games[game]
a.Library.Unlock()
if !ok {
Logger.Printf("Missing: %s", game)
http.Error(w, "Game is missing", 404)
return
}
w.Header().Add("Content-type", "application/tar")
w.Header().Add("Estimated-size", fmt.Sprintf("%d", g.Size))
Logger.Printf("Client %s is downloading: %s", r.RemoteAddr, game)
// Invert the writer so we can break up the copy and get progress
// information in here
rdr, pwrtr := io.Pipe()
go func() {
err := g.Package(pwrtr)
if err != nil {
Logger.Println("Error in package writing: ", err)
}
}()
var total int64
start := time.Now()
for {
n, err := io.CopyN(w, rdr, 256*1024*1024)
if err == io.EOF {
break
}
if err != nil {
Logger.Printf("Client %s Error Sending game: %s", r.RemoteAddr, err)
// Headers already sent, don't bother sending an error
return
}
total += n
mb := float64(total / 1024 / 1024)
rate := mb / time.Since(start).Seconds()
Logger.Printf("Client %s is downloading %s: %0.1f%% done %.2f mb/s",
r.RemoteAddr, game, float64(total)/float64(g.Size)*100, rate)
}
Logger.Printf("Client %s finished downloading: %s", r.RemoteAddr, game)
}
// HandleDelete removes the game in question, though it doesn't
// spawn any background processes it usually completes fast enough.
// TODO: Fix if the request taking too long becomes an issue
func (a *App) HandleDelete(w http.ResponseWriter, r *http.Request) {
err := r.ParseForm()
if err != nil {
Logger.Printf("Installer: While parsing form: %s", err)
http.Error(w, fmt.Sprintf("Invalid form: %s", err), 400)
return
}
game := r.PostForm.Get("name")
if game == "" {
Logger.Println("Deleter: No game specified")
http.Error(w, "Game param required", 400)
return
}
a.Library.Lock()
g, ok := a.Library.Games[game]
a.Library.Unlock()
if !ok {
Logger.Printf("Missing: %s", game)
http.Error(w, "Game is missing", 404)
return
}
err = g.Delete()
if err != nil {
Logger.Printf("Error removing game: %s", err)
http.Error(w, fmt.Sprintf("Error removing game: %s", err), 500)
return
}
Logger.Printf("Removed game: %s", game)
a.LibraryReload()
http.Redirect(w, r, "/", 302)
}
// HandleStats dumps out some internal statistics of installation which
// is then parsed by some JS for a progress bar and such
func (a *App) HandleStats(w http.ResponseWriter, r *http.Request) {
a.Status.RLock()
defer a.Status.RUnlock()
w.Header().Add("Content-type", "application/json")
enc := json.NewEncoder(w)
err := enc.Encode(a.Status)
if err != nil {
Logger.Println("While encoding Status: ", err)
}
return
}
// HandleSetLib sets a new library path
func (a *App) HandleSetLib(w http.ResponseWriter, r *http.Request) {
err := r.ParseForm()
if err != nil {
Logger.Printf("Setlib: While parsing form: %s", err)
http.Error(w, fmt.Sprintf("Invalid form: %s", err), 400)
return
}
a.LibrarySet(r.Form.Get("path"))
http.Redirect(w, r, "/", 302)
}
// HandleQuit just calls os.Exit after finishing the request
func HandleQuit(w http.ResponseWriter, r *http.Request) {
Logger.Println("Quit was called, exiting")
w.Header().Add("Content-type", "text/plain")
w.Write([]byte("Shutting down... feel free to close this"))
go func() {
time.Sleep(time.Second * 2)
os.Exit(0)
}()
return
}
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