added download all mods button

src/mods_handler.go

@@ -11,6 +11,7 @@ import (
     "os"
     "io"
     "errors"
+    "lockfile"
 )
 
 // Returns JSON response of all mods installed in factorio/mods
@@ -400,6 +401,61 @@ func UploadModHandler(w http.ResponseWriter, r *http.Request) {
     }
 }
 
+func DownloadModsHandler(w http.ResponseWriter, r *http.Request) {
+    var err error
+
+    zipWriter := zip.NewWriter(w)
+    defer zipWriter.Close()
+
+
+    //iterate over folder and create everything in the zip
+    err = filepath.Walk(config.FactorioModsDir, func(path string, info os.FileInfo, err error) error {
+        if info.IsDir() == false {
+            //Lock the file, that we are want to read
+            err := fileLock.RLock(path)
+            if err != nil {
+                log.Printf("error locking file for reading, something else has locked it")
+                return err
+            }
+            defer fileLock.RUnlock(path)
+
+            writer, err := zipWriter.Create(info.Name())
+            if err != nil {
+                log.Printf("error on creating new file inside zip: %s", err)
+                return err
+            }
+
+            file, err := os.Open(path)
+            if err != nil {
+                log.Printf("error on opening modfile: %s", err)
+                return err
+            }
+            defer file.Close()
+
+            _, err = io.Copy(writer, file)
+            if err != nil {
+                log.Printf("error on copying file into zip: %s", err)
+                return err
+            }
+        }
+
+        return nil
+    })
+    if err == lockfile.ErrorAlreadyLocked {
+        w.WriteHeader(http.StatusLocked)
+        return
+    }
+    if err != nil {
+        log.Printf("error on walking over the mods: %s", err)
+        w.WriteHeader(http.StatusInternalServerError)
+        return
+    }
+
+    writer_header := w.Header()
+    writer_header.Set("Content-Type", "application/zip;charset=UTF-8")
+    writer_header.Set("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", "all_installed_mods.zip"))
+}
+
 func ListModPacksHandler(w http.ResponseWriter, r *http.Request) {
     var err error
     resp := JSONResponse{

src/routes.go

@@ -208,6 +208,11 @@ var apiRoutes = Routes{
 		"POST",
 		"/mods/upload",
 		UploadModHandler,
+	},{
+		"DownloadMods",
+		"GET",
+		"/mods/download",
+		DownloadModsHandler,
 	}, {
 		"ListSaves",
 		"GET",

ui/App/components/Mods/ModOverview.jsx

@@ -43,6 +43,10 @@ class ModOverview extends React.Component {
         })
     }
 
+    downloadAllHandler(e) {
+        e.stopPropagation();
+    }
+
     render() {
         return(
             <div>
@@ -84,6 +88,15 @@ class ModOverview extends React.Component {
                         <i className="fa fa-minus"></i>
                         <h3 className="box-title">Manage Mods</h3>
                         <div className="box-tools pull-right">
+                            {
+                                this.props.installedMods != null ?
+                                    <NativeListener onClick={this.downloadAllHandler}>
+                                        <a className="btn btn-box-tool btn-default" style={{marginRight: 20}} href={"/api/mods/download"} download>
+                                            Download all Mods
+                                        </a>
+                                    </NativeListener>
+                                    : null
+                            }
                             {
                                 this.props.updates_available > 0 ?
                                     <NativeListener onClick={this.props.updateAllMods}>