Merge pull request #108 from mikedewar/settings_file

Settings file

main.go

@@ -1,21 +1,53 @@
 package main
 
 import (
+	"encoding/json"
+	"io/ioutil"
 	"log"
 	"net/http"
+	"os"
 
+	"github.com/mitchellh/go-homedir"
 	"github.com/nytlabs/st-core/server"
 )
 
 func main() {
 
-	s := server.NewServer()
+	// Unpack settings file, or create a new one if necessary
+	var settings server.Settings
+
+	dir, err := homedir.Dir()
+	if err != nil {
+		log.Fatal(err)
+	}
+	fname := dir + "/.st.json"
+	d, err := ioutil.ReadFile(fname)
+	if err != nil {
+		if os.IsNotExist(err) {
+			// make a fresh settings file
+			log.Println("creating new settings file at", fname)
+			newSettings := server.NewSettings()
+			d, err = json.Marshal(newSettings)
+			err = ioutil.WriteFile(fname, d, 0644)
+			if err != nil {
+				log.Fatal(err)
+			}
+		} else {
+			log.Fatal(err)
+		}
+	}
+	err = json.Unmarshal(d, &settings)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	s := server.NewServer(settings)
 	r := s.NewRouter()
 
 	http.Handle("/", r)
 
 	log.Println("serving on 7071")
-	err := http.ListenAndServe(":7071", nil)
+	err = http.ListenAndServe(":7071", nil)
 	if err != nil {
 		log.Panicf(err.Error())
 	}

server/server.go

@@ -27,8 +27,23 @@ const (
 	PARAM = "param"
 )
 
+// user-session specific settings
+type Settings struct {
+	Autosave        bool
+	GithubUserToken string
+}
+
+// NewSettings returns the default settings object
+func NewSettings() Settings {
+	return Settings{
+		Autosave:        true,
+		GithubUserToken: "",
+	}
+}
+
 // The Server maintains a set of handlers that coordinate the creation of Nodes
 type Server struct {
+	settings      Settings
 	groups        map[int]*Group // TODO these maps aren't strictly necessary, but save constantly performing depth first searches
 	parents       map[int]int
 	blocks        map[int]*BlockLedger
@@ -46,7 +61,7 @@ type Server struct {
 }
 
 // NewServer starts a new Server. This object is immediately up and running.
-func NewServer() *Server {
+func NewServer(settings Settings) *Server {
 	groups := make(map[int]*Group)
 	groups[0] = &Group{
 		Label:    "root",
@@ -63,6 +78,7 @@ func NewServer() *Server {
 	sourceLibrary := core.GetSources()
 	parents := make(map[int]int)
 	s := &Server{
+		settings:      settings,
 		lastID:        0,
 		parents:       parents,
 		groups:        groups,

server/server_test.go

@@ -45,8 +45,8 @@ func procTestResponse(res *http.Response, t *testing.T, expectedCode int) {
 }
 
 func TestEndpoints(t *testing.T) {
-
-	s := NewServer()
+	settings := NewSettings()
+	s := NewServer(settings)
 	r := s.NewRouter()
 	server := httptest.NewServer(r)
 	defer server.Close()