added basic ws commands

.env.example

@@ -5,5 +5,9 @@ CLIENT_SECRET= # Twitch Client Secret
 REDIR_URI= # Twitch OAuth Redirect URI
     # Required
 
+WS_AUTHORIZATION= # the authorization code all websocket clients will need to connect
+    # Required
+    # TODO this is not the final version, this will not be a permanent config option
+
 SQLITE_DB= # SQlite DB location
     # Default: ./db.sqlite

api/main.go

@@ -10,7 +10,7 @@ import (
 
 func InitApiServer(conf *util.Config, dbConn *db.DBConn, twitchConn *ttv.TwitchConn) (*ApiServer, error) {
 	engine := gin.Default()
-	wsServer, err := ws.InitWSServer(dbConn, twitchConn)
+	wsServer, err := ws.InitWSServer(conf, dbConn, twitchConn)
 	if err != nil {
 		return nil, err
 	}

api/ws/main.go

@@ -1,24 +1,35 @@
 package ws
 
 import (
+	"errors"
+	"fmt"
 	"log"
+	"net"
 	"net/http"
+	"strings"
 
 	"github.com/gobwas/ws"
 	"github.com/gobwas/ws/wsutil"
 	"zomo.dev/largehadroncollider/db"
 	"zomo.dev/largehadroncollider/ttv"
+	"zomo.dev/largehadroncollider/util"
 )
 
-func InitWSServer(dbConn *db.DBConn, twitchConn *ttv.TwitchConn) (*WSServer, error) {
-	return &WSServer{}, nil
+func InitWSServer(conf *util.Config, dbConn *db.DBConn, twitchConn *ttv.TwitchConn) (*WSServer, error) {
+	return &WSServer{conf, dbConn, twitchConn}, nil
 }
 
 type WSServer struct {
+	conf *util.Config
+	db *db.DBConn
+	twitch *ttv.TwitchConn
 }
 
 type WSConn struct {
+	conf *util.Config
+	c net.Conn
 	events []string
+	authrorized bool
 }
 
 func (wsServer *WSServer) Handle(w http.ResponseWriter, r *http.Request) error {
@@ -27,13 +38,19 @@ func (wsServer *WSServer) Handle(w http.ResponseWriter, r *http.Request) error {
 		return err
 	}
 
-	authrorization := ""
+	wsconn := &WSConn{}
+	go wsconn.handleThread(wsServer.conf, conn)
 
-	go func() {
-		defer conn.Close()
+	return nil
+}
+
+func (conn *WSConn) handleThread(conf *util.Config, c net.Conn) {
+	conn.conf = conf
+	conn.c = c
+	defer c.Close()
 
 	for {
-			msg, _, err := wsutil.ReadClientData(conn)
+		msg, _, err := wsutil.ReadClientData(conn.c)
 		if err != nil {
 			// TODO handle error better, print more conn info
 			log.Printf("Error reading data from ws connection %v", err)
@@ -48,21 +65,64 @@ func (wsServer *WSServer) Handle(w http.ResponseWriter, r *http.Request) error {
 
 		log.Printf("%+v", cmd)
 
-			if authrorization == "" {
-				// TODO authorize connection
-				continue
+		err = conn.runCommand(cmd)
+
+		if err != nil {
+			_, err := fmt.Fprintf(conn.c, "error running command: %s: %v", cmd.Command, err)
+			if err != nil {
+				// TODO better print
+				log.Printf("ERROR: unable to send error to client: %v", err)
+				log.Printf("ERROR: client details: %+v", conn)
+				log.Printf("ERROR: command details: %+v", cmd)
+				return
+			}
+		}
+	}
 }
 
-			// TODO run with cmd
+func (conn *WSConn) runCommand(cmd *Command) error {
+	switch strings.ToLower(cmd.Command) {
+	case "ping":
+		return conn.runCommandPing(cmd.Args)
+	case "authorization":
+		return conn.runCommandAuthorization(cmd.Args)
 	
-			// TODO errors will be responded to the client
-			// if the response errors, log and exit the loop
+	case "events-add":
+		return conn.runCommandEventsAdd(cmd.Args)
+
+	default:
+		return fmt.Errorf("invalid command: %s", cmd.Command)
+	}
 }
-	}()
 
+func (conn *WSConn) runCommandPing(_ []string) error {
+	_, err := fmt.Fprint(conn.c, "pong")
+	return err
+}
+
+func (conn *WSConn) runCommandAuthorization(args []string) error {
+	if conn.authrorized {
+		return errors.New("connection already authorized")
+	}
+	if len(args) < 1 {
+		return errors.New("no authorization key given")
+	}
+
+	key := args[0]
+	if key != conn.conf.WSAuthorization {
+		return errors.New("invalid authorization key")
+	}
+
+	conn.authrorized = true
 	return nil
 }
 
-func runCommand(cmd *Command) {
-
+func (conn *WSConn) runCommandEventsAdd(args []string) error {
+	if !conn.authrorized {
+		return errors.New("unauthorized")
+	}
+
+	// TODO subscribe
+
+	return nil
 }

util/conf.go

@@ -27,6 +27,7 @@ type Config struct {
 	ClientSecret string
 	RedirectURI  string
 	SQliteDB     string
+	WSAuthorization string
 }
 
 func (c *Config) def() {
@@ -51,6 +52,9 @@ func (c *Config) loadEnv() error {
 	if str, found := os.LookupEnv("SQLITE_DB"); found {
 		c.SQliteDB = strings.TrimSpace(str)
 	}
+	if str, found := os.LookupEnv("WS_AUTHORIZATION"); found {
+		c.WSAuthorization = strings.TrimSpace(str)
+	}
 
 	return nil
 }
@@ -65,6 +69,9 @@ func (c *Config) verify() error {
 	if c.RedirectURI == "" {
 		return errors.New("unable to load a configured Redirect URI")
 	}
+	if c.WSAuthorization == "" {
+		return errors.New("unable to load a configured WS Authorization code")
+	}
 
 	return nil
 }