From 8c5eeeaa080929e00dce35525e8b849cf3e930b7 Mon Sep 17 00:00:00 2001
From: Derek Stevens <nilix@nilfm.cc>
Date: Sun, 27 Nov 2022 08:56:48 -0700
Subject: [PATCH] server, adapter: starting to put things together

---
 gametable/server.go | 50 +++++++++++++++++++++++++++++++++++++++------
 mongodb/adapter.go  | 23 +++++++++++++++++++--
 2 files changed, 65 insertions(+), 8 deletions(-)

diff --git a/gametable/server.go b/gametable/server.go
index 9c65071..d6d2cc2 100644
--- a/gametable/server.go
+++ b/gametable/server.go
@@ -8,6 +8,9 @@ import (
 	"log"
 	"net/http"
 	"nhooyr.io/websocket"
+	"nilfm.cc/git/felt/dbengine"
+	"nilfm.cc/git/felt/models"
+	"nilfm.cc/git/quartzgun/cookie"
 	"sync"
 	"time"
 )
@@ -23,15 +26,17 @@ type GameTableServer struct {
 	logf                   func(f string, v ...interface{})
 	serveMux               http.ServeMux
 	subscribersLock        sync.Mutex
-	subscribers            map[*Subscriber]struct{}
+	subscribers            map[*Subscriber]models.tableKey
+	dbAdapter              dbengine.DbAdapter
 }
 
-func New() *GameTableServer {
+func New(adapter dbengine.DbAdapter) *GameTableServer {
 	srvr := &GameTableServer{
 		subscribeMessageBuffer: 16,
 		logf:                   log.Printf,
-		subscribers:            make(map[*Subscriber]struct{}),
+		subscribers:            make(map[*Subscriber]models.TableKey{}),
 		publishLimiter:         rate.NewLimiter(rate.Every(time.Millisecond*100), 8),
+		dbAdapter:              adapter,
 	}
 	srvr.serveMux.Handle("/", http.FileServer(http.Dir("./static")))
 	srvr.serveMux.HandleFunc("/subscribe", srvr.subscribeHandler)
@@ -66,7 +71,8 @@ func (self *GameTableServer) subscribeHandler(w http.ResponseWriter, r *http.Req
 	}
 }
 
-func (self *GameTableServer) subscribe(ctx context.Context, c *websocket.Conn) error {
+func (self *GameTableServer) subscribe(r *http.Request, c *websocket.Conn) error {
+	ctx := r.Context()
 	ctx = c.CloseRead(ctx)
 
 	s := &Subscriber{
@@ -75,8 +81,33 @@ func (self *GameTableServer) subscribe(ctx context.Context, c *websocket.Conn) e
 			c.Close(websocket.StatusPolicyViolation, "connection too slow to keep up with messages")
 		},
 	}
+
+	tableName, tblNameErr := cookie.GetToken("tableName", r)
+	tablePasscode, tblPassErr := cookie.GetToken("tablePasscode", r)
+
+	if tblNameErr != nil {
+		return tblNameErr
+	} else if tblPassErr != nil {
+		return tblPassErr
+	}
+
+	tableKey = models.TableKey{
+		Name:     tableName,
+		Passcode: tablePasscode,
+	}
+
+	if !self.dbAdapter.CheckTable(tableKey) {
+		return errors.New("Table with matching key was not found on this server")
+	}
+
 	self.addSubscriber(s)
+
 	defer self.deleteSubscriber(s)
+	select {
+	case s.msgs <- self.getCurrentState(tableKey):
+	default:
+		go s.closeSlow()
+	}
 
 	for {
 		select {
@@ -125,9 +156,16 @@ func (self *GameTableServer) publish(msg []byte) {
 	}
 }
 
-func (self *GameTableServer) addSubscriber(s *Subscriber) {
+func (self *GameTableServer) getCurrentState(tableKey models.TableKey) []byte {
+	// get diceroll log, map, and token state
+	// build into a []byte message
+
+	return make([]byte, 1)
+}
+
+func (self *GameTableServer) addSubscriber(s *Subscriber, k models.TableKey) {
 	self.subscribersLock.Lock()
-	self.subscribers[s] = struct{}{}
+	self.subscribers[s] = k
 	self.subscribersLock.Unlock()
 }
 
diff --git a/mongodb/adapter.go b/mongodb/adapter.go
index afd7a3f..e64fd04 100644
--- a/mongodb/adapter.go
+++ b/mongodb/adapter.go
@@ -20,6 +20,8 @@ type DbAdapter interface {
 	CreateTable(table models.TableKey) error
 	DestroyTable(table models.TableKey) error
 
+	CheckTable(table models.TableKey) boolean
+
 	InsertDiceRoll(table models.TableKey, diceRoll models.DiceRoll) error
 	GetDiceRolls(table models.TableKey) ([]models.DiceRoll, error)
 
@@ -38,7 +40,8 @@ type DbEngine struct {
 }
 
 func (self *DbEngine) mkCtx(timeoutSec int) context.Context {
-	return context.WithTimeout(context.Background(), 10*time.Second)
+	ctx, _ := context.WithTimeout(context.Background(), 10*time.Second)
+	return ctx
 }
 
 func (self *DbEngine) Init(mongoUri string) error {
@@ -47,7 +50,7 @@ func (self *DbEngine) Init(mongoUri string) error {
 		return err
 	}
 	self.client = client
-	ctx, _ := self.mkCtx(10)
+	ctx := self.mkCtx(10)
 
 	err = client.Connect(ctx)
 	if err != nil {
@@ -114,6 +117,22 @@ func (self *DbEngine) DestroyTable(table models.TableKey) error {
 	return errors.New(fmt.Sprintf(errNoCollection, "tables"))
 }
 
+func (self *DbEngine) CheckTable(table models.TableKey) boolean {
+	tables := self.db.Collection("tables")
+	if tables != nil {
+		_, err := tables.FindOne(self.mkCtx(10), bson.D{
+			{"name", table.Name},
+			{"passcode", table.Passcode},
+		})
+		if err != nil {
+			return false
+		} else {
+			return true
+		}
+	}
+	return false
+}
+
 func (self *DbEngine) InsertDiceRoll(table models.TableKey, diceRoll models.DiceRoll) error {
 	tables := self.db.Collection("tables")
 	if tables != nil {