From ce46b6f027d60440cd9851dd41c5bfa712f7a4ce Mon Sep 17 00:00:00 2001
From: Settel <settel@localhost>
Date: Fri, 6 Aug 2021 21:46:00 +0200
Subject: [PATCH] gameinfo

---
 server/data/users/123123.json         |  5 ++++
 server/src/application/syncHandler.go |  2 ++
 server/src/engine/engine.go           |  2 +-
 server/src/game/game.go               | 26 +++++++++++++++++++
 server/src/game/struct.go             |  8 +++---
 server/src/handler/gameinfo.go        | 36 +++++++++++++++++++++++++++
 server/src/knyt.go                    |  1 +
 7 files changed, 76 insertions(+), 4 deletions(-)
 create mode 100644 server/data/users/123123.json
 create mode 100644 server/src/handler/gameinfo.go

diff --git a/server/data/users/123123.json b/server/data/users/123123.json
new file mode 100644
index 0000000..b7195ab
--- /dev/null
+++ b/server/data/users/123123.json
@@ -0,0 +1,5 @@
+{
+  "name": "Master",
+  "role": "gamemaster",
+  "game": "067fb1b8-8303-4faa-95d2-1832770a791c"
+}
diff --git a/server/src/application/syncHandler.go b/server/src/application/syncHandler.go
index f075ee5..f5671f2 100644
--- a/server/src/application/syncHandler.go
+++ b/server/src/application/syncHandler.go
@@ -21,6 +21,8 @@ func (app *Application) SyncHandler(usr *user.User, w http.ResponseWriter, r *ht
 		return
 	}
 
+	gm.UpdatePlayerTimestamp(usr)
+
 	eng := gm.GetEngine()
 	eng.SyncHandler(w, r)
 }
diff --git a/server/src/engine/engine.go b/server/src/engine/engine.go
index 4b741da..30c2085 100644
--- a/server/src/engine/engine.go
+++ b/server/src/engine/engine.go
@@ -21,7 +21,7 @@ func (engine *Engine) Run() {
 	for {
 		value := engine.obs.Value().(syncdata.SyncData)
 		fmt.Printf("game %s: %d\n", engine.id, value.VersionRef)
-		wait := int(1 + r.Float32()*2)
+		wait := int(1 + r.Float32()*5)
 		for i := 0; i < wait; i++ {
 			time.Sleep(1 * time.Second)
 		}
diff --git a/server/src/game/game.go b/server/src/game/game.go
index dfad180..f20a656 100644
--- a/server/src/game/game.go
+++ b/server/src/game/game.go
@@ -5,6 +5,8 @@ import (
 	"fmt"
 	"os"
 	"sirlab.de/go/knyt/engine"
+	"sirlab.de/go/knyt/user"
+	"time"
 )
 
 func NewGameFromFile(id, fileName string) (*Game, error) {
@@ -19,7 +21,10 @@ func NewGameFromFile(id, fileName string) (*Game, error) {
 	} else {
 		gm.id = id
 		gm.eng = engine.NewEngine(id)
+		gm.playerTimestamp = make(map[string]time.Time)
+
 		go gm.eng.Run()
+
 		return &gm, nil
 	}
 }
@@ -31,3 +36,24 @@ func (gm *Game) GetId() string {
 func (gm *Game) GetEngine() *engine.Engine {
 	return gm.eng
 }
+
+func (gm *Game) UpdatePlayerTimestamp(usr *user.User) {
+	gm.playerTimestamp[usr.GetId()] = time.Now()
+}
+
+func (gm *Game) GetActivePlayers() []string {
+	players := make([]string, 0)
+
+	now := time.Now()
+	for usrId, timestamp := range gm.playerTimestamp {
+		elapsed := now.Sub(timestamp)
+
+		fmt.Printf("%s: %.0f\n", usrId, elapsed.Seconds())
+
+		if elapsed.Seconds() < 30.0 {
+			players = append(players, usrId)
+		}
+	}
+
+	return players
+}
diff --git a/server/src/game/struct.go b/server/src/game/struct.go
index bc49fb7..28eb3fb 100644
--- a/server/src/game/struct.go
+++ b/server/src/game/struct.go
@@ -2,10 +2,12 @@ package game
 
 import (
 	"sirlab.de/go/knyt/engine"
+	"time"
 )
 
 type Game struct {
-	id   string
-	Name string `json:"name"`
-	eng  *engine.Engine
+	id              string
+	Name            string `json:"name"`
+	eng             *engine.Engine
+	playerTimestamp map[string]time.Time
 }
diff --git a/server/src/handler/gameinfo.go b/server/src/handler/gameinfo.go
new file mode 100644
index 0000000..a55c0e0
--- /dev/null
+++ b/server/src/handler/gameinfo.go
@@ -0,0 +1,36 @@
+package handler
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"sirlab.de/go/knyt/user"
+)
+
+type gameLight struct {
+	Players []string `json:"players"`
+}
+
+func (authMux *AuthMux) GetGameInfo(usr *user.User, w http.ResponseWriter, r *http.Request) {
+	gameRef := r.URL.Query().Get("g")
+	gm, err := authMux.app.GetGameById(gameRef)
+	if err != nil {
+		w.WriteHeader(http.StatusNotFound)
+		fmt.Fprintf(w, "game not found")
+		return
+	}
+
+	if !usr.IsGamemaster() || (usr.Game != gameRef && !usr.IsAdmin()) {
+		w.WriteHeader(http.StatusForbidden)
+		fmt.Fprintf(w, "forbidden")
+		return
+	}
+
+	gmLight := gameLight{
+		Players: gm.GetActivePlayers(),
+	}
+
+	w.Header().Add("Content-Type", "application/json")
+	jsonString, _ := json.Marshal(gmLight)
+	fmt.Fprintf(w, string(jsonString))
+}
diff --git a/server/src/knyt.go b/server/src/knyt.go
index dbb74e0..bafdb66 100644
--- a/server/src/knyt.go
+++ b/server/src/knyt.go
@@ -22,6 +22,7 @@ func main() {
 	mux.PublicHandleFunc("/api/login", mux.Login)
 	mux.PublicHandleFunc("/api/logout", mux.Logout)
 	mux.PrivateHandleFunc("/api/userinfo", mux.GetUserInfo)
+	mux.PrivateHandleFunc("/api/gameinfo", mux.GetGameInfo)
 	mux.PrivateHandleFunc("/api/sync", app.SyncHandler)
 
 	// default handler