Update README.md

Tryiing to fix Jenkins.

.gitignore

@@ -1,2 +1,4 @@
 project_context.txt
-shagram.db
+shagram.db
+deploy/shagram/nginx/certs/*.pem
+deploy/shagram/.env

Dockerfile

@@ -1,20 +1,22 @@
 FROM golang:1.25.5-alpine AS builder
-
-RUN apk add --no-cache build-base
+RUN apk add --no-cache build-base ca-certificates
 WORKDIR /app
+
 COPY go.mod go.sum ./
-RUN go mod download
+RUN --mount=type=cache,target=/go/pkg/mod \
+    go mod download
+
 COPY . .
-RUN CGO_ENABLED=1 GOOS=linux go build -a -installsuffix cgo -o shagram ./cmd/server
+RUN --mount=type=cache,target=/go/pkg/mod \
+    --mount=type=cache,target=/root/.cache/go-build \
+    CGO_ENABLED=1 GOOS=linux go build -o shagram ./cmd/server
 
 FROM alpine:latest
-RUN apk --no-cache add ca-certificates sqlite-libs
-
+RUN apk add --no-cache ca-certificates sqlite-libs sqlite
 WORKDIR /app
 COPY --from=builder /app/shagram .
 COPY static ./static
 COPY migrations ./migrations
 RUN mkdir -p /app/data
-
 EXPOSE 8080
-CMD ["./shagram"]
+CMD ["./shagram"]

Jenkinsfile

@@ -0,0 +1,99 @@
+pipeline {
+  agent { label 'docker-agent' }
+
+  options {
+    skipDefaultCheckout(true)
+    timestamps()
+  }
+
+  environment {
+    REGISTRY     = "158.160.92.116:8085"
+    REGISTRY_PROJECT = "shagram"
+    IMAGE_NAME   = "shagram"
+    DEPLOY_DIR   = "/opt/shagram/shagram/deploy/shagram"
+    COMPOSE_FILE = "${WORKSPACE}/deploy/shagram/compose.yaml"
+  }
+
+  stages {
+    stage('Checkout') {
+      steps {
+        checkout scm
+        sh '''
+          set -eux
+          git reset --hard
+          git clean -xffd
+        '''
+      }
+    }
+
+    stage('Detect branch') {
+      steps {
+        script {
+          env.GIT_BRANCH = sh(
+            script: "git name-rev --name-only --refs=refs/remotes/origin/* HEAD | sed 's#^remotes/##' | head -n1",
+            returnStdout: true
+          ).trim()
+          echo "Detected branch: ${env.GIT_BRANCH}"
+        }
+      }
+    }
+
+    stage('Build image') {
+      steps {
+        script {
+          env.GIT_SHA = sh(script: "git rev-parse --short HEAD", returnStdout: true).trim()
+          // итоговый тег для Harbor
+          env.APP_IMAGE = "${REGISTRY}/${REGISTRY_PROJECT}/${IMAGE_NAME}:${env.GIT_SHA}"
+        }
+        sh '''
+          set -eux
+          # собираем локальный образ без registry
+          docker build -t "${IMAGE_NAME}:${GIT_SHA}" .
+        '''
+      }
+    }
+
+    stage('Login & Push to Harbor') {
+      steps {
+        withCredentials([usernamePassword(
+          credentialsId: 'harbor-creds',
+          usernameVariable: 'HARBOR_USER',
+          passwordVariable: 'HARBOR_PASS'
+        )]) {
+          sh '''
+            set -eux
+            echo "$HARBOR_PASS" | docker login "$REGISTRY" -u "$HARBOR_USER" --password-stdin
+            docker tag "${IMAGE_NAME}:${GIT_SHA}" "${APP_IMAGE}"
+            docker push "${APP_IMAGE}"
+          '''
+        }
+      }
+    }
+
+    stage('Test') {
+      steps {
+        sh 'echo "Testing..."'
+      }
+    }
+
+    stage('Deploy') {
+      when {
+        expression { env.GIT_BRANCH == 'origin/main' }
+      }
+      steps {
+        sh '''
+          set -eux
+
+          mkdir -p "$DEPLOY_DIR"
+          cat > "$DEPLOY_DIR/.env" <<EOF
+APP_IMAGE=${APP_IMAGE}
+EOF
+
+          docker compose -f "$COMPOSE_FILE" --project-directory "$DEPLOY_DIR" pull
+          docker compose -f "$COMPOSE_FILE" --project-directory "$DEPLOY_DIR" up -d --remove-orphans
+          docker compose -f "$COMPOSE_FILE" --project-directory "$DEPLOY_DIR" ps
+        '''
+      }
+    }
+  }
+}

README.md

@@ -0,0 +1,141 @@
+# Shagram — Go WebSocket Chat | DevOps Pet Project
+
+Shagram is a small real-time chat application written in Go.
+
+This is primarily a **DevOps-focused pet project**: the app itself is intentionally simple, while the main goal is to practice CI/CD, containerization, reverse proxy/TLS, and operating self-hosted infrastructure.
+
+> Public repo note: I intentionally do not publish any real server URLs, IP addresses, credentials, or registry endpoints here.
+
+## Documentation
+Detailed setup guides are kept in separate README files to avoid duplication:
+- Jenkins CI infrastructure (controller + inbound Docker agent): `infra/jenkins/README.md`
+- Nginx TLS certificates for dev/demo (self-signed): `deploy/shagram/nginx/certs/README.md`
+
+## What it does
+- Multi-room chat via WebSockets (`/ws/:room`) with message broadcast.
+- Message history persisted in SQLite and available through an HTTP API.
+- Minimal browser UI served from `./static`.
+
+## DevOps skills demonstrated
+- Cloud: Deployed and operated on a VPS in **Yandex Cloud** (self-managed infrastructure).
+- Docker: Multi-stage image build for a Go service; small runtime image.
+- Docker Compose: Stack orchestration for the app (Go service + Nginx) and for CI infrastructure (Jenkins controller + agent).
+- Nginx: Reverse proxy configuration for HTTP + WebSocket (Upgrade/Connection headers) and TLS termination.
+- TLS: Self-signed certificates for dev/demo environments; production note to use a trusted CA (e.g., Let’s Encrypt).
+- CI/CD with Jenkins: Pipeline that builds a Docker image, tags it, pushes it to a registry, and deploys via Docker Compose (deploy gated to `main`).
+- GitHub → Jenkins automation: GitHub repository webhook triggers Jenkins builds on push/changes.
+- Private registry (Harbor): Self-hosted registry for storing and distributing built images.
+- Jenkins agent architecture: Dedicated inbound Docker agent for builds, with Docker socket mounting for Docker-based workloads (security caveat applies).
+- Ops automation: One-command restart/update script (`restart-stacks.sh`) that pulls and recreates Shagram, Jenkins, and Harbor stacks.
+
+## Roadmap
+- Kubernetes: Migrate deployment from Docker Compose to Kubernetes (manifests/Helm), add Ingress + cert-manager, and prepare the app for future scaling (multi-replica WebSocket strategy and persistent storage).
+
+## Application stack
+- Go + Gin (HTTP API and routing) (`cmd/server`).
+- WebSockets: Gorilla WebSocket (`internal/api`, `internal/websocket`).
+- Auth: JWT access tokens (`internal/auth`); login endpoint issues tokens; WebSocket uses `?token=...`.
+- Storage: SQLite (`internal/db`) initialized from `migrations/schema.sql`.
+
+## Configuration
+Environment variables:
+- `JWT_SECRET` (required): Signing key for JWT tokens.
+- `DATABASE_PATH` (optional): SQLite file path; defaults to `/app/data/shagram.db` in the container.
+- `WS_ALLOWED_ORIGINS` (required for WebSocket): Comma-separated list of allowed `Origin` values for browser WebSocket connections.
+- `APP_IMAGE` (optional, deployment): Docker image reference used by Compose to deploy a prebuilt image.
+
+## HTTP API
+Server listens on `:8080`.
+
+- `POST /api/auth/login` → `{ "access_token": "..." }`
+- `GET /api/me` (requires `Authorization: Bearer <token>`) → `{ "username": "..." }`
+- `GET /api/rooms` → `{ "rooms": [...] }`
+- `GET /api/messages/:room` → `{ "messages": [...] }` (last 50 messages)
+
+## WebSocket
+Endpoint:
+- `ws(s)://<host>/ws/<room>?token=<access_token>`
+
+Client sends JSON:
+```json
+{ "text": "hello" }
+```
+
+Server broadcasts plain text messages:
+- `alice: hello`
+
+Security notes:
+- WebSocket requires a JWT token (`?token=...`) and validates the `Origin` header against `WS_ALLOWED_ORIGINS`.
+- This project is still a learning lab; for production you would additionally harden auth, rate limits, and request validation.
+
+## Data model (SQLite)
+Schema is created on startup from `migrations/schema.sql` and includes:
+- `rooms(id, name)`
+- `messages(id, room_id, user, text, created_at)`
+
+## Quickstart (local, without Docker)
+Prerequisites: Go toolchain.
+
+```bash
+export JWT_SECRET=change-me
+export DATABASE_PATH=./shagram.db
+export WS_ALLOWED_ORIGINS=http://localhost:8080
+
+go run ./cmd/server
+```
+
+Open:
+- http://localhost:8080
+
+## Quickstart (Docker Compose + Nginx TLS)
+Prerequisites: Docker + Docker Compose.
+
+1) Generate a self-signed TLS certificate (dev/demo only):  
+See `deploy/shagram/nginx/certs/README.md`.
+
+2) Create `deploy/shagram/.env`:
+
+```text
+JWT_SECRET=change-me
+WS_ALLOWED_ORIGINS=https://localhost
+
+Optional: override the app image (e.g., from your registry)
+APP_IMAGE=<your-registry>/<project>/shagram:<tag>
+```
+
+3) Start:
+
+```bash
+cd deploy/shagram
+docker compose up -d --build
+```
+
+Open:
+- https://localhost
+
+## CI/CD overview (Jenkins + Registry)
+- Jenkins pipeline builds a Docker image from this repository, tags it, pushes it to a registry, and deploys the updated stack with Docker Compose (deploy gated to `main`).
+- Jenkins is triggered by a GitHub repository webhook (push/changes).
+- Jenkins setup instructions: `infra/jenkins/README.md`.
+
+## Ops: restart / update all stacks
+On the host, `restart-stacks.sh` can be used to pull and recreate:
+- Shagram stack (app + nginx)
+- Jenkins stack (controller + agent)
+- Harbor stack (registry)
+
+## Repository structure
+- `cmd/server/` — Gin router, endpoints, wiring.
+- `internal/auth/` — JWT issuing/parsing + Gin auth middleware.
+- `internal/api/` — WebSocket handler (token validation + origin check + DB persistence + broadcast).
+- `internal/websocket/` — In-memory hub/rooms and broadcast logic.
+- `internal/db/` — SQLite connection + schema bootstrap.
+- `migrations/` — SQL schema.
+- `static/` — Minimal web UI.
+- `deploy/shagram/` — Docker Compose + Nginx config/certs.
+- `infra/jenkins/` — Jenkins controller/agent Compose setup and docs.
+
+## Notes / trade-offs
+- The WebSocket hub is in-memory, so the app is intended to run as a single instance (no horizontal scaling).
+- Jenkins Docker agent mounts `/var/run/docker.sock`, which provides high-level control of the Docker host; use only in trusted environments.
+- Self-signed TLS is for development/demo; production should use a trusted CA (e.g., Let’s Encrypt).

cmd/server/main.go

@@ -3,16 +3,23 @@ package main
 import (
 	"log"
 	"net/http"
+	"os"
 	"shagram/internal/api"
+	"shagram/internal/auth"
 	"shagram/internal/db"
 	"shagram/internal/models"
 	"shagram/internal/websocket"
+	"time"
 
 	"github.com/gin-gonic/gin"
 )
 
 func main() {
-	database, err := db.NewDB("/app/data/shagram.db")
+	dbPath := os.Getenv("DATABASE_PATH")
+	if dbPath == "" {
+		dbPath = "/app/data/shagram.db"
+	}
+	database, err := db.NewDB(dbPath)
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -24,6 +31,27 @@ func main() {
 
 	router := gin.Default()
 
+	router.POST("/api/auth/login", func(c *gin.Context) {
+		var req struct {
+			Username string `json:"username"`
+		}
+		if err := c.ShouldBindJSON(&req); err != nil || req.Username == "" {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "username required"})
+			return
+		}
+
+		token, err := auth.NewAccessToken(req.Username, time.Hour)
+		if err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+			return
+		}
+
+		c.JSON(200, gin.H{"access_token": token})
+	})
+	router.GET("/api/me", auth.Middleware(), func(c *gin.Context) {
+		username := c.GetString(auth.CtxUsernameKey)
+		c.JSON(200, gin.H{"username": username})
+	})
 	router.GET("/ws/:room", func(c *gin.Context) {
 		api.WebSocketHandler(hub, database)(c)
 	})

deploy/shagram/compose.yaml

@@ -0,0 +1,28 @@
+services:
+  shagram:
+    image: ${APP_IMAGE:-shagram:local}
+    build:
+      context: ../..
+    container_name: shagram-app
+    environment:
+      - WS_ALLOWED_ORIGINS=${WS_ALLOWED_ORIGINS}
+      - DATABASE_PATH=/app/data/shagram.db
+      - JWT_SECRET=${JWT_SECRET}
+    volumes:
+      - shagram_data:/app/data
+    expose:
+      - "8080"
+
+  nginx:
+    image: nginx:alpine
+    container_name: shagram-nginx
+    ports:
+      - "80:80"
+      - "443:443"
+    volumes:
+      - ./nginx/conf.d:/etc/nginx/conf.d:ro
+      - ./nginx/certs:/etc/nginx/certs:ro
+    depends_on:
+      - shagram
+volumes:
+  shagram_data:

deploy/shagram/nginx/certs/README.md

@@ -0,0 +1,39 @@
+# TLS Certificates for Nginx (Development / Self-Signed)
+
+In production, TLS certificates are typically issued by a trusted Certificate Authority (for example, via Let’s Encrypt). For local development and demo environments, a self-signed certificate can be used.
+
+## Generate a self-signed certificate (Linux/macOS)
+
+From the repository root:
+
+```bash
+mkdir -p deploy/shagram/nginx/certs
+
+openssl req -x509 -newkey rsa:4096 \
+  -keyout deploy/shagram/nginx/certs/key.pem \
+  -out deploy/shagram/nginx/certs/cert.pem \
+  -sha256 -days 365 -nodes \
+  -subj "/C=RU/ST=Moscow/L=Korolyov/O=Shagram/CN=localhost"
+```
+
+## Verify
+
+```bash
+openssl x509 -in deploy/shagram/nginx/certs/cert.pem -noout -text | head
+```
+
+## Expected files
+
+The Nginx configuration expects these files to exist:
+
+- `deploy/shagram/nginx/certs/cert.pem`
+- `deploy/shagram/nginx/certs/key.pem`
+
+## Usage
+
+After generating the certificate, start the deployment:
+
+```bash
+cd deploy/shagram
+docker compose up -d
+```

docker-compose.yml

@@ -1,26 +0,0 @@
-version: '3.8'
-
-services:
-  shagram:
-    build: .
-    ports:
-      - "8080"
-    volumes:
-      - ./data:/app/data
-      - ./static:/app/static
-      - ./migrations:/app/migrations
-    environment:
-      - DATABASE_PATH=/app/shagram.db
-    container_name: shagram-app
-
-  nginx:
-    image: nginx:alpine
-    ports:
-      - "80:80"
-      - "443:443"
-    volumes:
-      - ./nginx/conf.d/default.conf:/etc/nginx/conf.d/default.conf
-      - ./nginx/certs:/etc/nginx/certs
-    depends_on:
-      - shagram
-    container_name: shagram-nginx

go.mod

@@ -14,6 +14,7 @@ require (
 	github.com/go-playground/validator/v10 v10.27.0 // indirect
 	github.com/goccy/go-json v0.10.2 // indirect
 	github.com/goccy/go-yaml v1.18.0 // indirect
+	github.com/golang-jwt/jwt/v5 v5.3.0 // indirect
 	github.com/gorilla/websocket v1.5.3 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect

go.sum

@@ -22,6 +22,8 @@ github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
 github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
 github.com/goccy/go-yaml v1.18.0 h1:8W7wMFS12Pcas7KU+VVkaiCng+kG8QiFeFwzFb+rwuw=
 github.com/goccy/go-yaml v1.18.0/go.mod h1:XBurs7gK8ATbW4ZPGKgcbrY1Br56PdM69F7LkFRi1kA=
+github.com/golang-jwt/jwt/v5 v5.3.0 h1:pv4AsKCKKZuqlgs5sUmn4x8UlGa0kEVt/puTpKx9vvo=
+github.com/golang-jwt/jwt/v5 v5.3.0/go.mod h1:fxCRLWMO43lRc8nhHWY6LGqRcf+1gQWArsqaEUEa5bE=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
 github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=

infra/jenkins/README.md

@@ -0,0 +1,80 @@
+# Jenkins Controller + Docker Agent (Docker Compose)
+
+This directory contains a minimal Jenkins setup running as Docker containers:
+- `jenkins-controller`: Jenkins UI + configuration (no builds should run here).
+- `jenkins-agent-docker`: inbound agent used for Docker-based pipelines (label: `docker-agent`).
+
+The goal is to keep the controller responsible for orchestration/configuration while all CI jobs run on the dedicated agent.
+
+## Prerequisites
+- Docker Engine installed on the host.
+- Docker Compose available as `docker compose`.
+- A host directory `/opt/shagram` (used by pipelines as a shared location for source code and deployment files).
+
+## Start Jenkins
+From the repository root:
+
+```bash
+cd infra/jenkins
+docker compose up -d
+docker compose ps
+```
+
+Jenkins UI will be available at:
+
+```text
+http://<server-ip>:8080
+```
+
+## Initial admin password
+Retrieve the initial password:
+
+```bash
+docker exec -it jenkins-controller \
+  cat /var/jenkins_home/secrets/initialAdminPassword
+```
+
+## Disable builds on the controller
+To ensure builds do not run on the controller:
+1. Open Jenkins UI.
+2. Go to: `Manage Jenkins` → `Manage Nodes and Clouds`.
+3. Open: `Built-In Node` → `Configure`.
+4. Set **Number of executors** to `0`.
+5. Save.
+
+## Configure the inbound agent node
+Create a dedicated node for running pipelines:
+1. `Manage Jenkins` → `Manage Nodes and Clouds` → `New Node`.
+2. Set:
+   - Node name: `docker-agent`
+   - Type: `Permanent Agent`
+   - Remote root directory: `/home/jenkins/agent`
+   - Labels: `docker-agent` (must match your Jenkinsfile `agent { label ... }`)
+   - Usage: “Only build jobs with label expressions matching this node”
+3. Save.
+
+After saving, open the agent page:
+- `Manage Nodes and Clouds` → `docker-agent`
+
+On that page Jenkins will show the inbound connection details, including the **secret** required by the inbound agent container.
+
+## Set agent secret in Compose
+Edit `infra/jenkins/compose.yaml` and replace the placeholder with the real secret value shown on the `docker-agent` node page:
+
+- `JENKINS_SECRET=PASTE_ME`
+
+Then restart only the agent container:
+
+```bash
+docker compose up -d --force-recreate jenkins-agent-docker
+docker logs -f jenkins-agent-docker
+```
+
+Verification:
+- In Jenkins UI, the node `docker-agent` should become **Online**.
+- Any pipeline using `agent { label 'docker-agent' }` should execute on this agent.
+
+## Security note
+The Docker agent mounts `/var/run/docker.sock`, which effectively grants high-level control over the Docker host.
+
+Use this setup only in trusted environments and limit access to Jenkins accordingly.

infra/jenkins/compose.yaml

@@ -0,0 +1,37 @@
+services:
+  jenkins-controller:
+    image: jenkins/jenkins:lts-jdk17
+    container_name: jenkins-controller
+    ports:
+      - "8080:8080"
+    volumes:
+      - jenkins_home:/var/jenkins_home
+    restart: unless-stopped
+  
+  jenkins-agent-docker:
+    image: jenkins/inbound-agent:latest-jdk17
+    container_name: jenkins-agent-docker
+    user: "1000:1000"
+    group_add:
+      - "988"
+    environment:
+      - JENKINS_URL=http://jenkins-controller:8080
+      - JENKINS_AGENT_NAME=docker-agent
+      - JENKINS_SECRET=0c92dc0b807b3c7213cd2abcec4f88182aa8f4fb2233ca9c674f17fd771fe662
+      - AGENT_WORKDIR=/home/jenkins/agent
+    volumes:
+      - agent_workdir:/home/jenkins/agent
+      - /var/run/docker.sock:/var/run/docker.sock
+      - /usr/bin/docker:/usr/bin/docker
+      - /usr/libexec/docker/cli-plugins:/usr/libexec/docker/cli-plugins:ro
+      - /opt/shagram:/opt/shagram
+
+    restart: unless-stopped
+    depends_on:
+      - jenkins-controller
+
+volumes:
+  jenkins_home:
+    external: true
+    name: jenkins_jenkins_home
+  agent_workdir:

internal/api/websocket.go

@@ -3,15 +3,30 @@ package api
 import (
 	"log"
 	"net/http"
+	"os"
+	"shagram/internal/auth"
 	"shagram/internal/db"
 	"shagram/internal/websocket"
+	"strings"
 
 	"github.com/gin-gonic/gin"
 	gws "github.com/gorilla/websocket"
 )
 
 var upgrader = gws.Upgrader{
-	CheckOrigin: func(r *http.Request) bool { return true },
+	CheckOrigin: func(r *http.Request) bool {
+		origin := r.Header.Get("Origin")
+		if origin == "" {
+			return false
+		}
+		allowed := strings.Split(os.Getenv("WS_ALLOWED_ORIGINS"), ",")
+		for _, a := range allowed {
+			if strings.TrimSpace(a) == origin {
+				return true
+			}
+		}
+		return false
+	},
 }
 
 func WebSocketHandler(hub *websocket.Hub, database *db.DB) gin.HandlerFunc {
@@ -19,6 +34,19 @@ func WebSocketHandler(hub *websocket.Hub, database *db.DB) gin.HandlerFunc {
 		roomID := c.Param("room")
 		room := hub.GetOrCreateRoom(roomID)
 
+		tokenString := c.Query("token")
+		if tokenString == "" {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "missing token"})
+			return
+		}
+
+		claims, err := auth.ParseAccessToken(tokenString)
+		if err != nil {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "invalid token"})
+			return
+		}
+		username := claims.Username
+
 		conn, err := upgrader.Upgrade(c.Writer, c.Request, nil)
 		if err != nil {
 			return
@@ -35,25 +63,24 @@ func WebSocketHandler(hub *websocket.Hub, database *db.DB) gin.HandlerFunc {
 
 			for {
 				var msg map[string]string
-				err := client.Conn.ReadJSON(&msg)
-				if err != nil {
+				if err := client.Conn.ReadJSON(&msg); err != nil {
 					break
 				}
-				user := msg["user"]
-				if user == "" {
-					user = "Anonymous"
+
+				text := msg["text"]
+				if text == "" {
+					continue
 				}
+
 				_, err = database.Exec(`
 					INSERT INTO messages (room_id, user, text)
-					VALUES (?, ?, ?)`, roomID, user, msg["text"])
+					VALUES (?, ?, ?)`, roomID, username, text)
 				if err != nil {
 					log.Printf("Save message error: %v", err)
 				}
-				formattedMsg := user + ": " + msg["text"]
-				message := []byte(formattedMsg)
-				room.Broadcast(message)
+
+				room.Broadcast([]byte(username + ": " + text))
 			}
 		}()
 	}
-
 }

internal/auth/jwt.go

@@ -0,0 +1,64 @@
+package auth
+
+import (
+	"errors"
+	"os"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+)
+
+type Claims struct {
+	Username string `json:"username"`
+	jwt.RegisteredClaims
+}
+
+func secret() ([]byte, error) {
+	s := os.Getenv("JWT_SECRET")
+	if s == "" {
+		return nil, errors.New("JWT_SECRET is not set")
+	}
+	return []byte(s), nil
+}
+
+func NewAccessToken(username string, ttl time.Duration) (string, error) {
+	key, err := secret()
+	if err != nil {
+		return "", err
+	}
+	now := time.Now()
+	claims := Claims{
+		Username: username,
+		RegisteredClaims: jwt.RegisteredClaims{
+			Subject:   username,
+			IssuedAt:  jwt.NewNumericDate(now),
+			ExpiresAt: jwt.NewNumericDate(now.Add(ttl)),
+		},
+	}
+
+	t := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	return t.SignedString(key)
+}
+
+func ParseAccessToken(tokenString string) (*Claims, error) {
+	key, err := secret()
+	if err != nil {
+		return nil, err
+	}
+
+	token, err := jwt.ParseWithClaims(tokenString, &Claims{}, func(token *jwt.Token) (any, error) {
+		return key, nil
+	},
+		jwt.WithValidMethods([]string{jwt.SigningMethodHS256.Alg()}),
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	claims, ok := token.Claims.(*Claims)
+	if !ok || !token.Valid {
+		return nil, errors.New("invalid token")
+	}
+
+	return claims, nil
+}

internal/auth/middleware.go

@@ -0,0 +1,41 @@
+package auth
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+const CtxUsernameKey = "username"
+
+func Middleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		h := c.GetHeader("Authorization")
+		if h == "" {
+			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "missing Authorization header"})
+			return
+		}
+
+		const prefix = "Bearer "
+		if !strings.HasPrefix(h, prefix) {
+			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "expected Bearer token"})
+			return
+		}
+
+		raw := strings.TrimSpace(strings.TrimPrefix(h, prefix))
+		if raw == "" {
+			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "empty token"})
+			return
+		}
+
+		claims, err := ParseAccessToken(raw)
+		if err != nil {
+			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "invalid token"})
+			return
+		}
+
+		c.Set(CtxUsernameKey, claims.Username)
+		c.Next()
+	}
+}

nginx/certs/cert.pem

@@ -1,22 +0,0 @@
------BEGIN CERTIFICATE-----
-MIIDjzCCAnegAwIBAgIUG1Qc10mXTy5+Zuh1COAK6fqAl34wDQYJKoZIhvcNAQEL
-BQAwVzELMAkGA1UEBhMCUlUxDzANBgNVBAgMBk1vc2NvdzERMA8GA1UEBwwIS29y
-b2x5b3YxEDAOBgNVBAoMB1NoYWdyYW0xEjAQBgNVBAMMCWxvY2FsaG9zdDAeFw0y
-NjAxMTQwMTMxNDhaFw0yNzAxMTQwMTMxNDhaMFcxCzAJBgNVBAYTAlJVMQ8wDQYD
-VQQIDAZNb3Njb3cxETAPBgNVBAcMCEtvcm9seW92MRAwDgYDVQQKDAdTaGFncmFt
-MRIwEAYDVQQDDAlsb2NhbGhvc3QwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEK
-AoIBAQDLOB4WybryG6Cc4yU+2PPrLiM/tt15HMVp0TgcA277vofYFd90IArihbmG
-KEaKYyZplUzxk55RRNS6BaAroZb0AWEg8cOid83gbnuKKaIUhjz/CDADPnnRWynb
-PHjVuvIBtPLgyunbtB6U7a6JLP2nA8XaTcDFtLrhy8PTKFZ9fLRBXzxW8ZvNnL4i
-FSLQYe851dOfJ1m0HwA/meK8QWfYn01O8zprleSMo+HPIudRR6ySnx/Cy3LuAcqM
-sjttf6EFWs9XTiAOIbKC4M8VbOrfZjXFz45ljD0tZNziJ2g61lmdJAV8ElwZ6SDP
-fGTwGjWj5Qx9Lg7qdFqjVyE0QFBJAgMBAAGjUzBRMB0GA1UdDgQWBBSd7S5Xngb4
-9eeBbmTCslblkWClRDAfBgNVHSMEGDAWgBSd7S5Xngb49eeBbmTCslblkWClRDAP
-BgNVHRMBAf8EBTADAQH/MA0GCSqGSIb3DQEBCwUAA4IBAQA8Lx0PAhfYRuRYuQxV
-EyU4pmQ6JuAPl3gxVKHY6bFGMYooSRr5Nw/YulfPucxTKHtVlgY/l0kwofmTUh3B
-Df1tulFCCmBW4zbl6cHd7TVSEJBkV7R9AqAC49ni8mVhmo3uPuARFa+mR8ATrF4y
-LWlO/2n7F5g+093CqOG3b4O76PlqAl6L/z/Z+UBoMVEyiPgfxAztucsBn7oOaQwG
-g6ohX2kosC2uRsc1bAofHWW0u3tFY0i6oiI7XPF9REuWJOiDlN2PsDMXhSG5xeLj
-e7LUOQsNXB5deAfUFxbtEDCnEDzyp+GxXwZ0iPsJOzm2ccL6XdDzucCuR/NtuhGf
-KwpD
------END CERTIFICATE-----

nginx/certs/key.pem

@@ -1,28 +0,0 @@
------BEGIN PRIVATE KEY-----
-MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQDLOB4WybryG6Cc
-4yU+2PPrLiM/tt15HMVp0TgcA277vofYFd90IArihbmGKEaKYyZplUzxk55RRNS6
-BaAroZb0AWEg8cOid83gbnuKKaIUhjz/CDADPnnRWynbPHjVuvIBtPLgyunbtB6U
-7a6JLP2nA8XaTcDFtLrhy8PTKFZ9fLRBXzxW8ZvNnL4iFSLQYe851dOfJ1m0HwA/
-meK8QWfYn01O8zprleSMo+HPIudRR6ySnx/Cy3LuAcqMsjttf6EFWs9XTiAOIbKC
-4M8VbOrfZjXFz45ljD0tZNziJ2g61lmdJAV8ElwZ6SDPfGTwGjWj5Qx9Lg7qdFqj
-VyE0QFBJAgMBAAECggEALgf0UtOXd6M35omSBHIWkBknjVVRxc71TYKBS+EgOMA/
-23ua3Z4rcQN60k9ZqRuL1iMmJls6Y2yspcVD8lYcEAGm+1Qf7PNnrBRCgflrt+vv
-MZJsc7OpWrlkWf9Q3JLHogjXcgEsZyJdwfyzielpvDS/0nLFvVKyeRZTcUdEDhCz
-MoY3tqcZVwq1k+CsW5Z8C1DZaEwgwhEXNGPgfX7R86FSNwlNmcTKJG/YHb9xBA84
-O109pfe9PsQnYB9Lw+CNPHl1v6wIMRlVZZMFPevBJq+r9d8iN6dsX7c4oR8SXDDS
-4Shux9RNE8XyD6HOTK+QuEvJmZmPIFjnlVZIsVkpHQKBgQD5bfeh7En+VPdHFGTg
-+0o1ZSYrfvErak8zP7DoLZF4EY6CK20uZ8ou09ebWXZQfC37PliOSMJyDG70PuXc
-Rh/TfnUPkPbmyRrvQi+MAsIjCEYGk2iiMQvSVs099AB6oAQetyPm2AcT4HeGNaLM
-m1gurXTCelV0yT7oL7IhI6AqRQKBgQDQkoenTQ1nnvA4ghN253c+mbJWvTX+lbo9
-WicOAxmA9gp/VN7NErXbgr5FcMwPtT+yLDqDgSjLp2T9ClYt/laWcO/KYwrnP9o5
-DTeSB+biEAd3GHJLWJApY/dmFZey5uza+hXvlTdVCUgvFJYGgHw/Dg5E+jvUwrNT
-MNN/OnpQNQKBgAtxxz3vuIlp3pqtTd+gyAvhIzo1rd0fGJkyX+yXQqhurco9MdpC
-Ot2hLLBdD3er6vQvLSMCJaHT/jdIt4U+1nD+yWI4dYurSIgX0lSrP7sZwxTEKLXg
-aDlzcCFak7cMpoO+RXBvEwwPbYyD439d1VL29HeD423jWfaPUa4Bk3S9AoGAWGdj
-PBQ6tEr3wtvPaDyfnFcE8iLsueW4tLx7hULnEnQ26tWMQhvGHS6De2dd9uJ6Bwkc
-HBUot3lSIra45HHDPazM1lm4i1/THQ9vGGRlBjiJEX+5Ihp9sC2A9TH9xISArCgI
-GC6E73QptlrhZAwdnZRVlAMETR/hZkdxvaGJqmkCgYEAzHpqhLMFwOOvDr5Ya2DW
-5IGSCohsNBRvPKLSXlMIT1yMfRStsp5qQrZq2Oj2xXX7Jk3jf+1lU3ZQ5O6bI6br
-9MhrVKu6qI8YS3OtSDPAUOzPw1zu4yaKyCO0eNghY51PTZd3A3JA8Uh9Si7OCryD
-iHnkhUQ1iasZLdnubyVUuh0=
------END PRIVATE KEY-----

static/index.html

@@ -4,18 +4,18 @@
     <title>Shagram Chat</title>
     <style>
         body { font-family: Arial; margin: 20px; }
-        #messages { 
-            height: 300px; 
-            border: 1px solid #ccc; 
-            overflow-y: auto; 
-            padding: 10px; 
+        #messages {
+            height: 300px;
+            border: 1px solid #ccc;
+            overflow-y: auto;
+            padding: 10px;
             margin-bottom: 10px;
             background: #f9f9f9;
         }
-        .message { 
-            margin: 5px 0; 
-            padding: 8px; 
-            background: #e3f2fd; 
+        .message {
+            margin: 5px 0;
+            padding: 8px;
+            background: #e3f2fd;
             border-radius: 5px;
             border-left: 3px solid #2196F3;
         }
@@ -23,25 +23,29 @@
         button { padding: 8px 15px; cursor: pointer; }
         select { padding: 8px; width: 320px; }
         #roomsList { margin: 10px 0; }
+        #authStatus { margin-left: 10px; }
     </style>
 </head>
 <body>
     <h1>📱 Shagram Chat</h1>
-    
+
     <div id="roomsList">
         <select id="roomSelect">
             <option value="general">general</option>
         </select>
+
         <input type="text" id="userInput" placeholder="Your name" value="Эмиль" maxlength="20">
+        <button onclick="login()">Login</button>
+        <span id="authStatus"></span>
+
         <button onclick="loadRooms()">🔄</button>
         <button onclick="connectRoom()">Connect</button>
     </div>
 
-    
     <div id="messages"></div>
-    
+
     <div>
-        <input type="text" id="messageInput" placeholder="Type message..." 
+        <input type="text" id="messageInput" placeholder="Type message..."
                onkeypress="if(event.key==='Enter') sendMessage()">
         <button onclick="sendMessage()">Send</button>
     </div>

static/js/chat.js

@@ -1,71 +1,103 @@
 let ws = null;
+let accessToken = null;
+
 const messagesDiv = document.getElementById('messages');
 const messageInput = document.getElementById('messageInput');
 const roomSelect = document.getElementById('roomSelect');
+const authStatus = document.getElementById('authStatus');
+
+async function login() {
+    const usernameInput = document.getElementById('userInput');
+    const username = usernameInput ? usernameInput.value.trim() : '';
+
+    if (!username) {
+        alert('Enter username');
+        return;
+    }
+
+    authStatus.textContent = 'Logging in...';
+
+    const resp = await fetch('/api/auth/login', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ username }),
+    });
+
+    if (!resp.ok) {
+        const text = await resp.text();
+        authStatus.textContent = 'Login failed';
+        console.error('Login failed:', resp.status, text);
+        return;
+    }
+
+    const data = await resp.json();
+    accessToken = data.access_token || null;
+
+    if (!accessToken) {
+        authStatus.textContent = 'Login failed';
+        return;
+    }
+
+    authStatus.textContent = '✅ Logged in';
+}
 
 function loadRooms() {
     fetch('/api/rooms')
-    .then(response => response.json())
-    .then(data => {
-        roomSelect.innerHTML = '';
-        data.rooms.forEach(room => {
-            const option = document.createElement('option');
-            option.value = room;
-            option.textContent = room;
-            roomSelect.appendChild(option);
+        .then(response => response.json())
+        .then(data => {
+            roomSelect.innerHTML = '';
+            (data.rooms || []).forEach(room => {
+                const option = document.createElement('option');
+                option.value = room;
+                option.textContent = room;
+                roomSelect.appendChild(option);
+            });
+        })
+        .catch(error => {
+            console.error('Error loading rooms:', error);
         });
-    })
-    .catch(error => {
-        console.error('Error loading rooms:', error);
-    })
 }
 
 function connectRoom() {
     const room = roomSelect.value || 'general';
     const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
-    
+    const host = window.location.host;
+
+    if (!accessToken) {
+        alert('Please login first');
+        return;
+    }
+
     if (ws) {
         ws.close();
     }
 
-    ws = new WebSocket(`${protocol}//localhost:8080/ws/${room}`);
-
-    
+    const wsUrl = `${protocol}//${host}/ws/${room}?token=${encodeURIComponent(accessToken)}`;
+    ws = new WebSocket(wsUrl);
 
     ws.onopen = function() {
-        console.log('WebSocket connected, loading history for', room);
-
         fetch(`/api/messages/${room}`)
-            .then(response => {
-                console.log('API response:', response.status);
-                return response.json()
-            })
+            .then(response => response.json())
             .then(data => {
-                console.log('History data:', data);
                 messagesDiv.innerHTML = '';
                 const history = data.messages || [];
-                console.log('history length:', history.length);
                 if (history.length > 0) {
-                    history.reverse().forEach((msg, index) => {
-                        console.log(`Message ${index}:`, msg)
+                    history.reverse().forEach(msg => {
                         const msgDiv = document.createElement('div');
                         msgDiv.className = 'message';
                         msgDiv.textContent = `${msg.user}: ${msg.text}`;
                         messagesDiv.appendChild(msgDiv);
-                    })
+                    });
                 }
                 const connectMsg = document.createElement('div');
                 connectMsg.className = 'message';
                 connectMsg.textContent = `✅ Connected to ${room}`;
                 messagesDiv.appendChild(connectMsg);
                 messagesDiv.scrollTop = messagesDiv.scrollHeight;
-                console.log('History loaded!');
             })
             .catch(error => {
-                console.error('❌ History error', error);
-            })
-
-        
+                console.error('History error', error);
+            });
     };
 
     ws.onmessage = function(event) {
@@ -88,19 +120,14 @@ function connectRoom() {
 
 function sendMessage() {
     const text = messageInput.value.trim();
-    const usernameInput = document.getElementById('userInput');
-    const username = usernameInput ? usernameInput.value.trim() || 'Anonymous' : 'Anonymous';
 
     if (!text || !ws || ws.readyState !== WebSocket.OPEN) {
         alert('Not connected or empty message');
         return;
     }
-    
-    ws.send(JSON.stringify({
-        text: text,
-        user: username,
-        }));
+
+    ws.send(JSON.stringify({ text }));
     messageInput.value = '';
 }
 
-loadRooms();
+loadRooms();