initialized db and connection

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
         uses: golangci/golangci-lint-action@v2
         with:
           version: latest
-          args: --config=.golangci.yml
+          args: --config=.golangci.yml --fix
 
   test:
     runs-on: ubuntu-latest

.golangci.yml

@@ -11,14 +11,11 @@ linters:
   enable:
     - asciicheck
     - bodyclose
-    - deadcode
-    - depguard
     - dogsled
     - dupl
     - durationcheck
     - errorlint
     - exhaustive
-    - exportloopref
     - funlen
     - gci
     - gocognit
@@ -35,7 +32,6 @@ linters:
     - gosec
     - gosimple
     - govet
-    - ifshort
     - importas
     - ineffassign
     - lll
@@ -51,7 +47,6 @@ linters:
     - rowserrcheck
     - sqlclosecheck
     - staticcheck
-    - structcheck
     - stylecheck
     - tagliatelle
     - thelper
@@ -60,6 +55,5 @@ linters:
     - unconvert
     - unparam
     - unused
-    - varcheck
     - wastedassign
     - whitespace

database/db.go

@@ -0,0 +1,25 @@
+package database
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/jmoiron/sqlx"
+	"github.com/joho/godotenv"
+	_ "github.com/lib/pq" // Регистрация драйвера PostgreSQL
+)
+
+func InitDB() (*sqlx.DB, error) {
+	err := godotenv.Load("./.env")
+	if err != nil {
+		return nil, fmt.Errorf("error loading .env file: %w", err)
+	}
+
+	db, err := sqlx.Connect("postgres", os.Getenv("DATABASE_URL"))
+	if err != nil {
+		return nil, fmt.Errorf("error connecting to database: %w", err)
+	}
+
+	fmt.Println("Successfully connected to the database")
+	return db, nil
+}

docker-compose.yml

@@ -0,0 +1,14 @@
+services:
+  db:
+    image: postgres:latest
+    container_name: notes_app_db
+    environment:
+      POSTGRES_USER: ${APP_DB_USER}
+      POSTGRES_PASSWORD: ${APP_DB_PASSWORD}
+      POSTGRES_DB: ${APP_DB_NAME}
+    ports:
+      - "${APP_DB_PORT}:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+volumes:
+  postgres_data:

go.mod

@@ -1,3 +1,14 @@
 module NotesWebApp
 
 go 1.23.4
+
+require (
+	github.com/gorilla/mux v1.8.1
+	github.com/gorilla/sessions v1.4.0
+	github.com/jmoiron/sqlx v1.4.0
+	github.com/joho/godotenv v1.5.1
+	github.com/lib/pq v1.10.9
+	golang.org/x/crypto v0.32.0
+)
+
+require github.com/gorilla/securecookie v1.1.2 // indirect

go.sum

@@ -0,0 +1,22 @@
+filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
+filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
+github.com/go-sql-driver/mysql v1.8.1 h1:LedoTUt/eveggdHS9qUFC1EFSa8bU2+1pZjSRpvNJ1Y=
+github.com/go-sql-driver/mysql v1.8.1/go.mod h1:wEBSXgmK//2ZFJyE+qWnIsVGmvmEKlqwuVSjsCm7DZg=
+github.com/google/gofuzz v1.2.0 h1:xRy4A+RhZaiKjJ1bPfwQ8sedCA+YS2YcCHW6ec7JMi0=
+github.com/google/gofuzz v1.2.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
+github.com/gorilla/mux v1.8.1 h1:TuBL49tXwgrFYWhqrNgrUNEY92u81SPhu7sTdzQEiWY=
+github.com/gorilla/mux v1.8.1/go.mod h1:AKf9I4AEqPTmMytcMc0KkNouC66V3BtZ4qD5fmWSiMQ=
+github.com/gorilla/securecookie v1.1.2 h1:YCIWL56dvtr73r6715mJs5ZvhtnY73hBvEF8kXD8ePA=
+github.com/gorilla/securecookie v1.1.2/go.mod h1:NfCASbcHqRSY+3a8tlWJwsQap2VX5pwzwo4h3eOamfo=
+github.com/gorilla/sessions v1.4.0 h1:kpIYOp/oi6MG/p5PgxApU8srsSw9tuFbt46Lt7auzqQ=
+github.com/gorilla/sessions v1.4.0/go.mod h1:FLWm50oby91+hl7p/wRxDth9bWSuk0qVL2emc7lT5ik=
+github.com/jmoiron/sqlx v1.4.0 h1:1PLqN7S1UYp5t4SrVVnt4nUVNemrDAtxlulVe+Qgm3o=
+github.com/jmoiron/sqlx v1.4.0/go.mod h1:ZrZ7UsYB/weZdl2Bxg6jCRO9c3YHl8r3ahlKmRT4JLY=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
+github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
+github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
+github.com/mattn/go-sqlite3 v1.14.22 h1:2gZY6PC6kBnID23Tichd1K+Z0oS6nE/XwU+Vz/5o4kU=
+github.com/mattn/go-sqlite3 v1.14.22/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
+golang.org/x/crypto v0.32.0 h1:euUpcYgM8WcP71gNpTqQCn6rC2t6ULUPiOzfWaXVVfc=
+golang.org/x/crypto v0.32.0/go.mod h1:ZnnJkOaASj8g0AjIduWNlq2NRxL0PlBrbKVyZ6V/Ugc=

handlers/auth_handler.go

@@ -0,0 +1,131 @@
+package handlers
+
+import (
+	"html/template"
+	"log"
+	"net/http"
+
+	"github.com/jmoiron/sqlx"
+	"golang.org/x/crypto/bcrypt"
+
+	"NotesWebApp/models"
+)
+
+type AuthHandler struct {
+	DB *sqlx.DB
+}
+
+func NewAuthHandler(db *sqlx.DB) *AuthHandler {
+	return &AuthHandler{DB: db}
+}
+
+func (ah *AuthHandler) Index(w http.ResponseWriter, r *http.Request) {
+	session, err := store.Get(r, sessionName)
+	if err != nil {
+		http.Error(w, "Failed to get session", http.StatusBadRequest)
+	}
+	_, ok := session.Values["userID"].(int)
+	if !ok {
+		http.Redirect(w, r, "/login", http.StatusSeeOther)
+		return
+	}
+
+	http.Redirect(w, r, "/notes", http.StatusFound)
+}
+
+func (ah *AuthHandler) LoginForm(w http.ResponseWriter, _ *http.Request) {
+	tmpl := template.Must(template.ParseFiles("templates/login.html"))
+	err := tmpl.Execute(w, nil)
+	if err != nil {
+		log.Println("Error while executing login.html template:", err)
+		return
+	}
+}
+
+func (ah *AuthHandler) Login(w http.ResponseWriter, r *http.Request) {
+	email := r.FormValue("email")
+	password := r.FormValue("password")
+
+	user, err := models.GetUserByEmail(ah.DB, email)
+	if err != nil {
+		http.Error(w, "User not found: invalid credentials", http.StatusUnauthorized)
+	}
+
+	if err := bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(password)); err != nil {
+		http.Error(w, "Wrong password", http.StatusUnauthorized)
+		return
+	}
+
+	session, err := store.Get(r, sessionName)
+	if err != nil {
+		log.Printf("Failed to get session: %v", err)
+
+		http.Error(w, "Failed to get session", http.StatusBadRequest)
+		return
+	}
+	session.Values["userID"] = user.ID
+	err = session.Save(r, w)
+	if err != nil {
+		log.Println("Can't save session:", err)
+		return
+	}
+	log.Println("User logged in successfully:", user.ID)
+	http.Redirect(w, r, "/notes", http.StatusFound)
+}
+
+func (ah *AuthHandler) RegisterForm(w http.ResponseWriter, _ *http.Request) {
+	tmpl := template.Must(template.ParseFiles("templates/register.html"))
+	err := tmpl.Execute(w, nil)
+	if err != nil {
+		log.Println("Error while executing register.html template:", err)
+		return
+	}
+}
+
+func (ah *AuthHandler) Register(w http.ResponseWriter, r *http.Request) {
+	email := r.FormValue("email")
+	password := r.FormValue("password")
+
+	hashedPassword, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+	if err != nil {
+		log.Printf("Failed to hash password for user %s: %v", email, err)
+
+		http.Error(w, "Internal server error: failed to process password", http.StatusInternalServerError)
+		return
+	}
+
+	user := models.User{
+		Email:    email,
+		Password: string(hashedPassword),
+	}
+
+	if err := user.CreateUser(ah.DB); err != nil {
+		log.Printf("Failed to create user %s: %v", email, err)
+
+		http.Error(w, "Internal server error: failed to create user", http.StatusInternalServerError)
+		return
+	}
+
+	log.Printf("user created %+v", user)
+
+	http.Redirect(w, r, "/login", http.StatusSeeOther)
+}
+
+func (ah *AuthHandler) Logout(w http.ResponseWriter, r *http.Request) {
+	session, err := store.Get(r, sessionName)
+	if err != nil {
+		http.Error(w, "Failed to get session", http.StatusInternalServerError)
+		return
+	}
+
+	session.Values = make(map[interface{}]interface{}) // удаляем все
+	session.Options.MaxAge = -1                        // ставим срок действия сессии в прошлое (удаление сессии)
+
+	err = session.Save(r, w)
+	if err != nil {
+		http.Error(w, "Failed to save session", http.StatusInternalServerError)
+		return
+	}
+
+	http.Redirect(w, r, "/", http.StatusFound)
+}