feat: 0.0.1

cmd/api/main.go

@@ -0,0 +1,300 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"net"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/hibiken/asynq"
+	"github.com/rs/cors"
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+	"golang.org/x/sync/errgroup"
+
+	"github.com/FernandoJVideira/simple_bank/internal/auth"
+	"github.com/FernandoJVideira/simple_bank/internal/config"
+	db "github.com/FernandoJVideira/simple_bank/internal/db/sqlc"
+	gapi "github.com/FernandoJVideira/simple_bank/internal/handlers/grpc"
+	api "github.com/FernandoJVideira/simple_bank/internal/handlers/http"
+	"github.com/FernandoJVideira/simple_bank/internal/mailer"
+	"github.com/FernandoJVideira/simple_bank/internal/service"
+	"github.com/FernandoJVideira/simple_bank/internal/worker"
+	"github.com/FernandoJVideira/simple_bank/pb"
+
+	"github.com/golang-migrate/migrate/v4"
+	_ "github.com/golang-migrate/migrate/v4/database/postgres"
+	_ "github.com/golang-migrate/migrate/v4/source/file"
+	"github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
+	"github.com/jackc/pgx/v5/pgxpool"
+	_ "github.com/jackc/pgx/v5/stdlib"
+	"github.com/rakyll/statik/fs"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/reflection"
+	"google.golang.org/protobuf/encoding/protojson"
+
+	_ "github.com/FernandoJVideira/simple_bank/docs/statik"
+)
+
+var interruptSignals = []os.Signal{
+	os.Interrupt,
+	syscall.SIGTERM,
+	syscall.SIGINT,
+}
+
+// @title Simple Bank API
+// @version 1.0
+// @description API for Simple Bank application
+// @termsOfService http://swagger.io/terms/
+
+// @contact.name API Support
+// @contact.email [email protected]
+
+// @license.name MIT
+// @license.url https://opensource.org/licenses/MIT
+
+// @host localhost:8080
+// @BasePath /v1
+// @schemes http https
+
+// @securityDefinitions.apikey BearerAuth
+// @in header
+// @name Authorization
+// @description Type "Bearer" followed by a space and JWT token.
+func main() {
+	config, err := config.LoadConfig(".")
+	if err != nil {
+		log.Fatal().Err(err).Msg("cannot load config")
+	}
+
+	if config.Environment == "development" {
+		log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr})
+	}
+
+	ctx, cancel := signal.NotifyContext(context.Background(), interruptSignals...)
+	defer cancel()
+
+	connPool, err := pgxpool.New(ctx, config.DBAddr)
+	if err != nil {
+		log.Fatal().Err(err).Msg("cannot connect to db")
+	}
+
+	runDBMigration(config.MigrationURL, config.DBAddr)
+
+	redisOpt := asynq.RedisClientOpt{
+		Addr:     config.RedisAddr,
+		Password: config.RedisPassword,
+		DB:       config.RedisDB,
+	}
+
+	taskDist := worker.NewRedisTaskDistributor(redisOpt)
+	store := db.NewPostgresStore(connPool)
+
+	tokenMaker, err := auth.NewPasetoMaker(config)
+	if err != nil {
+		log.Fatal().Err(err).Msg("cannot create token maker")
+	}
+
+	userService := service.NewUserService(store, taskDist)
+	authService := service.NewAuthService(store, tokenMaker, config)
+
+	wg, ctx := errgroup.WithContext(ctx)
+
+	runGinServer(ctx, wg, config, store, taskDist, tokenMaker, userService, authService)
+	runTaskProcessor(ctx, wg, redisOpt, store, config)
+	//runGatewayServer(ctx, wg, config, store, taskDist, tokenMaker, userService, authService)
+	//runGrpcServer(ctx, wg, config, store, taskDist, tokenMaker, userService, authService)
+
+	err = wg.Wait()
+	if err != nil {
+		log.Fatal().Err(err).Msg("application terminated with error")
+	}
+}
+
+func runTaskProcessor(ctx context.Context, wg *errgroup.Group, redisOpt asynq.RedisClientOpt, store db.Store, config config.Config) {
+	mailer := mailer.NewGmailSender(config.EmailSenderName, config.EmailSender, config.EmailPassword)
+	taskProcessor := worker.NewRedisTaskProcessor(redisOpt, store, mailer, config)
+	log.Info().Msg("start task processor")
+	if err := taskProcessor.Start(); err != nil {
+		log.Fatal().Err(err).Msg("cannot start task processor")
+	}
+
+	wg.Go(func() error {
+		<-ctx.Done()
+		log.Info().Msg("gracefully shutting down task processor")
+		taskProcessor.Shutdown()
+		log.Info().Msg("task processor shut down")
+		return nil
+	})
+}
+
+func runDBMigration(migrationURL, dbSource string) {
+	migration, err := migrate.New(migrationURL, dbSource)
+	if err != nil {
+		log.Fatal().Err(err).Msg("cannot create new migrate instance")
+	}
+
+	if err = migration.Up(); err != nil && err != migrate.ErrNoChange {
+		log.Fatal().Err(err).Msg("failed to run migrate up")
+	}
+
+	log.Info().Msg("db migrated successfully")
+}
+
+func runGinServer(ctx context.Context, wg *errgroup.Group, config config.Config, store db.Store, td worker.TaskDistributor, tokenMaker auth.Maker, userService service.UserService, authService service.AuthService) {
+	s, err := api.NewServer(config, store, td, tokenMaker, userService, authService)
+	if err != nil {
+		log.Fatal().Err(err).Msg("cannot create server")
+	}
+
+	wg.Go(func() error {
+		err = s.Start(config.HTTPServerAddr)
+		if err != nil {
+			log.Fatal().Err(err).Msg("cannot start server:")
+			return err
+		}
+		return nil
+	})
+
+	wg.Go(func() error {
+		<-ctx.Done()
+		log.Info().Msg("shutting down server")
+		err := s.Shutdown(ctx)
+		if err != nil {
+			log.Error().Err(err).Msg("cannot shutdown server")
+			return err
+		}
+		log.Info().Msg("server shut down")
+		return nil
+	})
+}
+
+func runGrpcServer(ctx context.Context, wg *errgroup.Group, config config.Config, store db.Store, taskDistributor worker.TaskDistributor, tokenMaker auth.Maker, userService service.UserService, authService service.AuthService) {
+	server, err := gapi.NewServer(config, store, taskDistributor, tokenMaker, userService, authService)
+	if err != nil {
+		log.Fatal().Err(err).Msg("cannot create server:")
+	}
+
+	grpcLogger := grpc.UnaryInterceptor(gapi.GrpcLogger)
+
+	grpcServer := grpc.NewServer(grpcLogger)
+	pb.RegisterSimpleBankServer(grpcServer, server)
+	reflection.Register(grpcServer)
+
+	listener, err := net.Listen("tcp", config.GrpcServerAddr)
+	if err != nil {
+		log.Fatal().Err(err).Msg("cannot create listener")
+	}
+
+	wg.Go(func() error {
+		log.Info().Msgf("start gRPC server at %s", listener.Addr().String())
+		err = grpcServer.Serve(listener)
+		if err != nil {
+			if errors.Is(err, grpc.ErrServerStopped) {
+				return nil
+			}
+			log.Error().Err(err).Msg("gRPC server failed to serve")
+			return err
+		}
+		return nil
+	})
+
+	wg.Go(func() error {
+		<-ctx.Done()
+		log.Info().Msg("gracefully shutting down gRPC server")
+		grpcServer.GracefulStop()
+		log.Info().Msg("gRPC server shut down")
+		return nil
+	})
+}
+
+func runGatewayServer(ctx context.Context, wg *errgroup.Group, config config.Config, store db.Store, taskDistributor worker.TaskDistributor, tokenMaker auth.Maker, userService service.UserService, authService service.AuthService) {
+	server, err := gapi.NewServer(config, store, taskDistributor, tokenMaker, userService, authService)
+	if err != nil {
+		log.Fatal().Err(err).Msg("cannot create server:")
+	}
+
+	opts := runtime.WithMarshalerOption(runtime.MIMEWildcard, &runtime.JSONPb{
+		MarshalOptions: protojson.MarshalOptions{
+			UseProtoNames: true,
+		},
+		UnmarshalOptions: protojson.UnmarshalOptions{
+			DiscardUnknown: true,
+		},
+	})
+
+	grpcMux := runtime.NewServeMux(opts)
+
+	err = pb.RegisterSimpleBankHandlerServer(ctx, grpcMux, server)
+	if err != nil {
+		log.Fatal().Err(err).Msg("cannot register handler server")
+	}
+
+	mux := http.NewServeMux()
+	mux.Handle("/", grpcMux)
+
+	statikFS, err := fs.New()
+	if err != nil {
+		log.Fatal().Err(err).Msg("cannot create statik fs")
+	}
+
+	swaggerHandler := http.StripPrefix("/swagger/", http.FileServer(statikFS))
+	mux.Handle("/swagger/", swaggerHandler)
+
+	c := cors.New(
+		cors.Options{
+			AllowedOrigins: config.AllowedOrigins,
+			AllowedMethods: []string{
+				http.MethodGet,
+				http.MethodPost,
+				http.MethodPut,
+				http.MethodPatch,
+				http.MethodDelete,
+				http.MethodOptions,
+			},
+			AllowedHeaders: []string{
+				"Accept",
+				"Authorization",
+				"Content-Type",
+				"X-CSRF-Token",
+			},
+			AllowCredentials: true,
+			Debug:            config.Environment == "development",
+		},
+	)
+	handler := c.Handler(gapi.HTTPLogger(mux))
+	httpServer := &http.Server{
+		Handler: handler,
+		Addr:    config.HTTPServerAddr,
+	}
+
+	wg.Go(func() error {
+		log.Info().Msgf("start HTTP gateway server at %s", httpServer.Addr)
+
+		err = httpServer.ListenAndServe()
+		if err != nil {
+			if errors.Is(err, http.ErrServerClosed) {
+				return nil
+			}
+			log.Error().Err(err).Msg("cannot start http gateway server")
+			return err
+		}
+		return nil
+	})
+
+	wg.Go(func() error {
+		<-ctx.Done()
+		log.Info().Msg("gracefully shutting down HTTP gateway server")
+		err := httpServer.Shutdown(context.Background())
+		if err != nil {
+			log.Error().Err(err).Msg("cannot shut down http gateway server")
+			return err
+		}
+		log.Info().Msg("HTTP gateway server shut down")
+		return nil
+	})
+
+}

cmd/db/migrations/000001_init_schema.down.sql

@@ -0,0 +1,3 @@
+DROP TABLE IF EXISTS "users";
+DROP TABLE IF EXISTS "verify_emails";
+DROP TABLE IF EXISTS "sessions";

cmd/db/migrations/000001_init_schema.up.sql

@@ -0,0 +1,39 @@
+-- SQL dump generated using DBML (dbml.dbdiagram.io)
+-- Database: PostgreSQL
+-- Generated at: 2025-11-30T03:13:20.470Z
+
+CREATE TABLE "users" (
+  "username" varchar PRIMARY KEY,
+  "role" varchar NOT NULL DEFAULT 'member',
+  "hashed_password" varchar NOT NULL,
+  "full_name" varchar NOT NULL,
+  "email" varchar UNIQUE NOT NULL,
+  "is_email_verified" bool NOT NULL DEFAULT false,
+  "password_changed_at" timestamptz NOT NULL DEFAULT '0001-01-01',
+  "created_at" timestamptz NOT NULL DEFAULT (now())
+);
+
+CREATE TABLE "verify_emails" (
+  "id" bigserial PRIMARY KEY,
+  "username" varchar NOT NULL,
+  "email" varchar NOT NULL,
+  "secret_code" varchar NOT NULL,
+  "is_used" bool NOT NULL DEFAULT false,
+  "created_at" timestamptz NOT NULL DEFAULT (now()),
+  "expired_at" timestamptz NOT NULL DEFAULT (now() + interval '15 minutes')
+);
+
+CREATE TABLE "sessions" (
+  "id" uuid PRIMARY KEY,
+  "username" varchar NOT NULL,
+  "refresh_token" varchar NOT NULL,
+  "user_agent" varchar NOT NULL,
+  "client_ip" varchar NOT NULL,
+  "is_blocked" boolean NOT NULL DEFAULT false,
+  "expires_at" timestamptz NOT NULL,
+  "created_at" timestamptz NOT NULL DEFAULT (now())
+);
+
+ALTER TABLE "verify_emails" ADD FOREIGN KEY ("username") REFERENCES "users" ("username");
+
+ALTER TABLE "sessions" ADD FOREIGN KEY ("username") REFERENCES "users" ("username");

cmd/db/query/sessions.sql

@@ -0,0 +1,17 @@
+-- name: CreateSession :one
+INSERT INTO sessions (
+    id,
+    username,
+    refresh_token,
+    user_agent,
+    client_ip,
+    is_blocked,
+    expires_at
+) VALUES (
+  $1, $2, $3, $4, $5, $6, $7
+)
+RETURNING *;
+
+-- name: GetSession :one
+SELECT * FROM sessions
+WHERE id = $1 LIMIT 1;

cmd/db/query/user.sql

@@ -0,0 +1,25 @@
+-- name: CreateUser :one
+INSERT INTO users (
+    username,
+    hashed_password,
+    full_name,
+    email
+) VALUES (
+  $1, $2, $3, $4
+)
+RETURNING *;
+
+-- name: GetUser :one
+SELECT * FROM users
+WHERE username = $1 LIMIT 1;
+
+-- name: UpdateUser :one
+UPDATE users
+SET
+    hashed_password = COALESCE(sqlc.narg('hashed_password'), hashed_password),
+    password_changed_at = COALESCE(sqlc.narg('password_changed_at'), password_changed_at),
+    full_name = COALESCE(sqlc.narg('full_name'), full_name),
+    email = COALESCE(sqlc.narg('email'), email),
+    is_email_verified = COALESCE(sqlc.narg('is_email_verified'), is_email_verified)
+WHERE username = sqlc.arg('username')
+RETURNING *;

cmd/db/query/verify_email.sql

@@ -0,0 +1,21 @@
+-- name: CreateVerifyEmail :one
+INSERT INTO verify_emails (
+    username,
+    email,
+    secret_code
+    ) VALUES (
+    $1, $2, $3
+    )
+RETURNING *;
+
+
+-- name: UpdateVerifyEmail :one
+UPDATE verify_emails
+SET
+    is_used = TRUE
+WHERE
+    id = @id
+    AND secret_code = @secret_code
+    AND is_used = FALSE
+    AND expired_at > NOW()
+RETURNING *;