initial commit

.gitignore

@@ -0,0 +1,23 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+
+# Other
+.idea
+.DS_Store
+.env

README.md

@@ -0,0 +1 @@
+# genesis-api-project

cmd/api/main.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"flag"
+	"github.com/vladyslavpavlenko/genesis-api-project/internal/config"
+	"log"
+	"net/http"
+)
+
+var app config.AppConfig
+
+func main() {
+	err := setup(&app)
+	if err != nil {
+		log.Fatal()
+	}
+
+	addr := flag.String("addr", ":8080", "the api address")
+	flag.Parse()
+
+	log.Printf("Running on port %s", *addr)
+
+	srv := &http.Server{
+		Addr:    *addr,
+		Handler: routes(&app),
+	}
+
+	err = srv.ListenAndServe()
+	if err != nil {
+		log.Panic(err)
+	}
+}

cmd/api/routes.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+	"github.com/go-chi/chi"
+	"github.com/go-chi/chi/v5/middleware"
+	"github.com/go-chi/cors"
+	"github.com/vladyslavpavlenko/genesis-api-project/internal/config"
+	"github.com/vladyslavpavlenko/genesis-api-project/internal/handlers"
+	"net/http"
+)
+
+func routes(app *config.AppConfig) http.Handler {
+	mux := chi.NewRouter()
+	mux.Use(middleware.Logger)
+
+	mux.Use(cors.Handler(cors.Options{
+		AllowedOrigins:   []string{"https://*", "http://*"},
+		AllowedMethods:   []string{"GET", "POST", "PUT", "DELETE", "OPTIONS"},
+		AllowedHeaders:   []string{"Accept", "Authorization", "Content-Type", "X-CSRF-Token"},
+		ExposedHeaders:   []string{"Link"},
+		AllowCredentials: true,
+		MaxAge:           300,
+	}))
+
+	mux.Get("/rate", handlers.Repo.GetRate)
+	mux.Post("/subscribe", handlers.Repo.Subscribe)
+	mux.Post("/sendEmails", handlers.Repo.SendEmails)
+
+	return mux
+}

cmd/api/setup.go

@@ -0,0 +1,69 @@
+package main
+
+import (
+	"fmt"
+	"github.com/joho/godotenv"
+	"github.com/vladyslavpavlenko/genesis-api-project/internal/config"
+	"github.com/vladyslavpavlenko/genesis-api-project/internal/handlers"
+	"gorm.io/driver/postgres"
+	"gorm.io/gorm"
+	"log"
+	"os"
+)
+
+func setup(app *config.AppConfig) error {
+	// Get environment variables
+	env, err := loadEvnVariables()
+	if err != nil {
+		return err
+	}
+
+	app.Env = env
+
+	// Connect to the database and run migrations
+	db, err := connectToPostgresAndMigrate(env)
+	if err != nil {
+		return err
+	}
+
+	app.DB = db
+
+	repo := handlers.NewRepo(app)
+	handlers.NewHandlers(repo)
+	render.NewRenderer(app)
+
+	return nil
+}
+
+// loadEvnVariables loads variables from the .env file.
+func loadEvnVariables() (*config.EnvVariables, error) {
+	err := godotenv.Load()
+	if err != nil {
+		return nil, fmt.Errorf("error getting environment variables: %v", err)
+	}
+
+	postgresHost := os.Getenv("POSTGRES_HOST")
+	postgresUser := os.Getenv("POSTGRES_USER")
+	postgresPass := os.Getenv("POSTGRES_PASS")
+	postgresDBName := os.Getenv("POSTGRES_DBNAME")
+	jwtSecret := os.Getenv("JWT_SECRET")
+
+	return &config.EnvVariables{
+		PostgresHost:   postgresHost,
+		PostgresUser:   postgresUser,
+		PostgresPass:   postgresPass,
+		PostgresDBName: postgresDBName,
+	}, nil
+}
+
+// connectToPostgresAndMigrate initializes a PostgreSQL db session and runs GORM migrations.
+func connectToPostgresAndMigrate(env *config.EnvVariables) (*gorm.DB, error) {
+	dsn := fmt.Sprintf("host=%s user=%s dbname=%s password=%s sslmode=disable",
+		env.PostgresHost, env.PostgresUser, env.PostgresDBName, env.PostgresPass)
+	db, err := gorm.Open(postgres.Open(dsn), &gorm.Config{})
+	if err != nil {
+		log.Fatal("could not connect: ", err)
+	}
+
+	return db, nil
+}

go.mod

@@ -0,0 +1,19 @@
+module github.com/vladyslavpavlenko/genesis-api-project
+
+go 1.22.2
+
+require (
+	github.com/go-chi/chi v1.5.5 // indirect
+	github.com/go-chi/chi/v5 v5.0.12 // indirect
+	github.com/go-chi/cors v1.2.1 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a // indirect
+	github.com/jackc/pgx/v5 v5.4.3 // indirect
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/jinzhu/now v1.1.5 // indirect
+	github.com/joho/godotenv v1.5.1 // indirect
+	golang.org/x/crypto v0.14.0 // indirect
+	golang.org/x/text v0.13.0 // indirect
+	gorm.io/driver/postgres v1.5.7 // indirect
+	gorm.io/gorm v1.25.10 // indirect
+)

go.sum

@@ -0,0 +1,33 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/go-chi/chi v1.5.5 h1:vOB/HbEMt9QqBqErz07QehcOKHaWFtuj87tTDVz2qXE=
+github.com/go-chi/chi v1.5.5/go.mod h1:C9JqLr3tIYjDOZpzn+BCuxY8z8vmca43EeMgyZt7irw=
+github.com/go-chi/chi/v5 v5.0.12 h1:9euLV5sTrTNTRUU9POmDUvfxyj6LAABLUcEWO+JJb4s=
+github.com/go-chi/chi/v5 v5.0.12/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8=
+github.com/go-chi/cors v1.2.1 h1:xEC8UT3Rlp2QuWNEr4Fs/c2EAGVKBwy/1vHx3bppil4=
+github.com/go-chi/cors v1.2.1/go.mod h1:sSbTewc+6wYHBBCW7ytsFSn836hqM7JxpglAy2Vzc58=
+github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
+github.com/jackc/pgpassfile v1.0.0/go.mod h1:CEx0iS5ambNFdcRtxPj5JhEz+xB6uRky5eyVu/W2HEg=
+github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a h1:bbPeKD0xmW/Y25WS6cokEszi5g+S0QxI/d45PkRi7Nk=
+github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a/go.mod h1:5TJZWKEWniPve33vlWYSoGYefn3gLQRzjfDlhSJ9ZKM=
+github.com/jackc/pgx/v5 v5.4.3 h1:cxFyXhxlvAifxnkKKdlxv8XqUf59tDlYjnV5YYfsJJY=
+github.com/jackc/pgx/v5 v5.4.3/go.mod h1:Ig06C2Vu0t5qXC60W8sqIthScaEnFvojjj9dSljmHRA=
+github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD/E=
+github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
+github.com/jinzhu/now v1.1.5 h1:/o9tlHleP7gOFmsnYNz3RGnqzefHA47wQpKrrdTIwXQ=
+github.com/jinzhu/now v1.1.5/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+golang.org/x/crypto v0.14.0 h1:wBqGXzWJW6m1XrIKlAH0Hs1JJ7+9KBwnIO8v66Q9cHc=
+golang.org/x/crypto v0.14.0/go.mod h1:MVFd36DqK4CsrnJYDkBA3VC4m2GkXAM0PvzMCn4JQf4=
+golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
+golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gorm.io/driver/postgres v1.5.7 h1:8ptbNJTDbEmhdr62uReG5BGkdQyeasu/FZHxI0IMGnM=
+gorm.io/driver/postgres v1.5.7/go.mod h1:3e019WlBaYI5o5LIdNV+LyxCMNtLOQETBXL2h4chKpA=
+gorm.io/gorm v1.25.10 h1:dQpO+33KalOA+aFYGlK+EfxcI5MbO7EP2yYygwh9h+s=
+gorm.io/gorm v1.25.10/go.mod h1:hbnx/Oo0ChWMn1BIhpy1oYozzpM15i4YPuHDmfYtwg8=

internal/config/config.go

@@ -0,0 +1,19 @@
+package config
+
+import (
+	"gorm.io/gorm"
+)
+
+// AppConfig holds the application config.
+type AppConfig struct {
+	DB  *gorm.DB
+	Env *EnvVariables
+}
+
+// EnvVariables holds environment variables used in the application.
+type EnvVariables struct {
+	PostgresHost   string
+	PostgresUser   string
+	PostgresPass   string
+	PostgresDBName string
+}

internal/handlers/handlers.go

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+package handlers
+
+import "github.com/vladyslavpavlenko/genesis-api-project/internal/config"
+
+type jsonResponse struct {
+	Error   bool   `json:"error"`
+	Message string `json:"message,omitempty"`
+	Data    any    `json:"data,omitempty"`
+}
+
+// Repo the repository used by the handlers
+var Repo *Repository
+
+// Repository is the repository type
+type Repository struct {
+	App *config.AppConfig
+}
+
+// NewRepo creates a new repository
+func NewRepo(a *config.AppConfig) *Repository {
+	return &Repository{
+		App: a,
+	}
+}
+
+// NewTestRepo creates a new test repository
+func NewTestRepo(a *config.AppConfig) *Repository {
+	return &Repository{
+		App: a,
+	}
+}
+
+// NewHandlers sets the repository for handlers
+func NewHandlers(r *Repository) {
+	Repo = r
+}