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server.go
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server.go
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package main
import (
"log"
"net/http"
"os"
"github.com/go-chi/chi"
"github.com/go-chi/chi/middleware"
"github.com/go-chi/jwtauth"
"gorm.io/gorm"
)
// Contains pointers to the database connection and token auth info.
type Config struct {
DB *gorm.DB
TokenAuth *jwtauth.JWTAuth
}
// Setup and Start the server
func main() {
var config Config
// These variable are here for easy demonstration.
// It's not good to have it hardcoded for security issues.
port := "8080"
dsn := "go-talk.db"
jwtSecret := "go-servers"
if fromEnv := os.Getenv("PORT"); fromEnv != "" {
port = fromEnv
}
if fromEnv := os.Getenv("DB_DSN"); fromEnv != "" {
dsn = fromEnv
}
if fromEnv := os.Getenv("JWT_SECRET"); fromEnv != "" {
jwtSecret = fromEnv
}
config.TokenAuth = jwtauth.New("HS256", []byte(jwtSecret), nil)
// Setup log server activity
f, err := os.OpenFile("server.log", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
log.Fatal(err)
}
log.SetOutput(f)
// Setup data base
db, err := DBConnect(dsn)
if err != nil {
log.Fatalf("db conn failure: %v", err)
}
config.DB = db
err = config.EnsureDBSetup()
if err != nil {
log.Fatalf("db setup failure: %v", err)
}
// Setup routes with end points
router := config.SetupRoutes()
log.Printf("Starting up on http://localhost:%s", port)
log.Println(http.ListenAndServe(":"+port, router))
}
// Creates the router and define end-points.
func (c *Config) SetupRoutes() *chi.Mux {
r := chi.NewRouter()
r.Use(middleware.Logger)
r.Get("/", IndexHandler)
r.Post("/newuser", c.NewUserPostHandler)
r.Post("/login", c.LoginPostHandler)
r.Route("/", func(r chi.Router) {
r.Use(jwtauth.Verifier(c.TokenAuth))
r.Use(jwtauth.Authenticator)
r.Get("/chat", APIChatHandler)
r.Route("/api", func(r chi.Router) {
r.Get("/messages", c.APIMessagesHandler)
r.Post("/messages", c.APIMessagesPostHandler)
})
})
return r
}