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path: root/main.go
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package main

import (
	"context"
	"log"
	"net/http"
	"os"

	"github.com/go-chi/chi/v5"
	"github.com/go-chi/chi/v5/middleware"
	"github.com/jackc/pgx/v5/pgxpool"
	"github.com/joho/godotenv"

	"gosten/csrf"
	"gosten/pages"
	"gosten/session"
)

func checkEnvEntry(e string) {
	if os.Getenv(e) == "" {
		log.Fatalf("Variable '%s' not set", e)
	}
}

func checkEnv() {
	checkEnvEntry("GOSTEN_DSN")
	checkEnvEntry("GOSTEN_ADDRESS")
}

func main() {
	if err := godotenv.Load(); err != nil {
		log.Fatal("Loading env file: ", err)
	}

	checkEnv()

	db, err := pgxpool.New(context.Background(), os.Getenv("GOSTEN_DSN"))
	if err != nil {
		log.Fatal(err)
	}
	if err := db.Ping(context.Background()); err != nil {
		log.Fatal(err)
	}
	defer db.Close()

	pages.Connect(db)

	router := chi.NewRouter()

	// A good base middleware stack
	router.Use(middleware.RequestID)
	router.Use(middleware.RealIP)
	router.Use(middleware.CleanPath)
	router.Use(middleware.Logger)
	router.Use(middleware.Recoverer)

	// handlers that DO NOT require authentification
	router.Handle("/static/*", http.StripPrefix("/static", http.FileServer(http.Dir("static"))))
	router.Get("/favicon.ico", http.NotFound)

	appRouter := router.With(csrf.Handler(), session.Handler())
	appRouter.Get("/login", pages.Login())
	appRouter.Post("/login", pages.HandleLogin)
	appRouter.Get("/logout", pages.Logout())

	authRouter := appRouter.With(pages.RequireAuth)
	authRouter.Mount("/", pages.Init())
	authRouter.Mount("/recur", pages.Recur())
	authRouter.Mount("/categories", pages.Categories())
	authRouter.NotFound(pages.NotFound())

	log.Fatal(http.ListenAndServe(os.Getenv("GOSTEN_ADDRESS"), router))
}