package main

import (
	"net/http"
	"os"

	"github.com/joho/godotenv"
	"github.com/labstack/echo"
	"github.com/labstack/echo/middleware"
)

func main() {
	godotenv.Load()
	defer db.Close()

	e := echo.New()

	// Frontend URL for CORS
	frontendURL := os.Getenv("BASE_URL")
	if frontendURL == "" {
		frontendURL = "http://localhost:5173"
	}

	// Middleware
	e.Use(middleware.Logger())
	e.Use(middleware.Recover())
	e.Use(middleware.CORSWithConfig(middleware.CORSConfig{
		AllowOrigins:     []string{frontendURL},
		AllowMethods:     []string{http.MethodGet, http.MethodPost, http.MethodPut, http.MethodDelete},
		AllowHeaders:     []string{echo.HeaderOrigin, echo.HeaderContentType, echo.HeaderAccept, echo.HeaderAuthorization},
		AllowCredentials: true,
	}))

	// Health
	e.GET("/", func(c echo.Context) error {
		return c.String(http.StatusOK, "Backend is running alright.\n")
	})

	// Auth
	e.POST("/auth/register", register)
	e.POST("/auth/login", login)
	e.POST("/auth/logout", logout)
	e.GET("/auth/me", getMe, JWTMiddleware)

	// User account management
	user := e.Group("/user", JWTMiddleware)
	user.GET("/stats", getUserStats)
	user.PUT("/username", updateUsername)
	user.PUT("/password", updatePassword)
	user.DELETE("/account", deleteAccount)

	// Public link routes (optional auth for shorten)
	e.POST("/shorten", shortenURL, OptionalJWTMiddleware)
	e.GET("/:code", fetchLURL, OptionalJWTMiddleware)
	e.POST("/:code/verify", verifyAndRedirect)

	// Authenticated link management
	links := e.Group("/links", JWTMiddleware)
	links.GET("", listLinks)
	links.PUT("/:id", updateLink)
	links.DELETE("/:id", deleteLink)

	port := os.Getenv("PORT")
	if port == "" {
		port = "8080"
	}
	e.Logger.Fatal(e.Start(":" + port))
}