package main

import (
	"errors"
	"fmt"
	"net/http"
	"runtime/debug"

	"github.com/go-playground/form/v4"
)

func (app *application) serverError(w http.ResponseWriter, err error) {
	trace := fmt.Sprintf("%s\n%s", err.Error(), debug.Stack())
	app.errorLog.Output(2, trace)

	var errorText string
	if app.debug {
		errorText = trace
	} else {
		errorText = http.StatusText(http.StatusInternalServerError)
	}
	http.Error(w, errorText, http.StatusInternalServerError)
}

func (app *application) clientError(w http.ResponseWriter, status int) {
	http.Error(w, http.StatusText(status), status)
}

func (app *application) notFound(w http.ResponseWriter) {
	app.clientError(w, http.StatusNotFound)
}

func (app *application) decodePostForm(r *http.Request, templateForm any) error {
	err := r.ParseForm()
	if err != nil {
		return err
	}

	err = app.formDecoder.Decode(&templateForm, r.PostForm)
	if err != nil {
		var invalidDecoderError *form.InvalidDecoderError
		if errors.As(err, &invalidDecoderError) {
			panic("Invalid decoder error")
		}
		return err
	}
	return nil
}

func (app *application) isAuthenticated(r *http.Request) bool {
	isAuthenticated, ok := r.Context().Value(isAuthenticatedContextKey).(bool)
	if !ok {
		return false
	}
	return isAuthenticated
}