package controllers

import (
	"fmt"
	"net/http"
	"strings"

	"congo.gg/web/models"
	"congo.gg/pkg/application"
)

func MailingList() (string, *MailingListController) {
	return "mailing_list", &MailingListController{}
}

type MailingListController struct {
	application.BaseController
}

func (c *MailingListController) Setup(app *application.App) {
	c.BaseController.Setup(app)
	http.Handle("POST /subscribe", app.Method(c, "Subscribe", nil))
}

func (c MailingListController) Handle(r *http.Request) application.Controller {
	c.Request = r
	return &c
}

func (c *MailingListController) Subscribe(w http.ResponseWriter, r *http.Request) {
	email := strings.TrimSpace(r.FormValue("email"))
	parts := strings.SplitN(email, "@", 2)
	if len(parts) != 2 || parts[0] == "" || !strings.Contains(parts[1], ".") || len(email) > 254 {
		c.RenderError(w, r, fmt.Errorf("please enter a valid email address"))
		return
	}

	sub := &models.Subscriber{Email: email}
	if _, err := models.Subscribers.Insert(sub); err != nil {
		if strings.Contains(err.Error(), "UNIQUE") {
			c.RenderError(w, r, fmt.Errorf("already subscribed"))
			return
		}
		c.RenderError(w, r, err)
		return
	}

	c.Render(w, r, "subscribe-success.html", nil)
}