newsbox/actions/users.go

package actions

import (
	"encoding/json"
	"fmt"

	"github.com/gobuffalo/buffalo"
	"github.com/gobuffalo/pop/v6"
	"github.com/pkg/errors"

	"newsbox/internal"
	"newsbox/mill"
	"newsbox/models"
	"newsbox/workers"
)

// UsersNew renders the users form
func UsersNew(c buffalo.Context) error {
	u := models.User{}
	c.Set("user", u)
	return c.Render(200, r.HTML("users/new.plush.html"))
}

// UsersCreate registers a new user with the application.
func UsersCreate(c buffalo.Context) error {
	u := &models.User{}
	if err := c.Bind(u); err != nil {
		return errors.WithStack(err)
	}

	tx := c.Value("tx").(*pop.Connection)
	verrs, err := u.Create(tx)
	if err != nil {
		return errors.WithStack(err)
	}

	if verrs.HasAny() {
		c.Set("user", u)
		c.Set("errors", verrs)
		return c.Render(200, r.HTML("users/new.plush.html"))
	}

	uev := &models.UserEmailVerification{OwnerID: u.ID}
	err = tx.Save(uev)
	if err != nil {
		return errors.WithStack(err)
	}

	invitationAddr := u.Email.Interface().(string)
	params := mill.WelcomeEmailJob{
		Recipient:       invitationAddr,
		VerificationURL: fmt.Sprintf("%s/users/email_verification/%s", internal.BaseUrl(), uev.ID),
	}
	paramsJSON, _ := json.Marshal(params)

	_, err = workers.W.EnqueueJob("welcome_emails", paramsJSON)
	if err != nil {
		c.Redirect(302, "/")
		return err
	}

	c.Flash().Add("success", fmt.Sprintf("Email verification sent to: %s", invitationAddr))

	return c.Redirect(302, "/")
}

// SetCurrentUser attempts to find a user based on the current_user_id
// in the session. If one is found it is set on the context.
func SetCurrentUser(next buffalo.Handler) buffalo.Handler {
	return func(c buffalo.Context) error {
		if uid := c.Session().Get("current_user_id"); uid != nil {
			u := &models.User{}
			tx := c.Value("tx").(*pop.Connection)
			err := tx.Find(u, uid)
			if err != nil {
				c.Session().Set("current_user_id", nil)
				return next(c)
			} else {
				c.Set("current_user", u)
			}
		}
		return next(c)
	}
}

// Authorize require a user be logged in before accessing a route
func Authorize(next buffalo.Handler) buffalo.Handler {
	return func(c buffalo.Context) error {
		if uid := c.Session().Get("current_user_id"); uid == nil {
			c.Session().Set("redirectURL", c.Request().URL.String())

			err := c.Session().Save()
			if err != nil {
				return errors.WithStack(err)
			}

			c.Flash().Add("danger", "You must be authorized to see that page")
			return c.Redirect(302, "/login")
		}
		return next(c)
	}
}