smtp + email confirmation (#285)

* add smtp configuration

* add email confirm + reset templates

* add email sender to testrig

* flesh out the email sender interface

* go fmt

* golint

* update from field with more clarity

* tidy up the email formatting

* fix tests

* add email sender to processor

* tidy client api processing a bit

* further tidying in fromClientAPI

* pin new account to user

* send msg to processor on new account creation

* generate confirm email uri

* remove emailer from account processor again

* add processCreateAccountFromClientAPI

* move emailer accountprocessor => userprocessor

* add email sender to user processor

* SendConfirmEmail function

* add noop email sender

* use noop email sender in tests

* only assemble message if callback is not nil

* use noop email sender if no smtp host is defined

* minify email html before sending

* fix wrong email address

* email confirm test

* fmt

* serve web hndler

* add email confirm handler

* init test log properly on testrig

* log emails that *would* have been sent

* go fmt ./...

* unexport confirm email handler

* updatedAt

* test confirm email function

* don't allow tokens older than 7 days

* change error message a bit

* add basic smtp docs

* add a few more snippets

* typo

* add email sender to outbox tests

* don't use dutch wikipedia link

* don't minify email html

internal/processing/account/create.go

@@ -21,10 +21,13 @@ package account
 import (
 	"context"
 	"fmt"
+
 	"github.com/sirupsen/logrus"
 
+	"github.com/superseriousbusiness/gotosocial/internal/ap"
 	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/messages"
 	"github.com/superseriousbusiness/gotosocial/internal/text"
 	"github.com/superseriousbusiness/oauth2/v4"
 )
@@ -66,6 +69,23 @@ func (p *processor) Create(ctx context.Context, applicationToken oauth2.TokenInf
 		return nil, fmt.Errorf("error creating new access token for user %s: %s", user.ID, err)
 	}
 
+	if user.Account == nil {
+		a, err := p.db.GetAccountByID(ctx, user.AccountID)
+		if err != nil {
+			return nil, fmt.Errorf("error getting new account from the database: %s", err)
+		}
+		user.Account = a
+	}
+
+	// there are side effects for creating a new account (sending confirmation emails etc)
+	// so pass a message to the processor so that it can do it asynchronously
+	p.fromClientAPI <- messages.FromClientAPI{
+		APObjectType:   ap.ObjectProfile,
+		APActivityType: ap.ActivityCreate,
+		GTSModel:       user.Account,
+		OriginAccount:  user.Account,
+	}
+
 	return &apimodel.Token{
 		AccessToken: accessToken.GetAccess(),
 		TokenType:   "Bearer",