Notifications (#34)

Notifications working for:

* Mentions
* Faves
* New follow requests
* New followers

internal/message/fromcommonprocess.go

@@ -18,16 +18,143 @@
 
 package message
 
-import "github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+import (
+	"fmt"
+
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+)
 
 func (p *processor) notifyStatus(status *gtsmodel.Status) error {
+	// if there are no mentions in this status then just bail
+	if len(status.Mentions) == 0 {
+		return nil
+	}
+
+	if status.GTSMentions == nil {
+		// there are mentions but they're not fully populated on the status yet so do this
+		menchies := []*gtsmodel.Mention{}
+		for _, m := range status.Mentions {
+			gtsm := &gtsmodel.Mention{}
+			if err := p.db.GetByID(m, gtsm); err != nil {
+				return fmt.Errorf("notifyStatus: error getting mention with id %s from the db: %s", m, err)
+			}
+			menchies = append(menchies, gtsm)
+		}
+		status.GTSMentions = menchies
+	}
+
+	// now we have mentions as full gtsmodel.Mention structs on the status we can continue
+	for _, m := range status.GTSMentions {
+		// make sure this is a local account, otherwise we don't need to create a notification for it
+		if m.GTSAccount == nil {
+			a := &gtsmodel.Account{}
+			if err := p.db.GetByID(m.TargetAccountID, a); err != nil {
+				// we don't have the account or there's been an error
+				return fmt.Errorf("notifyStatus: error getting account with id %s from the db: %s", m.TargetAccountID, err)
+			}
+			m.GTSAccount = a
+		}
+		if m.GTSAccount.Domain != "" {
+			// not a local account so skip it
+			continue
+		}
+
+		// make sure a notif doesn't already exist for this mention
+		err := p.db.GetWhere([]db.Where{
+			{Key: "notification_type", Value: gtsmodel.NotificationMention},
+			{Key: "target_account_id", Value: m.TargetAccountID},
+			{Key: "origin_account_id", Value: status.AccountID},
+			{Key: "status_id", Value: status.ID},
+		}, &gtsmodel.Notification{})
+		if err == nil {
+			// notification exists already so just continue
+			continue
+		}
+		if _, ok := err.(db.ErrNoEntries); !ok {
+			// there's a real error in the db
+			return fmt.Errorf("notifyStatus: error checking existence of notification for mention with id %s : %s", m.ID, err)
+		}
+
+		// if we've reached this point we know the mention is for a local account, and the notification doesn't exist, so create it
+		notif := &gtsmodel.Notification{
+			NotificationType: gtsmodel.NotificationMention,
+			TargetAccountID:  m.TargetAccountID,
+			OriginAccountID:  status.AccountID,
+			StatusID:         status.ID,
+		}
+
+		if err := p.db.Put(notif); err != nil {
+			return fmt.Errorf("notifyStatus: error putting notification in database: %s", err)
+		}
+	}
+
 	return nil
 }
 
-func (p *processor) notifyFollow(follow *gtsmodel.Follow) error {
+func (p *processor) notifyFollowRequest(followRequest *gtsmodel.FollowRequest, receivingAccount *gtsmodel.Account) error {
+	// return if this isn't a local account
+	if receivingAccount.Domain != "" {
+		return nil
+	}
+
+	notif := &gtsmodel.Notification{
+		NotificationType: gtsmodel.NotificationFollowRequest,
+		TargetAccountID:  followRequest.TargetAccountID,
+		OriginAccountID:  followRequest.AccountID,
+	}
+
+	if err := p.db.Put(notif); err != nil {
+		return fmt.Errorf("notifyFollowRequest: error putting notification in database: %s", err)
+	}
+
 	return nil
 }
 
-func (p *processor) notifyFave(fave *gtsmodel.StatusFave) error {
-   return nil
+func (p *processor) notifyFollow(follow *gtsmodel.Follow, receivingAccount *gtsmodel.Account) error {
+	// return if this isn't a local account
+	if receivingAccount.Domain != "" {
+		return nil
+	}
+
+	// first remove the follow request notification
+	if err := p.db.DeleteWhere([]db.Where{
+		{Key: "notification_type", Value: gtsmodel.NotificationFollowRequest},
+		{Key: "target_account_id", Value: follow.TargetAccountID},
+		{Key: "origin_account_id", Value: follow.AccountID},
+	}, &gtsmodel.Notification{}); err != nil {
+		return fmt.Errorf("notifyFollow: error removing old follow request notification from database: %s", err)
+	}
+
+	// now create the new follow notification
+	notif := &gtsmodel.Notification{
+		NotificationType: gtsmodel.NotificationFollow,
+		TargetAccountID:  follow.TargetAccountID,
+		OriginAccountID:  follow.AccountID,
+	}
+	if err := p.db.Put(notif); err != nil {
+		return fmt.Errorf("notifyFollow: error putting notification in database: %s", err)
+	}
+
+	return nil
+}
+
+func (p *processor) notifyFave(fave *gtsmodel.StatusFave, receivingAccount *gtsmodel.Account) error {
+	// return if this isn't a local account
+	if receivingAccount.Domain != "" {
+		return nil
+	}
+
+	notif := &gtsmodel.Notification{
+		NotificationType: gtsmodel.NotificationFave,
+		TargetAccountID:  fave.TargetAccountID,
+		OriginAccountID:  fave.AccountID,
+		StatusID:         fave.StatusID,
+	}
+
+	if err := p.db.Put(notif); err != nil {
+		return fmt.Errorf("notifyFave: error putting notification in database: %s", err)
+	}
+
+	return nil
 }