[feature] Status thread mute/unmute functionality (#2278)

* add db models + functions for keeping track of threads

* give em the old linty testy

* create, remove, check mutes

* swagger

* testerino

* test mute/unmute via api

* add info log about new index creation

* thread + allow muting of any remote statuses that mention a local account

* IsStatusThreadMutedBy -> IsThreadMutedByAccount

* use common processing functions in status processor

* set = NULL

* favee!

* get rekt darlings, darlings get rekt

* testrig please, have mercy muy liege

17 files changed, 452 insertions, 174 deletions

diff --git a/internal/processing/processor.go b/internal/processing/processor.go
index a24683e69..47f14a686 100644
--- a/internal/processing/processor.go
+++ b/internal/processing/processor.go
@@ -164,7 +164,7 @@ func NewProcessor(
 	processor.report = report.New(state, converter)
 	processor.timeline = timeline.New(state, converter, filter)
 	processor.search = search.New(state, federator, converter, filter)
-	processor.status = status.New(state, federator, converter, filter, parseMentionFunc)
+	processor.status = status.New(&commonProcessor, state, federator, converter, filter, parseMentionFunc)
 	processor.stream = streamProcessor
 	processor.user = user.New(state, emailSender)
 
diff --git a/internal/processing/status/bookmark.go b/internal/processing/status/bookmark.go
index 64e3fc1fd..634529ba4 100644
--- a/internal/processing/status/bookmark.go
+++ b/internal/processing/status/bookmark.go
@@ -29,16 +29,31 @@ import (
 	"github.com/superseriousbusiness/gotosocial/internal/id"
 )
 
+func (p *Processor) getBookmarkableStatus(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*gtsmodel.Status, string, gtserror.WithCode) {
+	targetStatus, errWithCode := p.c.GetVisibleTargetStatus(ctx, requestingAccount, targetStatusID)
+	if errWithCode != nil {
+		return nil, "", errWithCode
+	}
+
+	bookmarkID, err := p.state.DB.GetStatusBookmarkID(ctx, requestingAccount.ID, targetStatus.ID)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		err = fmt.Errorf("getBookmarkTarget: error checking existing bookmark: %w", err)
+		return nil, "", gtserror.NewErrorInternalError(err)
+	}
+
+	return targetStatus, bookmarkID, nil
+}
+
 // BookmarkCreate adds a bookmark for the requestingAccount, targeting the given status (no-op if bookmark already exists).
 func (p *Processor) BookmarkCreate(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*apimodel.Status, gtserror.WithCode) {
-	targetStatus, existingBookmarkID, errWithCode := p.getBookmarkTarget(ctx, requestingAccount, targetStatusID)
+	targetStatus, existingBookmarkID, errWithCode := p.getBookmarkableStatus(ctx, requestingAccount, targetStatusID)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}
 
 	if existingBookmarkID != "" {
 		// Status is already bookmarked.
-		return p.apiStatus(ctx, targetStatus, requestingAccount)
+		return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 	}
 
 	// Create and store a new bookmark.
@@ -57,24 +72,24 @@ func (p *Processor) BookmarkCreate(ctx context.Context, requestingAccount *gtsmo
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	if err := p.invalidateStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
+	if err := p.c.InvalidateTimelinedStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
 		err = gtserror.Newf("error invalidating status from timelines: %w", err)
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	return p.apiStatus(ctx, targetStatus, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 }
 
 // BookmarkRemove removes a bookmark for the requesting account, targeting the given status (no-op if bookmark doesn't exist).
 func (p *Processor) BookmarkRemove(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*apimodel.Status, gtserror.WithCode) {
-	targetStatus, existingBookmarkID, errWithCode := p.getBookmarkTarget(ctx, requestingAccount, targetStatusID)
+	targetStatus, existingBookmarkID, errWithCode := p.getBookmarkableStatus(ctx, requestingAccount, targetStatusID)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}
 
 	if existingBookmarkID == "" {
 		// Status isn't bookmarked.
-		return p.apiStatus(ctx, targetStatus, requestingAccount)
+		return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 	}
 
 	// We have a bookmark to remove.
@@ -83,25 +98,10 @@ func (p *Processor) BookmarkRemove(ctx context.Context, requestingAccount *gtsmo
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	if err := p.invalidateStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
+	if err := p.c.InvalidateTimelinedStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
 		err = gtserror.Newf("error invalidating status from timelines: %w", err)
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	return p.apiStatus(ctx, targetStatus, requestingAccount)
-}
-
-func (p *Processor) getBookmarkTarget(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*gtsmodel.Status, string, gtserror.WithCode) {
-	targetStatus, errWithCode := p.getVisibleStatus(ctx, requestingAccount, targetStatusID)
-	if errWithCode != nil {
-		return nil, "", errWithCode
-	}
-
-	bookmarkID, err := p.state.DB.GetStatusBookmarkID(ctx, requestingAccount.ID, targetStatus.ID)
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		err = fmt.Errorf("getBookmarkTarget: error checking existing bookmark: %w", err)
-		return nil, "", gtserror.NewErrorInternalError(err)
-	}
-
-	return targetStatus, bookmarkID, nil
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 }
diff --git a/internal/processing/status/boost.go b/internal/processing/status/boost.go
index d4bdc3f43..76a0a75bc 100644
--- a/internal/processing/status/boost.go
+++ b/internal/processing/status/boost.go
@@ -85,7 +85,7 @@ func (p *Processor) BoostCreate(ctx context.Context, requestingAccount *gtsmodel
 		TargetAccount:  targetStatus.Account,
 	})
 
-	return p.apiStatus(ctx, boostWrapperStatus, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, boostWrapperStatus)
 }
 
 // BoostRemove processes the unboost/unreblog of a given status, returning the status if all is well.
@@ -129,7 +129,7 @@ func (p *Processor) BoostRemove(ctx context.Context, requestingAccount *gtsmodel
 		})
 	}
 
-	return p.apiStatus(ctx, targetStatus, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 }
 
 // StatusBoostedBy returns a slice of accounts that have boosted the given status, filtered according to privacy settings.
diff --git a/internal/processing/status/common.go b/internal/processing/status/common.go
deleted file mode 100644
index 71eef70a1..000000000
--- a/internal/processing/status/common.go
+++ /dev/null
@@ -1,103 +0,0 @@
-// GoToSocial
-// Copyright (C) GoToSocial Authors admin@gotosocial.org
-// SPDX-License-Identifier: AGPL-3.0-or-later
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package status
-
-import (
-	"context"
-	"fmt"
-
-	"codeberg.org/gruf/go-kv"
-	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
-	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
-	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
-	"github.com/superseriousbusiness/gotosocial/internal/log"
-)
-
-func (p *Processor) apiStatus(ctx context.Context, targetStatus *gtsmodel.Status, requestingAccount *gtsmodel.Account) (*apimodel.Status, gtserror.WithCode) {
-	apiStatus, err := p.converter.StatusToAPIStatus(ctx, targetStatus, requestingAccount)
-	if err != nil {
-		err = gtserror.Newf("error converting status %s to frontend representation: %w", targetStatus.ID, err)
-		return nil, gtserror.NewErrorInternalError(err)
-	}
-
-	return apiStatus, nil
-}
-
-func (p *Processor) getVisibleStatus(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*gtsmodel.Status, gtserror.WithCode) {
-	targetStatus, err := p.state.DB.GetStatusByID(ctx, targetStatusID)
-	if err != nil {
-		err = fmt.Errorf("getVisibleStatus: db error fetching status %s: %w", targetStatusID, err)
-		return nil, gtserror.NewErrorNotFound(err)
-	}
-
-	if requestingAccount != nil {
-		// Ensure the status is up-to-date.
-		p.federator.RefreshStatusAsync(ctx,
-			requestingAccount.Username,
-			targetStatus,
-			nil,
-			false,
-		)
-	}
-
-	visible, err := p.filter.StatusVisible(ctx, requestingAccount, targetStatus)
-	if err != nil {
-		err = fmt.Errorf("getVisibleStatus: error seeing if status %s is visible: %w", targetStatus.ID, err)
-		return nil, gtserror.NewErrorNotFound(err)
-	}
-
-	if !visible {
-		err = fmt.Errorf("getVisibleStatus: status %s is not visible to requesting account", targetStatusID)
-		return nil, gtserror.NewErrorNotFound(err)
-	}
-
-	return targetStatus, nil
-}
-
-// invalidateStatus is a shortcut function for invalidating the prepared/cached
-// representation one status in the home timeline and all list timelines of the
-// given accountID. It should only be called in cases where a status update
-// does *not* need to be passed into the processor via the worker queue, since
-// such invalidation will, in that case, be handled by the processor instead.
-func (p *Processor) invalidateStatus(ctx context.Context, accountID string, statusID string) error {
-	// Get lists first + bail if this fails.
-	lists, err := p.state.DB.GetListsForAccountID(ctx, accountID)
-	if err != nil {
-		return gtserror.Newf("db error getting lists for account %s: %w", accountID, err)
-	}
-
-	l := log.WithContext(ctx).WithFields(kv.Fields{
-		{"accountID", accountID},
-		{"statusID", statusID},
-	}...)
-
-	// Unprepare item from home + list timelines, just log
-	// if something goes wrong since this is not a showstopper.
-
-	if err := p.state.Timelines.Home.UnprepareItem(ctx, accountID, statusID); err != nil {
-		l.Errorf("error unpreparing item from home timeline: %v", err)
-	}
-
-	for _, list := range lists {
-		if err := p.state.Timelines.List.UnprepareItem(ctx, list.ID, statusID); err != nil {
-			l.Errorf("error unpreparing item from list timeline %s: %v", list.ID, err)
-		}
-	}
-
-	return nil
-}
diff --git a/internal/processing/status/create.go b/internal/processing/status/create.go
index ee4466b1b..40b3f2df2 100644
--- a/internal/processing/status/create.go
+++ b/internal/processing/status/create.go
@@ -70,6 +70,10 @@ func (p *Processor) Create(ctx context.Context, requestingAccount *gtsmodel.Acco
 		return nil, errWithCode
 	}
 
+	if errWithCode := p.processThreadID(ctx, status); errWithCode != nil {
+		return nil, errWithCode
+	}
+
 	if errWithCode := p.processMediaIDs(ctx, form, requestingAccount.ID, status); errWithCode != nil {
 		return nil, errWithCode
 	}
@@ -99,7 +103,7 @@ func (p *Processor) Create(ctx context.Context, requestingAccount *gtsmodel.Acco
 		OriginAccount:  requestingAccount,
 	})
 
-	return p.apiStatus(ctx, status, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, status)
 }
 
 func (p *Processor) processReplyToID(ctx context.Context, form *apimodel.AdvancedStatusCreateForm, thisAccountID string, status *gtsmodel.Status) gtserror.WithCode {
@@ -141,12 +145,43 @@ func (p *Processor) processReplyToID(ctx context.Context, form *apimodel.Advance
 
 	// Set status fields from inReplyTo.
 	status.InReplyToID = inReplyTo.ID
+	status.InReplyTo = inReplyTo
 	status.InReplyToURI = inReplyTo.URI
 	status.InReplyToAccountID = inReplyTo.AccountID
 
 	return nil
 }
 
+func (p *Processor) processThreadID(ctx context.Context, status *gtsmodel.Status) gtserror.WithCode {
+	// Status takes the thread ID
+	// of whatever it replies to.
+	if status.InReplyTo != nil {
+		status.ThreadID = status.InReplyTo.ThreadID
+		return nil
+	}
+
+	// Status doesn't reply to anything,
+	// so it's a new local top-level status
+	// and therefore needs a thread ID.
+	threadID := id.NewULID()
+
+	if err := p.state.DB.PutThread(
+		ctx,
+		&gtsmodel.Thread{
+			ID: threadID,
+		},
+	); err != nil {
+		err := gtserror.Newf("error inserting new thread in db: %w", err)
+		return gtserror.NewErrorInternalError(err)
+	}
+
+	// Future replies to this status
+	// (if any) will inherit this thread ID.
+	status.ThreadID = threadID
+
+	return nil
+}
+
 func (p *Processor) processMediaIDs(ctx context.Context, form *apimodel.AdvancedStatusCreateForm, thisAccountID string, status *gtsmodel.Status) gtserror.WithCode {
 	if form.MediaIDs == nil {
 		return nil
diff --git a/internal/processing/status/delete.go b/internal/processing/status/delete.go
index 5549e0329..261086bdb 100644
--- a/internal/processing/status/delete.go
+++ b/internal/processing/status/delete.go
@@ -45,7 +45,7 @@ func (p *Processor) Delete(ctx context.Context, requestingAccount *gtsmodel.Acco
 	}
 
 	// Parse the status to API model BEFORE deleting it.
-	apiStatus, errWithCode := p.apiStatus(ctx, targetStatus, requestingAccount)
+	apiStatus, errWithCode := p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}
diff --git a/internal/processing/status/fave.go b/internal/processing/status/fave.go
index e2bf03594..a16fb6620 100644
--- a/internal/processing/status/fave.go
+++ b/internal/processing/status/fave.go
@@ -33,16 +33,36 @@ import (
 	"github.com/superseriousbusiness/gotosocial/internal/uris"
 )
 
+func (p *Processor) getFaveableStatus(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*gtsmodel.Status, *gtsmodel.StatusFave, gtserror.WithCode) {
+	targetStatus, errWithCode := p.c.GetVisibleTargetStatus(ctx, requestingAccount, targetStatusID)
+	if errWithCode != nil {
+		return nil, nil, errWithCode
+	}
+
+	if !*targetStatus.Likeable {
+		err := errors.New("status is not faveable")
+		return nil, nil, gtserror.NewErrorForbidden(err, err.Error())
+	}
+
+	fave, err := p.state.DB.GetStatusFave(ctx, requestingAccount.ID, targetStatusID)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		err = fmt.Errorf("getFaveTarget: error checking existing fave: %w", err)
+		return nil, nil, gtserror.NewErrorInternalError(err)
+	}
+
+	return targetStatus, fave, nil
+}
+
 // FaveCreate adds a fave for the requestingAccount, targeting the given status (no-op if fave already exists).
 func (p *Processor) FaveCreate(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*apimodel.Status, gtserror.WithCode) {
-	targetStatus, existingFave, errWithCode := p.getFaveTarget(ctx, requestingAccount, targetStatusID)
+	targetStatus, existingFave, errWithCode := p.getFaveableStatus(ctx, requestingAccount, targetStatusID)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}
 
 	if existingFave != nil {
 		// Status is already faveed.
-		return p.apiStatus(ctx, targetStatus, requestingAccount)
+		return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 	}
 
 	// Create and store a new fave
@@ -72,19 +92,19 @@ func (p *Processor) FaveCreate(ctx context.Context, requestingAccount *gtsmodel.
 		TargetAccount:  targetStatus.Account,
 	})
 
-	return p.apiStatus(ctx, targetStatus, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 }
 
 // FaveRemove removes a fave for the requesting account, targeting the given status (no-op if fave doesn't exist).
 func (p *Processor) FaveRemove(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*apimodel.Status, gtserror.WithCode) {
-	targetStatus, existingFave, errWithCode := p.getFaveTarget(ctx, requestingAccount, targetStatusID)
+	targetStatus, existingFave, errWithCode := p.getFaveableStatus(ctx, requestingAccount, targetStatusID)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}
 
 	if existingFave == nil {
 		// Status isn't faveed.
-		return p.apiStatus(ctx, targetStatus, requestingAccount)
+		return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 	}
 
 	// We have a fave to remove.
@@ -102,12 +122,12 @@ func (p *Processor) FaveRemove(ctx context.Context, requestingAccount *gtsmodel.
 		TargetAccount:  targetStatus.Account,
 	})
 
-	return p.apiStatus(ctx, targetStatus, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 }
 
 // FavedBy returns a slice of accounts that have liked the given status, filtered according to privacy settings.
 func (p *Processor) FavedBy(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) ([]*apimodel.Account, gtserror.WithCode) {
-	targetStatus, errWithCode := p.getVisibleStatus(ctx, requestingAccount, targetStatusID)
+	targetStatus, errWithCode := p.c.GetVisibleTargetStatus(ctx, requestingAccount, targetStatusID)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}
@@ -145,23 +165,3 @@ func (p *Processor) FavedBy(ctx context.Context, requestingAccount *gtsmodel.Acc
 
 	return apiAccounts, nil
 }
-
-func (p *Processor) getFaveTarget(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*gtsmodel.Status, *gtsmodel.StatusFave, gtserror.WithCode) {
-	targetStatus, errWithCode := p.getVisibleStatus(ctx, requestingAccount, targetStatusID)
-	if errWithCode != nil {
-		return nil, nil, errWithCode
-	}
-
-	if !*targetStatus.Likeable {
-		err := errors.New("status is not faveable")
-		return nil, nil, gtserror.NewErrorForbidden(err, err.Error())
-	}
-
-	fave, err := p.state.DB.GetStatusFave(ctx, requestingAccount.ID, targetStatusID)
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		err = fmt.Errorf("getFaveTarget: error checking existing fave: %w", err)
-		return nil, nil, gtserror.NewErrorInternalError(err)
-	}
-
-	return targetStatus, fave, nil
-}
diff --git a/internal/processing/status/get.go b/internal/processing/status/get.go
index cf79b96a0..8c939a61e 100644
--- a/internal/processing/status/get.go
+++ b/internal/processing/status/get.go
@@ -28,17 +28,17 @@ import (
 
 // Get gets the given status, taking account of privacy settings and blocks etc.
 func (p *Processor) Get(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*apimodel.Status, gtserror.WithCode) {
-	targetStatus, errWithCode := p.getVisibleStatus(ctx, requestingAccount, targetStatusID)
+	targetStatus, errWithCode := p.c.GetVisibleTargetStatus(ctx, requestingAccount, targetStatusID)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}
 
-	return p.apiStatus(ctx, targetStatus, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 }
 
 // ContextGet returns the context (previous and following posts) from the given status ID.
 func (p *Processor) ContextGet(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*apimodel.Context, gtserror.WithCode) {
-	targetStatus, errWithCode := p.getVisibleStatus(ctx, requestingAccount, targetStatusID)
+	targetStatus, errWithCode := p.c.GetVisibleTargetStatus(ctx, requestingAccount, targetStatusID)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}
diff --git a/internal/processing/status/mute.go b/internal/processing/status/mute.go
new file mode 100644
index 000000000..1663ee0bc
--- /dev/null
+++ b/internal/processing/status/mute.go
@@ -0,0 +1,146 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package status
+
+import (
+	"context"
+	"errors"
+
+	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/id"
+)
+
+// getMuteableStatus fetches targetStatusID status and
+// ensures that requestingAccount can mute or unmute it.
+//
+// It checks:
+//   - Status exists and is visible to requester.
+//   - Status belongs to or mentions requesting account.
+//   - Status is not a boost.
+//   - Status has a thread ID.
+func (p *Processor) getMuteableStatus(
+	ctx context.Context,
+	requestingAccount *gtsmodel.Account,
+	targetStatusID string,
+) (*gtsmodel.Status, gtserror.WithCode) {
+	targetStatus, errWithCode := p.c.GetVisibleTargetStatus(ctx, requestingAccount, targetStatusID)
+	if errWithCode != nil {
+		return nil, errWithCode
+	}
+
+	if !targetStatus.BelongsToAccount(requestingAccount.ID) &&
+		!targetStatus.MentionsAccount(requestingAccount.ID) {
+		err := gtserror.Newf("status %s does not belong to or mention account %s", targetStatusID, requestingAccount.ID)
+		return nil, gtserror.NewErrorNotFound(err)
+	}
+
+	if targetStatus.BoostOfID != "" {
+		err := gtserror.New("cannot mute or unmute boosts")
+		return nil, gtserror.NewErrorBadRequest(err, err.Error())
+	}
+
+	if targetStatus.ThreadID == "" {
+		err := gtserror.New("cannot mute or unmute status with no threadID")
+		return nil, gtserror.NewErrorBadRequest(err, err.Error())
+	}
+
+	return targetStatus, nil
+}
+
+func (p *Processor) MuteCreate(
+	ctx context.Context,
+	requestingAccount *gtsmodel.Account,
+	targetStatusID string,
+) (*apimodel.Status, gtserror.WithCode) {
+	targetStatus, errWithCode := p.getMuteableStatus(ctx, requestingAccount, targetStatusID)
+	if errWithCode != nil {
+		return nil, errWithCode
+	}
+
+	var (
+		threadID  = targetStatus.ThreadID
+		accountID = requestingAccount.ID
+	)
+
+	// Check if mute already exists for this thread ID.
+	threadMute, err := p.state.DB.GetThreadMutedByAccount(ctx, threadID, accountID)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		// Real db error.
+		err := gtserror.Newf("db error fetching mute of thread %s for account %s", threadID, accountID)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	if threadMute != nil {
+		// Thread mute already exists.
+		// Our job here is done ("but you didn't do anything!").
+		return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
+	}
+
+	// Gotta create a mute.
+	if err := p.state.DB.PutThreadMute(ctx, &gtsmodel.ThreadMute{
+		ID:        id.NewULID(),
+		ThreadID:  threadID,
+		AccountID: accountID,
+	}); err != nil {
+		err := gtserror.Newf("db error putting mute of thread %s for account %s", threadID, accountID)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
+}
+
+func (p *Processor) MuteRemove(
+	ctx context.Context,
+	requestingAccount *gtsmodel.Account,
+	targetStatusID string,
+) (*apimodel.Status, gtserror.WithCode) {
+	targetStatus, errWithCode := p.getMuteableStatus(ctx, requestingAccount, targetStatusID)
+	if errWithCode != nil {
+		return nil, errWithCode
+	}
+
+	var (
+		threadID  = targetStatus.ThreadID
+		accountID = requestingAccount.ID
+	)
+
+	// Check if mute exists for this thread ID.
+	threadMute, err := p.state.DB.GetThreadMutedByAccount(ctx, threadID, accountID)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		// Real db error.
+		err := gtserror.Newf("db error fetching mute of thread %s for account %s", threadID, accountID)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	if threadMute == nil {
+		// Thread mute doesn't exist.
+		// Our job here is done ("but you didn't do anything!").
+		return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
+	}
+
+	// Gotta remove the mute.
+	if err := p.state.DB.DeleteThreadMute(ctx, threadMute.ID); err != nil {
+		err := gtserror.Newf("db error deleting mute of thread %s for account %s", threadID, accountID)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
+}
diff --git a/internal/processing/status/pin.go b/internal/processing/status/pin.go
index c5981b699..b31288a64 100644
--- a/internal/processing/status/pin.go
+++ b/internal/processing/status/pin.go
@@ -39,7 +39,7 @@ const allowedPinnedCount = 10
 //   - Status is public, unlisted, or followers-only.
 //   - Status is not a boost.
 func (p *Processor) getPinnableStatus(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*gtsmodel.Status, gtserror.WithCode) {
-	targetStatus, errWithCode := p.getVisibleStatus(ctx, requestingAccount, targetStatusID)
+	targetStatus, errWithCode := p.c.GetVisibleTargetStatus(ctx, requestingAccount, targetStatusID)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}
@@ -99,12 +99,12 @@ func (p *Processor) PinCreate(ctx context.Context, requestingAccount *gtsmodel.A
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	if err := p.invalidateStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
+	if err := p.c.InvalidateTimelinedStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
 		err = gtserror.Newf("error invalidating status from timelines: %w", err)
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	return p.apiStatus(ctx, targetStatus, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 }
 
 // PinRemove unpins the target status from the top of requestingAccount's profile, if possible.
@@ -125,7 +125,7 @@ func (p *Processor) PinRemove(ctx context.Context, requestingAccount *gtsmodel.A
 	}
 
 	if targetStatus.PinnedAt.IsZero() {
-		return p.apiStatus(ctx, targetStatus, requestingAccount)
+		return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 	}
 
 	targetStatus.PinnedAt = time.Time{}
@@ -134,10 +134,10 @@ func (p *Processor) PinRemove(ctx context.Context, requestingAccount *gtsmodel.A
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	if err := p.invalidateStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
+	if err := p.c.InvalidateTimelinedStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
 		err = gtserror.Newf("error invalidating status from timelines: %w", err)
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	return p.apiStatus(ctx, targetStatus, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 }
diff --git a/internal/processing/status/status.go b/internal/processing/status/status.go
index 28ea64542..b45b1651e 100644
--- a/internal/processing/status/status.go
+++ b/internal/processing/status/status.go
@@ -20,6 +20,7 @@ package status
 import (
 	"github.com/superseriousbusiness/gotosocial/internal/federation"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/processing/common"
 	"github.com/superseriousbusiness/gotosocial/internal/state"
 	"github.com/superseriousbusiness/gotosocial/internal/text"
 	"github.com/superseriousbusiness/gotosocial/internal/typeutils"
@@ -27,6 +28,9 @@ import (
 )
 
 type Processor struct {
+	// common processor logic
+	c *common.Processor
+
 	state        *state.State
 	federator    *federation.Federator
 	converter    *typeutils.Converter
@@ -36,8 +40,16 @@ type Processor struct {
 }
 
 // New returns a new status processor.
-func New(state *state.State, federator *federation.Federator, converter *typeutils.Converter, filter *visibility.Filter, parseMention gtsmodel.ParseMentionFunc) Processor {
+func New(
+	common *common.Processor,
+	state *state.State,
+	federator *federation.Federator,
+	converter *typeutils.Converter,
+	filter *visibility.Filter,
+	parseMention gtsmodel.ParseMentionFunc,
+) Processor {
 	return Processor{
+		c:            common,
 		state:        state,
 		federator:    federator,
 		converter:    converter,
diff --git a/internal/processing/status/status_test.go b/internal/processing/status/status_test.go
index 0507df484..22486ecf2 100644
--- a/internal/processing/status/status_test.go
+++ b/internal/processing/status/status_test.go
@@ -24,6 +24,7 @@ import (
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 	"github.com/superseriousbusiness/gotosocial/internal/media"
 	"github.com/superseriousbusiness/gotosocial/internal/processing"
+	"github.com/superseriousbusiness/gotosocial/internal/processing/common"
 	"github.com/superseriousbusiness/gotosocial/internal/processing/status"
 	"github.com/superseriousbusiness/gotosocial/internal/state"
 	"github.com/superseriousbusiness/gotosocial/internal/storage"
@@ -94,7 +95,9 @@ func (suite *StatusStandardTestSuite) SetupTest() {
 		suite.typeConverter,
 	)
 
-	suite.status = status.New(&suite.state, suite.federator, suite.typeConverter, filter, processing.GetParseMentionFunc(suite.db, suite.federator))
+	common := common.New(&suite.state, suite.typeConverter, suite.federator, filter)
+
+	suite.status = status.New(&common, &suite.state, suite.federator, suite.typeConverter, filter, processing.GetParseMentionFunc(suite.db, suite.federator))
 
 	testrig.StandardDBSetup(suite.db, suite.testAccounts)
 	testrig.StandardStorageSetup(suite.storage, "../../../testrig/media")
diff --git a/internal/processing/workers/fromclientapi.go b/internal/processing/workers/fromclientapi.go
index ff316b1f4..789145226 100644
--- a/internal/processing/workers/fromclientapi.go
+++ b/internal/processing/workers/fromclientapi.go
@@ -260,6 +260,11 @@ func (p *clientAPI) CreateLike(ctx context.Context, cMsg messages.FromClientAPI)
 		return gtserror.Newf("%T not parseable as *gtsmodel.StatusFave", cMsg.GTSModel)
 	}
 
+	// Ensure fave populated.
+	if err := p.state.DB.PopulateStatusFave(ctx, fave); err != nil {
+		return gtserror.Newf("error populating status fave: %w", err)
+	}
+
 	if err := p.surface.notifyFave(ctx, fave); err != nil {
 		return gtserror.Newf("error notifying fave: %w", err)
 	}
diff --git a/internal/processing/workers/fromclientapi_test.go b/internal/processing/workers/fromclientapi_test.go
index e5a098c31..05526f437 100644
--- a/internal/processing/workers/fromclientapi_test.go
+++ b/internal/processing/workers/fromclientapi_test.go
@@ -75,6 +75,7 @@ func (suite *FromClientAPITestSuite) newStatus(
 		newStatus.InReplyToAccountID = replyToStatus.AccountID
 		newStatus.InReplyToID = replyToStatus.ID
 		newStatus.InReplyToURI = replyToStatus.URI
+		newStatus.ThreadID = replyToStatus.ThreadID
 
 		// Mention the replied-to account.
 		mention := &gtsmodel.Mention{
@@ -324,6 +325,114 @@ func (suite *FromClientAPITestSuite) TestProcessCreateStatusReply() {
 	)
 }
 
+func (suite *FromClientAPITestSuite) TestProcessCreateStatusReplyMuted() {
+	var (
+		ctx              = context.Background()
+		postingAccount   = suite.testAccounts["admin_account"]
+		receivingAccount = suite.testAccounts["local_account_1"]
+
+		// Admin account posts a reply to zork.
+		// Normally zork would get a notification
+		// for this, but zork mutes this thread.
+		status = suite.newStatus(
+			ctx,
+			postingAccount,
+			gtsmodel.VisibilityPublic,
+			suite.testStatuses["local_account_1_status_1"],
+			nil,
+		)
+		threadMute = &gtsmodel.ThreadMute{
+			ID:        "01HD3KRMBB1M85QRWHD912QWRE",
+			ThreadID:  suite.testStatuses["local_account_1_status_1"].ThreadID,
+			AccountID: receivingAccount.ID,
+		}
+	)
+
+	// Store the thread mute before processing new status.
+	if err := suite.db.PutThreadMute(ctx, threadMute); err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	// Process the new status.
+	if err := suite.processor.Workers().ProcessFromClientAPI(
+		ctx,
+		messages.FromClientAPI{
+			APObjectType:   ap.ObjectNote,
+			APActivityType: ap.ActivityCreate,
+			GTSModel:       status,
+			OriginAccount:  postingAccount,
+		},
+	); err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	// Ensure no notification received.
+	notif, err := suite.db.GetNotification(
+		ctx,
+		gtsmodel.NotificationMention,
+		receivingAccount.ID,
+		postingAccount.ID,
+		status.ID,
+	)
+
+	suite.ErrorIs(err, db.ErrNoEntries)
+	suite.Nil(notif)
+}
+
+func (suite *FromClientAPITestSuite) TestProcessCreateStatusBoostMuted() {
+	var (
+		ctx              = context.Background()
+		postingAccount   = suite.testAccounts["admin_account"]
+		receivingAccount = suite.testAccounts["local_account_1"]
+
+		// Admin account boosts a status by zork.
+		// Normally zork would get a notification
+		// for this, but zork mutes this thread.
+		status = suite.newStatus(
+			ctx,
+			postingAccount,
+			gtsmodel.VisibilityPublic,
+			nil,
+			suite.testStatuses["local_account_1_status_1"],
+		)
+		threadMute = &gtsmodel.ThreadMute{
+			ID:        "01HD3KRMBB1M85QRWHD912QWRE",
+			ThreadID:  suite.testStatuses["local_account_1_status_1"].ThreadID,
+			AccountID: receivingAccount.ID,
+		}
+	)
+
+	// Store the thread mute before processing new status.
+	if err := suite.db.PutThreadMute(ctx, threadMute); err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	// Process the new status.
+	if err := suite.processor.Workers().ProcessFromClientAPI(
+		ctx,
+		messages.FromClientAPI{
+			APObjectType:   ap.ActivityAnnounce,
+			APActivityType: ap.ActivityCreate,
+			GTSModel:       status,
+			OriginAccount:  postingAccount,
+		},
+	); err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	// Ensure no notification received.
+	notif, err := suite.db.GetNotification(
+		ctx,
+		gtsmodel.NotificationReblog,
+		receivingAccount.ID,
+		postingAccount.ID,
+		status.ID,
+	)
+
+	suite.ErrorIs(err, db.ErrNoEntries)
+	suite.Nil(notif)
+}
+
 func (suite *FromClientAPITestSuite) TestProcessCreateStatusListRepliesPolicyListOnlyOK() {
 	// We're modifying the test list so take a copy.
 	testList := new(gtsmodel.List)
diff --git a/internal/processing/workers/fromfediapi.go b/internal/processing/workers/fromfediapi.go
index 598480cfb..f57235bf1 100644
--- a/internal/processing/workers/fromfediapi.go
+++ b/internal/processing/workers/fromfediapi.go
@@ -315,6 +315,11 @@ func (p *fediAPI) CreateLike(ctx context.Context, fMsg messages.FromFediAPI) err
 		return gtserror.Newf("%T not parseable as *gtsmodel.StatusFave", fMsg.GTSModel)
 	}
 
+	// Ensure fave populated.
+	if err := p.state.DB.PopulateStatusFave(ctx, fave); err != nil {
+		return gtserror.Newf("error populating status fave: %w", err)
+	}
+
 	if err := p.surface.notifyFave(ctx, fave); err != nil {
 		return gtserror.Newf("error notifying fave: %w", err)
 	}
diff --git a/internal/processing/workers/surfacenotify.go b/internal/processing/workers/surfacenotify.go
index 5a4f77a64..b99fa3ad3 100644
--- a/internal/processing/workers/surfacenotify.go
+++ b/internal/processing/workers/surfacenotify.go
@@ -28,15 +28,39 @@ import (
 	"github.com/superseriousbusiness/gotosocial/internal/id"
 )
 
-// notifyMentions notifies each targeted account in
-// the given mentions that they have a new mention.
+// notifyMentions iterates through mentions on the
+// given status, and notifies each mentioned account
+// that they have a new mention.
 func (s *surface) notifyMentions(
 	ctx context.Context,
-	mentions []*gtsmodel.Mention,
+	status *gtsmodel.Status,
 ) error {
-	errs := gtserror.NewMultiError(len(mentions))
+	var (
+		mentions = status.Mentions
+		errs     = gtserror.NewMultiError(len(mentions))
+	)
 
 	for _, mention := range mentions {
+		// Ensure thread not muted
+		// by mentioned account.
+		muted, err := s.state.DB.IsThreadMutedByAccount(
+			ctx,
+			status.ThreadID,
+			mention.TargetAccountID,
+		)
+
+		if err != nil {
+			errs.Append(err)
+			continue
+		}
+
+		if muted {
+			// This mentioned account
+			// has muted the thread.
+			// Don't pester them.
+			continue
+		}
+
 		if err := s.notify(
 			ctx,
 			gtsmodel.NotificationMention,
@@ -114,6 +138,24 @@ func (s *surface) notifyFave(
 		return nil
 	}
 
+	// Ensure favee hasn't
+	// muted the thread.
+	muted, err := s.state.DB.IsThreadMutedByAccount(
+		ctx,
+		fave.Status.ThreadID,
+		fave.TargetAccountID,
+	)
+
+	if err != nil {
+		return err
+	}
+
+	if muted {
+		// Boostee doesn't want
+		// notifs for this thread.
+		return nil
+	}
+
 	return s.notify(
 		ctx,
 		gtsmodel.NotificationFave,
@@ -134,11 +176,35 @@ func (s *surface) notifyAnnounce(
 		return nil
 	}
 
+	if status.BoostOf == nil {
+		// No boosted status
+		// set, nothing to do.
+		return nil
+	}
+
 	if status.BoostOfAccountID == status.AccountID {
 		// Self-boost, nothing to do.
 		return nil
 	}
 
+	// Ensure boostee hasn't
+	// muted the thread.
+	muted, err := s.state.DB.IsThreadMutedByAccount(
+		ctx,
+		status.BoostOf.ThreadID,
+		status.BoostOfAccountID,
+	)
+
+	if err != nil {
+		return err
+	}
+
+	if muted {
+		// Boostee doesn't want
+		// notifs for this thread.
+		return nil
+	}
+
 	return s.notify(
 		ctx,
 		gtsmodel.NotificationReblog,
diff --git a/internal/processing/workers/surfacetimeline.go b/internal/processing/workers/surfacetimeline.go
index a45c83188..15263cf78 100644
--- a/internal/processing/workers/surfacetimeline.go
+++ b/internal/processing/workers/surfacetimeline.go
@@ -67,7 +67,7 @@ func (s *surface) timelineAndNotifyStatus(ctx context.Context, status *gtsmodel.
 	}
 
 	// Notify each local account that's mentioned by this status.
-	if err := s.notifyMentions(ctx, status.Mentions); err != nil {
+	if err := s.notifyMentions(ctx, status); err != nil {
 		return gtserror.Newf("error notifying status mentions for status %s: %w", status.ID, err)
 	}