[feature] Rework timeline code to make it useful for more than just statuses (#373)

* add preparable and timelineable interfaces

* initialize timeline manager within the processor

* generic renaming

* move status-specific timeline logic into the processor

* refactor timeline to make it useful for more than statuses

1 files changed, 0 insertions, 99 deletions

diff --git a/internal/timeline/preparedposts.go b/internal/timeline/preparedposts.go
deleted file mode 100644
index 54e0e61f3..000000000
--- a/internal/timeline/preparedposts.go
+++ /dev/null
@@ -1,99 +0,0 @@
-/*
-   GoToSocial
-   Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
-
-   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 timeline
-
-import (
-	"container/list"
-	"errors"
-
-	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
-)
-
-type preparedPosts struct {
-	data *list.List
-}
-
-type preparedPostsEntry struct {
-	statusID         string
-	boostOfID        string
-	accountID        string
-	boostOfAccountID string
-	prepared         *apimodel.Status
-}
-
-func (p *preparedPosts) insertPrepared(i *preparedPostsEntry) error {
-	if p.data == nil {
-		p.data = &list.List{}
-	}
-
-	// if we have no entries yet, this is both the newest and oldest entry, so just put it in the front
-	if p.data.Len() == 0 {
-		p.data.PushFront(i)
-		return nil
-	}
-
-	var insertMark *list.Element
-	var position int
-	// We need to iterate through the index to make sure we put this post in the appropriate place according to when it was created.
-	// We also need to make sure we're not inserting a duplicate post -- this can happen sometimes and it's not nice UX (*shudder*).
-	for e := p.data.Front(); e != nil; e = e.Next() {
-		position++
-
-		entry, ok := e.Value.(*preparedPostsEntry)
-		if !ok {
-			return errors.New("index: could not parse e as a preparedPostsEntry")
-		}
-
-		// don't insert this if it's a boost of a status we've seen recently
-		if i.prepared.Reblog != nil {
-			if entry.prepared.Reblog != nil && i.prepared.Reblog.ID == entry.prepared.Reblog.ID {
-				if position < boostReinsertionDepth {
-					return nil
-				}
-			}
-
-			if i.prepared.Reblog.ID == entry.statusID {
-				if position < boostReinsertionDepth {
-					return nil
-				}
-			}
-		}
-
-		// if the post to index is newer than e, insert it before e in the list
-		if insertMark == nil {
-			if i.statusID > entry.statusID {
-				insertMark = e
-			}
-		}
-
-		// make sure we don't insert a duplicate
-		if entry.statusID == i.statusID {
-			return nil
-		}
-	}
-
-	if insertMark != nil {
-		p.data.InsertBefore(i, insertMark)
-		return nil
-	}
-
-	// if we reach this point it's the oldest post we've seen so put it at the back
-	p.data.PushBack(i)
-	return nil
-}