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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,150 @@ | ||
| /* | ||
| Copyright 2023 Dima Krasner | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package front | ||
|
|
||
| import ( | ||
| "crypto/sha256" | ||
| "database/sql" | ||
| "errors" | ||
| "fmt" | ||
| "github.com/dimkr/tootik/ap" | ||
| "github.com/dimkr/tootik/front/text" | ||
| "path/filepath" | ||
| "strings" | ||
| ) | ||
|
|
||
| type threadNode struct { | ||
| Depth int | ||
| PostID, Inserted, AuthorUserName string | ||
| } | ||
|
|
||
| func thread(w text.Writer, r *request) { | ||
| hash := filepath.Base(r.URL.Path) | ||
|
|
||
| offset, err := getOffset(r.URL) | ||
| if err != nil { | ||
| r.Log.Info("Failed to parse query", "error", err) | ||
| w.Status(40, "Invalid query") | ||
| return | ||
| } | ||
|
|
||
| r.Log.Info("Viewing thread", "hash", hash) | ||
|
|
||
| var threadHead sql.NullString | ||
| if err := r.QueryRow(`with recursive thread(id, parent) as (select notes.id, notes.object->>'inReplyTo' as parent from notes where hash = ? union select notes.id, notes.object->>'inReplyTo' as parent from thread t join notes on notes.id = t.parent) select thread.id from thread where thread.parent is null limit 1`, hash).Scan(&threadHead); err != nil && !errors.Is(err, sql.ErrNoRows) { | ||
| r.Log.Warn("Failed to fetch thread head", "error", err) | ||
| w.Error() | ||
| return | ||
| } | ||
|
|
||
| var rootAuthorID, rootAuthorType, rootAuthorUsername string | ||
| var rootAuthorName sql.NullString | ||
| if err := r.QueryRow(`select persons.id, persons.actor->>'type', persons.actor->>'preferredUsername', persons.actor->>'name' from notes join persons on persons.id = notes.author where notes.hash = ?`, hash).Scan(&rootAuthorID, &rootAuthorType, &rootAuthorUsername, &rootAuthorName); err != nil && !errors.Is(err, sql.ErrNoRows) { | ||
| r.Log.Warn("Failed to fetch thread root author", "error", err) | ||
| w.Error() | ||
| return | ||
| } | ||
|
|
||
| rows, err := r.Query(`select thread.depth, thread.id, strftime('%Y-%m-%d', datetime(thread.inserted, 'unixepoch')), persons.actor->>'preferredUsername' from (with recursive thread(id, author, inserted, parent, depth, path) as (select notes.id, notes.author, notes.inserted, object->>'inReplyTo' as parent, 0 as depth, notes.id as path from notes where hash = $1 union select notes.id, notes.author, notes.inserted, notes.object->>'inReplyTo', t.depth + 1, t.path || ';' || notes.id from thread t join notes on notes.object->>'inReplyTo' = t.id where t.depth <= 5) select thread.depth, thread.id, thread.author, thread.inserted, thread.path from thread order by thread.path limit $2 offset $3) thread join persons on persons.id = thread.author order by thread.path`, hash, postsPerPage, offset) | ||
| if err != nil { | ||
| r.Log.Info("Failed to fetch thread", "hash", hash, "error", err) | ||
| w.Status(40, "Post not found") | ||
| return | ||
| } | ||
| defer rows.Close() | ||
|
|
||
| count := 0 | ||
| nodes := make([]threadNode, postsPerPage) | ||
|
|
||
| for rows.Next() { | ||
| if err := rows.Scan( | ||
| &nodes[count].Depth, | ||
| &nodes[count].PostID, | ||
| &nodes[count].Inserted, | ||
| &nodes[count].AuthorUserName, | ||
| ); err != nil { | ||
| r.Log.Info("Failed to scan post", "hash", hash, "error", err) | ||
| continue | ||
| } | ||
|
|
||
| count++ | ||
| } | ||
| rows.Close() | ||
|
|
||
| if count == 0 { | ||
| r.Log.Info("Failed to fetch any nodes in thread", "hash", hash) | ||
| w.Error() | ||
| return | ||
| } | ||
|
|
||
| w.OK() | ||
|
|
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| var displayName string | ||
| if rootAuthorName.Valid { | ||
| displayName = getDisplayName(rootAuthorID, rootAuthorUsername, rootAuthorName.String, ap.ActorType(rootAuthorType), r.Log) | ||
| } else { | ||
| displayName = getDisplayName(rootAuthorID, rootAuthorUsername, "", ap.ActorType(rootAuthorType), r.Log) | ||
| } | ||
| w.Titlef("🧵 Replies to %s", displayName) | ||
|
|
||
| for _, node := range nodes[:count] { | ||
| var b strings.Builder | ||
| b.WriteString(node.Inserted) | ||
| b.WriteByte(' ') | ||
| if node.Depth > 0 { | ||
| for i := 0; i < node.Depth; i++ { | ||
| b.WriteRune('·') | ||
| } | ||
| b.WriteByte(' ') | ||
| } | ||
| b.WriteString(node.AuthorUserName) | ||
|
|
||
| if r.User == nil { | ||
| w.Link(fmt.Sprintf("/view/%x", sha256.Sum256([]byte(node.PostID))), b.String()) | ||
| } else { | ||
| w.Link(fmt.Sprintf("/users/view/%x", sha256.Sum256([]byte(node.PostID))), b.String()) | ||
| } | ||
| } | ||
|
|
||
| if (threadHead.Valid && count > 0 && threadHead.String != nodes[0].PostID) || offset >= postsPerPage || count == postsPerPage { | ||
| w.Separator() | ||
| } | ||
|
|
||
| if threadHead.Valid && count > 0 && threadHead.String != nodes[0].PostID && r.User == nil { | ||
| w.Link(fmt.Sprintf("/view/%x", sha256.Sum256([]byte(threadHead.String))), "View first post in thread") | ||
| } else if threadHead.Valid && count > 0 && threadHead.String != nodes[0].PostID { | ||
| w.Link(fmt.Sprintf("/users/view/%x", sha256.Sum256([]byte(threadHead.String))), "View first post in thread") | ||
| } | ||
|
|
||
| if offset > postsPerPage && r.User == nil { | ||
| w.Link("/thread/"+hash, "First page") | ||
| } else if offset > postsPerPage { | ||
| w.Link("/users/thread/"+hash, "First page") | ||
| } | ||
|
|
||
| if offset >= postsPerPage && r.User == nil { | ||
| w.Linkf(fmt.Sprintf("/thread/%s?%d", hash, offset-postsPerPage), "Previous page (%d-%d)", offset-postsPerPage, offset) | ||
| } else if offset >= postsPerPage { | ||
| w.Linkf(fmt.Sprintf("/users/thread/%s?%d", hash, offset-postsPerPage), "Previous page (%d-%d)", offset-postsPerPage, offset) | ||
| } | ||
|
|
||
| if count == postsPerPage && r.User == nil { | ||
| w.Linkf(fmt.Sprintf("/thread/%s?%d", hash, offset+postsPerPage), "Next page (%d-%d)", offset+postsPerPage, offset+2*postsPerPage) | ||
| } else if count == postsPerPage { | ||
| w.Linkf(fmt.Sprintf("/users/thread/%s?%d", hash, offset+postsPerPage), "Next page (%d-%d)", offset+postsPerPage, offset+2*postsPerPage) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| package migrations | ||
|
|
||
| import ( | ||
| "context" | ||
| "database/sql" | ||
| ) | ||
|
|
||
| func thread(ctx context.Context, tx *sql.Tx) error { | ||
| if _, err := tx.ExecContext(ctx, `CREATE INDEX notesidinreplytoauthorinserted ON notes(id, object->>'inReplyTo', author, inserted)`); err != nil { | ||
| return err | ||
| } | ||
|
|
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| if _, err := tx.ExecContext(ctx, `DROP INDEX notesinreplyto`); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return nil | ||
| } |
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