Join an upload's releases by its par2 set's file names

The files of one upload often became several releases whose names
differ slightly: scene tracks apart from their album's nfo/sfv/par2,
"Vermaechtnis" beside a garbled "Vermächtnis", an index named
Die.Bergretter.S18E05... beside its video wishtv-diebergretter-s18e05.
The par2 merge joined releases only by first-16-KiB hashes, which
readable files never get. A name pass now looks, for every set the
merger finds, at the set poster's releases in its group posted within
12 hours: those whose files the set all names (without case or
punctuation, Latin-1-read UTF-8 read back; sidecars, par2 and images
aside) join the set's release, within the hash pass's file bound.
Merges are kept in release_merges as via 'name'. releases:merge-names
runs it over the sets found before; on 300 recent sets 22 merges of 147
releases, all one upload each.

Also: volumes split after .wmv, .mov, .mpg and other video extensions
share a stem ("Morning Lovers.wmv.001" to ".058" were 58 releases), in
the Rust edge and the TypeScript identity.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

commands/releases_merge_names.ts

@@ -0,0 +1,61 @@
+import { BaseCommand, flags } from '@adonisjs/core/ace'
+import type { CommandOptions } from '@adonisjs/core/types/ace'
+import db from '@adonisjs/lucid/services/db'
+import { Par2Merger } from '#services/par2_merger'
+
+/**
+ * The par2 merger's name pass over sets found before it was built (2026-10-23): every set with its file list, newest
+ * first, by set row. --dry-run counts what it would merge and shows examples, merging nothing.
+ */
+export default class ReleasesMergeNames extends BaseCommand {
+  static commandName = 'releases:merge-names'
+  static description = "Merges releases by their par2 set's file names, for sets found before the name pass; --dry-run shows only"
+  static options: CommandOptions = { startApp: true }
+
+  @flags.number({ description: 'Sets to look at (newest first); all without' })
+  declare sets: number
+
+  @flags.boolean({ description: 'Count and show, merge nothing' })
+  declare dryRun: boolean
+
+  async run() {
+    const merger = new Par2Merger()
+    let before = '9999-12-31'
+    let looked = 0
+    let merges = 0
+    let releases = 0
+    const examples: string[] = []
+    while (this.sets === undefined || looked < this.sets) {
+      const { rows } = await db.rawQuery(
+        `SELECT s.set_id, max(s.created_at) AS at FROM par2_sets s WHERE s.created_at < ? AND EXISTS (SELECT 1 FROM par2_files f WHERE f.set_id = s.set_id)
+         GROUP BY s.set_id ORDER BY at DESC LIMIT ${this.dryRun ? 50 : 500}`,
+        [before]
+      )
+      if (rows.length === 0) break
+      for (const { set_id: setId } of rows) {
+        looked++
+        if (this.dryRun) {
+          const found = await db.transaction(async (trx) => merger.nameMatches(trx, setId.trim()))
+          if (found) {
+            merges++
+            releases += found.size
+            if (examples.length < 15) {
+              const { rows: names } = await db.rawQuery(`SELECT id, name, files FROM releases WHERE id = ANY(?) ORDER BY id`, [[...found.keys()]])
+              examples.push(names.map((n: any) => `${n.name.slice(0, 50)} [${n.files}]`).join(' + '))
+            }
+          }
+        } else {
+          const merged = await merger.mergeByName(setId.trim())
+          if (merged > 0) {
+            merges++
+            releases += merged + 1
+          }
+        }
+      }
+      before = rows.at(-1).at
+      if (this.dryRun || looked % 20_000 < 500) this.logger.info(`${looked} sets looked at: ${releases} releases ${this.dryRun ? 'would merge' : 'merged'} into ${merges}.`)
+    }
+    this.logger.info(`Done: ${looked} sets looked at, ${releases} releases ${this.dryRun ? 'would merge' : 'merged'} into ${merges}.`)
+    for (const e of examples) this.logger.info(`  ${e.slice(0, 300)}`)
+  }
+}