Function walk

apps/desktop/src/main/vault.ts:1317–1350

(dirRel: string)

export async function migrateLegacyDatabases(root: string): Promise<number> {
  let migrated = 0
  const walk = async (dirRel: string): Promise<void> => {
    const dirAbs = dirRel ? path.join(root, dirRel) : root
    let entries: Dirent[]
    try {
      entries = await fs.readdir(dirAbs, { withFileTypes: true })
    } catch {
      return
    }
    for (const entry of entries) {
      const name = entry.name
      if (name.startsWith('.')) continue
      const childRel = dirRel ? `${dirRel}/${name}` : name
      if (entry.isDirectory()) {
        if (isFormDirName(name)) continue // already a database folder
        await walk(childRel)
        continue
      }
      const lower = name.toLowerCase()
      if (!lower.endsWith('.csv') || lower.endsWith(`.csv${DATABASE_SIDECAR_SUFFIX}`)) continue
      // Only migrate a managed database (a `.csv` with a sibling sidecar); a
      // plain CSV without one is left as a file.
      const sidecarRel = `${childRel}${DATABASE_SIDECAR_SUFFIX}`
      try {
        await fs.access(resolveSafe(root, sidecarRel))
      } catch {
        continue
      }
      try {
        if (await migrateOneLegacyDatabase(root, childRel, sidecarRel)) migrated++
      } catch (err) {
        console.error(`database migration failed for ${childRel}`, err)
      }
    }
  }
  await walk('')
  if (migrated > 0) {
    console.log(`[zen] migrated ${migrated} database(s) to the .base folder layout`)