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#305: a full pond archive before deletion and before purge
Deleting a pond already had a strict prompt — typing the pond name, stricter
than a confirm dialog. That was never the gap. The gap is that the person who
deletes it loses access the moment they do: the pond leaves their view, only a
Site Admin can bring it back, and the export is no longer reachable for them.
So the archive is offered INSIDE the deletion flow, before the button.

What it contains, and why it is not the existing export:

- Every page the requester may read, as Markdown, as before.
- **Every attachment of the pond**, not only the embedded ones. An
  attachment nobody put on a page would otherwise vanish unnoticed — which
  is the whole reason this issue exists.
- `manifest.json`: pond settings (EFFECTIVE, defaults filled in — a
  preservation format must not require its reader to know Dorfteich's
  defaults), labels, the page hierarchy and sort keys, comments, and
  attachment metadata including the #199 hash so a reader can verify bytes.
  It extends the #210 manifest rather than adding a second descriptor, and
  carries an explicit `formatVersion`.
- `README.txt`, because the manifest is for machines: whoever unpacks a
  folder of Markdown a year from now must not believe they hold a one-click
  restore.

Decisions worth naming:

- **"Complete" describes the RESULT, not the route.** A pond admin who may
  read every page gets `complete: true`; only an archive that actually
  leaves pages out is incomplete. The Site-Admin route skips the read filter
  (an archive taken before an irreversible purge must not depend on which
  ponds the operator happens to be a member of) — those are two different
  questions and the first version of this conflated them.
- **The omission is named before the download**, with its number, in the UI
  and in the manifest. An archive silently missing content is worse than no
  archive, because it ends the search.
- **Not downloading stays allowed.** A pond of test pages should not require
  one, and the server cannot tell whether a file arrived anyway — so the
  finality is stated in text instead of enforced.
- **A plain link, not fetch-into-a-blob.** The api streams the ZIP; buffering
  a whole pond in the tab to draw a progress bar would trade memory for
  cosmetics. The browser reports progress and completion; what it cannot say
  — that the archive is being BUILT — is announced in a live region.
- Read trail unchanged in kind (ADR 0023): one `export` event per classified
  page before any classified byte enters the stream. Attachments never travel
  without their page, so the same events cover them.
- New audit action `pond.archived` (catalogue v1.7) with page and attachment
  counts, omitted pages, and completeness.

Format documented in `docs/architecture/pond-archive-format.md`, including
what is deliberately NOT in it (history, permissions, trash).

Verified by hand, not only asserted: a real pond's archive downloaded and
unpacked — README, manifest, three page files, the media file; the manifest's
effective settings, per-page classification, the VS-NfD frontmatter and
marking preserved in the classified page's Markdown, and the attachment's
sha256 present. Plus six api tests (including that an unembedded attachment
travels and that a Site Admin gets a complete archive without membership) and
the a11y pack 11/11 in both schemes, which now also scans the pond settings
screen.

Not done, because there is nothing to attach it to: the Site Admin's purge
dialog (#193) exists only as an api endpoint — there is no pond-trash UI in
the web app. The api half is here and tested, so it becomes a link when that
screen is built.
2026-08-01 20:24:35 +02:00
..
adr #303: operator-uploaded fonts — storage, API, PDF embedding, backup 2026-08-01 14:49:13 +02:00
audit-events.md #305: a full pond archive before deletion and before purge 2026-08-01 20:24:35 +02:00
data-model.md #217: map IdP groups and roles onto the permission model 2026-07-31 13:09:11 +02:00
deployment.md Re-align the stage tables after the path change 2026-07-14 12:53:11 +02:00
operations.md #288: reset schema before pg_restore — partitioned tables broke --clean 2026-07-31 17:00:05 +02:00
permissions.md #217: map IdP groups and roles onto the permission model 2026-07-31 13:09:11 +02:00
plugin-architecture.md #232: plugin allowlist with SHA-256 hash pinning 2026-07-31 21:26:36 +02:00
pond-archive-format.md #305: a full pond archive before deletion and before purge 2026-08-01 20:24:35 +02:00
README.md docs: ADR 0017 — Barrierefreiheit als Standard-Anforderung 2026-07-21 17:17:26 +02:00
realtime-collaboration.md Scaffold pnpm monorepo with lint, format, and test tooling 2026-07-04 19:06:27 +02:00
roadmap.md Add M13 to the roadmap 2026-07-14 16:37:24 +02:00
security.md #306: instance branding — logo and favicon, cropped in the browser 2026-08-01 19:30:52 +02:00

Dorfteich — Architecture Overview

This directory is the authoritative architecture documentation. Every implementation story references the documents here; when a story and this documentation disagree, clarify before coding.

System context

Dorfteich is shipped as a set of Docker containers behind a reverse proxy. One deployment = one instance (e.g. dorfteich.online, or a self-hosted installation).

flowchart LR
    subgraph clients [Clients]
        B[Browser SPA<br/>React + TipTap + Yjs]
    end
    subgraph instance [Dorfteich instance - Docker Compose]
        RP[Reverse proxy]
        WEB[web<br/>static SPA assets]
        API[api<br/>NestJS REST]
        COLLAB[collab<br/>Hocuspocus WebSocket]
        PG[(PostgreSQL)]
        PAN[pandoc-server<br/>doc conversion]
        GOT[Gotenberg<br/>HTML to PDF]
        VOL[/uploads + plugins volume/]
    end
    B -- HTTPS --> RP
    RP --> WEB
    RP -- /api --> API
    RP -- /collab WebSocket --> COLLAB
    API --> PG
    COLLAB --> PG
    API --> PAN
    API --> GOT
    API --> VOL
    COLLAB -. permission checks .-> API
  • web serves the single-page application (static assets).
  • api owns all business logic: auth, ponds, pages, labels, permissions, quotas, import/export, plugin management, admin functions.
  • collab synchronizes CRDT documents (page content) and awareness (cursors) over WebSocket and persists document state to PostgreSQL. It authenticates clients with short-lived tokens issued by api.
  • pandoc-server and Gotenberg are internal-only conversion sidecars (Word/OpenOffice import/export, PDF export).
  • All page content lives in PostgreSQL; binary uploads (images, attachments) and installed plugins live on a Docker volume.

Documents

Architecture Decision Records (adr/)

ADR Decision
0001 TypeScript everywhere, pnpm monorepo
0002 PostgreSQL as the only database
0003 Yjs CRDT + Hocuspocus for real-time and offline collaboration
0004 TipTap (ProseMirror) as the WYSIWYG editor
0005 React + Vite single-page application
0006 NestJS + Prisma for the API server
0007 Cookie sessions, Argon2id, OIDC-ready identity model
0008 Sandboxed iframe plugins with a message-based API
0009 Pandoc + Gotenberg sidecars for import/export
0010 PostgreSQL full-text search behind a search interface
0011 Filesystem volume for uploads, DB-tracked quotas
0012 i18next with German and English from the start
0013 Page version history via Yjs snapshots, soft-delete trash
0014 CI/CD with Gitea Actions, staged promotion
0015 Nightly pg_dump + uploads sync, 30-day retention, off-host mirror
0016 Self-hosted Google Fonts, per-pond font configuration
0017 Accessibility (WCAG 2.1 AA) as a default requirement

Concept documents

Document Contents
data-model.md Entities and relations: users, ponds, pages, labels, grants, quotas, plugins
permissions.md Role model and the "most specific setting wins" resolution algorithm
realtime-collaboration.md CRDT document lifecycle, cursor sync, offline behavior, versioning hooks
plugin-architecture.md Plugin manifest, packaging, sandbox runtime, extension points, admin flows
deployment.md Compose stacks for Dev/Test/Int/Prod, environments, promotion pipeline
operations.md Monitoring, logging, backup/restore, update strategy for self-hosters
security.md Threat-driven security concept: authn/authz, sandboxing, uploads, secrets
roadmap.md Epics and milestones; the order stories are implemented in

Terminology

German (product vision) English (code, docs, issues)
Teich pond
Seite page
Teich-Admin Pond Admin
Bearbeitende Editor
Lesende Reader
Öffentlichkeit Public

Conventions for implementers

  • Language: English for code, comments, commit messages, and issues.
  • Write clear, human-readable code; document the "why", not the "what".
  • UI strings never appear hard-coded — always through i18n resources (see ADR 0012), with German and English translations added in the same change.
  • Every story lists the ADRs it depends on; read them before starting.
  • Every API route declares its access rule explicitly (a permission decorator, @Public(), or the Site-Admin guard — issue #52); permission checks run only through the shared resolution (permissions.md), never ad hoc. 404/403 policy: a denied read answers 404 so the existence of ponds and pages is not revealed; a denied write on something the user may read answers 403. Trash views require write capability and answer 404 on denial (ADR 0013).