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mangabaka-seeder/docs/ARCHITECTURE.md
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Lucas WintherandClaude Opus 5.5 34e671932a docs: cap the covers folder size; refuse uploads when full
MBSEED_STORAGE_MAX_BYTES (default 1 GiB) limits the folder. Uploads past
it get 507 and nothing is evicted early, since older files may still be
under MangaBaka review.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-14 22:12:55 +02:00

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# Architecture
How `mangabaka-seeder` is built today. Update in the same commit as any structural change.
## Overview
No code exists yet. The design is in [`specs/001-webtoons-covers.md`](specs/001-webtoons-covers.md):
one pure TypeScript core (`src/core/`) that turns a MangaBaka series link and a Webtoons series
link into a cover submission, used by three front ends — a static page served by a small
self-hosted Bun server (primary), a userscript, and later a Bun CLI. Replace this section with reality as modules land.
## Map (planned — spec §4)
| Path | Responsibility |
|---|---|
| `src/core/` | Pure pipeline: sources, Wayback history, image inspection, dedupe, seed, MangaBaka client. No DOM, Bun, Node or `GM_*` APIs. |
| `src/web/` | Static page UI. |
| `src/server/` | Web-standard `fetch` handler (`app.ts`) run by `bun.ts` (`Bun.serve`, behind our reverse proxy). Static assets, `/api/fetch` allowlisted proxy, `/api/upload`, `/covers/*` from the storage folder (30-day sweep, total size cap). Gate and Workers entry deferred. |
| `src/userscript/` | Userscript on mangabaka.org; network via `GM_xmlhttpRequest`. |
| `src/cli/` | Later: Bun CLI. |
| `test/fixtures/` | Saved real responses; tests never hit the network. |
## Data flow
Links → series id + `source.resolve` → current + Wayback candidates → inspect (bytes, size,
sha256) → dedupe against MangaBaka → seed → user reviews → rehost (explicit) → submit or manual entry.
## External dependencies
| Service | Reached via | If unavailable |
|---|---|---|
| `api.mangabaka.org` | direct (CORS open) | Nothing works. |
| Webtoons HTML / `swebtoon-phinf.pstatic.net` | server proxy or `GM_xmlhttpRequest` | Nothing works. |
| Wayback (`web.archive.org`) | same | Warning; current covers only. |
| Server storage (folder on our server) | server | `server` host hidden; litterbox/catbox/direct still work. |
| litterbox / catbox | browser directly (litterbox), server or `GM_xmlhttpRequest` (catbox) | That host fails; others still work. |
## Invariants
- `src/core/` never imports from `web/`, `server/`, `userscript/` or `cli/`.
- The MangaBaka token is only ever sent to `api.mangabaka.org`, never through our server.
- The covers folder never exceeds `MBSEED_STORAGE_MAX_BYTES`; when full, uploads are refused and
no file is deleted before its 30 days.
- Nothing is uploaded or submitted without an explicit user action; saves use `save_mode: "review"`.
- `/api/fetch` only fetches allowlisted hosts; `/api/upload` only takes a source URL, never bytes.
## Known rough edges
See the open questions in spec §7 and [`TODO.md`](TODO.md).