# Media streamlining debug fix plan

Goal: make media rendering (avatars, team logos, league logos) deterministic, debuggable, and boring. Remove misleading stubs from runtime, converge on one URL shape (`/media/...`) end-to-end, and add observability so broken images can be diagnosed in minutes.

Non-goals:
- No CDN rollout (we still design for it).
- No “AI generation” pipeline. Keep existing deterministic SVG generation in [`MediaGenerationService`](core/media/domain/services/MediaGenerationService.ts:9).

## 1) Current state (facts from code)

### Backend (API)

- The canonical HTTP routes exist in [`MediaController`](apps/api/src/domain/media/MediaController.ts:25):
  - Team logo: `GET /media/teams/:teamId/logo` (SVG) [`getTeamLogo()`](apps/api/src/domain/media/MediaController.ts:72)
  - League logo: `GET /media/leagues/:leagueId/logo` (SVG) [`getLeagueLogo()`](apps/api/src/domain/media/MediaController.ts:83)
  - Driver avatar: `GET /media/avatar/:driverId` (SVG) [`getDriverAvatar()`](apps/api/src/domain/media/MediaController.ts:111)
  - Default: `GET /media/default/:variant` (PNG placeholder) [`getDefaultMedia()`](apps/api/src/domain/media/MediaController.ts:125)

- Seeding sets `logoRef` for teams/leagues to “generated” references:
  - Team: [`RacingTeamFactory.createTeams()`](adapters/bootstrap/racing/RacingTeamFactory.ts:26) sets [`MediaReference.generated()`](core/domain/media/MediaReference.ts:114) via line [`logoRef: MediaReference.generated('team', teamId)`](adapters/bootstrap/racing/RacingTeamFactory.ts:51)
  - League: [`RacingLeagueFactory.create()`](adapters/bootstrap/racing/RacingLeagueFactory.ts:14) sets [`logoRef: MediaReference.generated('league', leagueData.id)`](adapters/bootstrap/racing/RacingLeagueFactory.ts:403)

- Presenters resolve `MediaReference` → URL string via a `MediaResolverPort`:
  - Teams list: [`AllTeamsPresenter.present()`](apps/api/src/domain/team/presenters/AllTeamsPresenter.ts:25) resolves via [`this.mediaResolver.resolve()`](apps/api/src/domain/team/presenters/AllTeamsPresenter.ts:45)

### Frontend (Website)

- The landing page cards render with Next `Image`:
  - Team card: [`TeamCard`](apps/website/components/teams/TeamCard.tsx:67) uses [`<Image src={logoUrl}>`](apps/website/components/teams/TeamCard.tsx:101)

- Some UI code uses an internal URL builder that does not match the API’s route shapes:
  - [`getMediaUrl()`](apps/website/lib/utilities/media.ts:11) builds `/media/generated/team-logo/:id` etc.
  - Example usage: [`TeamLadderRow`](apps/website/components/teams/TeamLadderRow.tsx:18) uses [`getMediaUrl('team-logo', teamId)`](apps/website/components/teams/TeamLadderRow.tsx:29)

- Next.js image config currently allows localhost and allows SVG:
  - [`next.config.mjs`](apps/website/next.config.mjs:1) includes `remotePatterns` for `localhost:3001` and `dangerouslyAllowSVG: true`.

## 2) Suspected root causes (ranked)

### A. URL shape mismatch in Website fallback builder

The Website builder [`getMediaUrl()`](apps/website/lib/utilities/media.ts:11) generates paths like:

- `/media/generated/team-logo/:id`

But the API serves:

- `/media/teams/:id/logo` or `/media/generated/team/:id` (generic endpoint)

Result: 404s for any page that uses [`getMediaUrl()`](apps/website/lib/utilities/media.ts:11) instead of `logoUrl` returned by the API.

### B. Runtime accidentally uses the in-memory resolver (misleading)

In API Team DI, the runtime media resolver is currently the stub [`InMemoryMediaResolverAdapter`](adapters/media/MediaResolverInMemoryAdapter.ts:60) via [`TeamProviders`](apps/api/src/domain/team/TeamProviders.ts:28).

That adapter is explicitly described as “fake URLs” and has URL shapes that don’t match the API controller, e.g. system-default returns `${base}/default/${ref.variant}` in [`InMemoryMediaResolverAdapter.resolve()`](adapters/media/MediaResolverInMemoryAdapter.ts:80).

Even if team logos are “generated” and map to `/media/teams/:id/logo`, this is an architectural footgun:
- It makes it easy for other entity presenters (drivers/leagues/etc.) to emit non-existent URLs.
- It undermines confidence when debugging.

### C. Next.js `Image` error symptoms

You reported: Next.js `Image` errors about remote host not configured and or SVG blocked.

Given [`next.config.mjs`](apps/website/next.config.mjs:12) appears to allow `localhost:3001` and enables SVG, this suggests at least one of:
- The actual `src` host differs (e.g. `127.0.0.1`, `api:3000`, or another hostname).
- The `src` is not a valid URL string at runtime (empty string, malformed).
- A stale container is running with older config.

The plan below makes `src` always same-origin to the Website (relative `/media/...`), eliminating this entire class of errors.

## 3) Target architecture (strict, minimal, easy-to-reason)

### 3.1 Invariants (rules)

1) Canonical media URLs are always *paths* starting with `/media/`.
2) API DTO fields like `team.logoUrl` are either:
   - `null`, or
   - a path `/media/...` (never absolute URLs, never empty string).
3) The Website renders media using *only*:
   - DTO-provided `/media/...` URLs, or
   - a single shared Website builder that produces `/media/...` URLs matching the API routes.
4) The Website never needs to know `http://localhost:3001`.
5) All runtime resolution uses exactly one resolver implementation (no stubs).

### 3.2 One canonical path schema

Canonical HTTP paths (served by API, fetched by browser via Website proxy rewrite):

- Team logo SVG: `/media/teams/{teamId}/logo`
- League logo SVG: `/media/leagues/{leagueId}/logo`
- Driver avatar SVG: `/media/avatar/{driverId}`
- Defaults (PNG): `/media/default/{variant}`
- Uploaded: `/media/uploaded/{mediaId}`

`/media/generated/:type/:id` can remain, but should become an internal alias only (not returned by resolvers/presenters).

### 3.3 Single resolver for the whole API

- Runtime resolver: [`MediaResolverAdapter`](adapters/media/MediaResolverAdapter.ts:53) using the concrete sub-resolvers:
  - [`DefaultMediaResolverAdapter`](adapters/media/resolvers/DefaultMediaResolverAdapter.ts:34)
  - [`GeneratedMediaResolverAdapter`](adapters/media/resolvers/GeneratedMediaResolverAdapter.ts:35)
  - [`UploadedMediaResolverAdapter`](adapters/media/resolvers/UploadedMediaResolverAdapter.ts:37)

Resolver output must be *path-only*:
- For any `MediaReference`, `resolve()` returns `/media/...` or `null`.
- No `baseUrl` parameter is needed for DTOs.

Rationale: once URLs are path-only, the Website can proxy them and Next `Image` becomes deterministic.

### 3.4 Proper storage abstraction (core port) + adapter implementation

This is required to align with Clean Architecture rules in [`DATA_FLOW.md`](docs/architecture/DATA_FLOW.md:1) and avoid runtime stubs.

#### 3.4.1 Core (ports + use-cases)

We already have a core port [`MediaStoragePort`](apps/api/src/domain/media/MediaProviders.ts:9) used by the media use-cases (upload/delete). The plan is to make it real and remove mock usage in runtime.

Target responsibilities:

- Core Application port (interface): `MediaStoragePort`
  - `uploadMedia(file, metadata) -> { success, url?, filename?, storageKey?, contentType? }`
  - `deleteMedia(storageKey) -> void`
  - (optional but recommended) `getReadStream(storageKey) -> stream` or `getBytes(storageKey) -> Buffer`

- Core Domain entity (or value object): `Media` should reference a storage identifier (e.g. `storageKey`) and `contentType`.
  - The domain does not store absolute URLs.
  - The resolver + controller decide how a `storageKey` becomes `/media/uploaded/{id}`.

#### 3.4.2 Adapters (file storage)

Add a concrete adapter: `FileSystemMediaStorageAdapter` under `adapters/`.

Implementation rules:

- Store files under a single base directory (configured via env):
  - `GRIDPILOT_MEDIA_STORAGE_DIR=/data/media` (container path)
- Use deterministic, collision-resistant keys:
  - `uploaded/{mediaId}/{originalFilename}` or `uploaded/{mediaId}` (single-file per mediaId)
- Enforce content-type allowlist for images (at minimum `image/png`, `image/jpeg`, `image/svg+xml`).
- Never return public absolute URLs from the adapter. Return `storageKey` only.

Docker alignment:

- Add a named volume mounted into `api` container for persisted dev media.

#### 3.4.3 API serving route for uploaded media

The API endpoint [`GET /media/uploaded/:mediaId`](apps/api/src/domain/media/MediaController.ts:169) is currently a stub.

Target:

- Look up `Media` by `mediaId` in `IMediaRepository`.
- Read bytes/stream from `MediaStoragePort` using `storageKey`.
- Set headers:
  - `Content-Type: <stored contentType>`
  - `Cache-Control: public, max-age=31536000, immutable` (if content-addressed) OR `max-age=3600` (if mutable)
- Return 404 if missing.

This makes “uploaded” a first-class, debuggable path in the same `/media/...` scheme.

## 4) End-to-end trace (pseudocode)

This is the required mental model for debugging.

### 4.1 Seed → DB

```text
teamId = seedId(team-1)
team.logoRef = MediaReference.generated(team, teamId)
persist team.logoRef as JSON
```

### 4.2 API Use Case → Presenter → DTO

```text
usecase GetAllTeamsUseCase
  loads Team entities
  returns { teams: [{ id, name, logoRef, logoUrl: null, ... }] }

presenter AllTeamsPresenter
  for each team:
    ref = MediaReference.fromJSON(team.logoRef)
    dto.logoUrl = MediaResolver.resolve(ref)
      => /media/teams/{teamId}/logo
  response JSON contains logoUrl string or null
```

### 4.3 Website → React component → img src

```text
LandingService.getHomeDiscovery
  calls GET {apiBaseUrl}/teams/all
  creates TeamCardViewModel with dto.logoUrl

TeamCard
  Image src = team.logoUrl
  (src is relative /media/...)
```

### 4.4 Browser fetch → Website rewrite → API bytes

```text
browser GET http://localhost:3000/media/teams/{id}/logo
Next rewrite proxies to http://api:3000/media/teams/{id}/logo
API returns image/svg+xml bytes
browser renders
```

## 5) Debuggability improvements (must-have)

### 5.1 Add a debug resolve endpoint in API

Add `GET /media/debug/resolve` in [`MediaController`](apps/api/src/domain/media/MediaController.ts:25).

Input options:
- Query param `ref` as base64url JSON of `MediaReferenceProps`.
- Or explicit query params: `type`, `variant`, `avatarVariant`, `generationRequestId`, `mediaId`.

Output JSON:
- `ref`: the parsed ref (as JSON)
- `refHash`: same as [`MediaReference.hash()`](core/domain/media/MediaReference.ts:271)
- `resolvedPath`: `/media/...` or null
- `resolver`: which branch handled it (default or generated or uploaded or none)
- `notes`: validation warnings (e.g. generationRequestId format)

This endpoint exists to debug resolvers without hitting entity APIs.

### 5.2 Structured logs

Add structured logs on each media request:

- In [`MediaController.getTeamLogo()`](apps/api/src/domain/media/MediaController.ts:72) and similar endpoints:
  - log: route, entityId, cache-control chosen
  - log: svg length, deterministic seed used

- In resolver:
  - log: `refHash`, resolved path, branch

### 5.3 Curl recipes (copy/paste)

Teams API returning logoUrl:

```bash
curl -sS http://localhost:3001/teams/all | jq '.teams[0] | {id, name, logoUrl}'
```

Team logo bytes:

```bash
TEAM_ID=$(curl -sS http://localhost:3001/teams/all | jq -r '.teams[0].id')
curl -i http://localhost:3001/media/teams/$TEAM_ID/logo | sed -n '1,20p'
```

Expected:
- `HTTP/1.1 200 OK`
- `content-type: image/svg+xml`

Website proxy path (after rewrite is added):

```bash
curl -i http://localhost:3000/media/teams/$TEAM_ID/logo | sed -n '1,20p'
```

## 6) Concrete fixes (file-by-file)

### 6.1 Remove misleading runtime stubs

1) Stop using [`InMemoryMediaResolverAdapter`](adapters/media/MediaResolverInMemoryAdapter.ts:60) in API runtime providers.
   - Replace in [`TeamProviders`](apps/api/src/domain/team/TeamProviders.ts:28) (and similar providers in drivers/leagues if present) with the real [`MediaResolverAdapter`](adapters/media/MediaResolverAdapter.ts:53).

2) Ensure any “in-memory” resolver remains test-only:
   - Keep it referenced only in unit tests, not in app modules/providers.

### 6.2 Make resolver output path-only

Update [`MediaResolverAdapter.resolve()`](adapters/media/MediaResolverAdapter.ts:81) and sub-resolvers to return `/media/...` paths:

- [`DefaultMediaResolverAdapter.resolve()`](adapters/media/resolvers/DefaultMediaResolverAdapter.ts:44): `/media/default/...`
- [`GeneratedMediaResolverAdapter.resolve()`](adapters/media/resolvers/GeneratedMediaResolverAdapter.ts:45):
  - team → `/media/teams/{id}/logo`
  - league → `/media/leagues/{id}/logo`
  - driver → `/media/avatar/{id}`
- [`UploadedMediaResolverAdapter.resolve()`](adapters/media/resolvers/UploadedMediaResolverAdapter.ts:47): `/media/uploaded/{mediaId}`

Remove all “baseUrl” joining logic from resolvers.

### 6.3 Website must stop inventing wrong media URLs

1) Replace or delete [`getMediaUrl()`](apps/website/lib/utilities/media.ts:11).
   - Either remove it entirely, or redefine it to output canonical `/media/...` paths.

2) Update all call sites found via:
- [`TeamLadderRow`](apps/website/components/teams/TeamLadderRow.tsx:18)
- [`LeagueHeader`](apps/website/components/leagues/LeagueHeader.tsx:1)
- [`FriendPill`](apps/website/components/social/FriendPill.tsx:1)
- [`apps/website/app/teams/[id]/page.tsx`](apps/website/app/teams/[id]/page.tsx:195)
- [`apps/website/app/profile/page.tsx`](apps/website/app/profile/page.tsx:409)

to use either:
- DTO-provided URLs, or
- a single canonical builder aligned with API routes.

### 6.4 Add Website rewrite for `/media/*`

Extend [`next.config.mjs rewrites()`](apps/website/next.config.mjs:47) to also proxy `/media/:path*` to `http://api:3000/media/:path*` in dev.

This yields same-origin image URLs for the browser:
- `src=/media/...` always.

### 6.5 Tests

1) Unit tests for resolver mapping:
- Add tests around [`GeneratedMediaResolverAdapter.resolve()`](adapters/media/resolvers/GeneratedMediaResolverAdapter.ts:45) to ensure `team-<id>` → `/media/teams/<id>/logo`.

2) API presenter contract test:
- Verify `logoUrl` is `null` or starts with `/media/` in [`AllTeamsPresenter`](apps/api/src/domain/team/presenters/AllTeamsPresenter.ts:8).

3) E2E Playwright image smoke:
- Add a test that loads the landing page, finds at least one team logo `<img>`, and asserts the image request returns 200.
- Use existing Playwright config files like [`playwright.website.config.ts`](playwright.website.config.ts:1).

4) Media upload + serve integration test:

- Upload an image via `POST /media/upload`.
- Verify response includes a `mediaId` and DTO uses `/media/uploaded/{mediaId}` (path-only rule).
- Fetch `/media/uploaded/{mediaId}` and assert status 200 + correct `Content-Type`.

## 7) Mermaid flow (new architecture)

```mermaid
flowchart TD
  A[Bootstrap seed sets MediaReference] --> B[DB stores logoRef JSON]
  B --> C[API use case returns logoRef]
  C --> D[Presenter resolves ref to media path]
  D --> E[DTO logoUrl is slash media path]
  E --> F[Website renders Image src slash media path]
  F --> G[Next rewrite proxies to API media route]
  G --> H[MediaController returns SVG or PNG bytes]
```

## 8) TDD execution order (implementation guidance)

1) Add unit tests for canonical resolver mapping (generated/system-default/uploaded).
2) Change resolver implementations to return path-only and make tests pass.
3) Update API providers to use real resolver everywhere (remove runtime usage of in-memory resolver).
4) Add `/media/:path*` rewrite in Website.
5) Replace Website `getMediaUrl` and all call sites.
6) Add API debug endpoint and structured logs.
7) Replace mock `MediaStoragePort` with real filesystem adapter, wire env + volume.
8) Implement uploaded media serving endpoint (remove stub), add integration test.
9) Add Playwright test verifying image loads.

## 9) Acceptance criteria

1) `GET http://localhost:3001/teams/all` returns `logoUrl` values that are either `null` or begin with `/media/`.
2) `GET http://localhost:3000/media/teams/{id}/logo` returns 200 with `image/svg+xml`.
3) No Next `Image` remote-host/SVG errors in dev for logos.
4) Playwright test passes: at least one image request returns 200 on a real page.

5) Upload flow works end-to-end:
- `POST /media/upload` stores a file via filesystem adapter.
- `GET /media/uploaded/{mediaId}` returns the stored bytes with correct headers.