# Local live-E2E recipe

Purpose: how to stand up a real, running instance of this fork locally (dotnet host + built SPA)
for manual or Playwright-MCP-driven end-to-end verification — no live Docker/prod dependency.
**Update this doc (and `scripts/e2e-local.sh`) in the same PR that changes any convention below.**

This is for interactive/agent-driven verification, not CI (`docs/ci-cd.md` covers the CI pipeline,
which never runs the app itself).

## Why the steps are in this order

- **`ErsatzTV/Startup.cs`'s `/app` SPA middleware resolves its static-file root once, at startup**
  (`SpaStaticFileRoot()`, checked with `Directory.Exists` and swapped to a `NullFileProvider` if
  missing — see `Startup.cs` around the `app.MapWhen(... "/app" ...)` block). If `wwwroot/app`
  doesn't exist yet when the process starts, **the SPA will 404 forever until you restart the
  process** — copying the built files in after the fact does nothing for an already-running
  instance.
- The dotnet host and the SPA share **one port** (default 8409, `ETV_UI_PORT` / `SystemEnvironment.
  UiPort` in `ErsatzTV.Core/SystemEnvironment.cs`) — there's no separate dev server/proxy in this
  workflow; you're testing the actual production static-hosting path.
- A fresh config folder per run avoids state bleed (leftover channels/schedules/DB) between test
  sessions corrupting your assertions.

## Steps

1. **Build the prerequisites** (once, or after any source change):
   ```bash
   dotnet build ErsatzTV.sln
   cd web && npm run build && cd ..   # → ErsatzTV/wwwroot/app (vite.config.ts outDir)
   ```

2. **Copy `wwwroot` into the build output** (the `dotnet build` output directory does not
   automatically pick up `web/`'s build artifacts placed directly into the source `wwwroot`):
   ```bash
   cp -R ErsatzTV/wwwroot ErsatzTV/bin/Debug/net10.0/wwwroot
   ```
   If you rebuild the SPA (`npm run build`) while the dotnet process from step 4 is already
   running, **re-copy and then restart the process** — see the "why" note above; it will not pick
   up new files live.

3. **Use a fresh scratch config folder** — never reuse one across test runs:
   ```bash
   CONFIG_DIR=$(mktemp -d)
   ```

4. **Run the app**, pointed at the scratch folder:
   ```bash
   cd ErsatzTV/bin/Debug/net10.0
   ETV_CONFIG_FOLDER="$CONFIG_DIR" dotnet ErsatzTV.dll
   ```
   Wait for the log line **`Done migrating search index`** (emitted by
   `RebuildSearchIndexHandler` in `ErsatzTV.Application/Search/Commands/`, with a
   `... in {Duration}` suffix) — that's the last long-running startup step; before that, requests
   may 404/error. The UI and the entire `/api/*` surface are served on the **same port**, 8409 by
   default (override with `ETV_UI_PORT`).

5. **Seed data** as needed via the API — no API key is required for local mutating requests by
   default (`ApiKeyAuthorizationFilter` only enforces the `X-Api-Key` header when
   `Api:WriteKey` is configured; it's empty/unset in a fresh local config, so writes are open).
   Examples:
   - Create a channel: `POST /api/channels` — check the current
     `ErsatzTV/wwwroot/openapi/v1.json` (or `CreateChannelRequest.cs`) for the exact required field
     list before assuming these are complete, but as of this writing it requires (among plain
     fields) these enums: `PlayoutSource: "Generated"`, `PlayoutMode: "Continuous"`,
     `SongVideoMode: "Default"`, `TranscodeMode: "OnDemand"`, `IdleBehavior: "StopOnDisconnect"`.
   - Create a playout for an existing channel: `POST /api/playouts` with
     `{"channelId": <id>, "scheduleKind": "Block"}` (or `"Classic"`/`"Scripted"`/`"Sequential"` per
     `ChannelPlayoutSource`/schedule-kind enums — check `v1.json` for the current set).

6. **Tear down**: kill the `dotnet ErsatzTV.dll` process and confirm the port is freed
   (`lsof -i :8409` should return nothing) before starting another run — a stray process holding
   the port will make the next run's health check hang or fail confusingly.

## Playwright MCP screenshots

If you're driving the browser via the Playwright MCP server for visual verification, screenshots
land in **the MCP server process's own cwd** (this repo's root, not wherever you ran the dotnet
process from) — expect stray `*.png` files at the repo root after a session; this is tolerated,
not a bug to fix, but don't check them in.

## Script: `scripts/e2e-local.sh`

A copy of this script is included in this doc's directory; it is intended to land at
`scripts/e2e-local.sh` in the repo. It automates steps 2–4 above (build is assumed already done —
run `dotnet build` / `npm run build` yourself first, since rebuilding on every invocation is slow
and this script is meant to be re-run often during a debugging session).

Usage:
```bash
scripts/e2e-local.sh [CONFIG_DIR]
```
- `CONFIG_DIR` defaults to a fresh `mktemp -d` if omitted.
- Copies `ErsatzTV/wwwroot` → `ErsatzTV/bin/Debug/net10.0/wwwroot`.
- Launches `dotnet ErsatzTV.dll` in the background with `ETV_CONFIG_FOLDER` set.
- Waits (up to 120s) for the `Done migrating search index` log line.
- Prints the PID and port, then **exits leaving the server running** — the caller is responsible
  for killing the PID when done (`kill <PID>`).