Justin Visser
3684488d75
//go:embed needs internal/webdist/dist to exist at compile time, so a one-line placeholder index.html is committed there and the real build (Docker, or a manual copy of web/dist) overwrites it. One mux serves /, /api, and a /healthz for the compose healthcheck to come.
33 lines
1.2 KiB
Go
33 lines
1.2 KiB
Go
// Package webdist embeds the built frontend so one binary serves both
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// the dashboard and the API. `//go:embed` needs its directory to exist
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// at compile time, but the real build output (web/dist) is gitignored,
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// so this package commits a one-line placeholder dist/index.html that
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// keeps `go build` and `go test ./...` working everywhere. The
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// Dockerfile overwrites the placeholder with the real `npm run build`
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// output before compiling; to try that locally, copy web/dist over
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// internal/webdist/dist and `git restore` it afterwards.
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package webdist
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import (
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"embed"
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"io/fs"
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"net/http"
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)
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// The all: prefix embeds files whose names start with . or _ too, which
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// plain go:embed skips; vite output can contain such assets.
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//
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//go:embed all:dist
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var embeddedFiles embed.FS
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// Handler serves the embedded frontend. The dashboard is a single page
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// without client-side routes, so unknown paths get the file server's
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// plain 404 rather than a fallback to index.html.
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func Handler() http.Handler {
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distRoot, err := fs.Sub(embeddedFiles, "dist")
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if err != nil {
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// Unreachable: "dist" is compiled into embeddedFiles above.
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panic(err)
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}
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return http.FileServer(http.FS(distRoot))
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}
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