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Adds a doc comment on GetConfig spelling out that the endpoint is mounted on the unauthenticated route group (so the login page can fetch GoogleClientID / AllowSignup before the user is signed in) and that only instance-level public fields may be added. Prevents accidentally returning user- or tenant-scoped data from this handler in the future.
50 lines
1.8 KiB
Go
50 lines
1.8 KiB
Go
package handler
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import (
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"net/http"
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"os"
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)
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type AppConfig struct {
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CdnDomain string `json:"cdn_domain"`
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// Public auth config consumed by the web app at runtime so self-hosted
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// deployments do not need to rebuild the frontend image when operators
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// toggle signup or wire Google OAuth.
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AllowSignup bool `json:"allow_signup"`
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GoogleClientID string `json:"google_client_id,omitempty"`
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// PostHog public config for the frontend. The key is the same Project
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// API Key the backend uses; returning it here (instead of baking it
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// into the frontend bundle via NEXT_PUBLIC_*) means self-hosted
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// instances — whose server returns an empty key — automatically
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// disable frontend event shipping too.
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PosthogKey string `json:"posthog_key"`
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PosthogHost string `json:"posthog_host"`
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}
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// GetConfig is mounted on the public (unauthenticated) route group because
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// the web app calls it before login to decide whether to render the Google
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// sign-in button and signup UI. Only add fields here that are safe to expose
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// to anonymous callers — never user- or tenant-scoped data.
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func (h *Handler) GetConfig(w http.ResponseWriter, r *http.Request) {
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config := AppConfig{
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AllowSignup: os.Getenv("ALLOW_SIGNUP") != "false",
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GoogleClientID: os.Getenv("GOOGLE_CLIENT_ID"),
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}
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if h.Storage != nil {
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config.CdnDomain = h.Storage.CdnDomain()
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}
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// Re-read from env on every request so operators can rotate keys via
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// secret refresh without a server restart.
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if v := os.Getenv("ANALYTICS_DISABLED"); v != "true" && v != "1" {
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config.PosthogKey = os.Getenv("POSTHOG_API_KEY")
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config.PosthogHost = os.Getenv("POSTHOG_HOST")
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if config.PosthogHost == "" && config.PosthogKey != "" {
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config.PosthogHost = "https://us.i.posthog.com"
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}
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}
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writeJSON(w, http.StatusOK, config)
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}
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