Carlos Florêncio
45 lines
1.6 KiB
TypeScript
45 lines
1.6 KiB
TypeScript
"use server";
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import { getBackendConfig } from "@/lib/config";
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import { defaultFeaturesState } from "@/lib/state/slices/features/features-slice";
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import type { FeatureFlags } from "@/lib/state/slices/features/types";
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const { apiBaseUrl } = getBackendConfig();
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// Server-side feature-flag fetch. Called once per request from the root
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// layout so every page renders with the deployment's flags already in the
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// store. Falls back to defaults (all-off) when the backend is unreachable,
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// so a dev-server restart doesn't crash page rendering.
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//
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// Parsing is type-driven via `defaultFeaturesState.features`: every key
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// declared on FeatureFlags is read from the response and Boolean-coerced;
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// missing or non-bool values fall through to the default. Adding a flag
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// is therefore one entry in FeatureFlags + the default — no edit here.
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//
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// See docs/decisions/0007-runtime-feature-flags.md.
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export async function getFeatureFlagsAction(): Promise<FeatureFlags> {
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const url = `${apiBaseUrl}/api/v1/features`;
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const defaults = defaultFeaturesState.features;
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try {
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const response = await fetch(url, { cache: "no-store" });
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if (!response.ok) {
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return defaults;
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}
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const data = (await response.json()) as Record<string, unknown>;
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return normalizeFlags(data, defaults);
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} catch {
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return defaults;
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}
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}
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function normalizeFlags(data: Record<string, unknown>, defaults: FeatureFlags): FeatureFlags {
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const out = { ...defaults };
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for (const key of Object.keys(out) as (keyof FeatureFlags)[]) {
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const value = data[key];
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if (typeof value === "boolean") {
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out[key] = value;
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}
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}
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return out;
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}
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