context: add hosted and on-prem platform implementations

Wire up the actual RTK Query hooks, feature flags, and API slices
into static platform objects that satisfy the PlatformHooks contract,
keeping cockpit-specific code contained in onprem.ts.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: kingsleyzissou

src/context/platform/hosted.ts

@@ -0,0 +1,73 @@
+import useChrome from '@redhat-cloud-services/frontend-components/useChrome';
+import { useFlag as useUnleashFlag } from '@unleash/proxy-client-react';
+
+import { imageBuilderApi } from '@/store/api/backend/hosted/enhancedImageBuilderApi';
+import {
+  useComposeBlueprintMutation,
+  useCreateBlueprintMutation,
+  useDeleteBlueprintMutation,
+  useGetArchitecturesQuery,
+  useGetBlueprintComposesQuery,
+  useGetBlueprintQuery,
+  useGetBlueprintsQuery,
+  useGetComposesQuery,
+  useGetComposeStatusQuery,
+  useGetDistributionsQuery,
+  useGetOscapCustomizationsQuery,
+  useGetOscapProfilesQuery,
+  useLazyGetBlueprintsQuery,
+  useLazyGetOscapCustomizationsQuery,
+  useUpdateBlueprintMutation,
+} from '@/store/api/backend/hosted/imageBuilderApi';
+import {
+  contentSourcesApi,
+  useListSnapshotsByDateMutation,
+  useSearchRpmMutation,
+} from '@/store/api/contentSources/hosted';
+
+import type { PlatformHooks } from './types';
+
+const useHostedGetEnvironment = () => {
+  const { isBeta, isProd, getEnvironment } = useChrome();
+  if (isBeta() || getEnvironment() === 'qa') {
+    return { isBeta: () => true, isProd: isProd };
+  }
+  return { isBeta: () => false, isProd: isProd };
+};
+
+export const hostedPlatform: PlatformHooks = {
+  queries: {
+    // PlatformHooks uses the on-prem type which accepts wider input.
+    // The hosted version is narrower, but runtime behavior is identical.
+    useGetArchitecturesQuery:
+      useGetArchitecturesQuery as unknown as PlatformHooks['queries']['useGetArchitecturesQuery'],
+    useGetDistributionsQuery:
+      useGetDistributionsQuery as unknown as PlatformHooks['queries']['useGetDistributionsQuery'],
+    useGetBlueprintQuery,
+    useGetBlueprintsQuery,
+    useLazyGetBlueprintsQuery,
+    useGetOscapProfilesQuery,
+    useGetOscapCustomizationsQuery,
+    useLazyGetOscapCustomizationsQuery,
+    useGetComposesQuery,
+    useGetBlueprintComposesQuery,
+    useGetComposeStatusQuery,
+  },
+  mutations: {
+    useCreateBlueprintMutation,
+    useUpdateBlueprintMutation,
+    useDeleteBlueprintMutation,
+    useComposeBlueprintMutation,
+    useSearchRpmMutation,
+    useListSnapshotsByDateMutation,
+  },
+  env: {
+    useFlag: useUnleashFlag,
+    useGetEnvironment: useHostedGetEnvironment,
+  },
+  api: {
+    backendApi: imageBuilderApi,
+    contentSourcesApi,
+    useBackendPrefetch: imageBuilderApi.usePrefetch,
+  },
+};

src/context/platform/onprem.ts

@@ -0,0 +1,90 @@
+import {
+  useComposeBlueprintMutation,
+  useCreateBlueprintMutation,
+  useDeleteBlueprintMutation,
+  useGetArchitecturesQuery,
+  useGetBlueprintComposesQuery,
+  useGetBlueprintQuery,
+  useGetBlueprintsQuery,
+  useGetComposesQuery,
+  useGetComposeStatusQuery,
+  useGetDistributionsQuery,
+  useGetOscapCustomizationsQuery,
+  useGetOscapProfilesQuery,
+  useLazyGetBlueprintsQuery,
+  useLazyGetOscapCustomizationsQuery,
+  useUpdateBlueprintMutation,
+} from '@/store/api/backend/onprem/composerApi';
+import { composerApi } from '@/store/api/backend/onprem/enhancedComposerApi';
+import {
+  contentSourcesApi,
+  useListSnapshotsByDateMutation,
+  useSearchRpmMutation,
+} from '@/store/api/contentSources/onprem';
+
+import type { PlatformHooks } from './types';
+
+// Feature flag defaults for on-premises — Unleash is not available.
+// All flags default to false (default-deny). Add cases here when a
+// flag-gated feature needs to be enabled for on-prem users.
+export const onPremFlag = (_flag: string): boolean => {
+  return false;
+};
+
+// On-prem environment is static — hoist to avoid allocations per call
+const onPremEnv = { isBeta: () => false, isProd: () => true };
+
+// The on-prem hooks use OnPremBaseQuery which is structurally different from
+// the hosted FetchBaseQueryError used in PlatformHooks type definitions.
+// The runtime behavior is identical, so we cast individual hooks that diverge.
+export const onPremPlatform: PlatformHooks = {
+  queries: {
+    useGetArchitecturesQuery:
+      useGetArchitecturesQuery as unknown as PlatformHooks['queries']['useGetArchitecturesQuery'],
+    useGetDistributionsQuery:
+      useGetDistributionsQuery as unknown as PlatformHooks['queries']['useGetDistributionsQuery'],
+    useGetBlueprintQuery:
+      useGetBlueprintQuery as unknown as PlatformHooks['queries']['useGetBlueprintQuery'],
+    useGetBlueprintsQuery:
+      useGetBlueprintsQuery as unknown as PlatformHooks['queries']['useGetBlueprintsQuery'],
+    useLazyGetBlueprintsQuery:
+      useLazyGetBlueprintsQuery as unknown as PlatformHooks['queries']['useLazyGetBlueprintsQuery'],
+    useGetOscapProfilesQuery:
+      useGetOscapProfilesQuery as unknown as PlatformHooks['queries']['useGetOscapProfilesQuery'],
+    useGetOscapCustomizationsQuery:
+      useGetOscapCustomizationsQuery as unknown as PlatformHooks['queries']['useGetOscapCustomizationsQuery'],
+    useLazyGetOscapCustomizationsQuery:
+      useLazyGetOscapCustomizationsQuery as unknown as PlatformHooks['queries']['useLazyGetOscapCustomizationsQuery'],
+    useGetComposesQuery:
+      useGetComposesQuery as unknown as PlatformHooks['queries']['useGetComposesQuery'],
+    useGetBlueprintComposesQuery:
+      useGetBlueprintComposesQuery as unknown as PlatformHooks['queries']['useGetBlueprintComposesQuery'],
+    useGetComposeStatusQuery:
+      useGetComposeStatusQuery as unknown as PlatformHooks['queries']['useGetComposeStatusQuery'],
+  },
+  mutations: {
+    useCreateBlueprintMutation:
+      useCreateBlueprintMutation as unknown as PlatformHooks['mutations']['useCreateBlueprintMutation'],
+    useUpdateBlueprintMutation:
+      useUpdateBlueprintMutation as unknown as PlatformHooks['mutations']['useUpdateBlueprintMutation'],
+    useDeleteBlueprintMutation:
+      useDeleteBlueprintMutation as unknown as PlatformHooks['mutations']['useDeleteBlueprintMutation'],
+    useComposeBlueprintMutation:
+      useComposeBlueprintMutation as unknown as PlatformHooks['mutations']['useComposeBlueprintMutation'],
+    useSearchRpmMutation:
+      useSearchRpmMutation as unknown as PlatformHooks['mutations']['useSearchRpmMutation'],
+    useListSnapshotsByDateMutation:
+      useListSnapshotsByDateMutation as unknown as PlatformHooks['mutations']['useListSnapshotsByDateMutation'],
+  },
+  env: {
+    useFlag: onPremFlag,
+    useGetEnvironment: () => onPremEnv,
+  },
+  api: {
+    backendApi: composerApi as unknown as PlatformHooks['api']['backendApi'],
+    contentSourcesApi:
+      contentSourcesApi as unknown as PlatformHooks['api']['contentSourcesApi'],
+    useBackendPrefetch:
+      composerApi.usePrefetch as unknown as PlatformHooks['api']['useBackendPrefetch'],
+  },
+};