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import type { Workspace } from "@/shared/types";
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type RootWorkspaceDecision = { kind: "redirect"; workspace: Workspace } | { kind: "empty" } | { kind: "unavailable" };
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interface ResolveRootWorkspaceDecisionInput {
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  lastVisitedWorkspaceId: string | null;
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  cachedWorkspaces: Workspace[];
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  liveWorkspaces: Workspace[] | null;
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}
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function findPreferredWorkspace(workspaces: Workspace[], lastVisitedId: string | null): Workspace | null {
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  if (lastVisitedId) {
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    const match = workspaces.find((w) => w.id === lastVisitedId);
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    if (match) return match;
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  }
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  return workspaces[0] ?? null;
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}
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export function resolveRootWorkspaceDecision({
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  lastVisitedWorkspaceId,
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  cachedWorkspaces,
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  liveWorkspaces,
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}: ResolveRootWorkspaceDecisionInput): RootWorkspaceDecision {
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  if (liveWorkspaces !== null) {
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    const liveTarget = findPreferredWorkspace(liveWorkspaces, lastVisitedWorkspaceId);
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    if (liveTarget) {
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      return { kind: "redirect", workspace: liveTarget };
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    }
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    return { kind: "empty" };
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  }
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  const cachedTarget = findPreferredWorkspace(cachedWorkspaces, lastVisitedWorkspaceId);
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  if (cachedTarget) {
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    return { kind: "redirect", workspace: cachedTarget };
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  }
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  return { kind: "unavailable" };
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}