import * as j from "@char/justin";

export const providers = ["anthropic", "openai", "openai-codex", "opencode-go"] as const;
export type Provider = (typeof providers)[number];

export const providerNames: Record<Provider, string> = {
  anthropic: "Claude",
  openai: "ChatGPT / Codex",
  "openai-codex": "ChatGPT / Codex",
  "opencode-go": "OpenCode Go",
};

const window = j.obj({
  label: j.string,
  usedPercent: j.number,
  resetsAt: j.union(j.string, j.null),
});
export type UsageWindow = j.Infer<typeof window>;

export const usageSchema = j.union(
  j.obj({ status: j.literal("ok"), fetchedAt: j.string, windows: j.array(window) }),
  j.obj({ status: j.union(j.literal("unavailable"), j.literal("error")), message: j.string }),
);
export type SubscriptionUsage = j.Infer<typeof usageSchema>;

export function isProvider(value: string): value is Provider {
  return (providers as readonly string[]).includes(value);
}