// GitHub Copilot data-residency domain resolution.
//
// Lives inside the provider so the shared plugin SDK only needs to export the
// security-critical host allowlist (`normalizeGithubCopilotDomain`). The
// env/config precedence below is GitHub Copilot provider policy, not a
// plugin-SDK contract, so it is intentionally not part of the SDK surface.
import type { OpenClawConfig } from "openclaw/plugin-sdk/config-contracts";
import { normalizeGithubCopilotDomain } from "openclaw/plugin-sdk/provider-auth";

/** Public GitHub Copilot host used when no data-residency domain is configured. */
export const PUBLIC_GITHUB_COPILOT_DOMAIN = "github.com";

function readConfiguredGithubCopilotDomain(config?: OpenClawConfig): string | undefined {
  const params = config?.models?.providers?.["github-copilot"]?.params;
  const value = params && typeof params === "object" ? params.githubDomain : undefined;
  return typeof value === "string" && value.trim().length > 0 ? value.trim() : undefined;
}

/**
 * Resolve the GitHub Copilot host for this provider from (in priority order) the
 * `COPILOT_GITHUB_DOMAIN` env override, the persisted
 * `models.providers.github-copilot.params.githubDomain` config, then public
 * `github.com`. The result always passes through the SDK allowlist
 * (`normalizeGithubCopilotDomain`) so an unsafe value fails closed.
 */
export function resolveGithubCopilotDomain(params?: {
  env?: NodeJS.ProcessEnv;
  explicit?: string;
  config?: OpenClawConfig;
}): string {
  const env = params?.env ?? process.env;
  const fromEnv = env.COPILOT_GITHUB_DOMAIN?.trim();
  if (fromEnv) {
    return normalizeGithubCopilotDomain(fromEnv);
  }
  if (params?.explicit) {
    return normalizeGithubCopilotDomain(params.explicit);
  }
  return normalizeGithubCopilotDomain(readConfiguredGithubCopilotDomain(params?.config));
}

// Shortcut login must persist its token's tenant. A missing domain would route
// the tenant token back to github.com after the environment override is removed.
export function withGithubCopilotDomainConfig(cfg: OpenClawConfig, domain: string): OpenClawConfig {
  const models: NonNullable<OpenClawConfig["models"]> = cfg.models ?? {};
  const providers: NonNullable<typeof models.providers> = models.providers ?? {};
  const provider = providers["github-copilot"];
  const params = provider?.params;
  const isDefault = domain === PUBLIC_GITHUB_COPILOT_DOMAIN;
  if (isDefault && !(params && "githubDomain" in params)) {
    return cfg;
  }
  const nextParams: Record<string, unknown> = { ...params };
  if (isDefault) {
    delete nextParams.githubDomain;
  } else {
    nextParams.githubDomain = domain;
  }
  const nextProviders = { ...providers };
  if (provider) {
    nextProviders["github-copilot"] = { ...provider, params: nextParams };
  } else {
    // Source config accepts partial provider inputs; catalog materialization
    // supplies baseUrl/models before runtime consumption.
    Object.assign(nextProviders, { "github-copilot": { params: nextParams } });
  }
  return {
    ...cfg,
    models: {
      ...models,
      providers: nextProviders,
    },
  };
}