import {z} from 'zod'

export type GetApiApiV1ModelProvidersRegistryOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const getApiApiV1ModelProvidersRegistryResponse = z.object({registry: z.array(z.object({id: z.string().min(1), canonicalOpenClawId: z.string().min(1), aliases: z.array(z.string()), authModes: z.array(z.enum(["api-key", "aws-sdk", "oauth", "token"])), apiKind: z.enum(["openai-completions", "openai-responses", "openai-codex-responses", "anthropic-messages", "google-generative-ai", "github-copilot", "bedrock-converse-stream", "ollama"]), defaultBaseUrls: z.array(z.string()), controllerConfigurable: z.boolean().optional(), modelsPageVisible: z.boolean().optional(), region: z.enum(["global", "china", "local"]).optional(), signupUrl: z.string().optional(), supportsCustomBaseUrl: z.boolean().optional(), supportsModelDiscovery: z.boolean().optional(), supportsProxyMode: z.boolean().optional(), managedByAuthProfiles: z.boolean().optional(), requiresOauthRegion: z.boolean().optional(), authHeader: z.boolean().optional(), defaultHeaders: z.record(z.string(), z.string()).optional(), experimental: z.boolean().optional(), hidden: z.boolean().optional(), displayName: z.string().min(1), displayNameKey: z.string().optional(), descriptionKey: z.string().optional(), apiDocsUrl: z.string().optional(), apiKeyPlaceholder: z.string().optional(), defaultProxyUrl: z.string().optional(), logo: z.string().optional()}))});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * GET /api/v1/model-providers/registry
 */
export const getApiApiV1ModelProvidersRegistry = async (options: GetApiApiV1ModelProvidersRegistryOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/model-providers/registry${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(getApiApiV1ModelProvidersRegistryResponse, await res.json())
};