import {z} from 'zod'

export type GetApiApiV1LlmProvidersArgs = {type?: ('openai' | 'azure-openai' | 'anthropic' | 'bedrock' | 'ollama' | 'gemini' | 'custom') | undefined, enabled?: boolean | undefined, page?: number | undefined, page_size?: number | undefined};

export type GetApiApiV1LlmProvidersOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const lLMProviderHealthInfo = z.object({status: z.enum(["healthy", "unhealthy", "unknown"]).optional(), message: z.string().optional(), last_checked: z.string().optional()});

export const lLMProviderResource = z.object({name: z.string().optional(), type: z.enum(["openai", "azure-openai", "anthropic", "bedrock", "ollama", "gemini", "custom"]).optional(), endpoint: z.string().optional(), model: z.string().optional(), region: z.string().optional(), enabled: z.boolean().optional(), priority: z.number().int().optional(), weight: z.number().int().optional(), rate_limit: z.number().int().optional(), timeout_seconds: z.number().int().optional(), has_api_key: z.boolean().optional(), settings: z.record(z.string(), z.unknown()).optional(), health: lLMProviderHealthInfo.optional()});

export const paginationMeta = z.object({page: z.number().int().optional(), page_size: z.number().int().optional(), total_items: z.number().int().optional(), total_pages: z.number().int().optional()});

export const lLMProviderListResponse = z.object({providers: z.array(lLMProviderResource).optional(), pagination: paginationMeta.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
};

/**
 * List LLM providers
 * 
 * GET /api/v1/llm-providers
 */
export const getApiApiV1LlmProviders = async (args: GetApiApiV1LlmProvidersArgs, options?: GetApiApiV1LlmProvidersOptions) => {
const {baseUrl = "https://orchestrator.getaxonflow.com", fetch: fetchFn = fetch} = options ?? {}

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

if (args.type != null) query.append("type", String(args.type))
if (args.enabled != null) query.append("enabled", String(args.enabled))
if (args.page != null) query.append("page", String(args.page))
if (args.page_size != null) query.append("page_size", String(args.page_size))

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/llm-providers${query.size > 0 ? `?${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(lLMProviderListResponse, await res.json())
};