import {z} from 'zod'

export type GatewayCode = 'OK' | 'CANCELLED' | 'UNKNOWN' | 'INVALID_ARGUMENT' | 'DEADLINE_EXCEEDED' | 'NOT_FOUND' | 'ALREADY_EXISTS' | 'PERMISSION_DENIED' | 'UNAUTHENTICATED' | 'RESOURCE_EXHAUSTED' | 'FAILED_PRECONDITION' | 'ABORTED' | 'OUT_OF_RANGE' | 'UNIMPLEMENTED' | 'INTERNAL' | 'UNAVAILABLE' | 'DATA_LOSS';

export type GatewayStatus = {code?: GatewayCode | undefined, message?: string | undefined};

export type GatewayProvider = {id?: string | undefined, config?: {[key: string]: string} | undefined, label?: string | undefined};

export type AssertionAssertionType = 'ASSERTION_TYPE_UNSPECIFIED' | 'ASSERTION_TYPE_LLM' | 'ASSERTION_TYPE_CODE';

export type GatewayEvaluateOptions = {maxConcurrency?: number | undefined, repeat?: number | undefined, delay?: number | undefined};

export type GatewayLLMAssertion = {llmEvaluatorPrompt?: string | undefined, providers: Array<GatewayProvider>, prompts: Array<string>, evaluateOptions?: GatewayEvaluateOptions | undefined};

export type CodeAssertionExecutionOptions = {timeoutMs?: number | undefined, memoryLimitMb?: number | undefined, envVars?: {[key: string]: string} | undefined};

export type GatewayCodeAssertion = {language: string, code: string, expectedOutput?: string | undefined, options?: CodeAssertionExecutionOptions | undefined};

export type GatewayAssertion = {assertionType: AssertionAssertionType, llmAssertion?: GatewayLLMAssertion | undefined, codeAssertion?: GatewayCodeAssertion | undefined, metricName?: string | undefined};

export type GatewayEvaluation = {name?: string | undefined, createTime?: string | undefined, createdBy?: string | undefined, status?: GatewayStatus | undefined, evaluationType: string, description?: string | undefined, providers: Array<GatewayProvider>, assertions: Array<GatewayAssertion>, updateTime?: string | undefined};

export type GatewayGatewayCreateEvaluationBody = {evaluation: GatewayEvaluation, evaluationId?: string | undefined};

export type CreateApiV1AccountsAccountIdEvaluationsArgs = {account_id: string, body: GatewayGatewayCreateEvaluationBody};

export type CreateApiV1AccountsAccountIdEvaluationsOptions = {baseUrl: string, BearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const gatewayCode = z.enum(["OK", "CANCELLED", "UNKNOWN", "INVALID_ARGUMENT", "DEADLINE_EXCEEDED", "NOT_FOUND", "ALREADY_EXISTS", "PERMISSION_DENIED", "UNAUTHENTICATED", "RESOURCE_EXHAUSTED", "FAILED_PRECONDITION", "ABORTED", "OUT_OF_RANGE", "UNIMPLEMENTED", "INTERNAL", "UNAVAILABLE", "DATA_LOSS"]);

export const gatewayStatus = z.object({code: gatewayCode.optional(), message: z.string().optional()});

export const gatewayProvider = z.object({id: z.string().optional(), config: z.record(z.string(), z.string()).optional(), label: z.string().optional()});

export const assertionAssertionType = z.enum(["ASSERTION_TYPE_UNSPECIFIED", "ASSERTION_TYPE_LLM", "ASSERTION_TYPE_CODE"]);

export const gatewayEvaluateOptions = z.object({maxConcurrency: z.number().int().optional(), repeat: z.number().int().optional(), delay: z.number().int().optional()});

export const gatewayLLMAssertion = z.object({llmEvaluatorPrompt: z.string().optional(), providers: z.array(gatewayProvider), prompts: z.array(z.string()), evaluateOptions: gatewayEvaluateOptions.optional()});

export const codeAssertionExecutionOptions = z.object({timeoutMs: z.number().int().optional(), memoryLimitMb: z.number().int().optional(), envVars: z.record(z.string(), z.string()).optional()});

export const gatewayCodeAssertion = z.object({language: z.string(), code: z.string(), expectedOutput: z.string().optional(), options: codeAssertionExecutionOptions.optional()});

export const gatewayAssertion = z.object({assertionType: assertionAssertionType, llmAssertion: gatewayLLMAssertion.optional(), codeAssertion: gatewayCodeAssertion.optional(), metricName: z.string().optional()});

export const gatewayEvaluation = z.object({name: z.string().optional(), createTime: z.string().optional(), createdBy: z.string().optional(), status: gatewayStatus.optional(), evaluationType: z.string(), description: z.string().optional(), providers: z.array(gatewayProvider), assertions: z.array(gatewayAssertion), updateTime: 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
};

/**
 * Create Evaluation
 * 
 * POST /v1/accounts/{account_id}/evaluations
 */
export const createApiV1AccountsAccountIdEvaluations = async (args: CreateApiV1AccountsAccountIdEvaluationsArgs, options: CreateApiV1AccountsAccountIdEvaluationsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/accounts/${encodeURIComponent(String(args.account_id))}/evaluations${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

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

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