import {z} from 'zod'

export type GetApiAiagentsProblemDescriptionArgs = {threadId: string, assistantId: string, enableMetrics?: boolean | undefined};

export type GetApiAiagentsProblemDescriptionOptions = {baseUrl?: string | undefined, oauth2?: string | undefined, fetch?: typeof fetch | undefined};

export const serviceChannelApiModelDashboardAssistantUsageTokens = z.object({PromptTokens: z.number().int().optional(), CompletionTokens: z.number().int().optional(), TotalTokens: z.number().int().optional()});

export const serviceChannelApiModelDashboardAssistantAssistantMetrics = z.object({ElapsedSeconds: z.number().int().optional(), Usage: serviceChannelApiModelDashboardAssistantUsageTokens.optional()});

export const serviceChannelApiModelDashboardAssistantAssistantResponseSystemString = z.object({Result: z.string().optional(), Metrics: serviceChannelApiModelDashboardAssistantAssistantMetrics.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
};

/**
 * Retrieves the description of a specific problem based on the provided issue choice.
 * 
 * GET /aiagents/ProblemDescription
 */
export const getApiAiagentsProblemDescription = async (args: GetApiAiagentsProblemDescriptionArgs, options?: GetApiAiagentsProblemDescriptionOptions) => {
const {baseUrl = "https://sb2api.servicechannel.com/v3", fetch: fetchFn = fetch, oauth2} = options ?? {}

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

if (args.threadId != null) query.append("threadId", String(args.threadId))
if (args.assistantId != null) query.append("assistantId", String(args.assistantId))
if (args.enableMetrics != null) query.append("enableMetrics", String(args.enableMetrics))
if (oauth2 !== undefined) headers.set('authorization', `Bearer ${oauth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/aiagents/ProblemDescription${query.size > 0 ? `?${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(serviceChannelApiModelDashboardAssistantAssistantResponseSystemString, await res.json())
};