import {z} from 'zod'

export type GetApiV2RolePlayGetScenarioArgs = {Authorization: string, role: string, lesson_id?: number | undefined, code: string};

export type GetApiV2RolePlayGetScenarioOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const getApiV2RolePlayGetScenarioResponse = z.object({code: z.number().int().optional(), data: z.object({ai_role: z.string().optional(), context: z.string().optional(), keywords: z.string().optional(), learn_word: z.array(z.number().int()).optional(), location: z.string().optional(), raw_msgs: z.array(z.string()).optional(), starting_text: z.string().optional(), starting_text_audio: z.string().optional(), user_task: z.string().optional()}).optional(), message: 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 role play practice for linear
 * 
 * GET /v2/role_play/get_scenario
 */
export const getApiV2RolePlayGetScenario = async (args: GetApiV2RolePlayGetScenarioArgs, options: GetApiV2RolePlayGetScenarioOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.Authorization != null) headers.set("Authorization", String(args.Authorization))
if (args.role != null) query.append("role", String(args.role))
if (args.lesson_id != null) query.append("lesson_id", String(args.lesson_id))
if (args.code != null) query.append("code", String(args.code))

const url = `${baseUrl.replace(/\/+$/, '')}/v2/role_play/get_scenario${query.size > 0 ? `?${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(getApiV2RolePlayGetScenarioResponse, await res.json())
};