import {z} from 'zod'

export type PersonaEvalRunRequest = {question_ids: Array<string>};

export type CreateApiAdminPersonaEvalPersonaIdRunArgs = {persona_id: string, body: PersonaEvalRunRequest};

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

export const personaEvalResultRow = z.object({question_id: z.string(), question: z.string(), real: z.number().int(), generated: z.number().int(), abs_diff: z.number().int(), rationale: z.string(), baseline_generated: z.number().int(), baseline_abs_diff: z.number().int(), baseline_rationale: z.string()});

export const personaEvalMetricSummary = z.object({accuracy: z.number(), exact_match_count: z.number().int(), mean_absolute_error: z.number()});

export const personaEvalRunResponse = z.object({items: z.array(personaEvalResultRow), accuracy: z.number(), exact_match_count: z.number().int(), mean_absolute_error: z.number(), demographic_baseline: personaEvalMetricSummary});

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
};

/**
 * Persona Eval Run
 * 
 * POST /admin/persona-eval/{persona_id}/run
 */
export const createApiAdminPersonaEvalPersonaIdRun = async (args: CreateApiAdminPersonaEvalPersonaIdRunArgs, options: CreateApiAdminPersonaEvalPersonaIdRunOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/admin/persona-eval/${encodeURIComponent(String(args.persona_id))}/run${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(personaEvalRunResponse, await res.json())
};