import {z} from 'zod'

export type GetApiApiV1AdminPartsPartIdPricingPredictionArgs = {part_id: string, quantity?: number | undefined};

export type GetApiApiV1AdminPartsPartIdPricingPredictionOptions = {baseUrl: string, OAuth2PasswordBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const leadTimeOption = z.object({days: z.number().int(), multiplier: z.number(), label: z.string()});

export const trackBPrediction = z.object({predicted_unit: z.number(), predicted_low: z.number(), predicted_high: z.number(), median_uplift: z.number(), sample_size: z.number().int(), confidence: z.string(), calibration_source: z.record(z.string(), z.unknown())});

export const costPreviewResponse = z.object({unit_price_low: z.number().nullable().optional(), unit_price_mid: z.number().nullable().optional(), unit_price_high: z.number().nullable().optional(), lead_time_days: z.number().int().nullable().optional(), lead_time_options: z.record(z.string(), leadTimeOption).nullable().optional(), message: z.string().nullable().optional(), track_b: trackBPrediction.nullable().optional(), pricing_operations_source: z.enum(["legacy_summary", "projection_v2"]).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 Pricing Prediction
 * 
 * GET /api/v1/admin/parts/{part_id}/pricing-prediction
 */
export const getApiApiV1AdminPartsPartIdPricingPrediction = async (args: GetApiApiV1AdminPartsPartIdPricingPredictionArgs, options: GetApiApiV1AdminPartsPartIdPricingPredictionOptions) => {
const {baseUrl, fetch: fetchFn = fetch, OAuth2PasswordBearer} = options ?? {}

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

if (args.quantity != null) query.append("quantity", String(args.quantity))
if (OAuth2PasswordBearer !== undefined) headers.set('authorization', `Bearer ${OAuth2PasswordBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/admin/parts/${encodeURIComponent(String(args.part_id))}/pricing-prediction${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(costPreviewResponse, await res.json())
};