import {z} from 'zod'

export type CreateApiDemoNdviValuesPolygonArgs = {date_from: string, date_to: string, body: {[key: string]: unknown}};

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

export const response = z.object({x: z.string(), y: z.number().nullable().optional()});

export const ndviResponse = z.object({ndvi_values: z.array(response)});

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 Kermap Ndvi Values From Geojson Polygon Input (Epsg:4326)
 * 
 * POST /demo/ndvi-values-polygon/
 */
export const createApiDemoNdviValuesPolygon = async (args: CreateApiDemoNdviValuesPolygonArgs, options: CreateApiDemoNdviValuesPolygonOptions) => {
const {baseUrl, fetch: fetchFn = fetch, APIKeyQuery} = options ?? {}

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

if (args.date_from != null) query.append("date_from", String(args.date_from))
if (args.date_to != null) query.append("date_to", String(args.date_to))
if (APIKeyQuery !== undefined) query.set("kermap_token", APIKeyQuery)

const url = `${baseUrl.replace(/\/+$/, '')}/demo/ndvi-values-polygon/${query.size > 0 ? `?${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(ndviResponse, await res.json())
};