import {z} from 'zod'

export type BoundariesQuery = {ids: Array<string>};

export type CreateApiV4BoundariesQueryArgs = {body: BoundariesQuery};

export type CreateApiV4BoundariesQueryOptions = {baseUrl?: string | undefined, apiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const geometry = z.object({type: z.enum(["Point", "Polygon", "MultiPolygon"]), coordinates: z.array(z.string())});

export const area = z.object({q: z.number(), u: z.string()});

export const point = z.object({coordinates: z.array(z.number()), type: z.string()});

export const boundaryProperties = z.object({area: area, centroid: point});

export const boundary = z.object({id: z.string(), type: z.literal("Feature"), geometry: geometry, properties: boundaryProperties});

export const boundaries = z.object({type: z.literal("FeatureCollection"), features: z.array(boundary)});

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
};

/**
 * Retrieve Boundaries in batch
 * 
 * POST /v4/boundaries/query
 * 
 * Also accepts auth: oauth2_authorization_code
 */
export const createApiV4BoundariesQuery = async (args: CreateApiV4BoundariesQueryArgs, options?: CreateApiV4BoundariesQueryOptions) => {
const {baseUrl = "https://platform.climate.com", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (apiKey !== undefined) headers.set("X-Api-Key", apiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/v4/boundaries/query${query.size > 0 ? `?${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(boundaries, await res.json())
};