import {z} from 'zod'

export type GetApiClustersArgs = {siteId?: string | undefined, bounds?: string | undefined, limit?: number | undefined, cursor?: string | undefined};

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

export const clusterLevel = z.number().int().gte(1).lte(3);

export const geometryCounts = z.object({point: z.number().int(), line: z.number().int(), area: z.number().int()});

export const polygonGeometry = z.object({type: z.literal("Polygon"), coordinates: z.array(z.array(z.array(z.number())))});

export const lineStringGeometry = z.object({type: z.literal("LineString"), coordinates: z.array(z.array(z.number()))});

export const multiLineStringGeometry = z.object({type: z.literal("MultiLineString"), coordinates: z.array(z.array(z.array(z.number())))});

export const clusterGeometry = z.discriminatedUnion("type", [polygonGeometry, lineStringGeometry, multiLineStringGeometry]);

export const cluster = z.object({id: z.string(), organizationId: z.string(), count: z.number().int(), parentId: z.string().nullable(), level: clusterLevel, siteTypes: z.array(z.string()), geometryCounts: geometryCounts, name: z.string(), centroid: z.array(z.number()), bounds: z.array(z.number()), geometry: clusterGeometry, deletedAt: z.number().nullable(), createdAt: z.number(), updatedAt: z.number()});

export const paginationMeta = z.object({cursor: z.string().nullable(), total: z.number().int().optional()});

export const getApiClustersResponse = z.object({data: z.array(cluster), meta: paginationMeta});

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
};

/**
 * List clusters
 * 
 * GET /clusters
 * 
 * Also accepts auth: ApiKeyAuth
 */
export const getApiClusters = async (args: GetApiClustersArgs, options: GetApiClustersOptions) => {
const {baseUrl, fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (args.siteId != null) query.append("siteId", String(args.siteId))
if (args.bounds != null) query.append("bounds", String(args.bounds))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.cursor != null) query.append("cursor", String(args.cursor))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

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