import {z} from 'zod'

export type TileMatrixSetNames = 'CanadianNAD83_LCC' | 'EPSG3413' | 'EPSG6933' | 'EuropeanETRS89_LAEAQuad' | 'LINZAntarticaMapTilegrid' | 'NZTM2000' | 'NZTM2000Quad' | 'UPSAntarcticWGS84Quad' | 'UPSArcticWGS84Quad' | 'UTM31WGS84Quad' | 'WebMercatorQuad' | 'WorldCRS84Quad' | 'WorldMercatorWGS84Quad';

export type GetApiApiV1LayersTilesTileMatrixSetIdLayerTilejsonJsonArgs = {layer: string, TileMatrixSetId: TileMatrixSetNames, minzoom?: number | undefined, maxzoom?: number | undefined};

export type GetApiApiV1LayersTilesTileMatrixSetIdLayerTilejsonJsonOptions = {baseUrl: string, OAuth2PasswordBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const schemeEnum = z.enum(["xyz", "tms"]);

export const tileJSON = z.object({tilejson: z.string().optional(), name: z.string().optional(), description: z.string().optional(), version: z.string().optional(), attribution: z.string().optional(), template: z.string().optional(), legend: z.string().optional(), scheme: schemeEnum.optional(), tiles: z.array(z.string()), grids: z.array(z.string()).optional(), data: z.array(z.string()).optional(), minzoom: z.number().int().gte(0).lte(30).optional(), maxzoom: z.number().int().gte(0).lte(30).optional(), bounds: z.array(z.number()).optional(), center: z.array(z.unknown()).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
};

/**
 * Tilejson
 * 
 * GET /api/v1/layers/tiles/{TileMatrixSetId}/{layer}/tilejson.json
 */
export const getApiApiV1LayersTilesTileMatrixSetIdLayerTilejsonJson = async (args: GetApiApiV1LayersTilesTileMatrixSetIdLayerTilejsonJsonArgs, options: GetApiApiV1LayersTilesTileMatrixSetIdLayerTilejsonJsonOptions) => {
const {baseUrl, fetch: fetchFn = fetch, OAuth2PasswordBearer} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/layers/tiles/${encodeURIComponent(String(args.TileMatrixSetId))}/${encodeURIComponent(String(args.layer))}/tilejson.json${query.size > 0 ? `?${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(tileJSON, await res.json())
};