import {z} from 'zod'

export type LensSatelliteInfo = {collection_id: string, satellite_id: string};

export type LensFilter = {id: string, min: number, max: number};

export type LensGeometry = {coordinates: unknown, type?: string | undefined};

export type LensV2Query = {start_date: string, end_date: string, satellites: Array<LensSatelliteInfo>, filters?: Array<LensFilter> | undefined, geometry: LensGeometry, limit?: number | undefined};

export type CreateApiV0SearchArgs = {body: LensV2Query};

export type CreateApiV0SearchOptions = {baseUrl?: string | undefined, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const cosmosGeometryType = z.enum(["Point", "MultiPoint", "LineString", "MultiLineString", "Polygon", "MultiPolygon", "GeometryCollection"]);

export const cosmosGeometry = z.object({type: cosmosGeometryType.optional(), coordinates: z.unknown()});

export const cosmosProperties = z.object({altitude: z.number().optional(), constellation: z.string().optional(), created: z.string().optional(), datetime: z.string().optional(), description: z.string().optional(), "eo:cloud_cover": z.number().optional(), gsd: z.number().optional(), instruments: z.array(z.string()).optional(), license: z.string().optional(), platform: z.string().optional(), "proj:code": z.string().optional(), "proj:shape": z.array(z.number().int()).optional(), "proj:transform": z.array(z.number()).optional(), "rd:anomalous_pixels": z.number().optional(), "rd:earth_sun_distance": z.number().optional(), "rd:product_level": z.string().optional(), "rd:sat_id": z.string().optional(), "rd:type": z.string().optional(), "sci:doi": z.string().optional(), startdatetime: z.string().optional(), title: z.string().optional(), updated: z.string().optional(), "view:off_nadir": z.number().optional(), "view:scene_center_lat": z.number().optional(), "view:scene_center_lon": z.number().optional(), "view:sun_azimuth": z.number().optional(), "view:sun_elevation": z.number().optional()});

export const cosmosEoBand = z.object({center_wavelength: z.number().optional(), common_name: z.string().optional(), fwhm: z.number().optional(), name: z.string().optional(), solar_irradiance: z.number().optional()});

export const cosmosRasterBand = z.object({nodata: z.number().optional(), offset: z.number().optional(), scale: z.number().optional(), spatial_resolution: z.number().optional()});

export const cosmosAsset = z.object({"eo:bands": z.array(cosmosEoBand).optional(), href: z.string().optional(), "raster:bands": z.array(cosmosRasterBand).optional(), roles: z.array(z.string()).optional(), title: z.string().optional(), type: z.string().optional()});

export const cosmosLink = z.object({href: z.string(), rel: z.string(), title: z.string().optional(), type: z.string().optional()});

export const cosmosItem = z.object({id: z.string(), type: z.string().optional(), collection: z.string().optional(), stac_version: z.string().optional(), stac_extensions: z.array(z.string()).optional(), bbox: z.array(z.string()).optional(), geometry: cosmosGeometry.optional(), properties: cosmosProperties.optional(), assets: z.record(z.string(), cosmosAsset).optional(), links: z.array(cosmosLink).optional()});

export const lensV2Response = z.object({items: z.record(z.string(), cosmosItem).optional(), pagination: z.object({limit: z.number().int().optional(), skip: z.number().int().optional(), total: z.number().int().optional()}).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
};

/**
 * Search satellite images
 * 
 * POST /v0/search
 */
export const createApiV0Search = async (args: CreateApiV0SearchArgs, options?: CreateApiV0SearchOptions) => {
const {baseUrl = "https://api.pixxel.space", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (ApiKeyAuth !== undefined) headers.set("Authorization", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/v0/search${query.size > 0 ? `?${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(lensV2Response, await res.json())
};