import {z} from 'zod'

export type Polygon = {type: 'Polygon', coordinates: Array<Array<Array<number>>>, bbox?: Array<number> | undefined};

export type SearchResource = {location?: (Polygon | {ref: {uri: string}}) | undefined, start_date?: string | undefined, end_date?: string | undefined, resolution?: (Array<'low' | 'medium' | 'high' | 'very_high'> | 'low' | 'medium' | 'high' | 'very_high') | undefined, coverage?: number | undefined, interval_length?: number | undefined, order_by?: (Array<'resolution' | 'cost' | 'coverage' | 'date' | '-resolution' | '-cost' | '-coverage' | '-date'> | 'resolution' | 'cost' | 'coverage' | 'date' | '-resolution' | '-cost' | '-coverage' | '-date') | undefined, off_nadir_angle?: Array<number> | undefined};

export type CreateApiDataSearchArgs = {body: SearchResource};

export type CreateApiDataSearchOptions = {baseUrl?: string | undefined, ApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const supportedGeojsonGeometry = z.object({type: z.literal("Polygon"), coordinates: z.array(z.array(z.array(z.unknown()))), bbox: z.array(z.number().gte(-180).lte(180)).optional()});

export const searchResponse = z.object({data: z.array(z.object({id: z.string().optional(), location: supportedGeojsonGeometry.optional(), intersection: supportedGeojsonGeometry.optional(), start_time: z.string().optional(), end_time: z.string().optional(), preview_uri: z.string().optional(), thumbnail_uri: z.string().optional(), resolution: z.number().gte(0).optional(), source: z.string().optional(), product_name: z.string().optional(), location_coverage_percentage: z.number().gte(0).lte(100).optional(), area_sq_km: z.number().gte(0).optional(), minimum_area_sq_km: z.number().gte(0).optional(), price_per_sq_km: z.number().gte(0).optional(), cost: z.union([z.string(), z.number().gte(0)]).optional(), result_cloud_cover_percentage: z.number().gte(0).lte(100).optional(), off_nadir_angle: z.number().gte(-90).lte(90).optional()})), pagination: z.object({per_page: z.number().int(), cursor: z.object({next: z.number().int().optional(), self: z.number().int().gte(0).optional()}), total: z.number().int().gte(0), count: z.number().int().gte(0)}).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 Archive
 * 
 * POST /data/search
 */
export const createApiDataSearch = async (args: CreateApiDataSearchArgs, options?: CreateApiDataSearchOptions) => {
const {baseUrl = "https://api.skywatch.co/earthcache", 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 = `${baseUrl.replace(/\/+$/, '')}/data/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(searchResponse, await res.json())
};