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 CreateApiArchiveSearchArgs = {body: SearchResource};

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

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

export const searchPostResponse = z.object({data: z.object({id: z.string().optional(), location: z.union([polygon, z.object({ref: z.object({uri: z.string().min(1)})})]).optional(), start_date: z.string().optional(), end_date: z.string().optional(), resolution: z.union([z.array(z.enum(["low", "medium", "high"])), z.enum(["low", "medium", "high"])]).optional(), coverage: z.number().gte(0).optional(), interval_length: z.number().gte(0).optional(), order_by: z.union([z.array(z.enum(["resolution", "cost", "coverage", "date", "-resolution", "-cost", "-coverage", "-date"])), z.enum(["resolution", "cost", "coverage", "date", "-resolution", "-cost", "-coverage", "-date"])]).optional(), created_at: z.string().optional(), off_nadir_angle: z.array(z.number().gte(-90).lte(90)).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
 * 
 * POST /archive/search
 */
export const createApiArchiveSearch = async (args: CreateApiArchiveSearchArgs, options?: CreateApiArchiveSearchOptions) => {
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 = `${baseUrl.replace(/\/+$/, '')}/archive/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(searchPostResponse, await res.json())
};