import {z} from 'zod'

export type GetApiSearchArgs = {limit?: number | undefined, name: string, active_only?: boolean | undefined, terminated?: boolean | undefined};

export type GetApiSearchOptions = {baseUrl?: string | undefined, Auth0?: string | undefined, fetch?: typeof fetch | undefined};

export const searchResult = z.object({id: z.number().int().optional(), entity_type: z.string().optional(), name: z.string().optional()});

export const listMetadata = z.object({status: z.string(), count: z.number().int(), total_count: z.number().int().optional(), offset: z.number().int().optional(), next_page: z.string().optional(), prev_page: z.string().optional()});

export const getApiSearchResponse = z.object({data: z.object({organizations: z.array(searchResult).optional(), agencies: z.array(searchResult).optional(), advertisers: z.array(searchResult).optional()}).optional(), meta: listMetadata.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 Entities
 * 
 * GET /search
 */
export const getApiSearch = async (args: GetApiSearchArgs, options?: GetApiSearchOptions) => {
const {baseUrl = "https://api.mediamath.com/api/v3.0", fetch: fetchFn = fetch, Auth0} = options ?? {}

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

if (args.limit != null) query.append("limit", String(args.limit))
if (args.name != null) query.append("name", String(args.name))
if (args.active_only != null) query.append("active_only", String(args.active_only))
if (args.terminated != null) query.append("terminated", String(args.terminated))
if (Auth0 !== undefined) headers.set('authorization', `Bearer ${Auth0}`)

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