import {z} from 'zod'

export type Type = string;

export type ProductName = string;

export type Keys = Array<string>;

export type AssetLocator = {type: Type, product?: ProductName | undefined, keys: Keys};

export type CreateApiFindPopularityArgs = {body: Array<AssetLocator>};

export type CreateApiFindPopularityOptions = {baseUrl: string, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const type = z.string();

export const productName = z.string();

export const keys = z.array(z.string());

export const assetLocator = z.object({type: type, product: productName.optional(), keys: keys});

export const popularity = z.object({score: z.string().optional(), calculatedAt: z.string().optional()});

export const usageData = z.object({fromDate: z.string().optional(), toDate: z.string().optional(), queryCount: z.number().int().optional(), distinctUsers: z.number().int().optional()});

export const findPopularityResponse = z.object({assetLocator: z.array(assetLocator), popularity: popularity.optional(), usageData: usageData.optional(), errorMessage: z.string().optional()});

export const createApiFindPopularityResponse = z.array(findPopularityResponse);

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
};

/**
 * Find Popularity
 * 
 * POST /findPopularity
 * 
 * Also accepts auth: jwtAuth, oauth2, oauth2
 */
export const createApiFindPopularity = async (args: CreateApiFindPopularityArgs, options: CreateApiFindPopularityOptions) => {
const {baseUrl, fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

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