import {z} from 'zod'

export type GetApiV1RecommendationsArgs = {limit?: number | undefined, cursor?: string | undefined, q?: string | undefined, recommendationId?: Array<string> | undefined, resourceId?: Array<string> | undefined, recommendationName?: Array<string> | undefined, category?: Array<string> | undefined, accountId?: Array<string> | undefined, region?: Array<string> | undefined, service?: Array<string> | undefined, status?: ('open' | 'dismissed' | 'all') | undefined, startDate?: string | undefined, endDate?: string | undefined};

export type GetApiV1RecommendationsOptions = {baseUrl?: string | undefined, bearerApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const pagination = z.object({limit: z.number().int(), has_more: z.boolean(), next_cursor: z.string().nullable(), total: z.number().int().optional()});

export const getApiV1RecommendationsResponse = z.object({data: z.array(z.record(z.string(), z.unknown())), pagination: pagination});

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
};

/**
 * List recommendations
 * 
 * GET /v1/recommendations
 */
export const getApiV1Recommendations = async (args: GetApiV1RecommendationsArgs, options?: GetApiV1RecommendationsOptions) => {
const {baseUrl = "https://api.nops.io", fetch: fetchFn = fetch, bearerApiKey} = 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.cursor != null) query.append("cursor", String(args.cursor))
if (args.q != null) query.append("q", String(args.q))
for (const item of args.recommendationId ?? []) query.append("recommendationId", String(item))
for (const item of args.resourceId ?? []) query.append("resourceId", String(item))
for (const item of args.recommendationName ?? []) query.append("recommendationName", String(item))
for (const item of args.category ?? []) query.append("category", String(item))
for (const item of args.accountId ?? []) query.append("accountId", String(item))
for (const item of args.region ?? []) query.append("region", String(item))
for (const item of args.service ?? []) query.append("service", String(item))
if (args.status != null) query.append("status", String(args.status))
if (args.startDate != null) query.append("startDate", String(args.startDate))
if (args.endDate != null) query.append("endDate", String(args.endDate))
if (bearerApiKey !== undefined) headers.set('authorization', `Bearer ${bearerApiKey}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/recommendations${query.size > 0 ? `?${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(getApiV1RecommendationsResponse, await res.json())
};