import {z} from 'zod'

export type GetApiApiV2SearchArgs = {query: string, sort_by?: ('updated_at' | 'created_at' | 'priority' | 'status' | 'ticket_type') | undefined, sort_order?: ('asc' | 'desc') | undefined, page?: number | undefined, per_page?: number | undefined};

export type GetApiApiV2SearchOptions = {baseUrl?: string | undefined, apiTokenAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const searchResultObject = z.object({created_at: z.string().optional(), default: z.boolean().optional(), deleted: z.boolean().optional(), description: z.string().optional(), id: z.number().int().optional(), name: z.string().optional(), result_type: z.string().optional(), updated_at: z.string().optional(), url: z.string().optional()});

export const searchResponse = z.object({count: z.number().int().optional(), facets: z.string().nullable().optional(), next_page: z.string().nullable().optional(), previous_page: z.string().nullable().optional(), results: z.array(searchResultObject).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
};

/**
 * List Search Results
 * 
 * GET /api/v2/search
 */
export const getApiApiV2Search = async (args: GetApiApiV2SearchArgs, options?: GetApiApiV2SearchOptions) => {
const {baseUrl = "https://example.zendesk.com", fetch: fetchFn = fetch, apiTokenAuth} = options ?? {}

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

if (args.query != null) query.append("query", String(args.query))
if (args.sort_by != null) query.append("sort_by", String(args.sort_by))
if (args.sort_order != null) query.append("sort_order", String(args.sort_order))
if (args.page != null) query.append("page", String(args.page))
if (args.per_page != null) query.append("per_page", String(args.per_page))
if (apiTokenAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${apiTokenAuth.username}:${apiTokenAuth.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/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(searchResponse, await res.json())
};