import {z} from 'zod'

export type Region = 'JP' | 'NA' | 'CN' | 'KR' | 'TW';

export type GetApiRawRegionScriptSearchArgs = {region: Region, query: string, scriptFileName?: (string | null) | undefined, rawScript?: (boolean | null) | undefined, warId?: Array<number> | undefined, limit?: (number | null) | undefined};

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

export const scriptSearchResult = z.object({scriptId: z.string(), score: z.number(), snippets: z.array(z.string())});

export const getApiRawRegionScriptSearchResponse = z.array(scriptSearchResult);

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 and get script data
 * 
 * GET /raw/{region}/script/search
 */
export const getApiRawRegionScriptSearch = async (args: GetApiRawRegionScriptSearchArgs, options?: GetApiRawRegionScriptSearchOptions) => {
const {baseUrl = "https://api.atlasacademy.io", fetch: fetchFn = fetch} = 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.scriptFileName != null) query.append("scriptFileName", String(args.scriptFileName))
if (args.rawScript != null) query.append("rawScript", String(args.rawScript))
for (const item of args.warId ?? []) query.append("warId", String(item))
if (args.limit != null) query.append("limit", String(args.limit))

const url = `${baseUrl.replace(/\/+$/, '')}/raw/${encodeURIComponent(String(args.region))}/script/search${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(getApiRawRegionScriptSearchResponse, await res.json())
};