import {z} from 'zod'

export type GetApiAdminFeedExplainArgs = {userId: string, postId: number, mode?: string | undefined};

export type GetApiAdminFeedExplainOptions = {baseUrl?: string | undefined, oauth2?: string | undefined, fetch?: typeof fetch | undefined};

export const fireAntApiModelsFeedFeedExplanation = z.object({postId: z.number().int().optional(), mode: z.string().optional(), bucket: z.number().int().optional(), inPool: z.boolean().optional(), isCandidate: z.boolean().optional(), filteredBy: z.string().optional(), rank: z.number().int().optional(), score: z.number().optional(), r: z.number().optional(), h: z.number().optional(), q: z.number().optional(), f: z.number().optional(), m: z.number().optional(), n: z.number().optional(), a: z.number().optional(), y: z.number().optional(), g: z.number().optional(), ageHours: z.number().optional(), sources: z.string().optional(), reasonCode: z.string().optional(), reasonParam: z.string().optional(), candidateCount: z.number().int().optional(), snapshotSize: z.number().int().optional(), elapsedMs: z.number().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
};

/**
 * Giải thích điểm của một bài với một người dùng (R, H, Q, F, M, N, nguồn, lý do, vị trí, hoặc lý do bị lọc)
 * 
 * GET /admin/feed/explain
 */
export const getApiAdminFeedExplain = async (args: GetApiAdminFeedExplainArgs, options?: GetApiAdminFeedExplainOptions) => {
const {baseUrl = "https://api.fireant.vn", fetch: fetchFn = fetch, oauth2} = options ?? {}

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

if (args.userId != null) query.append("userId", String(args.userId))
if (args.postId != null) query.append("postId", String(args.postId))
if (args.mode != null) query.append("mode", String(args.mode))
if (oauth2 !== undefined) headers.set('authorization', `Bearer ${oauth2}`)

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