import {z} from 'zod'

export type GetApiBrandIdAuditScoresSiteArgs = {brand_id: number};

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

export const displayedScore = z.object({retrievability: z.number(), citability: z.number()});

export const headroomMetricModel = z.object({current: z.number(), projected: z.number(), lift: z.number(), signals: z.number().int(), listable_signals: z.number().int()});

export const siteHeadroomModel = z.object({retrievability: headroomMetricModel, citeability: headroomMetricModel});

export const siteScoreModel = z.object({brand_id: z.number().int(), model_version: z.string(), generated_at: z.string(), n_pages: z.number().int(), total_prompts: z.number().int(), score: displayedScore, previous: displayedScore.nullable().optional(), previous_absent_reason: z.enum(["no_prior_run", "not_comparable"]).nullable().optional(), previous_absent_detail: z.string().nullable().optional(), worst_page_url: z.string().nullable().optional(), best_page_url: z.string().nullable().optional(), headroom: siteHeadroomModel.nullable().optional(), selection_changed_since_audit: z.boolean().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
};

/**
 * Get Site Audit Score
 * 
 * GET /{brand_id}/audit-scores/site
 */
export const getApiBrandIdAuditScoresSite = async (args: GetApiBrandIdAuditScoresSiteArgs, options?: GetApiBrandIdAuditScoresSiteOptions) => {
const {baseUrl = "https://api.scrunchai.com/v1", fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/${encodeURIComponent(String(args.brand_id))}/audit-scores/site${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(siteScoreModel, await res.json())
};