import {z} from 'zod'

export type GetApiBrandIdSignalsSignalIdArgs = {brand_id: number, signal_id: number};

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

export const aPISignalNarrative = z.object({what_happened: z.string().nullable().optional(), why_it_matters: z.string().nullable().optional(), what_to_do: z.string().nullable().optional()});

export const aPISignalSlice = z.object({platforms: z.array(z.string()).optional(), topic_labels: z.array(z.string()).optional(), geo_country: z.string().nullable().optional()});

export const aPISignalUrlMover = z.object({normalized_url: z.string(), owner: z.enum(["brand", "competitor"]), competitor_id: z.number().int().nullable().optional(), competitor_name: z.string().nullable().optional(), current_responses: z.number().int(), baseline_responses: z.number().int(), current_prompts: z.number().int(), baseline_prompts: z.number().int(), contribution: z.number().nullable().optional()});

export const aPISignal = z.object({id: z.number().int(), detected_for_date: z.string(), fingerprint: z.string(), subject_kind: z.enum(["brand", "competitor"]), alert_type: z.enum(["level_change", "trend"]), scope: z.enum(["account", "account_platform", "topic", "topic_platform"]), metric: z.string(), platform: z.string(), direction: z.enum(["up", "down", "none"]), tier: z.enum(["high", "confident", "worth_a_look", "provisional", "low_confidence", "underpowered", "untested"]), current_value: z.number(), baseline_value: z.number(), delta_absolute: z.number(), score: z.number().nullable().optional(), narrative_what: z.string(), narrative: aPISignalNarrative.nullable().optional(), slice: aPISignalSlice, window_current_start: z.string().nullable().optional(), window_current_end: z.string().nullable().optional(), baseline_definition: z.string().nullable().optional(), url_movers: z.array(aPISignalUrlMover).optional(), created_at: z.string()});

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 Signal
 * 
 * GET /{brand_id}/signals/{signal_id}
 */
export const getApiBrandIdSignalsSignalId = async (args: GetApiBrandIdSignalsSignalIdArgs, options?: GetApiBrandIdSignalsSignalIdOptions) => {
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 = `${baseUrl.replace(/\/+$/, '')}/${encodeURIComponent(String(args.brand_id))}/signals/${encodeURIComponent(String(args.signal_id))}${query.size > 0 ? `?${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(aPISignal, await res.json())
};