import {z} from 'zod'

export type BoundingBox = {x1: number, x2: number, y1: number, y2: number};

export type TextElementInput = {bbox: BoundingBox, text: string};

export type LocateRequest = {image: string, model?: (string | null) | undefined, query: string, texts?: Array<TextElementInput> | undefined};

export type CreateApiApiV1ScreenshotsLocateArgs = {body: LocateRequest};

export type CreateApiApiV1ScreenshotsLocateOptions = {baseUrl?: string | undefined, AxilioApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const locateBBox = z.object({height: z.number().int().gt(0), width: z.number().int().gt(0), x: z.number().int().gte(0), y: z.number().int().gte(0)});

export const locateResponse = z.object({bbox: locateBBox.nullable().optional(), completion_tokens: z.number().int().gte(0).optional(), confidence: z.number().gte(0).lte(1), cost_microdollars: z.number().int().gte(0), found: z.boolean(), latency_ms: z.number().int().gte(0), matched_text_index: z.number().int().gte(0).nullable().optional(), model: z.string(), prompt_tokens: z.number().int().gte(0).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
};

/**
 * Locate In Screenshot
 * 
 * POST /api/v1/screenshots:locate
 */
export const createApiApiV1ScreenshotsLocate = async (args: CreateApiApiV1ScreenshotsLocateArgs, options?: CreateApiApiV1ScreenshotsLocateOptions) => {
const {baseUrl = "https://argus.axilio.ai", fetch: fetchFn = fetch, AxilioApiKey} = options ?? {}

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

if (AxilioApiKey !== undefined) headers.set("X-Axilio-Api-Key", AxilioApiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/screenshots:locate${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(locateResponse, await res.json())
};