import {z} from 'zod'

export type GetApiV2PdfToolsCapabilitiesOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const bluenteInternalPdftoolAttachmentCapability = z.object({accept: z.array(z.string()).optional(), max: z.number().int().optional(), max_file_mb: z.number().int().optional()});

export const bluenteInternalPdftoolPricing = z.object({min_credits: z.number().int().optional(), pages_per_credit: z.number().int().optional()});

export const bluenteInternalPdftoolToolCapability = z.object({accept: z.array(z.string()).optional(), attachments: bluenteInternalPdftoolAttachmentCapability.optional(), batch: z.boolean().optional(), max_file_mb: z.number().int().optional(), max_files: z.number().int().optional(), max_pages: z.number().int().optional(), max_total_mb: z.number().int().optional(), min_files: z.number().int().optional(), paid: z.boolean().optional(), pricing: bluenteInternalPdftoolPricing.optional(), tool: z.string().optional()});

export const getApiV2PdfToolsCapabilitiesResponse = z.object({code: z.number().int().optional(), data: z.object({daily_free_tasks: z.number().int().optional(), max_batch_files: z.number().int().optional(), max_running_tasks: z.number().int().optional(), retention_hours: z.number().int().optional(), tools: z.array(bluenteInternalPdftoolToolCapability).optional()}).optional(), message: z.string().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
};

/**
 * List the PDF tools with their limits and prices
 * 
 * GET /v2/pdf_tools/capabilities
 */
export const getApiV2PdfToolsCapabilities = async (options: GetApiV2PdfToolsCapabilitiesOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/v2/pdf_tools/capabilities${query.size > 0 ? `?${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(getApiV2PdfToolsCapabilitiesResponse, await res.json())
};