import {z} from 'zod'

export type LoadFileType = 'INVOICE' | 'POD' | 'BOL' | 'RATE_CONFIRMATION' | 'LUMPER_RECEIPT' | 'OTHER';

export type LoadFileUploadReferenceNumbers = {invoiceNumber?: string | undefined};

export type LoadFileSourceType = 'CARRIER' | 'BROKER' | 'SHIPPER' | 'CONSIGNEE' | 'DRIVER' | 'OTHER';

export type LoadFileSourceIdentifierType = 'MC_NUMBER' | 'DOT_NUMBER' | 'SCAC' | 'EMAIL' | 'NAME' | 'EXTERNAL_ID';

export type LoadFileUploadSource = {type: LoadFileSourceType, identifierType: LoadFileSourceIdentifierType, identifier: string, name?: string | undefined};

export type LoadFileUploadRequest = {loadNum: string, internalLoadReference?: string | undefined, filename: string, fileType: LoadFileType, contentType: string, content: string, sizeBytes: number, checksum: string, referenceNumbers?: LoadFileUploadReferenceNumbers | undefined, source?: LoadFileUploadSource | undefined, createdAt?: string | undefined};

export type UploadDocumentEvent = {id: string, workflow: 'TRACK_AND_TRACE' | 'CARRIER_SUPPORT' | 'POD_COLLECTION' | 'LOAD_BUILDING' | 'CARRIER_SELECTION' | 'SCHEDULING' | 'CUSTOMER_SUPPORT' | 'null' | null, occurredAt: string, loadNumber: string | null, customerLoadInternalId: string | null, eventType: 'UPLOAD_DOCUMENT', data: LoadFileUploadRequest};

export type CreateApiUPLOADDOCUMENTArgs = {body: UploadDocumentEvent};

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

export const fileUploadSummary = z.object({total: z.number().int(), succeeded: z.number().int(), failed: z.number().int()});

export const fileUploadSuccess = z.object({filename: z.string(), success: z.literal(true), data: z.object({size: z.number().int(), contentType: z.string(), id: z.string().optional()})});

export const fileUploadFailure = z.object({filename: z.string(), success: z.literal(false), error: z.string()});

export const fileUploadResult = z.discriminatedUnion("success", [fileUploadSuccess, fileUploadFailure]);

export const batchFileUploadResponse = z.object({summary: fileUploadSummary, results: z.array(fileUploadResult)});

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
};

/**
 * Upload Document
 * 
 * POST /UPLOAD_DOCUMENT
 */
export const createApiUPLOADDOCUMENT = async (args: CreateApiUPLOADDOCUMENTArgs, options: CreateApiUPLOADDOCUMENTOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

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