// Copyright 2019-2023 Tauri Programme within The Commons Conservancy
// SPDX-License-Identifier: Apache-2.0
// SPDX-License-Identifier: MIT

import { invoke } from "@tauri-apps/api/core";

export type PermissionState = "granted" | "denied" | "prompt";

export enum Format {
  QRCode = "QR_CODE",
  UPC_A = "UPC_A",
  UPC_E = "UPC_E",
  EAN8 = "EAN_8",
  EAN13 = "EAN_13",
  Code39 = "CODE_39",
  Code93 = "CODE_93",
  Code128 = "CODE_128",
  Codabar = "CODABAR",
  ITF = "ITF",
  Aztec = "AZTEC",
  DataMatrix = "DATA_MATRIX",
  PDF417 = "PDF_417",
}

export interface ScanOptions {
  cameraDirection?: "back" | "front";
  formats?: Format[];
  windowed?: boolean;
}

export interface Scanned {
  content: string;
  format: Format;
  bounds: unknown;
}

/**
 * Start scanning.
 * @param options
 */
export async function scan(options?: ScanOptions): Promise<Scanned> {
  return await invoke("plugin:barcode-scanner|scan", { ...options });
}

/**
 * Cancel the current scan process.
 */
export async function cancel(): Promise<void> {
  await invoke("plugin:barcode-scanner|cancel");
}

/**
 * Get permission state.
 */
export async function checkPermissions(): Promise<PermissionState> {
  return await invoke<{ camera: PermissionState }>(
    "plugin:barcode-scanner|check_permissions",
  ).then((r) => r.camera);
}

/**
 * Request permissions to use the camera.
 */
export async function requestPermissions(): Promise<PermissionState> {
  return await invoke<{ camera: PermissionState }>(
    "plugin:barcode-scanner|request_permissions",
  ).then((r) => r.camera);
}

/**
 * Open application settings. Useful if permission was denied and the user must manually enable it.
 */
export async function openAppSettings(): Promise<void> {
  await invoke("plugin:barcode-scanner|open_app_settings");
}