Expo plugin for react-native-permissions

react-native-permission-plugin.js

const {
  withPlugins,
  withDangerousMod,
  withInfoPlist,
} = require("@expo/config-plugins");
const fs = require("fs");
const path = require("path");

async function readFileAsync(path) {
  return fs.promises.readFile(path, "utf8");
}

async function saveFileAsync(path, content) {
  return fs.promises.writeFile(path, content, "utf8");
}

const withPodMods = (c) => {
  return withDangerousMod(c, [
    "ios",
    async (config) => {
      const file = path.join(config.modRequest.platformProjectRoot, "Podfile");
      let contents = await readFileAsync(file);

      const lines = contents.split("\n");

      const requireMatch = lines.findIndex((line) =>
        /scripts\/react_native_pods/.test(line)
      );
      const prepareProjectMatch = lines.findIndex((line) =>
        /prepare_react_native_project!/.test(line)
      );

      if (requireMatch === -1 || prepareProjectMatch === -1) {
        throw new Error(
          "Podfile template has changed. This mod will no longer work"
        );
      }

      let podFileContents = [
        ...lines.slice(0, requireMatch + 1),
        `require File.join(File.dirname(\`node --print "require.resolve('react-native-permissions/package.json')"\`), "scripts/setup")`,
        ...lines.slice(requireMatch + 1, prepareProjectMatch + 1),
        ``,
        `setup_permissions([`,
        `  'Bluetooth'`,
        `])`,
        ``,
        ...lines.slice(prepareProjectMatch + 6),
      ].join("\n");

      await saveFileAsync(file, podFileContents);
      return config;
    },
  ]);
};

const withPlistMod = (config) => {
  return withInfoPlist(config, (config) => {
    config.modResults["NSBluetoothAlwaysUsageDescription"] = "YOUR TEXT";
    config.modResults["NSBluetoothPeripheralUsageDescription"] = "YOUR TEXT";

    return config;
  });
};

module.exports = (config) => withPlugins(config, [withPodMods, withPlistMod]);