const {
  withAppBuildGradle,
  withGradleProperties,
} = require("expo/config-plugins");

const TARGET_KEYS = new Set([
  "org.gradle.java.installations.auto-detect",
  "org.gradle.java.installations.auto-download",
  "org.gradle.java.installations.fromEnv",
  "org.gradle.java.installations.paths",
]);

function upsertProperty(entries, key, value) {
  const existing = entries.find(
    (entry) => entry.type === "property" && entry.key === key
  );

  if (existing) {
    existing.value = value;
    return;
  }

  entries.push({ type: "property", key, value });
}

function addCppFlag(contents) {
  const flag = 'cppFlags "-Wno-error=deprecated-declarations"';
  if (contents.includes(flag)) {
    return contents;
  }

  return contents.replace(
    /(buildConfigField "String", "REACT_NATIVE_RELEASE_LEVEL", "[^\n]*"\n)/,
    `$1        externalNativeBuild {\n            cmake {\n                ${flag}\n            }\n        }\n`
  );
}

module.exports = function withPortableGradleToolchain(config) {
  config = withGradleProperties(config, (config) => {
    config.modResults = config.modResults.filter(
      (entry) => !(entry.type === "property" && TARGET_KEYS.has(entry.key))
    );

    upsertProperty(
      config.modResults,
      "org.gradle.java.installations.auto-detect",
      "false"
    );
    upsertProperty(
      config.modResults,
      "org.gradle.java.installations.auto-download",
      "false"
    );
    upsertProperty(
      config.modResults,
      "org.gradle.java.installations.fromEnv",
      "JAVA_HOME"
    );

    return config;
  });

  return withAppBuildGradle(config, (config) => {
    config.modResults.contents = addCppFlag(config.modResults.contents);
    return config;
  });
};