import { promises } from 'fs';
import path from 'path';

import { ForwardedBaseModOptions, provider, withGeneratedBaseMods } from './createBaseMod';
import { ExportedConfig, ModConfig } from '../Plugin.types';
import { Colors, Manifest, Paths, Properties, Resources, Strings, Styles } from '../android';
import { AndroidManifest } from '../android/Manifest';
import { parseXMLAsync, writeXMLAsync } from '../utils/XML';
import { reverseSortString, sortObject, sortObjWithOrder } from '../utils/sortObject';

const { readFile, writeFile } = promises;

type AndroidModName = keyof Required<ModConfig>['android'];

function getAndroidManifestTemplate(config: ExportedConfig) {
  // Keep in sync with https://github.com/expo/expo/blob/master/templates/expo-template-bare-minimum/android/app/src/main/AndroidManifest.xml
  // TODO: Read from remote template when possible
  return parseXMLAsync(`
  <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="${
    config.android?.package ?? 'com.placeholder.appid'
  }">

    <uses-permission android:name="android.permission.INTERNET"/>
    <!-- OPTIONAL PERMISSIONS, REMOVE WHATEVER YOU DO NOT NEED -->
    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
    <!-- These require runtime permissions on M -->
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <!-- END OPTIONAL PERMISSIONS -->

    <queries>
      <!-- Support checking for http(s) links via the Linking API -->
      <intent>
        <action android:name="android.intent.action.VIEW" />
        <category android:name="android.intent.category.BROWSABLE" />
        <data android:scheme="https" />
      </intent>
    </queries>

    <application
      android:name=".MainApplication"
      android:label="@string/app_name"
      android:icon="@mipmap/ic_launcher"
      android:roundIcon="@mipmap/ic_launcher_round"
      android:allowBackup="false"
      android:theme="@style/AppTheme"
      android:usesCleartextTraffic="true"
    >
      <meta-data android:name="expo.modules.updates.EXPO_UPDATE_URL" android:value="YOUR-APP-URL-HERE"/>
      <meta-data android:name="expo.modules.updates.EXPO_SDK_VERSION" android:value="YOUR-APP-SDK-VERSION-HERE"/>
      <activity
        android:name=".MainActivity"
        android:label="@string/app_name"
        android:configChanges="keyboard|keyboardHidden|orientation|screenSize|uiMode"
        android:launchMode="singleTask"
        android:windowSoftInputMode="adjustResize"
        android:theme="@style/Theme.App.SplashScreen"
      >
        <intent-filter>
          <action android:name="android.intent.action.MAIN"/>
          <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
      </activity>
      <activity android:name="com.facebook.react.devsupport.DevSettingsActivity"/>
    </application>
  </manifest>
  `) as Promise<AndroidManifest>;
}

export function sortAndroidManifest(obj: AndroidManifest) {
  if (obj.manifest) {
    // Reverse sort so application is last and permissions are first
    obj.manifest = sortObject(obj.manifest, reverseSortString);

    if (Array.isArray(obj.manifest['uses-permission'])) {
      // Sort permissions alphabetically
      obj.manifest['uses-permission'].sort((a, b) => {
        if (a.$['android:name'] < b.$['android:name']) return -1;
        if (a.$['android:name'] > b.$['android:name']) return 1;
        return 0;
      });
    }

    if (Array.isArray(obj.manifest.application)) {
      // reverse sort applications so activity is towards the end and meta-data is towards the front.
      obj.manifest.application = obj.manifest.application.map((application) => {
        application = sortObjWithOrder(application, ['meta-data', 'service', 'activity']);

        if (Array.isArray(application['meta-data'])) {
          // Sort metadata alphabetically
          application['meta-data'].sort((a, b) => {
            if (a.$['android:name'] < b.$['android:name']) return -1;
            if (a.$['android:name'] > b.$['android:name']) return 1;
            return 0;
          });
        }
        return application;
      });
    }
  }
  return obj;
}

const defaultProviders = {
  dangerous: provider<unknown>({
    getFilePath() {
      return '';
    },
    async read() {
      return { filePath: '', modResults: {} };
    },
    async write() {},
  }),

  // Append a rule to supply gradle.properties data to mods on `mods.android.gradleProperties`
  manifest: provider<Manifest.AndroidManifest>({
    isIntrospective: true,
    getFilePath({ modRequest: { platformProjectRoot } }) {
      return path.join(platformProjectRoot, 'app/src/main/AndroidManifest.xml');
    },
    async read(filePath, config) {
      try {
        return await Manifest.readAndroidManifestAsync(filePath);
      } catch (error: any) {
        if (!config.modRequest.introspect) {
          throw error;
        }
      }
      return await getAndroidManifestTemplate(config);
    },
    async write(filePath, { modResults, modRequest: { introspect } }) {
      if (introspect) return;
      await Manifest.writeAndroidManifestAsync(filePath, sortAndroidManifest(modResults));
    },
  }),

  // Append a rule to supply gradle.properties data to mods on `mods.android.gradleProperties`
  gradleProperties: provider<Properties.PropertiesItem[]>({
    isIntrospective: true,

    getFilePath({ modRequest: { platformProjectRoot } }) {
      return path.join(platformProjectRoot, 'gradle.properties');
    },
    async read(filePath, config) {
      try {
        return await Properties.parsePropertiesFile(await readFile(filePath, 'utf8'));
      } catch (error) {
        if (!config.modRequest.introspect) {
          throw error;
        }
      }
      return [];
    },
    async write(filePath, { modResults, modRequest: { introspect } }) {
      if (introspect) return;
      await writeFile(filePath, Properties.propertiesListToString(modResults));
    },
  }),

  // Append a rule to supply strings.xml data to mods on `mods.android.strings`
  strings: provider<Resources.ResourceXML>({
    isIntrospective: true,

    async getFilePath({ modRequest: { projectRoot, introspect } }) {
      try {
        return await Strings.getProjectStringsXMLPathAsync(projectRoot);
      } catch (error: any) {
        if (!introspect) {
          throw error;
        }
      }
      return '';
    },

    async read(filePath, config) {
      try {
        return await Resources.readResourcesXMLAsync({ path: filePath });
      } catch (error) {
        if (!config.modRequest.introspect) {
          throw error;
        }
      }
      return { resources: {} };
    },
    async write(filePath, { modResults, modRequest: { introspect } }) {
      if (introspect) return;
      await writeXMLAsync({ path: filePath, xml: modResults });
    },
  }),

  colors: provider<Resources.ResourceXML>({
    isIntrospective: true,

    async getFilePath({ modRequest: { projectRoot, introspect } }) {
      try {
        return await Colors.getProjectColorsXMLPathAsync(projectRoot);
      } catch (error: any) {
        if (!introspect) {
          throw error;
        }
      }
      return '';
    },

    async read(filePath, { modRequest: { introspect } }) {
      try {
        return await Resources.readResourcesXMLAsync({ path: filePath });
      } catch (error: any) {
        if (!introspect) {
          throw error;
        }
      }
      return { resources: {} };
    },
    async write(filePath, { modResults, modRequest: { introspect } }) {
      if (introspect) return;
      await writeXMLAsync({ path: filePath, xml: modResults });
    },
  }),

  colorsNight: provider<Resources.ResourceXML>({
    isIntrospective: true,

    async getFilePath({ modRequest: { projectRoot, introspect } }) {
      try {
        return await Colors.getProjectColorsXMLPathAsync(projectRoot, { kind: 'values-night' });
      } catch (error: any) {
        if (!introspect) {
          throw error;
        }
      }
      return '';
    },
    async read(filePath, config) {
      try {
        return await Resources.readResourcesXMLAsync({ path: filePath });
      } catch (error: any) {
        if (!config.modRequest.introspect) {
          throw error;
        }
      }
      return { resources: {} };
    },
    async write(filePath, { modResults, modRequest: { introspect } }) {
      if (introspect) return;
      await writeXMLAsync({ path: filePath, xml: modResults });
    },
  }),

  styles: provider<Resources.ResourceXML>({
    isIntrospective: true,

    async getFilePath({ modRequest: { projectRoot, introspect } }) {
      try {
        return await Styles.getProjectStylesXMLPathAsync(projectRoot);
      } catch (error: any) {
        if (!introspect) {
          throw error;
        }
      }
      return '';
    },
    async read(filePath, config) {
      let styles: Resources.ResourceXML = { resources: {} };

      try {
        // Adds support for `tools:x`
        styles = await Resources.readResourcesXMLAsync({
          path: filePath,
          fallback: `<?xml version="1.0" encoding="utf-8"?><resources xmlns:tools="http://schemas.android.com/tools"></resources>`,
        });
      } catch (error: any) {
        if (!config.modRequest.introspect) {
          throw error;
        }
      }

      // Ensure support for tools is added...
      if (!styles.resources.$) {
        styles.resources.$ = {};
      }
      if (!styles.resources.$?.['xmlns:tools']) {
        styles.resources.$['xmlns:tools'] = 'http://schemas.android.com/tools';
      }
      return styles;
    },
    async write(filePath, { modResults, modRequest: { introspect } }) {
      if (introspect) return;
      await writeXMLAsync({ path: filePath, xml: modResults });
    },
  }),

  projectBuildGradle: provider<Paths.GradleProjectFile>({
    getFilePath({ modRequest: { projectRoot } }) {
      return Paths.getProjectBuildGradleFilePath(projectRoot);
    },
    async read(filePath) {
      return Paths.getFileInfo(filePath);
    },
    async write(filePath, { modResults: { contents } }) {
      await writeFile(filePath, contents);
    },
  }),

  settingsGradle: provider<Paths.GradleProjectFile>({
    getFilePath({ modRequest: { projectRoot } }) {
      return Paths.getSettingsGradleFilePath(projectRoot);
    },
    async read(filePath) {
      return Paths.getFileInfo(filePath);
    },
    async write(filePath, { modResults: { contents } }) {
      await writeFile(filePath, contents);
    },
  }),

  appBuildGradle: provider<Paths.GradleProjectFile>({
    getFilePath({ modRequest: { projectRoot } }) {
      return Paths.getAppBuildGradleFilePath(projectRoot);
    },
    async read(filePath) {
      return Paths.getFileInfo(filePath);
    },
    async write(filePath, { modResults: { contents } }) {
      await writeFile(filePath, contents);
    },
  }),

  mainActivity: provider<Paths.ApplicationProjectFile>({
    getFilePath({ modRequest: { projectRoot } }) {
      return Paths.getProjectFilePath(projectRoot, 'MainActivity');
    },
    async read(filePath) {
      return Paths.getFileInfo(filePath);
    },
    async write(filePath, { modResults: { contents } }) {
      await writeFile(filePath, contents);
    },
  }),

  mainApplication: provider<Paths.ApplicationProjectFile>({
    getFilePath({ modRequest: { projectRoot } }) {
      return Paths.getProjectFilePath(projectRoot, 'MainApplication');
    },
    async read(filePath) {
      return Paths.getFileInfo(filePath);
    },
    async write(filePath, { modResults: { contents } }) {
      await writeFile(filePath, contents);
    },
  }),
};

type AndroidDefaultProviders = typeof defaultProviders;

export function withAndroidBaseMods(
  config: ExportedConfig,
  {
    providers,
    ...props
  }: ForwardedBaseModOptions & { providers?: Partial<AndroidDefaultProviders> } = {}
): ExportedConfig {
  return withGeneratedBaseMods<AndroidModName>(config, {
    ...props,
    platform: 'android',
    providers: providers ?? getAndroidModFileProviders(),
  });
}

export function getAndroidModFileProviders() {
  return defaultProviders;
}