scrcpy-master/server/src/main/java/com/genymobile/scrcpy/Settings.java
package com.genymobile.scrcpy;

import com.genymobile.scrcpy.wrappers.ContentProvider;
import com.genymobile.scrcpy.wrappers.ServiceManager;

import android.os.Build;

import java.io.IOException;

public final class Settings {

    public static final String TABLE_SYSTEM = ContentProvider.TABLE_SYSTEM;
    public static final String TABLE_SECURE = ContentProvider.TABLE_SECURE;
    public static final String TABLE_GLOBAL = ContentProvider.TABLE_GLOBAL;

    private Settings() {
        /* not instantiable */
    }

    private static void execSettingsPut(String table, String key, String value) throws SettingsException {
        try {
            Command.exec("settings", "put", table, key, value);
        } catch (IOException | InterruptedException e) {
            throw new SettingsException("put", table, key, value, e);
        }
    }

    private static String execSettingsGet(String table, String key) throws SettingsException {
        try {
            return Command.execReadLine("settings", "get", table, key);
        } catch (IOException | InterruptedException e) {
            throw new SettingsException("get", table, key, null, e);
        }
    }

    public static String getValue(String table, String key) throws SettingsException {
        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.R) {
            // on Android >= 12, it always fails: <https://github.com/Genymobile/scrcpy/issues/2788>
            try (ContentProvider provider = ServiceManager.getActivityManager().createSettingsProvider()) {
                return provider.getValue(table, key);
            } catch (SettingsException e) {
                Ln.w("Could not get settings value via ContentProvider, fallback to settings process", e);
            }
        }

        return execSettingsGet(table, key);
    }

    public static void putValue(String table, String key, String value) throws SettingsException {
        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.R) {
            // on Android >= 12, it always fails: <https://github.com/Genymobile/scrcpy/issues/2788>
            try (ContentProvider provider = ServiceManager.getActivityManager().createSettingsProvider()) {
                provider.putValue(table, key, value);
            } catch (SettingsException e) {
                Ln.w("Could not put settings value via ContentProvider, fallback to settings process", e);
            }
        }

        execSettingsPut(table, key, value);
    }

    public static String getAndPutValue(String table, String key, String value) throws SettingsException {
        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.R) {
            // on Android >= 12, it always fails: <https://github.com/Genymobile/scrcpy/issues/2788>
            try (ContentProvider provider = ServiceManager.getActivityManager().createSettingsProvider()) {
                String oldValue = provider.getValue(table, key);
                if (!value.equals(oldValue)) {
                    provider.putValue(table, key, value);
                }
                return oldValue;
            } catch (SettingsException e) {
                Ln.w("Could not get and put settings value via ContentProvider, fallback to settings process", e);
            }
        }

        String oldValue = getValue(table, key);
        if (!value.equals(oldValue)) {
             putValue(table, key, value);
        }
        return oldValue;
    }
}
