package utils;

import static androidx.test.core.app.ApplicationProvider.getApplicationContext;
import static androidx.test.espresso.Espresso.onView;
import static androidx.test.espresso.action.ViewActions.click;
import static androidx.test.espresso.assertion.ViewAssertions.matches;
import static androidx.test.espresso.matcher.ViewMatchers.isDisplayed;
import static androidx.test.espresso.matcher.ViewMatchers.withId;
import static androidx.test.espresso.matcher.ViewMatchers.withTagValue;
import static androidx.test.espresso.matcher.ViewMatchers.withText;
import static utils.CustomInteractions.tryResolve;

import android.content.Context;
import android.net.VpnService;
import android.os.Bundle;

import androidx.test.espresso.NoMatchingViewException;
import androidx.test.espresso.ViewInteraction;
import androidx.test.platform.app.InstrumentationRegistry;
import androidx.test.uiautomator.UiDevice;
import androidx.test.uiautomator.UiObject;
import androidx.test.uiautomator.UiObjectNotFoundException;
import androidx.test.uiautomator.UiSelector;

import org.hamcrest.Matchers;

import se.leap.bitmaskclient.BuildConfig;
import se.leap.bitmaskclient.R;
import tools.fastlane.screengrab.Screengrab;

public class ProviderSetupUtils {

    public static void runProviderSetup(UiDevice device, boolean takeConfigurationScreenshots, boolean useCircumvention, Context targetContext) {
        try {
            runProviderSelection(takeConfigurationScreenshots);
            runCircumventionSelection(takeConfigurationScreenshots, useCircumvention, true, targetContext);
            boolean showPermissionDialog = runVPNPermissionApproval(device, takeConfigurationScreenshots, useCircumvention);
            runConfiguration(takeConfigurationScreenshots);
            runStartVPN(takeConfigurationScreenshots, useCircumvention, showPermissionDialog);
        } catch (NoMatchingViewException e) {
            // it might be that the provider was already configured, so we print the stack
            // trace here and try to continue
            e.printStackTrace();
        } catch (UiObjectNotFoundException | NullPointerException e) {
            e.printStackTrace();
        }
    }

    public static void runStartVPN(boolean takeConfigurationScreenshots, boolean useCircumvention, boolean showPermissionDialog) {
        // ------- START VPN --------------
        System.out.println("next: perform click on VPN button");
        ViewInteraction interaction = tryResolve(onView(withTagValue(Matchers.is("button_setup_circle_custom"))), matches(isDisplayed()), useCircumvention && !showPermissionDialog ? 180 : 20);
        if (takeConfigurationScreenshots) {
            Screengrab.screenshot("all_set_start_vpn");
        } else {
            // we only want to start the VPN in case we're not running the ProviderSetupTest
            interaction.perform(click());
        }
    }

    public static boolean runVPNPermissionApproval(UiDevice device, boolean takeConfigurationScreenshots, boolean useCircumvention) throws UiObjectNotFoundException {
        // ------- VPN PERMISSON DIALOG --------------
        if (VpnService.prepare(getApplicationContext()) != null) {
            tryResolve(onView(withId(R.id.tv_title)), matches(withText(R.string.title_upcoming_connection_request)));
            Screengrab.screenshot("permissions_screen");
            onView(withId(R.id.setup_next_button)).perform(click());

            UiObject okButton = device.findObject(new UiSelector().packageName("com.android.vpndialogs").resourceId("android:id/button1"));
            okButton.waitForExists(30000);
            okButton.click();
            device.waitForWindowUpdate("com.android.vpndialogs", 1000);
            return true;
        }
        return false;
    }

    public static void runConfiguration(boolean takeConfigurationScreenshots) {
        // ------- CONFIGURATION PROGRESS --------------
        System.out.println("next: configuring");
        tryResolve(
                onView(
                        Matchers.allOf(
                                withText(R.string.configuring_provider),
                                withId(R.id.tv_title)
                        )
                ),
                matches(isDisplayed())
        );
        if (takeConfigurationScreenshots) Screengrab.screenshot("configuring_provider");
    }

    public static void runCircumventionSelection(boolean takeConfigurationScreenshots, boolean useCircumvention, boolean clickNext, Context targetContext) {
        // ------- CIRCUMVENTION SELECTION --------------
        if (useCircumvention) {
            onView(withText(targetContext.getString(R.string.use_circumvention_tech))).perform(click());
        } else {
            onView(withText(targetContext.getString(R.string.use_standard_vpn, targetContext.getString(R.string.app_name)))).perform(click());
        }
        if (takeConfigurationScreenshots) Screengrab.screenshot("041_circumvention_selection");
        if (clickNext) onView(withText(R.string.next)).perform(click());
    }


    public static void runProviderSelection(boolean takeConfigurationScreenshots) {
        // ------- PROVIDER SELECTION --------------
        if ("normal".equals(BuildConfig.FLAVOR_branding)) {
            System.out.println("next: provider selection");
            ViewInteraction radioButtonSelection = tryResolve(onView(withText("CoopVPN Beta")), matches(isDisplayed()));
            radioButtonSelection.perform(click());
            if (takeConfigurationScreenshots) Screengrab.screenshot("040_provider_selection");
            // next button click
            onView(withText(R.string.next)).perform(click());
        }
    }

    public static boolean isVerboseScreenshots() {
        Bundle arguments = InstrumentationRegistry.getArguments();
        String verbose = arguments.getString("verbose_screenshots", "false");
        return "true".equalsIgnoreCase(verbose);
    }
}