/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

@file:Suppress("TooManyFunctions")

package org.mozilla.fenix.ui.robots

import android.content.Intent
import android.util.Log
import androidx.test.espresso.Espresso.onView
import androidx.test.espresso.assertion.ViewAssertions.matches
import androidx.test.espresso.intent.Intents
import androidx.test.espresso.intent.matcher.IntentMatchers
import androidx.test.espresso.matcher.RootMatchers.isDialog
import androidx.test.espresso.matcher.ViewMatchers.isDisplayed
import androidx.test.espresso.matcher.ViewMatchers.withContentDescription
import androidx.test.espresso.matcher.ViewMatchers.withId
import androidx.test.espresso.matcher.ViewMatchers.withText
import androidx.test.uiautomator.By
import androidx.test.uiautomator.UiSelector
import androidx.test.uiautomator.Until
import org.hamcrest.CoreMatchers
import org.junit.Assert.assertTrue
import org.mozilla.fenix.R
import org.mozilla.fenix.helpers.Constants.PackageName.GOOGLE_APPS_PHOTOS
import org.mozilla.fenix.helpers.TestAssetHelper.waitingTime
import org.mozilla.fenix.helpers.TestAssetHelper.waitingTimeLong
import org.mozilla.fenix.helpers.TestHelper
import org.mozilla.fenix.helpers.TestHelper.assertExternalAppOpens
import org.mozilla.fenix.helpers.TestHelper.mDevice
import org.mozilla.fenix.helpers.TestHelper.packageName
import org.mozilla.fenix.helpers.click
import org.mozilla.fenix.helpers.ext.waitNotNull

/**
 * Implementation of Robot Pattern for download UI handling.
 */

class DownloadRobot {

    fun verifyDownloadPrompt(fileName: String) = assertDownloadPrompt(fileName)

    fun verifyDownloadNotificationPopup() = assertDownloadNotificationPopup()

    fun verifyPhotosAppOpens() = assertExternalAppOpens(GOOGLE_APPS_PHOTOS)

    fun verifyDownloadedFileName(fileName: String) {
        assertTrue(
            "$fileName not found in Downloads list",
            mDevice.findObject(UiSelector().text(fileName))
                .waitForExists(waitingTime),
        )
    }

    fun verifyDownloadedFileIcon() = assertDownloadedFileIcon()

    fun verifyEmptyDownloadsList() {
        mDevice.findObject(UiSelector().resourceId("$packageName:id/download_empty_view"))
            .waitForExists(waitingTime)
        onView(withText("No downloaded files")).check(matches(isDisplayed()))
    }

    fun waitForDownloadsListToExist() =
        assertTrue(
            "Downloads list either empty or not displayed",
            mDevice.findObject(UiSelector().resourceId("$packageName:id/download_list"))
                .waitForExists(waitingTime),
        )

    fun openDownloadedFile(fileName: String) {
        downloadedFile(fileName)
            .check(matches(isDisplayed()))
            .click()
    }

    class Transition {
        fun clickDownload(interact: DownloadRobot.() -> Unit): Transition {
            downloadButton().click()

            DownloadRobot().interact()
            return Transition()
        }

        fun closePrompt(interact: BrowserRobot.() -> Unit): BrowserRobot.Transition {
            closePromptButton().click()

            BrowserRobot().interact()
            return BrowserRobot.Transition()
        }

        fun clickOpen(type: String, interact: BrowserRobot.() -> Unit): BrowserRobot.Transition {
            openDownloadButton().click()

            // verify open intent is matched with associated data type
            Intents.intended(
                CoreMatchers.allOf(
                    IntentMatchers.hasAction(Intent.ACTION_VIEW),
                    IntentMatchers.hasType(type),
                ),
            )

            BrowserRobot().interact()
            return BrowserRobot.Transition()
        }

        fun clickAllowPermission(interact: DownloadRobot.() -> Unit): Transition {
            mDevice.waitNotNull(
                Until.findObject(By.res(TestHelper.getPermissionAllowID() + ":id/permission_allow_button")),
                waitingTime,
            )

            val allowPermissionButton = mDevice.findObject(By.res(TestHelper.getPermissionAllowID() + ":id/permission_allow_button"))
            allowPermissionButton.click()

            DownloadRobot().interact()
            return Transition()
        }

        fun exitDownloadsManagerToBrowser(interact: BrowserRobot.() -> Unit): BrowserRobot.Transition {
            onView(withContentDescription("Navigate up")).click()

            BrowserRobot().interact()
            return BrowserRobot.Transition()
        }

        fun goBack(interact: HomeScreenRobot.() -> Unit): HomeScreenRobot.Transition {
            goBackButton().click()

            HomeScreenRobot().interact()
            return HomeScreenRobot.Transition()
        }
    }
}

fun downloadRobot(interact: DownloadRobot.() -> Unit): DownloadRobot.Transition {
    DownloadRobot().interact()
    return DownloadRobot.Transition()
}

private fun assertDownloadPrompt(fileName: String) {
    var currentTries = 0
    while (currentTries++ < 3) {
        try {
            assertTrue(
                "Download prompt button not visible",
                mDevice.findObject(UiSelector().resourceId("$packageName:id/download_button"))
                    .waitForExists(waitingTimeLong),
            )
            assertTrue(
                "$fileName title doesn't match",
                mDevice.findObject(UiSelector().text(fileName))
                    .waitForExists(waitingTimeLong),
            )

            break
        } catch (e: AssertionError) {
            Log.e("DOWNLOAD_ROBOT", "Failed to find locator: ${e.localizedMessage}")

            browserScreen {
            }.clickDownloadLink(fileName) {
            }
        }
    }
}

private fun assertDownloadNotificationPopup() {
    assertTrue(
        "Download notification Open button not found",
        mDevice.findObject(UiSelector().text("Open"))
            .waitForExists(waitingTime),
    )
    assertTrue(
        "Download completed notification text doesn't match",
        mDevice.findObject(UiSelector().textContains("Download completed"))
            .waitForExists(waitingTime),
    )
    assertTrue(
        "Downloaded file name not visible",
        mDevice.findObject(UiSelector().resourceId("$packageName:id/download_dialog_filename"))
            .waitForExists(waitingTime),
    )
}

private fun closePromptButton() =
    onView(withContentDescription("Close"))

private fun downloadButton() =
    onView(withText("Download"))
        .inRoot(isDialog())
        .check(matches(isDisplayed()))

private fun openDownloadButton() =
    onView(withId(R.id.download_dialog_action_button))
        .check(matches(isDisplayed()))

private fun downloadedFile(fileName: String) = onView(withText(fileName))

private fun assertDownloadedFileIcon() =
    assertTrue(
        "Downloaded file icon not found",
        mDevice.findObject(UiSelector().resourceId("$packageName:id/favicon"))
            .exists(),
    )

private fun goBackButton() = onView(withContentDescription("Navigate up"))