/* 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/. */

package org.mozilla.fenix

import android.app.Activity
import android.content.Intent
import android.os.Bundle
import mozilla.components.support.migration.state.MigrationProgress
import org.mozilla.fenix.ext.components
import org.mozilla.fenix.migration.MigrationProgressActivity

/**
 * The purpose of this activity, when launched, is to decide whether we want to show the migration
 * screen ([MigrationProgressActivity]) or launch the browser normally ([HomeActivity]).
 */
class MigrationDecisionActivity : Activity() {
    private val store by lazy { components.migrationStore }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        val intent = if (intent != null) intent else Intent()

        val activity = when (store.state.progress) {
            MigrationProgress.NONE -> HomeActivity::class.java
            MigrationProgress.MIGRATING, MigrationProgress.COMPLETED -> MigrationProgressActivity::class.java
        }

        intent.setClass(applicationContext, activity)
        intent.putExtra(HomeActivity.OPEN_TO_BROWSER, false)

        startActivity(intent)
        finish()

        // We are disabling animations here when switching activities because this results in a
        // perceived faster launch. This activity will start immediately with a solid background
        // and then we switch to the actual activity without an animation. This visually looks like
        // a faster start than launching this activity invisibly and switching to the actual
        // activity after that.
        overridePendingTransition(0, 0)
    }
}