/*
 * Copyright 2020 New Vector Ltd
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package im.vector.riotx.features.crypto.verification

import im.vector.matrix.android.api.session.crypto.verification.VerificationMethod
import im.vector.riotx.core.hardware.HardwareInfo
import timber.log.Timber
import javax.inject.Inject

class SupportedVerificationMethodsProvider @Inject constructor(
        private val hardwareInfo: HardwareInfo
) {
    /**
     * Provide the list of supported method by RiotX, with or without the QR_CODE_SCAN, depending if a back camera
     * is available
     */
    fun provide(): List<VerificationMethod> {
        return mutableListOf(
                // RiotX supports SAS verification
                VerificationMethod.SAS,
                // RiotX is able to show QR codes
                VerificationMethod.QR_CODE_SHOW)
                .apply {
                    if (hardwareInfo.hasBackCamera()) {
                        // RiotX is able to scan QR codes, and a Camera is available
                        add(VerificationMethod.QR_CODE_SCAN)
                    } else {
                        // This quite uncommon
                        Timber.w("No back Camera detected")
                    }
                }
    }
}
