package com.bugsnag.android;

import com.bugsnag.android.internal.ImmutableConfig;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;

import java.io.File;
import java.util.Calendar;
import java.util.Comparator;
import java.util.Date;
import java.util.UUID;

/**
 * Store and flush Sessions which couldn't be sent immediately due to
 * lack of network connectivity.
 */
class SessionStore extends FileStore {

    static final Comparator<File> SESSION_COMPARATOR = new Comparator<File>() {
        @Override
        public int compare(File lhs, File rhs) {
            if (lhs == null && rhs == null) {
                return 0;
            }
            if (lhs == null) {
                return 1;
            }
            if (rhs == null) {
                return -1;
            }
            String lhsName = lhs.getName();
            String rhsName = rhs.getName();
            return lhsName.compareTo(rhsName);
        }
    };

    SessionStore(@NonNull ImmutableConfig config,
                 @NonNull Logger logger,
                 @Nullable Delegate delegate) {
        super(new File(config.getPersistenceDirectory().getValue(), "bugsnag-sessions"),
                config.getMaxPersistedSessions(),
                SESSION_COMPARATOR,
                logger,
                delegate);
    }

    @NonNull
    @Override
    String getFilename(Object object) {
        return SessionFilenameInfo.defaultFilename();
    }

    public boolean isTooOld(File file) {
        Calendar cal = Calendar.getInstance();
        cal.add(Calendar.DATE, -60);
        return SessionFilenameInfo.findTimestampInFilename(file) < cal.getTimeInMillis();
    }

    public Date getCreationDate(File file) {
        return new Date(SessionFilenameInfo.findTimestampInFilename(file));
    }
}