#!/usr/bin/env python
#
# Public Domain 2014-present MongoDB, Inc.
# Public Domain 2008-2014 WiredTiger, Inc.
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import wiredtiger, wttest
import os, shutil
from helper import compare_files
from wtbackup import backup_base
from wtdataset import simple_key
from wtscenario import make_scenarios

# test_backup12.py
# Test cursor backup with a block-based incremental cursor.
class test_backup12(backup_base):
    conn_config='cache_size=1G,log=(enabled,file_max=100K)'
    dir='backup.dir'                    # Backup directory name
    logmax="100K"
    uri="table:test"
    uri2="table:test2"
    uri_rem="table:test_rem"

    pfx = 'test_backup'
    # Set the key and value big enough that we modify a few blocks.
    bigkey = 'Key' * 100
    bigval = 'Value' * 100

    nops = 1000
    def test_backup12(self):

        self.session.create(self.uri, "key_format=S,value_format=S")
        self.session.create(self.uri2, "key_format=S,value_format=S")
        self.session.create(self.uri_rem, "key_format=S,value_format=S")
        self.add_data(self.uri, self.bigkey, self.bigval, True)
        self.add_data(self.uri2, self.bigkey, self.bigval, True)
        self.add_data(self.uri_rem, self.bigkey, self.bigval, True)

        os.mkdir(self.dir)
        #
        # Open up the backup cursor. This causes a new log file to be created.
        # That log file is not part of the list returned. This is a full backup
        # primary cursor with incremental configured.
        # Note: this first backup is actually done before a checkpoint is taken.
        #
        config = 'incremental=(enabled,granularity=1M,this_id="ID1")'
        bkup_c = self.session.open_cursor('backup:', None, config)

        # Add more data while the backup cursor is open.
        self.add_data(self.uri, self.bigkey, self.bigval, True)

        # Now make a full backup.
        all_files = self.take_full_backup(self.dir, bkup_c)

        # Now open a duplicate backup cursor.
        # We *can* use a log target duplicate on an incremental primary backup so that
        # a backup process can get all the log files that occur while that primary cursor
        # is open.
        dup_logs = self.take_log_backup(bkup_c, self.dir, all_files)
        all_files += dup_logs
        bkup_c.close()

        # Add more data.
        self.add_data(self.uri, self.bigkey, self.bigval, True)
        self.add_data(self.uri2, self.bigkey, self.bigval, True)

        # Drop a table.
        self.session.drop(self.uri_rem)

        # Now do an incremental backup with id 2.
        (bkup_files, _) = self.take_incr_backup(self.dir, 2)
        all_files += bkup_files

        # We need to remove files in the backup directory that are not in the current backup.
        all_set = set(all_files)
        bkup_set = set(bkup_files)
        rem_files = list(all_set - bkup_set)
        for l in rem_files:
            self.pr('Remove file: ' + self.dir + '/' + l)
            os.remove(self.dir + '/' + l)
        # After the full backup, open and recover the backup database.
        backup_conn = self.wiredtiger_open(self.dir)
        backup_conn.close()

if __name__ == '__main__':
    wttest.run()