####################################################################################################################################
# LogTest.pm - Capture the output of commands to compare them with an expected version
####################################################################################################################################
package BackRestTest::Common::LogTest;

####################################################################################################################################
# Perl includes
####################################################################################################################################
use strict;
use warnings FATAL => qw(all);
use Carp qw(confess);

use Cwd qw(abs_path);
use Exporter qw(import);
    our @EXPORT = qw();
use File::Basename qw(dirname);

use lib dirname($0) . '/../lib';
use BackRest::Common::Ini;
use BackRest::Common::Log;
use BackRest::Config::Config;

use BackRestTest::Common::ExecuteTest;

####################################################################################################################################
# Operation constants
####################################################################################################################################
use constant OP_LOG_TEST                                            => 'LogTest';

use constant OP_LOG_TEST_LOG_ADD                                    => OP_LOG_TEST . "->logAdd";
use constant OP_LOG_TEST_LOG_WRITE                                  => OP_LOG_TEST . "->logWrite";
use constant OP_LOG_TEST_NEW                                        => OP_LOG_TEST . "->new";

####################################################################################################################################
# new
####################################################################################################################################
sub new
{
    my $class = shift;          # Class name

    # Create the class hash
    my $self = {};
    bless $self, $class;

    # Assign function parameters, defaults, and log debug info
    (
        my $strOperation,
        $self->{strModule},
        $self->{strTest},
        $self->{iRun},
        $self->{bForce},
        $self->{strComment},
        $self->{strCommandMain},
        $self->{strCommandRemote},
        $self->{strPgSqlBin},
        $self->{strTestPath},
        $self->{strRepoPath}
    ) =
        logDebugParam
        (
            OP_LOG_TEST_NEW, \@_,
            {name => 'strModule', trace => true},
            {name => 'strTest', trace => true},
            {name => 'iRun', trace => true},
            {name => 'bForce', trace => true},
            {name => 'strComment', trace => true},
            {name => 'strCommandMain', trace => true},
            {name => 'strCommandRemote', trace => true},
            {name => 'strPgSqlBin', trace => true},
            {name => 'strTestPath', trace => true},
            {name => 'strRepoPath', trace => true}
        );

    # Initialize the test log
    $self->{strLog} = 'run ' . sprintf('%03d', $self->{iRun}) . ' - ' . $self->{strComment};
    $self->{strLog} .= "\n" . ('=' x length($self->{strLog})) . "\n";

    # Initialize the replacement hash
    $self->{oReplaceHash} = {};

    # Return from function and log return values if any
    return logDebugReturn
    (
        $strOperation,
        {name => 'self', value => $self, trace => true}
    );
}

####################################################################################################################################
# logAdd
####################################################################################################################################
sub logAdd
{
    my $self = shift;

    # Assign function parameters, defaults, and log debug info
    my
    (
        $strOperation,
        $strCommand,
        $strComment,
        $strLog
    ) =
        logDebugParam
        (
            OP_LOG_TEST_LOG_ADD, \@_,
            {name => 'strCommand', trace => true},
            {name => 'strComment', required => false, trace => true},
            {name => 'strLog', required => false, trace => true}
        );

    $self->{strLog} .= "\n";

    if (defined($strComment))
    {
        $self->{strLog} .= $self->regExpReplaceAll($strComment) . "\n";
    }

    $self->{strLog} .= '> ' . $self->regExpReplaceAll($strCommand) . "\n" . ('-' x '132') . "\n";

    # Make sure there is a log before trying to output it
    if (defined($strLog))
    {
        # Do replacements on each line of the log
        foreach my $strLine (split("\n", $strLog))
        {
            $strLine =~ s/^[0-9]{4}-[0-1][0-9]-[0-3][0-9] [0-2][0-9]:[0-6][0-9]:[0-6][0-9]\.[0-9]{3} T[0-9]{2} //;

            if ($strLine !~ /^  TEST/)
            {
                $strLine =~ s/^                            //;
                $strLine =~ s/^ //;
                $strLine =~ s/\r$//;

                $strLine = $self->regExpReplaceAll($strLine);

                $self->{strLog} .= "${strLine}\n";
            }
        }
    }

    # Return from function and log return values if any
    logDebugReturn($strOperation);
}

####################################################################################################################################
# supplementalAdd
####################################################################################################################################
sub supplementalAdd
{
    my $self = shift;
    my $strFileName = shift;
    my $bRemote = shift;
    my $strComment = shift;

    if ($bRemote)
    {
        executeTest("chmod g+x " . $self->{strRepoPath},
                    {bRemote => true});
    }

    open(my $hFile, '<', $strFileName)
        or confess &log(ERROR, "unable to open ${strFileName} for appending to test log");

    my $strHeader .= "+ supplemental file: " . $self->regExpReplaceAll($strFileName);

    if (defined($strComment))
    {
        $self->{strLog} .= "\n" . $self->regExpReplaceAll($strComment) . "\n" . ('=' x '132') . "\n";
    }

    $self->{strLog} .= "\n${strHeader}\n" . ('-' x length($strHeader)) . "\n";

    while (my $strLine = readline($hFile))
    {
        $self->{strLog} .= $self->regExpReplaceAll($strLine);
    }

    close($hFile);

    if ($bRemote)
    {
        executeTest("chmod g-x " . $self->{strRepoPath},
                    {bRemote => true});

    }
}

####################################################################################################################################
# logWrite
####################################################################################################################################
sub logWrite
{
    my $self = shift;

    # Assign function parameters, defaults, and log debug info
    my
    (
        $strOperation,
        $strBasePath,
        $strTestPath,
        $strFileName
    ) =
        logDebugParam
        (
            OP_LOG_TEST_LOG_WRITE, \@_,
            {name => 'strBasePath', trace => true},
            {name => 'strTestPath', trace => true},
            {name => 'strFileName',
             default => sprintf("log/$self->{strModule}-$self->{strTest}-%03d.log", $self->{iRun}), trace => true}
        );

    my $strReferenceLogFile = "${strBasePath}/test/${strFileName}";
    my $strTestLogFile;

    if ($self->{bForce})
    {
        $strTestLogFile = $strReferenceLogFile;
    }
    else
    {
        my $strTestLogPath = "${strTestPath}/log";

        if (!-e $strTestLogPath)
        {
            mkdir($strTestLogPath) or
                confess "unable to create test log path ${strTestLogPath}";
        }

        $strTestLogFile = "${strTestPath}/${strFileName}";
    }

    open(my $hFile, '>', $strTestLogFile)
        or confess "could not open test log file '${strTestLogFile}': $!";

    syswrite($hFile, $self->{strLog})
        or confess "could not write to test log file '${strTestLogFile}': $!";

    close($hFile);

    if (!$self->{bForce})
    {
        executeTest("diff ${strReferenceLogFile} ${strTestLogFile}");
    }

    # Return from function and log return values if any
    logDebugReturn($strOperation);
}

####################################################################################################################################
# regExpReplace
####################################################################################################################################
sub regExpReplace
{
    my $self = shift;
    my $strLine = shift;
    my $strType = shift;
    my $strExpression = shift;
    my $strToken = shift;
    my $bIndex = shift;

    my @stryReplace = ($strLine =~ /$strExpression/g);

    foreach my $strReplace (@stryReplace)
    {
        my $iIndex;
        my $strTypeReplacement;
        my $strReplacement;

        if (!defined($bIndex) || $bIndex)
        {
            if (defined($strToken))
            {
                my @stryReplacement = ($strReplace =~ /$strToken/g);

                if (@stryReplacement != 1)
                {
                    confess &log(ASSERT, "'${strToken}' is not a sub-regexp of '${strExpression}' or" .
                                         " matches multiple times on '${strReplace}'");
                }

                $strReplacement = $stryReplacement[0];
            }
            else
            {
                $strReplacement = $strReplace;
            }

            if (defined(${$self->{oReplaceHash}}{$strType}{$strReplacement}))
            {
                $iIndex = ${$self->{oReplaceHash}}{$strType}{$strReplacement}{index};
            }
            else
            {
                if (!defined(${$self->{oReplaceHash}}{$strType}{index}))
                {
                    ${$self->{oReplaceHash}}{$strType}{index} = 1;
                }

                $iIndex = ${$self->{oReplaceHash}}{$strType}{index}++;
                ${$self->{oReplaceHash}}{$strType}{$strReplacement}{index} = $iIndex;
            }
        }

        $strTypeReplacement = "[${strType}" . (defined($iIndex) ? "-${iIndex}" : '') . ']';

        if (defined($strToken))
        {
            $strReplacement = $strReplace;
            $strReplacement =~ s/$strToken/$strTypeReplacement/;
        }
        else
        {
            $strReplacement = $strTypeReplacement;
        }

        $strLine =~ s/$strReplace/$strReplacement/g;
    }

    return $strLine;
}

####################################################################################################################################
# regExpReplaceAll
####################################################################################################################################
sub regExpReplaceAll
{
    my $self = shift;
    my $strLine = shift;

    my $strBinPath = dirname(dirname(abs_path($0))) . '/bin';

    $strLine =~ s/$self->{strCommandMain}/[BACKREST_BIN]/g;
    $strLine =~ s/$self->{strCommandRemote}/[BACKREST_BIN]/g;
    $strLine =~ s/$self->{strPgSqlBin}/[PGSQL_BIN_PATH]/g;
    $strLine =~ s/$self->{strTestPath}/[TEST_PATH]/g;

    $strLine = $self->regExpReplace($strLine, 'BACKREST_NAME_VERSION', '^' . BACKREST_NAME . ' ' . BACKREST_VERSION,
                                                undef, false);

    $strLine = $self->regExpReplace($strLine, 'PROCESS-ID', 'process [0-9]+', '[0-9]+$', false);
    $strLine = $self->regExpReplace($strLine, 'MODIFICATION-TIME', 'lModificationTime = [0-9]+', '[0-9]+$');
    $strLine = $self->regExpReplace($strLine, 'TIMESTAMP', 'timestamp"[ ]{0,1}:[ ]{0,1}[0-9]+','[0-9]+$');

    $strLine = $self->regExpReplace($strLine, 'BACKUP-INCR', '[0-9]{8}\-[0-9]{6}F\_[0-9]{8}\-[0-9]{6}I');
    $strLine = $self->regExpReplace($strLine, 'BACKUP-DIFF', '[0-9]{8}\-[0-9]{6}F\_[0-9]{8}\-[0-9]{6}D');
    $strLine = $self->regExpReplace($strLine, 'BACKUP-FULL', '[0-9]{8}\-[0-9]{6}F');

    $strLine = $self->regExpReplace($strLine, 'GROUP', 'strGroup = [^ \n,\[\]]+', '[^ \n,\[\]]+$');
    $strLine = $self->regExpReplace($strLine, 'GROUP', 'group"[ ]{0,1}:[ ]{0,1}"[^"]+', '[^"]+$');
    $strLine = $self->regExpReplace($strLine, 'USER', 'strUser = [^ \n,\[\]]+', '[^ \n,\[\]]+$');
    $strLine = $self->regExpReplace($strLine, 'USER', 'user"[ ]{0,1}:[ ]{0,1}"[^"]+', '[^"]+$');
    $strLine = $self->regExpReplace($strLine, 'USER', '^db-user=.+$', '[^=]+$');

    $strLine = $self->regExpReplace($strLine, 'PORT', 'db-port=[0-9]+', '[0-9]+$');

    my $strTimestampRegExp = "[0-9]{4}-[0-1][0-9]-[0-3][0-9] [0-2][0-9]:[0-6][0-9]:[0-6][0-9]";

    $strLine = $self->regExpReplace($strLine, 'VERSION',
        "version[\"]{0,1}[ ]{0,1}[\:\=)]{1}[ ]{0,1}[\"]{0,1}" . BACKREST_VERSION, BACKREST_VERSION . '$');
    $strLine = $self->regExpReplace($strLine, 'TIMESTAMP',
        "timestamp-[a-z-]+[\"]{0,1}[ ]{0,1}[\:\=)]{1}[ ]{0,1}[\"]{0,1}[0-9]+", '[0-9]+$', false);
    $strLine = $self->regExpReplace($strLine, 'TIMESTAMP',
        "start\" : [0-9]{10}", '[0-9]{10}$', false);
    $strLine = $self->regExpReplace($strLine, 'TIMESTAMP',
        "stop\" : [0-9]{10}", '[0-9]{10}$', false);
    $strLine = $self->regExpReplace($strLine, 'SIZE',
        "size\"[ ]{0,1}:[ ]{0,1}[0-9]+", '[0-9]+$', false);
    $strLine = $self->regExpReplace($strLine, 'DELTA',
        "delta\"[ ]{0,1}:[ ]{0,1}[0-9]+", '[0-9]+$', false);
    $strLine = $self->regExpReplace($strLine, 'TIMESTAMP-STR', "est backup timestamp: $strTimestampRegExp",
                                                "${strTimestampRegExp}\$", false);
    $strLine = $self->regExpReplace($strLine, 'CHECKSUM', 'checksum=[\"]{0,1}[0-f]{40}', '[0-f]{40}$', false);

    $strLine = $self->regExpReplace($strLine, 'REMOTE-PROCESS-TERMINATED-MESSAGE',
        'remote process terminated: (ssh.*|no output from terminated process)$',
        '(ssh.*|no output from terminated process)$', false);

    return $strLine;
}

1;