/*
 *  Created by Phil on 5/11/2010.
 *  Copyright 2010 Two Blue Cubes Ltd. All rights reserved.
 *
 *  Distributed under the Boost Software License, Version 1.0. (See accompanying
 *  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 */
#ifndef TWOBLUECUBES_CATCH_LIST_HPP_INCLUDED
#define TWOBLUECUBES_CATCH_LIST_HPP_INCLUDED

#include "catch_commandline.hpp"
#include "catch_text.h"
#include "catch_console_colour.hpp"

#include <limits>
#include <algorithm>

namespace Catch {
    inline bool matchesFilters( std::vector<TestCaseFilters> const& filters, TestCase const& testCase ) {
        std::vector<TestCaseFilters>::const_iterator it = filters.begin();
        std::vector<TestCaseFilters>::const_iterator itEnd = filters.end();
        for(; it != itEnd; ++it )
            if( !it->shouldInclude( testCase ) )
                return false;
        return true;
    }

    inline std::size_t listTests( Config const& config ) {
        if( config.filters().empty() )
            std::cout << "All available test cases:\n";
        else
            std::cout << "Matching test cases:\n";

        std::size_t matchedTests = 0;
        TextAttributes nameAttr, tagsAttr;
        nameAttr.setInitialIndent( 2 ).setIndent( 4 );
        tagsAttr.setIndent( 6 );

        std::vector<TestCase> const& allTests = getRegistryHub().getTestCaseRegistry().getAllTests();
        for( std::vector<TestCase>::const_iterator it = allTests.begin(), itEnd = allTests.end();
                it != itEnd;
                ++it )
            if( matchesFilters( config.filters(), *it ) ) {
                matchedTests++;
                TestCaseInfo const& testCaseInfo = it->getTestCaseInfo();
                Colour::Code colour = testCaseInfo.isHidden
                    ? Colour::SecondaryText
                    : Colour::None;
                Colour colourGuard( colour );

                std::cout << Text( testCaseInfo.name, nameAttr ) << std::endl;
                if( !testCaseInfo.tags.empty() )
                    std::cout << Text( testCaseInfo.tagsAsString, tagsAttr ) << std::endl;
            }

        if( config.filters().empty() )
            std::cout << pluralise( matchedTests, "test case" ) << "\n" << std::endl;
        else
            std::cout << pluralise( matchedTests, "matching test case" ) << "\n" << std::endl;
        return matchedTests;
    }

    inline std::size_t listTags( Config const& config ) {
        if( config.filters().empty() )
            std::cout << "All available tags:\n";
        else
            std::cout << "Matching tags:\n";

        std::map<std::string, int> tagCounts;

        std::vector<TestCase> const& allTests = getRegistryHub().getTestCaseRegistry().getAllTests();
        for( std::vector<TestCase>::const_iterator  it = allTests.begin(),
                                                    itEnd = allTests.end();
                it != itEnd;
                ++it ) {
            if( matchesFilters( config.filters(), *it ) ) {
                for( std::set<std::string>::const_iterator  tagIt = it->getTestCaseInfo().tags.begin(),
                                                            tagItEnd = it->getTestCaseInfo().tags.end();
                        tagIt != tagItEnd;
                        ++tagIt ) {
                    std::string tagName = *tagIt;
                    std::map<std::string, int>::iterator countIt = tagCounts.find( tagName );
                    if( countIt == tagCounts.end() )
                        tagCounts.insert( std::make_pair( tagName, 1 ) );
                    else
                        countIt->second++;
                }
            }
        }

        for( std::map<std::string, int>::const_iterator countIt = tagCounts.begin(),
                                                        countItEnd = tagCounts.end();
                countIt != countItEnd;
                ++countIt ) {
            std::ostringstream oss;
            oss << "  " << countIt->second << "  ";
            Text wrapper( "[" + countIt->first + "]", TextAttributes()
                                                        .setInitialIndent( 0 )
                                                        .setIndent( oss.str().size() )
                                                        .setWidth( CATCH_CONFIG_CONSOLE_WIDTH-10 ) );
            std::cout << oss.str() << wrapper << "\n";
        }
        std::cout << pluralise( tagCounts.size(), "tag" ) << "\n" << std::endl;
        return tagCounts.size();
    }

    inline std::size_t listReporters( Config const& /*config*/ ) {
        std::cout << "Available reports:\n";
        IReporterRegistry::FactoryMap const& factories = getRegistryHub().getReporterRegistry().getFactories();
        IReporterRegistry::FactoryMap::const_iterator itBegin = factories.begin(), itEnd = factories.end(), it;
        std::size_t maxNameLen = 0;
        for(it = itBegin; it != itEnd; ++it )
            maxNameLen = (std::max)( maxNameLen, it->first.size() );

        for(it = itBegin; it != itEnd; ++it ) {
            Text wrapper( it->second->getDescription(), TextAttributes()
                                                        .setInitialIndent( 0 )
                                                        .setIndent( 7+maxNameLen )
                                                        .setWidth( CATCH_CONFIG_CONSOLE_WIDTH - maxNameLen-8 ) );
            std::cout << "  "
                    << it->first
                    << ":"
                    << std::string( maxNameLen - it->first.size() + 2, ' ' )
                    << wrapper << "\n";
        }
        std::cout << std::endl;
        return factories.size();
    }

    inline Option<std::size_t> list( Config const& config ) {
        Option<std::size_t> listedCount;
        if( config.listTests() )
            listedCount = listedCount.valueOr(0) + listTests( config );
        if( config.listTags() )
            listedCount = listedCount.valueOr(0) + listTags( config );
        if( config.listReporters() )
            listedCount = listedCount.valueOr(0) + listReporters( config );
        return listedCount;
    }

} // end namespace Catch

#endif // TWOBLUECUBES_CATCH_LIST_HPP_INCLUDED