/*******************************************************************************
 * This file is part of the "Enduro2D"
 * For conditions of distribution and use, see copyright notice in LICENSE.md
 * Copyright (C) 2018 Matvey Cherevko
 ******************************************************************************/

#include "_utils.hpp"
using namespace e2d;

TEST_CASE("path") {
    {
        const vector<str> absolute_paths = {
            "/",
            "/usr",
            "/usr/",
            "/usr/local",

            "C:",
            "C:\\",
            "C:\\windows",
            "C:\\windows\\",
            "C:\\windows\\system32",

            "\\\\.\\COM1",
            "\\\\?\\C:",
            "\\\\?\\UNC",
            "\\\\server",
        };
        const vector<str> relative_paths = {
            "",

            "usr",
            "usr/",
            "usr/local",

            "windows",
            "windows\\",
            "windows\\system32",
        };
        for ( const str& s : absolute_paths ) {
            REQUIRE(path::is_absolute(s));
            REQUIRE_FALSE(path::is_relative(s));
        }
        for ( const str& s : relative_paths ) {
            REQUIRE(path::is_relative(s));
            REQUIRE_FALSE(path::is_absolute(s));
        }
    }
    {
        // [lsh, rhs, result]
        using t = std::tuple<str, str, str>;
        const vector<t> combinations = {
            t{"", "", ""},

            t{".", ".", "./."},
            t{"..", "..", "../.."},

            t{".", "..", "./.."},
            t{"..", ".", "../."},

            t{"file", "", "file"},
            t{"", "file", "file"},

            t{"folder", "file", "folder/file"},
            t{"folder/", "file", "folder/file"},
            t{"folder\\", "file", "folder\\file"},

            t{"folder", "other/file", "folder/other/file"},
            t{"folder/", "other/file", "folder/other/file"},
            t{"folder\\", "other/file", "folder\\other/file"},

            t{"folder", "/file", "/file"},
            t{"folder/", "\\file", "\\file"},
            t{"folder\\", "C:\\file", "C:\\file"},
            t{"folder\\", "C:/file", "C:/file"},
        };
        for ( const auto& combination : combinations ) {
            str lhs, rhs, res;
            std::tie(lhs, rhs, res) = combination;
            REQUIRE(path::combine(lhs, rhs) == res);
        }
    }
    {
        // [path, stem, filename, extension]
        using t = std::tuple<str, str, str, str>;
        const vector<t> combinations = {
            t{"", "", "", ""},

            t{".", ".", ".", ""},
            t{"/.", ".", ".", ""},
            t{"\\.", ".", ".", ""},
            t{"folder.jpg/.", ".", ".", ""},
            t{"folder.jpg\\.", ".", ".", ""},

            t{"..", "..", "..", ""},
            t{"/..", "..", "..", ""},
            t{"\\..", "..", "..", ""},
            t{"folder.jpg/..", "..", "..", ""},
            t{"folder.jpg\\..", "..", "..", ""},

            t{"/", "", "", ""},
            t{"file.jpg/", "", "", ""},

            t{"\\", "", "", ""},
            t{"file.jpg\\", "", "", ""},

            t{"C:", "C:", "C:", ""},
            t{"C:/", "", "", ""},
            t{"C:\\", "", "", ""},

            t{"file", "file", "file", ""},
            t{"file.png", "file", "file.png", ".png"},
            t{"file.jpg.png", "file.jpg", "file.jpg.png", ".png"},

            t{"/file", "file", "file", ""},
            t{"/file.png", "file", "file.png", ".png"},
            t{"/file.jpg.png", "file.jpg", "file.jpg.png", ".png"},

            t{"\\file", "file", "file", ""},
            t{"\\file.png", "file", "file.png", ".png"},
            t{"\\file.jpg.png", "file.jpg", "file.jpg.png", ".png"},

            t{"folder.jpg/file", "file", "file", ""},
            t{"folder.jpg/file.png", "file", "file.png", ".png"},
            t{"folder.jpg/file.jpg.png", "file.jpg", "file.jpg.png", ".png"},

            t{"/folder.jpg/file", "file", "file", ""},
            t{"/folder.jpg/file.png", "file", "file.png", ".png"},
            t{"/folder.jpg/file.jpg.png", "file.jpg", "file.jpg.png", ".png"},

            t{"\\folder.jpg\\file", "file", "file", ""},
            t{"\\folder.jpg\\file.png", "file", "file.png", ".png"},
            t{"\\folder.jpg/file.jpg.png", "file.jpg", "file.jpg.png", ".png"},
        };
        for ( const auto& combination : combinations ) {
            const str path = std::get<0>(combination);
            REQUIRE(path::stem(path) == std::get<1>(combination));
            REQUIRE(path::filename(path) == std::get<2>(combination));
            REQUIRE(path::extension(path) == std::get<3>(combination));
        }
    }
    {
        // [path, remove_filename, remove_extension]
        using t = std::tuple<str, str, str>;
        const vector<t> combinations = {
            t{"", "", ""},
            t{"/", "/", "/"},
            t{"\\", "\\", "\\"},

            t{".", "", "."},
            t{"/.", "/", "/."},
            t{"\\.", "\\", "\\."},

            t{"..", "", ".."},
            t{"/..", "/", "/.."},
            t{"\\..", "\\", "\\.."},

            t{"usr", "", "usr"},
            t{"usr.", "", "usr"},
            t{"usr.png", "", "usr"},
            t{"usr.jpg.png", "", "usr.jpg"},

            t{"/usr", "/", "/usr"},
            t{"/usr.", "/", "/usr"},
            t{"/usr.png", "/", "/usr"},
            t{"/usr.jpg.png", "/", "/usr.jpg"},

            t{"\\usr", "\\", "\\usr"},
            t{"\\usr.", "\\", "\\usr"},
            t{"\\usr.png", "\\", "\\usr"},
            t{"\\usr.jpg.png", "\\", "\\usr.jpg"},

            t{"folder.jpg/usr", "folder.jpg/", "folder.jpg/usr"},
            t{"folder.jpg/usr.", "folder.jpg/", "folder.jpg/usr"},
            t{"folder.jpg/usr.png", "folder.jpg/", "folder.jpg/usr"},
            t{"folder.jpg/usr.jpg.png", "folder.jpg/", "folder.jpg/usr.jpg"},

            t{"/folder.jpg/usr", "/folder.jpg/", "/folder.jpg/usr"},
            t{"/folder.jpg/usr.", "/folder.jpg/", "/folder.jpg/usr"},
            t{"/folder.jpg/usr.png", "/folder.jpg/", "/folder.jpg/usr"},
            t{"/folder.jpg/usr.jpg.png", "/folder.jpg/", "/folder.jpg/usr.jpg"},

            t{"\\folder.jpg/usr", "\\folder.jpg/", "\\folder.jpg/usr"},
            t{"\\folder.jpg/usr.", "\\folder.jpg/", "\\folder.jpg/usr"},
            t{"\\folder.jpg/usr.png", "\\folder.jpg/", "\\folder.jpg/usr"},
            t{"\\folder.jpg/usr.jpg.png", "\\folder.jpg/", "\\folder.jpg/usr.jpg"},
        };
        for ( const auto& combination : combinations ) {
            const str path = std::get<0>(combination);
            REQUIRE(path::remove_filename(path) == std::get<1>(combination));
            REQUIRE(path::remove_extension(path) == std::get<2>(combination));
        }
    }
    {
        // [path, filename, result]
        using t = std::tuple<str, str, str>;
        const vector<t> combinations = {
            t{ "", "", "" },
            t{ "/", "", "/" },
            t{ "\\", "", "\\" },

            t{ "", "file", "file" },
            t{ "/", "file", "/file" },
            t{ "\\", "file", "\\file" },

            t{ ".", "file", "file" },
            t{ "/.", "file", "/file" },
            t{ "\\.", "file", "\\file" },
            t{ ".", "", "" },
            t{ "/.", "", "/" },
            t{ "\\.", "", "\\" },

            t{ "..", "file", "file" },
            t{ "/..", "file", "/file" },
            t{ "\\..", "file", "\\file" },
            t{ "..", "", "" },
            t{ "/..", "", "/" },
            t{ "\\..", "", "\\" },

            t{ "usr", "file", "file" },
            t{ "/usr", "file", "/file" },
            t{ "\\usr", "file", "\\file" },
            t{ "usr", "", "" },
            t{ "/usr", "", "/" },
            t{ "\\usr", "", "\\" },

            t{ "usr/", "file", "usr/file" },
            t{ "/usr/", "file", "/usr/file" },
            t{ "\\usr/", "file", "\\usr/file" },
            t{ "usr/", "", "usr/" },
            t{ "/usr/", "", "/usr/" },
            t{ "\\usr/", "", "\\usr/" },

            t{ "folder/usr", "file", "folder/file" },
            t{ "/folder/usr", "file", "/folder/file" },
            t{ "\\folder/usr", "file", "\\folder/file" },
            t{ "folder/usr", "", "folder/" },
            t{ "/folder/usr", "", "/folder/" },
            t{ "\\folder/usr", "", "\\folder/" },

            t{ "folder/usr/", "file", "folder/usr/file" },
            t{ "/folder/usr/", "file", "/folder/usr/file" },
            t{ "\\folder/usr/", "file", "\\folder/usr/file" },
            t{ "folder/usr/", "", "folder/usr/" },
            t{ "/folder/usr/", "", "/folder/usr/" },
            t{ "\\folder/usr/", "", "\\folder/usr/" },
        };
        for ( const auto& combination : combinations ) {
            str path, name, result;
            std::tie(path, name, result) = combination;
            REQUIRE(path::replace_filename(path, name) == result);
        }
    }
    {
        // [path, extension, result]
        using t = std::tuple<str, str, str>;
        const vector<t> combinations = {
            t{"", "", ""},
            t{"/", "", "/"},
            t{"\\", "", "\\"},
            t{"C:", "", "C:"},
            t{".", "", "."},
            t{"..", "", ".."},

            t{".jpg", "png", ".png"},
            t{".jpg", ".png", ".png"},

            t{".jpg/", "png", ".jpg/.png"},
            t{".jpg/", ".png", ".jpg/.png"},

            t{"file", "png", "file.png"},
            t{"file.", "png", "file.png"},
            t{"file.jpg", "png", "file.png"},

            t{"file/", "png", "file/.png"},
            t{"file./", "png", "file./.png"},
            t{"file.jpg/", "png", "file.jpg/.png"},

            t{"/file", "png", "/file.png"},
            t{"/file.", "png", "/file.png"},
            t{"/file.jpg", "png", "/file.png"},

            t{"/file/", "png", "/file/.png"},
            t{"/file./", "png", "/file./.png"},
            t{"/file.jpg/", "png", "/file.jpg/.png"},

            t{"folder.jpg/file", "png", "folder.jpg/file.png"},
            t{"folder.jpg/file.", "png", "folder.jpg/file.png"},
            t{"folder.jpg/file.jpg", "png", "folder.jpg/file.png"},
        };
        for ( const auto& combination : combinations ) {
            str path, extension, result;
            std::tie(path, extension, result) = combination;
            REQUIRE(path::replace_extension(path, extension) == result);
        }
    }
    {
        // [path, result]
        using t = std::tuple<str, str>;
        const vector<t> combinations = {
            t{"usr/local/", "usr/local"},
            t{"usr///local///", "usr///local"},

            t{"usr/local", "usr"},
            t{"usr///local", "usr"},

            t{"usr/", "usr"},
            t{"usr///", "usr"},

            t{"usr", ""},
            t{"", ""},

            t{"/usr/local/", "/usr/local"},
            t{"/usr/local///", "/usr/local"},

            t{"/usr/local", "/usr"},
            t{"/usr///local", "/usr"},

            t{"/usr/", "/usr"},
            t{"/usr///", "/usr"},

            t{"/usr", ""},
            t{"///usr", ""},

            t{"/", ""},
            t{"//", ""},
            t{"///", ""},

            //
            // incorrect but expected
            //

            t{"C:/windows", "C:"},
            t{"C:/", "C:"},
            t{"C:", ""},

            t{"\\\\.\\COM", "\\\\."},
            t{"\\\\.", ""},

            t{"\\\\?\\UNC", "\\\\?"},
            t{"\\\\?", ""},

            t{"\\\\?\\C:\\", "\\\\?\\C:"},
            t{"\\\\?\\C:", "\\\\?"},
        };
        for ( const auto& combination : combinations ) {
            str path, result;
            std::tie(path, result) = combination;
            REQUIRE(path::parent_path(path) == result);
        }
    }
}