/*
Copyright Contributors to the libdnf project.

This file is part of libdnf: https://github.com/rpm-software-management/libdnf/

Libdnf is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2.1 of the License, or
(at your option) any later version.

Libdnf is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with libdnf.  If not, see <https://www.gnu.org/licenses/>.
*/


#ifndef LIBDNF5_CLI_OUTPUT_ARGUMENT_PARSER_HPP
#define LIBDNF5_CLI_OUTPUT_ARGUMENT_PARSER_HPP


#include "libdnf5-cli/tty.hpp"

#include <libsmartcols/libsmartcols.h>

#include <string>


namespace libdnf5::cli::output {


// Usage requires a different class to Help (which extends Usage by adding a new column)
// because we want usage text to span across both Help's columns.
// This is a workaround for smartcols not being able to merge cells.
class Usage {
public:
    explicit Usage() {
        table = scols_new_table();
        scols_table_enable_noheadings(table, 1);
        if (libdnf5::cli::tty::is_coloring_enabled()) {
            scols_table_enable_colors(table, 1);
        }

        struct libscols_symbols * sb = scols_new_symbols();
        scols_symbols_set_branch(sb, "  ");
        scols_symbols_set_right(sb, "  ");
        scols_symbols_set_vertical(sb, "  ");
        scols_table_set_symbols(table, sb);
        scols_unref_symbols(sb);

        scols_table_set_column_separator(table, "  ");
        scols_table_new_column(table, "arg", 30, SCOLS_FL_TREE | SCOLS_FL_WRAP);
    }

    ~Usage() { scols_unref_table(table); }

    libscols_line * add_header(const std::string & text) {
        struct libscols_line * ln = scols_table_new_line(table, nullptr);
        scols_line_set_data(ln, COL_ARG, text.c_str());
        scols_line_set_color(ln, "bold");
        return ln;
    }

    void add_line(const std::string & text, libscols_line * parent = nullptr) {
        struct libscols_line * ln = scols_table_new_line(table, parent);
        scols_line_set_data(ln, COL_ARG, text.c_str());
    }

    void add_newline() { scols_table_new_line(table, nullptr); }

    void print() { scols_print_table(table); }

    libscols_table * get_table() const noexcept { return table; }

protected:
    static constexpr int COL_ARG = 0;
    struct libscols_table * table;
};


class Help : public Usage {
public:
    explicit Help() {
        // Sets a small relative width. We prefer to reduce the width of the description before reducing the argument.
        scols_table_new_column(table, "desc", .1, SCOLS_FL_WRAP);
    }

    void add_line(const std::string & arg, const std::string & desc, libscols_line * parent = nullptr) {
        struct libscols_line * ln = scols_table_new_line(table, parent);
        scols_line_set_data(ln, COL_ARG, arg.c_str());
        scols_line_set_data(ln, COL_DESC, desc.c_str());
    }

protected:
    static constexpr int COL_DESC = 1;
};


}  // namespace libdnf5::cli::output


#endif  // LIBDNF5_CLI_OUTPUT_ARGUMENT_PARSER_HPP
