/*
 *  Copyright (c) 2000-2022 Inria
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *  this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *  this list of conditions and the following disclaimer in the documentation
 *  and/or other materials provided with the distribution.
 *  * Neither the name of the ALICE Project-Team nor the names of its
 *  contributors may be used to endorse or promote products derived from this
 *  software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *  POSSIBILITY OF SUCH DAMAGE.
 *
 *  Contact: Bruno Levy
 *
 *     https://www.inria.fr/fr/bruno-levy
 *
 *     Inria,
 *     Domaine de Voluceau,
 *     78150 Le Chesnay - Rocquencourt
 *     FRANCE
 *
 */

#include <geogram_gfx/gui/text_editor.h>
#include <geogram_gfx/gui/application.h>
#include <geogram/basic/string.h>
#include <fstream>

namespace GEO {

    TextEditor::TextEditor(bool* visible) : visible_(visible) {
        impl_.SetText("\n");
        impl_.SetCursorPosition(
            ::TextEditor::Coordinates(0,0)
        );
        impl_.SetLanguageDefinition(
            ::TextEditor::LanguageDefinition::Lua()
        );
        impl_.SetPalette(::TextEditor::GetDarkPalette());
        fixed_layout_ = true;
    }

    std::string TextEditor::text() const {
        return impl_.GetText();
    }

    void TextEditor::draw() {
        ImGui::Begin(
            "Text Editor", visible_,
            fixed_layout_ ? (
                ImGuiWindowFlags_NoResize |
                ImGuiWindowFlags_NoMove |
                ImGuiWindowFlags_NoCollapse
            ) : 0
        );

        ImGui::PushFont(ImGui::GetIO().Fonts->Fonts[1]);

        if(Application::instance() != nullptr) {
            if(
                String::string_starts_with(
                    Application::instance()->get_style(),
                    "Light"
                )
            ) {
                impl_.SetPalette(::TextEditor::GetLightPalette());
            } else {
                impl_.SetPalette(::TextEditor::GetDarkPalette());
            }
        }

        impl_.Render("##source");

        ImGui::PopFont();

        ImGui::End();
    }

    void TextEditor::load(const std::string& filename) {
        std::ifstream in(filename.c_str());
        std::string text;
        std::string line;
        while(std::getline(in,line)) {
            text += line;
            text += "\n";
        }
        impl_.SetText(text);
        impl_.SetCursorPosition(
            ::TextEditor::Coordinates(0,0)
        );
    }

    void TextEditor::save(const std::string& filename) {
        std::ofstream out(filename.c_str());
        out << impl_.GetText();
    }

    void TextEditor::clear() {
        impl_.SetText("\n");
        impl_.SetCursorPosition(
            ::TextEditor::Coordinates(0,0)
        );
    }

    void TextEditor::load_data(const char* data) {
        impl_.SetText(data);
        impl_.SetCursorPosition(
            ::TextEditor::Coordinates(0,0)
        );
    }

}
