#include "form.nvgt"

// Reusable text/file viewer based on NVGT audio_form.
// Returns edited text in edit mode when user confirms.
string file_viewer(string content, string title = "Text Reader", bool readOnly = true) {
    audio_form f;
    f.create_window(title, false, true);

    int textControl = f.create_input_box((readOnly ? "Document (read only)" : "Document (editable)"), content, "", 0,
                                         readOnly, true, true);

    int okButton = -1;
    int closeButton = -1;
    if (readOnly) {
        closeButton = f.create_button("&Close", true, true);
    } else {
        okButton = f.create_button("&OK", true);
        closeButton = f.create_button("&Cancel", false, true);
    }

    f.focus(textControl);

    while (true) {
        f.monitor();
        wait(5);

        if (!readOnly && okButton != -1 && f.is_pressed(okButton)) {
            return f.get_text(textControl);
        }

        if (closeButton != -1 && f.is_pressed(closeButton)) {
            return "";
        }

        if (key_pressed(KEY_ESCAPE)) {
            return "";
        }
    }

    return "";
}

string file_viewer_lines(string[] lines, string title = "Text Reader", bool readOnly = true) {
    string content = join(lines, "\n");
    return file_viewer(content, title, readOnly);
}

// Opens a file in the viewer. In edit mode, saves on confirm.
// Returns edited text when saved or empty string when canceled/failure.
string file_viewer_file(string filePath, string title = "", bool readOnly = true) {
    file f;
    if (!f.open(filePath, "rb")) {
        screen_reader_speak("Failed to open file: " + filePath, true);
        return "";
    }

    string content = f.read();
    f.close();

    if (title == "") {
        title = filePath;
    }

    string result = file_viewer(content, title, readOnly);

    if (!readOnly && result != "") {
        if (f.open(filePath, "wb")) {
            f.write(result);
            f.close();
            screen_reader_speak("File saved successfully", true);
            return result;
        }

        screen_reader_speak("Failed to save file", true);
    }

    return result;
}