"""
Sistema de temas e personalizacao da UI.

Suporta:
- Dark mode
- Custom CSS
- Keyboard shortcuts
"""

import gradio as gr


# CSS Customizado

LIGHT_MODE_CSS = """
/* Light Mode */
:root {
    --primary-color: #1f77b4;
    --secondary-color: #ff7f0e;
    --background-color: #ffffff;
    --surface-color: #f5f5f5;
    --text-color: #333333;
    --border-color: #e0e0e0;
}

.gradio-container {
    background-color: var(--background-color);
    color: var(--text-color);
}

.tab-nav {
    background-color: var(--surface-color);
    border-bottom: 2px solid var(--primary-color);
}

.primary-btn {
    background-color: var(--primary-color) !important;
    color: white !important;
    border: none !important;
}

.secondary-btn {
    background-color: var(--secondary-color) !important;
    color: white !important;
    border: none !important;
}

.code-block {
    background-color: #f8f8f8;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 10px;
    font-family: monospace;
}
"""

DARK_MODE_CSS = """
/* Dark Mode */
:root {
    --primary-color: #4a9eff;
    --secondary-color: #ffa94d;
    --background-color: #1a1a1a;
    --surface-color: #2d2d2d;
    --text-color: #e0e0e0;
    --border-color: #404040;
}

body {
    background-color: var(--background-color) !important;
    color: var(--text-color) !important;
}

.gradio-container {
    background-color: var(--background-color) !important;
    color: var(--text-color) !important;
}

.tab-nav {
    background-color: var(--surface-color) !important;
    border-bottom: 2px solid var(--primary-color) !important;
}

.tab-nav button {
    color: var(--text-color) !important;
}

.tab-nav button.selected {
    background-color: var(--primary-color) !important;
    color: white !important;
}

input, textarea, select {
    background-color: var(--surface-color) !important;
    color: var(--text-color) !important;
    border: 1px solid var(--border-color) !important;
}

.markdown-text {
    color: var(--text-color) !important;
}

.primary-btn {
    background-color: var(--primary-color) !important;
    color: white !important;
    border: none !important;
}

.secondary-btn {
    background-color: var(--secondary-color) !important;
    color: #1a1a1a !important;
    border: none !important;
}

.code-block {
    background-color: #1e1e1e !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 4px;
    padding: 10px;
    font-family: monospace;
    color: #d4d4d4 !important;
}

.warning {
    background-color: #332200 !important;
    border-left: 4px solid var(--secondary-color) !important;
    padding: 10px;
    margin: 10px 0;
}

.info {
    background-color: #002233 !important;
    border-left: 4px solid var(--primary-color) !important;
    padding: 10px;
    margin: 10px 0;
}

/* Scrollbars dark mode */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--surface-color);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}
"""

# JavaScript para keyboard shortcuts

KEYBOARD_SHORTCUTS_JS = """
function setupKeyboardShortcuts() {
    document.addEventListener('keydown', function(e) {
        // Ctrl/Cmd + K - Focus search
        if ((e.ctrlKey || e.metaKey) && e.key === 'k') {
            e.preventDefault();
            const searchInput = document.querySelector('input[placeholder*="query"], input[placeholder*="pergunta"]');
            if (searchInput) {
                searchInput.focus();
            }
        }

        // Ctrl/Cmd + Enter - Submit form
        if ((e.ctrlKey || e.metaKey) && e.key === 'Enter') {
            const submitBtn = document.querySelector('button.primary-btn');
            if (submitBtn) {
                submitBtn.click();
            }
        }

        // Ctrl/Cmd + / - Show shortcuts help
        if ((e.ctrlKey || e.metaKey) && e.key === '/') {
            e.preventDefault();
            alert(
                'Atalhos de Teclado:\\n\\n' +
                'Ctrl/Cmd + K - Focar na busca\\n' +
                'Ctrl/Cmd + Enter - Enviar formulario\\n' +
                'Ctrl/Cmd + D - Alternar dark mode\\n' +
                'Ctrl/Cmd + / - Mostrar ajuda de atalhos\\n' +
                'Esc - Limpar entrada'
            );
        }

        // Ctrl/Cmd + D - Toggle dark mode
        if ((e.ctrlKey || e.metaKey) && e.key === 'd') {
            e.preventDefault();
            const darkModeToggle = document.querySelector('#dark-mode-toggle');
            if (darkModeToggle) {
                darkModeToggle.click();
            }
        }

        // Esc - Clear input
        if (e.key === 'Escape') {
            const activeElement = document.activeElement;
            if (activeElement.tagName === 'INPUT' || activeElement.tagName === 'TEXTAREA') {
                activeElement.value = '';
            }
        }
    });
}

// Run on load
if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', setupKeyboardShortcuts);
} else {
    setupKeyboardShortcuts();
}
"""


def get_theme(dark_mode: bool = False) -> str:
    """
    Retorna CSS do tema.

    Args:
        dark_mode: Se True, retorna dark mode

    Returns:
        String CSS
    """
    base_css = DARK_MODE_CSS if dark_mode else LIGHT_MODE_CSS
    return base_css + "\n" + KEYBOARD_SHORTCUTS_JS


def create_theme_toggle() -> tuple:
    """
    Cria toggle de dark mode.

    Returns:
        Tuple (checkbox, css_component)
    """
    dark_mode_toggle = gr.Checkbox(
        label="Dark Mode",
        value=False,
        elem_id="dark-mode-toggle"
    )

    return dark_mode_toggle


def apply_theme(dark_mode: bool) -> str:
    """
    Aplica tema baseado no dark_mode.

    Args:
        dark_mode: Se True, aplica dark mode

    Returns:
        CSS string
    """
    return get_theme(dark_mode=dark_mode)


# Funcoes de exportacao

def create_export_buttons() -> tuple:
    """
    Cria botoes de exportacao.

    Returns:
        Tuple de botoes (json, csv, md, pdf)
    """
    with gr.Row():
        export_json_btn = gr.Button("Exportar JSON", size="sm")
        export_csv_btn = gr.Button("Exportar CSV", size="sm")
        export_md_btn = gr.Button("Exportar Markdown", size="sm")
        export_pdf_btn = gr.Button("Exportar PDF", size="sm")

    return export_json_btn, export_csv_btn, export_md_btn, export_pdf_btn


def create_keyboard_shortcuts_help() -> gr.Markdown:
    """
    Cria componente de ajuda de atalhos.

    Returns:
        Componente Markdown
    """
    shortcuts_text = """
    ### Atalhos de Teclado

    | Atalho | Acao |
    |--------|------|
    | `Ctrl/Cmd + K` | Focar na busca |
    | `Ctrl/Cmd + Enter` | Enviar formulario |
    | `Ctrl/Cmd + D` | Alternar dark mode |
    | `Ctrl/Cmd + /` | Mostrar ajuda |
    | `Esc` | Limpar entrada |
    """

    return gr.Markdown(shortcuts_text, visible=False, elem_id="shortcuts-help")