import gradio as gr

from src.search.service import SearchService
from src.utils.constants import Constants
from src.utils.logging import get_logger


class UIComponents:
    """
    Class to handle the Gradio UI components for the application.
    """

    def __init__(self):
        """
        Initialize the UI components.
        """
        self.logger = get_logger()
        self.logger.info("Initializing UI components")
        try:
            self.search_service = SearchService()
            self.logger.info("UI components initialized successfully")
        except Exception as e:
            self.logger.error(f"Failed to initialize UI components: {str(e)}")
            raise

    def create_customer_tab(self):
        """
        Create the customer search tab.

        Returns:
            gradio.Tab: The customer search tab.
        """
        with gr.Tab(Constants.UI_CUSTOMER_TAB) as tab:
            gr.Markdown(f"## {Constants.UI_CUSTOMER_DESCRIPTION}")

            with gr.Row():
                text_input = gr.Textbox(
                    label=Constants.UI_TEXT_INPUT_LABEL,
                    placeholder="Ex: Une grille décorative pour mon jardin avec des motifs floraux",
                    lines=3
                )

            with gr.Row():
                image_input = gr.Image(
                    label=Constants.UI_IMAGE_INPUT_LABEL,
                    type="pil"
                )

            with gr.Row():
                search_button = gr.Button(Constants.UI_SEARCH_BUTTON, variant="primary")

            with gr.Row(visible=False) as loading_indicator:
                gr.Markdown(f"### {Constants.UI_LOADING_TEXT}")

            results_container = gr.HTML(visible=False)

            def search(text, image):
                self.logger.info("Customer UI search initiated")
                self.logger.debug(f"Search parameters - Text: '{text}', Image provided: {image is not None}")

                if not text and image is None:
                    self.logger.info("No search parameters provided, returning empty results")
                    return None, gr.update(visible=False), gr.update(visible=False)

                try:
                    self.logger.info("Calling customer search service")
                    results = self.search_service.customer_search(text, image)

                    if not results:
                        self.logger.info("No results found for customer search")
                        return None, gr.update(visible=False), gr.HTML(
                            f"<div class='no-results'>{Constants.UI_NO_RESULTS}</div>", visible=True)

                    # Prepare gallery images
                    self.logger.debug(f"Preparing gallery with {len(results)} images")
                    gallery_images = []
                    for result in results:
                        gallery_images.append((result["thumbnail"], result["title"]))

                    # Prepare HTML for results
                    self.logger.debug("Creating HTML for search results")
                    html = self._create_results_html(results)

                    self.logger.info(f"Customer search completed successfully with {len(results)} results")
                    return gr.HTML(html, visible=True)
                except Exception as e:
                    self.logger.error(f"Error during customer UI search: {str(e)}")
                    # Return a user-friendly error message
                    error_html = f"<div class='no-results'>Une erreur s'est produite lors de la recherche. Veuillez réessayer.</div>"
                    return None, gr.update(visible=False), gr.HTML(error_html, visible=True)

            search_button.click(
                fn=search,
                inputs=[text_input, image_input],
                outputs=[results_container],
                #                js="""
                #                function(text, image) {
                #                    // Disable search button and show loading indicator
                #                    document.querySelector("button[variant='primary']").disabled = true;
                #                    return [text, image];
                #                }
                #                """,
                preprocess=True
            ).then(
                #                js="""
                #                function() {
                #                    // Re-enable search button and hide loading indicator
                #                    document.querySelector("button[variant='primary']").disabled = false;
                #                    return [];
                #                }
                #                """
            )

            # Show/hide loading indicator
            search_button.click(
                fn=lambda: gr.update(visible=True),
                inputs=None,
                outputs=loading_indicator
            ).then(
                fn=lambda: gr.update(visible=False),
                inputs=None,
                outputs=loading_indicator
            )

        return tab

    def create_staff_tab(self):
        """
        Create the staff search tab.

        Returns:
            gradio.Tab: The staff search tab.
        """
        with gr.Tab(Constants.UI_STAFF_TAB) as tab:
            gr.Markdown(f"## {Constants.UI_STAFF_DESCRIPTION}")

            with gr.Row():
                image_input = gr.Image(
                    label=Constants.UI_IMAGE_INPUT_LABEL,
                    type="pil"
                )

            with gr.Row():
                search_button = gr.Button(Constants.UI_SEARCH_BUTTON, variant="primary")

            with gr.Row(visible=False) as loading_indicator:
                gr.Markdown(f"### {Constants.UI_LOADING_TEXT}")

            result_container = gr.HTML(visible=False)

            def search(image):
                self.logger.info("Staff UI search initiated")
                self.logger.debug(f"Search parameters - Image provided: {image is not None}")

                if image is None:
                    self.logger.info("No image provided for staff search, returning empty results")
                    return gr.update(visible=False)

                try:
                    self.logger.info("Calling staff search service")
                    result = self.search_service.staff_search(image)

                    if not result:
                        self.logger.info("No results found for staff search")
                        return gr.HTML(f"<div class='no-results'>{Constants.UI_NO_RESULTS}</div>", visible=True)

                    # Prepare HTML for result
                    self.logger.debug("Creating HTML for search result")
                    html = self._create_results_html([result])

                    self.logger.info("Staff search completed successfully with a match")
                    return gr.HTML(html, visible=True)
                except Exception as e:
                    self.logger.error(f"Error during staff UI search: {str(e)}")
                    # Return a user-friendly error message
                    error_html = f"<div class='no-results'>Une erreur s'est produite lors de la recherche. Veuillez réessayer.</div>"
                    return gr.HTML(error_html, visible=True)

            search_button.click(
                fn=search,
                inputs=[image_input],
                outputs=[result_container],
                # js="""
                # function(image) {
                #     // Disable search button and show loading indicator
                #     document.querySelector("button[variant='primary']").disabled = true;
                #     return [image];
                # }
                # """,
                preprocess=True
            ).then(
                # js="""
                # function() {
                #     // Re-enable search button and hide loading indicator
                #     document.querySelector("button[variant='primary']").disabled = false;
                #     return [];
                # }
                # """
            )

            # Show/hide loading indicator
            search_button.click(
                fn=lambda: gr.update(visible=True),
                inputs=None,
                outputs=loading_indicator
            ).then(
                fn=lambda: gr.update(visible=False),
                inputs=None,
                outputs=loading_indicator
            )

        return tab

    def _create_results_html(self, results):
        """
        Create HTML for displaying search results.

        Args:
            results (list): List of search results.

        Returns:
            str: HTML string for displaying results.
        """
        self.logger.debug(f"Creating HTML for {len(results)} results")
        try:
            html = "<div class='results-container'>"

            for i, result in enumerate(results):
                self.logger.debug(f"Adding result {i + 1}: {result['title']}")
                html += f"""
                <div class='result-card'>
                    <div class='result-image'>
                        <img src='{result["thumbnail"]}' alt='{result["title"]}'>
                    </div>
                    <div class='result-content'>
                        <h3>{result["title"]}</h3>
                        <p>{result["description"]}</p>
                        <p class='price'><strong>{Constants.UI_PRICE_LABEL}</strong> {result["price"]}</p>
                        <a href='{result["product_page_url"]}' target='_blank' class='product-button'>{Constants.UI_PRODUCT_BUTTON}</a>
                    </div>
                </div>
                """

            html += "</div>"
            self.logger.debug("HTML for results created successfully")
        except Exception as e:
            self.logger.error(f"Error creating HTML for results: {str(e)}")
            # Create a simple fallback HTML in case of error
            html = "<div class='results-container'><p>Résultats disponibles mais impossible de les afficher correctement.</p></div>"

        # Add CSS for styling
        html += """
        <style>
            .results-container {
                display: flex;
                flex-wrap: wrap;
                gap: 20px;
                justify-content: center;
            }

            .result-card {
                border: 1px solid #ddd;
                border-radius: 8px;
                overflow: hidden;
                width: 300px;
                box-shadow: 0 2px 5px rgba(0,0,0,0.1);
                transition: transform 0.3s ease;
                background-color: white;
            }

            .result-card:hover {
                transform: translateY(-5px);
                box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            }

            .result-image {
                height: 200px;
                overflow: hidden;
            }

            .result-image img {
                width: 100%;
                height: 100%;
                object-fit: cover;
            }

            .result-content {
                padding: 15px;
            }

            .result-content h3 {
                margin-top: 0;
                color: #333;
            }

            .price {
                font-size: 1.1em;
                color: #e63946;
            }

            .product-button {
                display: inline-block;
                background-color: #457b9d;
                color: white;
                padding: 8px 16px;
                text-decoration: none;
                border-radius: 4px;
                margin-top: 10px;
                transition: background-color 0.3s ease;
            }

            .product-button:hover {
                background-color: #1d3557;
            }

            .no-results {
                text-align: center;
                padding: 20px;
                font-size: 1.2em;
                color: #666;
            }

            /* Responsive design */
            @media (max-width: 768px) {
                .results-container {
                    flex-direction: column;
                    align-items: center;
                }

                .result-card {
                    width: 100%;
                    max-width: 350px;
                }
            }
        </style>
        """

        return html

    def create_interface(self):
        """
        Create the complete Gradio interface.

        Returns:
            gradio.Blocks: The Gradio interface.
        """
        with gr.Blocks(title=Constants.UI_TITLE, theme=gr.themes.Soft()) as interface:
            gr.Markdown(f"# {Constants.UI_TITLE}")

            with gr.Tabs():
                self.create_customer_tab()
                self.create_staff_tab()

            # Add CSS for responsive design
            gr.HTML("""
            <style>
                /* Responsive design */
                @media (max-width: 768px) {
                    .gradio-container {
                        padding: 10px !important;
                    }

                    .gradio-row {
                        flex-direction: column !important;
                    }
                }
            </style>
            """)

        return interface

    def close(self):
        """
        Close connections and resources.
        """
        self.logger.info("Closing UI components resources")
        try:
            self.search_service.close()
            self.logger.info("UI components resources closed successfully")
        except Exception as e:
            self.logger.error(f"Error closing UI components resources: {str(e)}")
            # We don't re-raise the exception here to ensure cleanup continues even if there's an error