# Import_Functionality.py
# Functionality to import content into the DB
#
# Imports
from time import sleep
import logging
import re
import shutil
import tempfile
import os
import traceback
import zipfile
#
# External Imports
import gradio as gr
import pypandoc
#
# Local Imports
from App_Function_Libraries.DB.DB_Manager import insert_prompt_to_db, load_preset_prompts, import_obsidian_note_to_db, \
    add_media_to_database
from App_Function_Libraries.Prompt_Handling import import_prompt_from_file, import_prompts_from_zip#
from App_Function_Libraries.Summarization.Summarization_General_Lib import perform_summarization

###################################################################################################################
#
# Functions:

logger = logging.getLogger()


def import_data(file, title, author, keywords, custom_prompt, summary, auto_summarize, api_name, api_key):
    if file is None:
        return "No file uploaded. Please upload a file."

    try:
        logging.debug(f"File object type: {type(file)}")
        logging.debug(f"File object attributes: {dir(file)}")

        if hasattr(file, 'name'):
            file_name = file.name
        else:
            file_name = 'unknown_file'

        # Create a temporary file
        with tempfile.NamedTemporaryFile(mode='w+', delete=False, suffix='.txt', encoding='utf-8') as temp_file:
            if isinstance(file, str):
                # If file is a string, it's likely file content
                temp_file.write(file)
            elif hasattr(file, 'read'):
                # If file has a 'read' method, it's likely a file-like object
                content = file.read()
                if isinstance(content, bytes):
                    content = content.decode('utf-8')
                temp_file.write(content)
            else:
                # If it's neither a string nor a file-like object, try converting it to a string
                temp_file.write(str(file))

            temp_file.seek(0)
            file_content = temp_file.read()

        logging.debug(f"File name: {file_name}")
        logging.debug(f"File content (first 100 chars): {file_content[:100]}")

        # Create info_dict
        info_dict = {
            'title': title or 'Untitled',
            'uploader': author or 'Unknown',
        }

        # FIXME - Add chunking support... I added chapter chunking specifically for this...
        # Create segments (assuming one segment for the entire content)
        segments = [{'Text': file_content}]

        # Process keywords
        keyword_list = [kw.strip() for kw in keywords.split(',') if kw.strip()]

        # Handle summarization
        if auto_summarize and api_name and api_key:
            summary = perform_summarization(api_name, file_content, custom_prompt, api_key)
        elif not summary:
            summary = "No summary provided"

        # Add to database
        add_media_to_database(
            url=file_name,  # Using filename as URL
            info_dict=info_dict,
            segments=segments,
            summary=summary,
            keywords=keyword_list,
            custom_prompt_input=custom_prompt,
            whisper_model="Imported",  # Indicating this was an imported file
            media_type="document"
        )

        # Clean up the temporary file
        os.unlink(temp_file.name)

        return f"File '{file_name}' successfully imported with title '{title}' and author '{author}'."
    except Exception as e:
        logging.error(f"Error importing file: {str(e)}")
        return f"Error importing file: {str(e)}"





def process_obsidian_zip(zip_file):
    with tempfile.TemporaryDirectory() as temp_dir:
        try:
            with zipfile.ZipFile(zip_file, 'r') as zip_ref:
                zip_ref.extractall(temp_dir)

            imported_files, total_files, errors = import_obsidian_vault(temp_dir)

            return imported_files, total_files, errors
        except zipfile.BadZipFile:
            error_msg = "The uploaded file is not a valid zip file."
            logger.error(error_msg)
            return 0, 0, [error_msg]
        except Exception as e:
            error_msg = f"Error processing zip file: {str(e)}\n{traceback.format_exc()}"
            logger.error(error_msg)
            return 0, 0, [error_msg]
        finally:
            shutil.rmtree(temp_dir, ignore_errors=True)



def scan_obsidian_vault(vault_path):
    markdown_files = []
    for root, dirs, files in os.walk(vault_path):
        for file in files:
            if file.endswith('.md'):
                markdown_files.append(os.path.join(root, file))
    return markdown_files


def parse_obsidian_note(file_path):
    with open(file_path, 'r', encoding='utf-8') as file:
        content = file.read()

    frontmatter = {}
    frontmatter_match = re.match(r'^---\s*\n(.*?)\n---\s*\n', content, re.DOTALL)
    if frontmatter_match:
        frontmatter_text = frontmatter_match.group(1)
        import yaml
        frontmatter = yaml.safe_load(frontmatter_text)
        content = content[frontmatter_match.end():]

    tags = re.findall(r'#(\w+)', content)
    links = re.findall(r'\[\[(.*?)\]\]', content)

    return {
        'title': os.path.basename(file_path).replace('.md', ''),
        'content': content,
        'frontmatter': frontmatter,
        'tags': tags,
        'links': links,
        'file_path': file_path  # Add this line
    }

def create_import_single_prompt_tab():
    with gr.TabItem("Import a Prompt"):
        gr.Markdown("# Import a prompt into the database")

        with gr.Row():
            with gr.Column():
                import_file = gr.File(label="Upload file for import", file_types=["txt", "md"])
                title_input = gr.Textbox(label="Title", placeholder="Enter the title of the content")
                author_input = gr.Textbox(label="Author", placeholder="Enter the author's name")
                system_input = gr.Textbox(label="System", placeholder="Enter the system message for the prompt", lines=3)
                user_input = gr.Textbox(label="User", placeholder="Enter the user message for the prompt", lines=3)
                keywords_input = gr.Textbox(label="Keywords", placeholder="Enter keywords separated by commas")
                import_button = gr.Button("Import Prompt")

            with gr.Column():
                import_output = gr.Textbox(label="Import Status")
                save_button = gr.Button("Save to Database")
                save_output = gr.Textbox(label="Save Status")

        def handle_import(file):
            result = import_prompt_from_file(file)
            if isinstance(result, tuple) and len(result) == 5:
                title, author, system, user, keywords = result
                return gr.update(value="File successfully imported. You can now edit the content before saving."), \
                       gr.update(value=title), gr.update(value=author), gr.update(value=system), \
                       gr.update(value=user), gr.update(value=", ".join(keywords))
            else:
                return gr.update(value=result), gr.update(), gr.update(), gr.update(), gr.update(), gr.update()

        import_button.click(
            fn=handle_import,
            inputs=[import_file],
            outputs=[import_output, title_input, author_input, system_input, user_input, keywords_input]
        )

        def save_prompt_to_db(title, author, system, user, keywords):
            keyword_list = [k.strip() for k in keywords.split(',') if k.strip()]
            return insert_prompt_to_db(title, author, system, user, keyword_list)

        save_button.click(
            fn=save_prompt_to_db,
            inputs=[title_input, author_input, system_input, user_input, keywords_input],
            outputs=save_output
        )

        def update_prompt_dropdown():
            return gr.update(choices=load_preset_prompts())

        save_button.click(
            fn=update_prompt_dropdown,
            inputs=[],
            outputs=[gr.Dropdown(label="Select Preset Prompt")]
        )

def create_import_item_tab():
    with gr.TabItem("Import Markdown/Text Files"):
        gr.Markdown("# Import a markdown file or text file into the database")
        gr.Markdown("...and have it tagged + summarized")
        with gr.Row():
            with gr.Column():
                import_file = gr.File(label="Upload file for import", file_types=["txt", "md"])
                title_input = gr.Textbox(label="Title", placeholder="Enter the title of the content")
                author_input = gr.Textbox(label="Author", placeholder="Enter the author's name")
                keywords_input = gr.Textbox(label="Keywords", placeholder="Enter keywords, comma-separated")
                custom_prompt_input = gr.Textbox(label="Custom Prompt",
                                             placeholder="Enter a custom prompt for summarization (optional)")
                summary_input = gr.Textbox(label="Summary",
                                       placeholder="Enter a summary or leave blank for auto-summarization", lines=3)
                auto_summarize_checkbox = gr.Checkbox(label="Auto-summarize", value=False)
                api_name_input = gr.Dropdown(
                choices=[None, "Local-LLM", "OpenAI", "Anthropic", "Cohere", "Groq", "DeepSeek", "Mistral", "OpenRouter",
                         "Llama.cpp", "Kobold", "Ooba", "Tabbyapi", "VLLM","ollama", "HuggingFace", "Custom-OpenAI-API"],
                label="API for Auto-summarization"
                )
                api_key_input = gr.Textbox(label="API Key", type="password")
            with gr.Column():
                import_button = gr.Button("Import Data")
                import_output = gr.Textbox(label="Import Status")

        import_button.click(
            fn=import_data,
            inputs=[import_file, title_input, author_input, keywords_input, custom_prompt_input,
                    summary_input, auto_summarize_checkbox, api_name_input, api_key_input],
            outputs=import_output
        )


def create_import_multiple_prompts_tab():
    with gr.TabItem("Import Multiple Prompts"):
        gr.Markdown("# Import multiple prompts into the database")
        gr.Markdown("Upload a zip file containing multiple prompt files (txt or md)")

        with gr.Row():
            with gr.Column():
                zip_file = gr.File(label="Upload zip file for import", file_types=["zip"])
                import_button = gr.Button("Import Prompts")
                prompts_dropdown = gr.Dropdown(label="Select Prompt to Edit", choices=[])
                title_input = gr.Textbox(label="Title", placeholder="Enter the title of the content")
                author_input = gr.Textbox(label="Author", placeholder="Enter the author's name")
                system_input = gr.Textbox(label="System", placeholder="Enter the system message for the prompt",
                                          lines=3)
                user_input = gr.Textbox(label="User", placeholder="Enter the user message for the prompt", lines=3)
                keywords_input = gr.Textbox(label="Keywords", placeholder="Enter keywords separated by commas")

            with gr.Column():
                import_output = gr.Textbox(label="Import Status")
                save_button = gr.Button("Save to Database")
                save_output = gr.Textbox(label="Save Status")
                prompts_display = gr.Textbox(label="Identified Prompts")

        def handle_zip_import(zip_file):
            result = import_prompts_from_zip(zip_file)
            if isinstance(result, list):
                prompt_titles = [prompt['title'] for prompt in result]
                return gr.update(
                    value="Zip file successfully imported. Select a prompt to edit from the dropdown."), prompt_titles, gr.update(
                    value="\n".join(prompt_titles)), result
            else:
                return gr.update(value=result), [], gr.update(value=""), []

        def handle_prompt_selection(selected_title, prompts):
            selected_prompt = next((prompt for prompt in prompts if prompt['title'] == selected_title), None)
            if selected_prompt:
                return (
                    selected_prompt['title'],
                    selected_prompt.get('author', ''),
                    selected_prompt['system'],
                    selected_prompt.get('user', ''),
                    ", ".join(selected_prompt.get('keywords', []))
                )
            else:
                return "", "", "", "", ""

        zip_import_state = gr.State([])

        import_button.click(
            fn=handle_zip_import,
            inputs=[zip_file],
            outputs=[import_output, prompts_dropdown, prompts_display, zip_import_state]
        )

        prompts_dropdown.change(
            fn=handle_prompt_selection,
            inputs=[prompts_dropdown, zip_import_state],
            outputs=[title_input, author_input, system_input, user_input, keywords_input]
        )

        def save_prompt_to_db(title, author, system, user, keywords):
            keyword_list = [k.strip() for k in keywords.split(',') if k.strip()]
            return insert_prompt_to_db(title, author, system, user, keyword_list)

        save_button.click(
            fn=save_prompt_to_db,
            inputs=[title_input, author_input, system_input, user_input, keywords_input],
            outputs=save_output
        )

        def update_prompt_dropdown():
            return gr.update(choices=load_preset_prompts())

        save_button.click(
            fn=update_prompt_dropdown,
            inputs=[],
            outputs=[gr.Dropdown(label="Select Preset Prompt")]
        )


def create_import_obsidian_vault_tab():
    with gr.TabItem("Import Obsidian Vault"):
        gr.Markdown("## Import Obsidian Vault")
        with gr.Row():
            with gr.Column():
                vault_path_input = gr.Textbox(label="Obsidian Vault Path (Local)")
                vault_zip_input = gr.File(label="Upload Obsidian Vault (Zip)")
            with gr.Column():
                import_vault_button = gr.Button("Import Obsidian Vault")
                import_status = gr.Textbox(label="Import Status", interactive=False)


    def import_vault(vault_path, vault_zip):
        if vault_zip:
            imported, total, errors = process_obsidian_zip(vault_zip.name)
        elif vault_path:
            imported, total, errors = import_obsidian_vault(vault_path)
        else:
            return "Please provide either a local vault path or upload a zip file."

        status = f"Imported {imported} out of {total} files.\n"
        if errors:
            status += f"Encountered {len(errors)} errors:\n" + "\n".join(errors)
        return status


    import_vault_button.click(
        fn=import_vault,
        inputs=[vault_path_input, vault_zip_input],
        outputs=[import_status],
        show_progress=True
    )


def import_obsidian_vault(vault_path, progress=gr.Progress()):
    try:
        from App_Function_Libraries.Gradio_UI.Export_Functionality import scan_obsidian_vault
        markdown_files = scan_obsidian_vault(vault_path)
        total_files = len(markdown_files)
        imported_files = 0
        errors = []

        for i, file_path in enumerate(markdown_files):
            try:
                note_data = parse_obsidian_note(file_path)
                success, error_msg = import_obsidian_note_to_db(note_data)
                if success:
                    imported_files += 1
                else:
                    errors.append(error_msg)
            except Exception as e:
                error_msg = f"Error processing {file_path}: {str(e)}"
                logger.error(error_msg)
                errors.append(error_msg)

            progress((i + 1) / total_files, f"Imported {imported_files} of {total_files} files")
            sleep(0.1)  # Small delay to prevent UI freezing

        return imported_files, total_files, errors
    except Exception as e:
        error_msg = f"Error scanning vault: {str(e)}\n{traceback.format_exc()}"
        logger.error(error_msg)
        return 0, 0, [error_msg]