import gradio as gr
import logging
from app.document_handling import upload_and_index, list_indexed_files, delete_file_from_database
from app.functions.database_handling import (
    create_database, 
    modify_database, 
    delete_database, 
    list_databases
)

class ManagementTabs:
    def __init__(self, update_all_dropdowns):
        self.update_all_dropdowns = update_all_dropdowns
        self.databases = list_databases()
        
    def create_tabs(self):
        with gr.Tabs():
            self._create_db_management_tab()
            self._create_document_management_tab()
            
    def _create_db_management_tab(self):
        with gr.Tab("Gestione Database"):
            gr.Markdown("## Operazioni sui Database")
            
            with gr.Row():
                # Creazione Database
                with gr.Column():
                    gr.Markdown("### Crea Database")
                    self.db_name_input = gr.Textbox(label="Nome Nuovo Database")
                    self.create_db_button = gr.Button("Crea Database")
                    self.create_output = gr.Textbox(label="Stato Creazione")
                
                # Modifica Database
                with gr.Column():
                    gr.Markdown("### Rinomina Database")
                    self.modify_db_old_name = gr.Dropdown(
                        choices=self.databases, 
                        label="Database da Rinominare"
                    )
                    self.modify_db_new_name = gr.Textbox(label="Nuovo Nome")
                    self.modify_db_button = gr.Button("Rinomina Database")
                    self.modify_output = gr.Textbox(label="Stato Modifica")
                
                # Eliminazione Database
                with gr.Column():
                    gr.Markdown("### Elimina Database")
                    self.delete_db_dropdown = gr.Dropdown(
                        choices=self.databases, 
                        label="Database da Eliminare"
                    )
                    self.delete_db_button = gr.Button("Elimina Database")
                    self.delete_output = gr.Textbox(label="Stato Eliminazione")
            
            self._setup_db_events()
    
    def _create_document_management_tab(self):
        with gr.Tab("Gestione Documenti"):
            with gr.Column():
                # Upload Documenti
                gr.Markdown("### Carica Documenti")
                with gr.Row():
                    self.file_input = gr.File(
                        label="Carica i tuoi documenti",
                        file_types=[".txt", ".pdf", ".docx"],
                        file_count="multiple"
                    )
                    self.db_name_upload = gr.Dropdown(
                        choices=self.databases,
                        label="Seleziona Database",
                        value="default_db"
                    )
                
                with gr.Row():
                    self.title_input = gr.Textbox(label="Titolo del documento")
                    self.author_input = gr.Textbox(label="Autore")
                
                self.upload_button = gr.Button("Indicizza Documenti")
                self.upload_output = gr.Textbox(label="Stato Upload")
                
                # Gestione File
                self._setup_file_management()
            
            self._setup_document_events()
    
    def _setup_file_management(self):
        gr.Markdown("### Gestione File")
        with gr.Row():
            self.db_name_list = gr.Dropdown(
                choices=self.databases,
                label="Database",
                value="default_db"
            )
            self.list_button = gr.Button("Lista File")
        self.list_output = gr.Textbox(label="File nel Database")
        
        with gr.Row():
            self.delete_file_input = gr.Textbox(label="Nome File da Eliminare")
            self.delete_file_button = gr.Button("Elimina File")
        self.delete_file_output = gr.Textbox(label="Stato Eliminazione")
    
    def _setup_db_events(self):
        # Eventi per la gestione del database
        self.create_db_button.click(
            fn=create_database,
            inputs=self.db_name_input,
            outputs=self.create_output
        ).then(fn=self.update_all_dropdowns)
        
        self.modify_db_button.click(
            fn=modify_database,
            inputs=[self.modify_db_old_name, self.modify_db_new_name],
            outputs=self.modify_output
        ).then(fn=self.update_all_dropdowns)
        
        self.delete_db_button.click(
            fn=delete_database,
            inputs=self.delete_db_dropdown,
            outputs=self.delete_output
        ).then(fn=self.update_all_dropdowns)
    
    def _setup_document_events(self):
        # Eventi per la gestione dei documenti
        self.upload_button.click(
            fn=self._upload_and_index_callback,
            inputs=[self.file_input, self.title_input, self.author_input, self.db_name_upload],
            outputs=self.upload_output
        ).then(fn=self.update_all_dropdowns).then(
            fn=self._list_files_callback,
            inputs=[self.db_name_list],
            outputs=self.list_output
        )
        
        self.list_button.click(
            fn=self._list_files_callback,
            inputs=[self.db_name_list],
            outputs=self.list_output
        )
        
        self.delete_file_button.click(
            fn=self._delete_file_callback,
            inputs=[self.delete_file_input, self.db_name_list],
            outputs=self.delete_file_output
        ).then(fn=self.update_all_dropdowns)
    
    def _upload_and_index_callback(self, files, title, author, db_name):
        try:
            status = upload_and_index(files, title, author, db_name)
            logging.info(f"Upload completato: {status}")
            return status
        except Exception as e:
            logging.error(f"Errore durante l'upload: {str(e)}")
            return f"Errore: {str(e)}"
    
    def _list_files_callback(self, db_name):
        return list_indexed_files(db_name)
    
    def _delete_file_callback(self, file_name, db_name):
        return delete_file_from_database(file_name, db_name)

def create_management_tabs(update_all_dropdowns):
    tabs = ManagementTabs(update_all_dropdowns)
    tabs.create_tabs()
    return tabs