class_user_menu

import datetime
import sys

last_id=0

class Note:
    def __init__(self,memo,tags = ''):
        self.memo = memo
        self.tags = tags
        self.creation_date = datetime.date.today()
        global last_id
        last_id +=1
        self.id = last_id

    def match(self,filter):
        return filter in self.memo or filter in self.tags



class Notebook:
    def __init__(self):
        self.notes = []

    def new_note(self,memo,tags=''):
        self.notes.append(Note(memo,tags))

    def modify_memo(self,note_id,memo):
        for note in self.notes:
            if note.id == note_id:
                note.memo = memo
                break

    def modify_tags(self,note_id,tags):
        for note in self.notes:
            if note.id == note_id:
                note.tags = tags
                break

    def search(self,filter):
        return [note for note in self.notes if note.match(filter)]


class Menu:
    def __init__(self):
        self.notebook= Notebook()
        self.choices = {
            '1':self.show_notes,
            '2':self.search_notes,
            '3':self.add_note,
            '4':self.modify_note,
            '5':self.quit


        }

    def display_menu(self):
        print('''
        Notebook Menu

        1. Show all Notes
        2. Search Notes
        3. Add Note
        4. Modify Note
        5. Quit


        '''
        )

    def run(self):
        while True:
            self.display_menu()
            choice = input('Enter an option: ')
            action = self.choices.get(choice)
            if action:
                action()
            else:
                print('{} is not a valid choice'.format(choice))



    def show_notes(self,notes=None):
        if not notes:
            notes = self.notebook.notes
        for note in notes:
            print('{}:{}\n{}'.format(note.id,note.tags,note.memo))

    def search_notes(self):
        filter = input('Search for: ')
        notes = self.notebook.search(filter)
        self.show_notes(notes)

    def add_note(self):
        memo = input('Enter a memo: ')
        self.notebook.new_note(memo)
        print('Your note has been added')

    def modify_note(self):
        id = input('Enter a note id: ')
        memo=input('Enter a memo: ')
        tags= input('Enter tags: ')
        if memo:
            self.notebook.modify_memo(id,memo)
        if tags:
            self.notebook.modify_tags(id,tags)

    def quit(self):
        print('Thank you for using yout notebook')
        sys.exit(0)



if __name__ == "__main__":
    Menu().run()