from datetime import time, timedelta, timezone, datetime, date
import os
from peewee import fn
import logging

class RandomMemoryJob():
    def __init__(self, models, bot, job_queue):
        self.models = models
        self.bot = bot
        self.logger = logging.getLogger(self.__class__.__name__)
        
        if os.getenv("DOCKERIZED", "false") != "true":
            # when running locally, annoy the programmer every 60 seconds <3
            job_queue.run_repeating(self.callback_memory, interval=60)
            self.min_age = 0 # do not filter messages: show them all
        else:
            # set the message sending time; include UTC shift +2
            sending_time = time(hour=12, minute=0, second=0, tzinfo=timezone(timedelta(hours=2)))
            job_queue.run_daily(self.callback_memory, sending_time)
            self.min_age = 30 # days


    async def callback_memory(self, context):
        
        # last_seen of memory must be older than 10 days in past or None
        with self.models.db:
            possible_entries = self.models.JournalEntry.select().where(
                (self.models.JournalEntry.last_shown <= datetime.today().date() - timedelta(days=self.min_age)) | \
                (self.models.JournalEntry.last_shown == None)
            ).order_by(fn.Random())
        
            try:
                chosen_entry = possible_entries.get()
            except:
                self.logger.warning("Come back later for another memory.")
                return

            # update the last_shown of the chosen entry
            chosen_entry.last_shown = datetime.today().date()
            chosen_entry.save()

        chat_id = os.getenv("CHAT_ID")

        if chosen_entry.media_path:
            await self.bot.send_photo(
                chat_id = chat_id,
                photo = chosen_entry.media_path,
                caption =
                    f"On {chosen_entry.date_pretty}, "
                    f"{chosen_entry.author} wrote: \n"
                    f"{chosen_entry.text}"
                )
        else:
            await self.bot.send_message(
                chat_id = chat_id,
                text =
                    f"On {chosen_entry.date_pretty}, "
                    f"{chosen_entry.author} wrote: \n"
                    f"{chosen_entry.text}"
            )