+#!/usr/bin/env python3
+
+from abc import ABC, abstractmethod
+import datetime
+import glob
import os
import random
import re
import sys
import time
-import glob
+from typing import Callable, List
+
import constants
import trigger
-class chooser(object):
+
+class chooser(ABC):
"""Base class of a thing that chooses pages"""
- def get_page_list(self):
+
+ def get_page_list(self) -> List[str]:
now = time.time()
valid_filename = re.compile("([^_]+)_(\d+)_([^\.]+)\.html")
filenames = []
- pages = [ f for f in os.listdir(constants.pages_dir)
- if os.path.isfile(os.path.join(constants.pages_dir, f))]
+ pages = [
+ f
+ for f in os.listdir(constants.pages_dir)
+ if os.path.isfile(os.path.join(constants.pages_dir, f))
+ ]
for page in pages:
result = re.match(valid_filename, page)
if result != None:
- print(('chooser: candidate page: "%s"' % page))
- if (result.group(3) != "none"):
+ print(f'chooser: candidate page: "{page}"')
+ if result.group(3) != "none":
freshness_requirement = int(result.group(3))
- last_modified = int(os.path.getmtime(
- os.path.join(constants.pages_dir, page)))
- age = (now - last_modified)
- if (age > freshness_requirement):
- print(('chooser: "%s" is too old.' % page))
+ last_modified = int(
+ os.path.getmtime(os.path.join(constants.pages_dir, page))
+ )
+ age = now - last_modified
+ if age > freshness_requirement:
+ print(f'chooser: "{page}" is too old.')
continue
filenames.append(page)
return filenames
- def choose_next_page(self):
+ @abstractmethod
+ def choose_next_page(self) -> str:
pass
+
class weighted_random_chooser(chooser):
- """Chooser that does it via weighted RNG"""
- def __init__(self):
+ """Chooser that does it via weighted RNG."""
+
+ def __init__(self, filter_list: List[Callable[[str], bool]]) -> None:
self.last_choice = ""
self.valid_filename = re.compile("([^_]+)_(\d+)_([^\.]+)\.html")
self.pages = None
self.count = 0
-
- def choose_next_page(self):
- if (self.pages == None or
- self.count % 100 == 0):
+ self.filter_list = filter_list
+ if filter_list is None:
+ self.filter_list = []
+ self.filter_list.append(self.dont_choose_page_twice_in_a_row_filter)
+
+ def dont_choose_page_twice_in_a_row_filter(self, choice: str) -> bool:
+ if choice == self.last_choice:
+ return False
+ self.last_choice = choice
+ return True
+
+ def choose_next_page(self) -> str:
+ if self.pages == None or self.count % 100 == 0:
self.pages = self.get_page_list()
total_weight = 0
weight = int(result.group(2))
weights.append(weight)
total_weight += weight
-
- if (total_weight <= 0):
+ if total_weight <= 0:
raise error
while True:
- pick = random.randrange(0, total_weight - 1)
+ random_pick = random.randrange(0, total_weight - 1)
so_far = 0
for x in range(0, len(weights)):
so_far += weights[x]
- if (so_far > pick and
- self.pages[x] != self.last_choice):
- self.last_choice = self.pages[x]
- self.count += 1
- return self.pages[x]
+ if so_far > random_pick:
+ break
+ choice = self.pages[x]
+
+ # Allow filter list to suppress pages.
+ choice_is_filtered = False
+ for f in self.filter_list:
+ if not f(choice):
+ print(f"chooser: {choice} filtered by {f.__name__}")
+ choice_is_filtered = True
+ break
+ if choice_is_filtered:
+ continue
+
+ # We're good...
+ self.count += 1
+ return choice
+
class weighted_random_chooser_with_triggers(weighted_random_chooser):
"""Same as WRC but has trigger events"""
- def __init__(self, trigger_list):
- weighted_random_chooser.__init__(self)
+
+ def __init__(
+ self,
+ trigger_list: List[trigger.trigger],
+ filter_list: List[Callable[[str], bool]],
+ ) -> None:
+ weighted_random_chooser.__init__(self, filter_list)
self.trigger_list = trigger_list
+ if trigger_list is None:
+ self.trigger_list = []
self.page_queue = set(())
- def check_for_triggers(self):
+ def check_for_triggers(self) -> bool:
triggered = False
for t in self.trigger_list:
x = t.get_triggered_page_list()
triggered = True
return triggered
- def choose_next_page(self):
- if (self.pages == None or
- self.count % 100 == 0):
+ def choose_next_page(self) -> str:
+ if self.pages == None or self.count % 100 == 0:
self.pages = self.get_page_list()
triggered = self.check_for_triggers()
- # First try to satisfy from the page queue
- if (len(self.page_queue) > 0):
- print("Pulling page from queue")
+ # First try to satisfy from the page queue.
+ if len(self.page_queue) > 0:
+ print("chooser: Pulling page from queue...")
page = None
priority = None
for t in self.page_queue:
else:
return weighted_random_chooser.choose_next_page(self), False
-class rotating_chooser(chooser):
- """Chooser that does it in a rotation"""
- def __init__(self):
- self.valid_filename = re.compile("([^_]+)_(\d+)_([^\.]+)\.html")
- self.pages = None
- self.current = 0
- self.count = 0
-
- def choose_next_page(self):
- if (self.pages == None or
- self.count % 100 == 0):
- self.pages = self.get_page_list()
-
- if len(self.pages) == 0:
- raise error
-
- if (self.current >= len(self.pages)):
- self.current = 0
-
- page = self.pages[self.current]
- self.current += 1
- self.count += 1
- return page
-#x = weighted_random_chooser_with_triggers(None)
+# Test
+# def filter_news_during_dinnertime(page):
+# now = datetime.datetime.now()
+# is_dinnertime = now.hour >= 17 and now.hour <= 20
+# return not is_dinnertime or not (
+# "cnn" in page
+# or "news" in page
+# or "mynorthwest" in page
+# or "seattle" in page
+# or "stranger" in page
+# or "twitter" in page
+# or "wsj" in page
+# )
+# x = weighted_random_chooser_with_triggers([], [ filter_news_during_dinnertime ])
+# print(x.choose_next_page())
projects / kiosk.git / blobdiff