#!/usr/bin/env python3

# http://inamidst.com/saxo/
# Created by Sean B. Palmer

import time
import saxo

# TODO: Generic code
def snug(parts, limit):
    i = 0
    length = 0
    for i, text in enumerate(parts):
        length += len(text)
        if length > limit:
            break
    return parts[:i + 1]

@saxo.pipe
def periodic(arg):
    if arg:
        return "?"
    if not saxo.env("base"):
        return "Sorry, this command requires an IRC instance"

    periodics = {}
    now = int(time.time())
    with saxo.database() as db:
        for row in db["saxo_periodic"].rows():
            name = row[0]
            period = row[1]
            remaining = period - (now % period)
            periodics[name] = remaining

    result = []
    for name in sorted(periodics, key=lambda n: periodics[n]):
        result.append("%s (%ss)" % (name, periodics[name]))
    result = snug(result, 128)

    if result:
        prefix = "There are %s periodic tasks. Coming up: " % len(periodics)
        return prefix + ", ".join(result)
    else:
        return "Sorry, no periodic tasks found"