import logging
import settings
import os


def read_priorities_transmitters(filename):
    # Priorities and favorite transmitters
    # read the following format
    #   43017 1. KgazZMKEa74VnquqXLwAvD
    if filename is not None and os.path.exists(filename):
        with open(filename, "r") as fp:
            satprio = {}
            sattrans = {}
            lines = fp.readlines()
            for line in lines:
                if line[0]=="#":
                    continue
                parts = line.strip().split(" ")
                sat = parts[0]
                prio = parts[1]
                transmitter = parts[2]
                satprio[sat] = float(prio)
                sattrans[sat] = transmitter
        return (satprio, sattrans)
    else:
        return ({}, {})


def get_priority_passes(passes, priorities, favorite_transmitters, only_priority, min_priority):
    priority = []
    normal = []
    for satpass in passes:
        # Is this satellite a priority satellite?
        if satpass['id'] in priorities:
            # Is this transmitter a priority transmitter?
            if satpass['uuid'] == favorite_transmitters[satpass['id']]:
                satpass['priority'] = priorities[satpass['id']]
                satpass['uuid'] = favorite_transmitters[satpass['id']]

                # Add if priority is high enough
                if satpass['priority'] >= min_priority:
                    priority.append(satpass)
        elif only_priority:
            # Find satellite transmitter with highest number of good observations
            max_good_count = max([s['good_count'] for s in passes if s["id"] == satpass["id"]])
            if max_good_count > 0:
                satpass['priority'] = \
                    (float(satpass['altt']) / 90.0) \
                    * satpass['success_rate'] \
                    * float(satpass['good_count']) / max_good_count
            else:
                satpass['priority'] = (float(satpass['altt']) / 90.0) * satpass['success_rate']

            # Add if priority is high enough
            if satpass['priority'] >= min_priority:
                normal.append(satpass)
    return (priority, normal)