#!/usr/bin/env python

# coding=utf-8

import argparse

import datetime

import sys

import logging

from lxml import etree

import utils

def get_logger():

    return logging.getLogger(__name__)

def set_logging(options, plogger=None, queue=None):

    logging_config = {

        "format" : '%(asctime)s %(levelname)s:%(name)s:%(message)s',

        "level" : max(logging.NOTSET, min(logging.CRITICAL, logging.WARNING - 10 * options.verbose + 10 * options.quiet)), #@UndefinedVariable

    }

    if options.logfile == "stdout":

        logging_config["stream"] = sys.stdout

    elif options.logfile == "stderr":

        logging_config["stream"] = sys.stderr

    else:

        logging_config["filename"] = options.logfile

    logger = plogger

    if logger is None:

        logger = get_logger() #@UndefinedVariable

    if len(logger.handlers) == 0:

        filename = logging_config.get("filename")

        if queue is not None:

            hdlr = QueueHandler(queue, True)

        elif filename:

            mode = logging_config.get("filemode", 'a')

            hdlr = logging.FileHandler(filename, mode) #@UndefinedVariable

        else:

            stream = logging_config.get("stream")

            hdlr = logging.StreamHandler(stream) #@UndefinedVariable

        fs = logging_config.get("format", logging.BASIC_FORMAT) #@UndefinedVariable

        dfs = logging_config.get("datefmt", None)

        fmt = logging.Formatter(fs, dfs) #@UndefinedVariable

        hdlr.setFormatter(fmt)

        logger.addHandler(hdlr)

        level = logging_config.get("level")

        if level is not None:

            logger.setLevel(level)

    options.debug = (options.verbose-options.quiet > 0)

    return logger

def set_logging_options(parser):

    parser.add_argument("-l", "--log", dest="logfile",

                      help="log to file", metavar="LOG", default="stderr")

    parser.add_argument("-v", dest="verbose", action="count",

                      help="verbose", default=0)

    parser.add_argument("-q", dest="quiet", action="count",

                      help="quiet", default=0)

def get_options():

    parser = argparse.ArgumentParser(description="All date should be given using iso8601 format. If no timezone is used, the date is considered as UTC")

    parser.add_argument("-f", "--file", dest="filename",

                      help="write export to file", metavar="FILE", default="project.ldt")

    parser.add_argument("-a", "--annot-url", dest="annot_url",

                      help="annotation server url", metavar="ANNOT-URL", required=True)

    parser.add_argument("-s", "--start-date", dest="start_date",

                      help="start date", metavar="START_DATE", default=None)

    parser.add_argument("-e", "--end-date", dest="end_date",

                      help="end date", metavar="END_DATE", default=None)

    parser.add_argument("-I", "--content-file", dest="content_file",

                      help="Content file", metavar="CONTENT_FILE")

    parser.add_argument("-c", "--content", dest="content",

                      help="Content url", metavar="CONTENT")

    parser.add_argument("-V", "--video-url", dest="video",

                      help="video url", metavar="VIDEO")

    parser.add_argument("-i", "--content-id", dest="content_id",

                      help="Content id", metavar="CONTENT_ID")

    parser.add_argument("-C", "--color", dest="color",

                      help="Color code", metavar="COLOR", default="16763904")

    parser.add_argument("-H", "--channel", dest="channels",

                      help="Channel", metavar="CHANNEL", default=[utils.AnnotationsSynchronizer.DEFAULT_ANNOTATION_CHANNEL], action="append")

    parser.add_argument("-E", "--event", dest="events",

                      help="Event", metavar="EVENT", default=[], action="append")

    parser.add_argument("-D", "--duration", dest="duration", type=int,

                      help="Duration", metavar="DURATION", default=None)

    parser.add_argument("-n", "--name", dest="name",

                      help="Cutting name", metavar="NAME", default=u"annotations")

    parser.add_argument("-R", "--replace", dest="replace", action="store_true",

                      help="Replace annotation ensemble", default=False)

    parser.add_argument("-m", "--merge", dest="merge", action="store_true",

                      help="merge annotation ensemble, choose the first ensemble", default=False)

    parser.add_argument("-L", "--list-conf", dest="listconf",

                      help="list of file to process", metavar="LIST_CONF", default=None)

    parser.add_argument("-b", "--base-url", dest="base_url",

                      help="base URL of the platform", metavar="BASE_URL", default="http://ldt.iri.centrepompidou.fr/ldtplatform/")

    parser.add_argument("-p", "--project", dest="project_id",

                      help="Project id", metavar="PROJECT_ID", default=None)

    parser.add_argument("-P", "--post-param", dest="post_param",

                      help="Post param", metavar="POST_PARAM", default=None)

    parser.add_argument("-B", "--batch-size", dest="batch_size", type=int,

                      help="Batch size for annotation request", metavar="BATCH_SIZE", default=500)

    parser.add_argument("--user-whitelist", dest="user_whitelist", action="store",

                      help="A list of user screen name", metavar="USER_WHITELIST",default=None)

    parser.add_argument("--cut", dest="cuts", action="append",

                      help="A cut with the forma <ts in ms>::<duration>", metavar="CUT", default=[])

    set_logging_options(parser)

    return (parser.parse_args(), parser)

def parse_duration(s):

    try:

        return int(s)

    except ValueError:

        parts = s.split(":")

        if len(parts) < 2:

            raise ValueError("Bad duration format")

        time_params = {

            'hours': int(parts[0]),

            'minutes': int(parts[1]),

            'seconds': int(parts[2]) if len(parts)>2 else 0

        }

        return int(round(datetime.timedelta(**time_params).total_seconds()*1000))

if __name__ == "__main__" :

    (options, parser) = get_options()

    set_logging(options)

    get_logger().debug("OPTIONS : " + repr(options)) #@UndefinedVariable

    deltas = [(0,0)]

    total_delta = 0

    if options.cuts:

        cuts_raw = sorted([tuple([parse_duration(s) for s in c.split("::")]) for c in options.cuts])

        for c, d in cuts_raw:

            deltas.append((c+total_delta, -1))

            total_delta += d

            deltas.append((c+total_delta, total_delta))

    if len(sys.argv) == 1 or options.annot_url is None:

        parser.print_help()

        sys.exit(1)

    if options.listconf:

        parameters = []

        confdoc = etree.parse(options.listconf)

        for node in confdoc.xpath("/annotation_export/file"):

            params = {}

            for snode in node:

                if snode.tag == "path":

                    params['content_file'] = snode.text

                    params['content_file_write'] = snode.text

                elif snode.tag == "project_id":

                    params['content_file'] = options.base_url + utils.AnnotationsSynchronizer.LDT_PROJECT_REST_API_PATH + snode.text + "/?format=json"

                    params['content_file_write'] = options.base_url + utils.AnnotationsSynchronizer.LDT_PROJECT_REST_API_PATH + snode.text + "/?format=json"

                    params['project_id'] = snode.text

                elif snode.tag == "start_date":

                    params['start_date'] = snode.text

                elif snode.tag == "end_date":

                    params['end_date'] = snode.text

                elif snode.tag == "duration":

                    params['duration'] = int(snode.text)

                elif snode.tag == "events":

                        params['events'] = [snode.text]

                elif snode.tag == "channels":

                    params['channels'] = [snode.text]

            if options.events or 'events' not in params :

                params['events'] = options.events

            if options.channels or 'channels' not in params :

                params['channels'] = options.channels

            parameters.append(params)

    else:

        if options.project_id:

            content_file = options.base_url + utils.AnnotationsSynchronizer.LDT_PROJECT_REST_API_PATH + options.project_id + "/?format=json"

        else:

            content_file = options.content_file

        parameters = [{

            'start_date'            : options.start_date,

            'end_date'              : options.end_date,

            'duration'              : options.duration,

            'events'                : options.events,

            'channels'              : options.channels,

            'content_file'          : content_file,

            'content_file_write'    : content_file,

            'project_id'            : options.project_id

        }]

    for params in parameters:

        get_logger().debug("PARAMETERS " + repr(params)) #@UndefinedVariable

        sync_args = dict(vars(options))

        sync_args.pop('cuts')

        sync_args.pop('verbose')

        sync_args.pop('quiet')

        sync_args.pop('debug')

        sync_args.pop('listconf')

        sync_args.pop('logfile')

        sync_args['deltas'] = deltas

        sync_args['logger'] = get_logger()

        sync_args.update(params)

        get_logger().debug("SYNC ARGS " + repr(sync_args))

        sync = utils.AnnotationsSynchronizer(**sync_args)

        sync.export_annotations()