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#encoding: utf-8
"""
Press review methods.
"""

import feedparser
import sqlite3
import time

import config
from logs import Log
from messages import messages
from utils import get_cursor, get_url, is_moderator

class Rp():
    def __init__(self):
        """
        Initialisation of the press review utilities
        """
        # Date of next cleaning
        next_week = time.localtime(time.mktime(time.localtime())+(config.MASTER_CLEANING*86400))
        self.next_cleaning = time.strptime("%s-%s-%s %s" % (
            next_week.tm_year,
            next_week.tm_mon,
            next_week.tm_mday,
            time.tzname[0]
        ), "%Y-%m-%d %Z")
        # Number of press review articles actually waiting
        self.number = None
        # default last_entry_published for tweets
        self.last_entry_published = time.strptime("2000-01-01", "%Y-%m-%d")
        # See if there is a later last_entry_published for tweets
        connection = sqlite3.connect(config.sqlite_db)
        for row in connection.execute("SELECT last_entry_published FROM tweets"):
            self.last_entry_published = time.strptime(
                row[0].encode("utf-8"),
                "%Y-%m-%d %H:%M:%S %Z"
            )
        Log.debug("Dernier tweet: %s" % self.last_entry_published)

    def tweet(self):
        """
        Tweet some RP based on french and english feeds
        """
        for feed in config.feeds:
            self.rp_to_twitter(feed)

    def rp_to_twitter(self, feed):
        """
        By parsing the RSS feed of the press-review, we know what to tweet.
        """
        Log.debug("rp_to_twitter method")
        now = time.localtime()
        today = time.strptime("%s-%s-%s %s" % (
            now.tm_year,
            now.tm_mon,
            now.tm_mday,
            time.tzname[0]
            ), "%Y-%m-%d %Z")
        language = "fr"
        if "/en/" in feed:
            language = "en"
        entries = feedparser.parse(feed)['entries']
        entries.reverse()
        Log.debug(self.last_entry_published)
        for entry in entries:
            # if date of publication is greater than today, midnight, and
            # lesser than future
            if today < entry.published_parsed < now:
                if self.last_entry_published < entry.published_parsed:
                    # Let's see if we can truncate the lenght of the tweet
                    # We have 5 chars for the language, so max-length is 135
                    title = entry.title.encode("utf-8")
                    link = entry.link.encode("utf-8")
                    if len(title) + min(len(link),23) > 135:
                        # What is the number of chars we need to remove
                        excess = len(title) + min(len(link),23) - 135
                        title = ''.join([title[:-(excess + 2)], ' …'])
                    tweet(messages["tweet_rp_%s" % language] % (
                        title,
                        link
                    ))
                    Log.debug(entry.published_parsed)
                    Log.debug(entry.title)
                    # Save last_entry_published
                    self.last_entry_published = entry.published_parsed
                    last_entry_published = time.strftime(
                        "%Y-%m-%d %H:%M:%S %Z",
                        self.last_entry_published
                    )
                    connection = sqlite3.connect(config.sqlite_db)
                    connection.execute(
                        "UPDATE tweets SET last_entry_published=?",
                        (last_entry_published,)
                    )
                    connection.commit()
                    # Tweet only one message in order not to spam
                    return
                else:
                    Log.debug(entry.title)
                    Log.debug(entry.published_parsed)

    def count_articles(self):
        """
        Count number of articles not done in RP and returns new topic of the press review channel
        if necessary.
        """
        Log.debug("count_articles method")
        topic = ""
        cursor = get_cursor()
        cursor.execute("""SELECT COUNT(*) FROM presse
            WHERE DATE_SUB(NOW(), INTERVAL 2 MONTH)<datec
            AND note > 2
            AND nid = 0""")
        rows = cursor.fetchall()
        number = int(rows[0][0])
        Log.debug("Found %s articles." % number)
        if self.number != number:
            topic = messages["topic"] % number
        self.number = number
        return topic

    def clean_master_rp(self):
        """
        This method cleans known users from rp_mastering each MASTER_CLEANING days
        """
        if time.localtime()>self.next_cleaning:
            # Cleaning users
            connection = sqlite3.connect(config.sqlite_db)
            connection.execute("UPDATE rpator SET score=score-1")
            connection.execute("DELETE FROM rpator WHERE score<1")
            connection.commit()
            # Date of next cleaning
            next_week = time.localtime(time.mktime(time.localtime())+(MASTER_CLEANING*86400))
            self.next_cleaning = time.strptime("%s-%s-%s %s" % (
                next_week.tm_year,
                next_week.tm_mon,
                next_week.tm_mday,
                time.tzname[0]
            ), "%Y-%m-%d %Z")

    def status(self, user, msg):
        """
        Retrieving status of the article in rp database.
        """
        url = get_url(msg)
        Log.debug("url: %s" % url)
        if not url:
            return ""

        # Looking for such an article in database
        cursor = get_cursor()
        # We need to be able to retrieve an url with "http" or "https"
        if url.startswith("https"):
            url2 = "http" + url[5:]
        else:
            url2 = "https" + url[4:]
        cursor.execute("""
            SELECT cite, nid, note
            FROM presse
            WHERE url = %s
            OR url = %s""",
            (url, url2)
        )
        rows = cursor.fetchall()
        if not rows:
            return messages["status_unknown_article"] % user
        message = "%s: note %s / " % (user, rows[0][2])
        if rows[0][0] & 1:
            message += "cite LQdN / "
        if rows[0][0] & 2:
            message += "parle de LQdN / "
        if rows[0][0] & 4:
            message += "archivé / "
        if rows[0][1] > 0:
            message += "publié (https://laquadrature.net/node/%s) / " % rows[0][1]
        else:
            message += "non publié / "
        return message[:-3]

    def kill(self, user, msg):
        """
        Kill an article by setting its score to -100.
        """
        Log.debug("kill command")
        if is_moderator(user):
            url = get_url(msg)
            Log.debug("url: %s" % url)
            if url == "":
                return message
            elif url == "http":
                return messages["rp_http"] % user
            # Looking for such an article in database
            cursor = get_cursor()
            # We need to be able to retrieve an url with "http" or "https"
            if url.startswith("https"):
                url2 = "http" + url[5:]
            else:
                url2 = "https" + url[4:]
            cursor.execute("""
                SELECT id, note
                FROM presse
                WHERE url = %s
                OR url = %s""",
                (url, url2)
            )
            rows = cursor.fetchall()
            if not rows:
                return messages["kill_none"] % url
            else:
                cursor.execute("UPDATE presse SET note=-100 WHERE id=%s", (rows[0][0], ))
                return messages["kill_done"] % url
        return messages["not_moderator"]

    def stats(self):
        """
        Returns stats on articles in press review.
        """
        Log.debug("stats command")
        cursor = get_cursor()
        periods = [1, 3, 7, 15]
        notes = [0, 3, 4]
        notnull = 0
        somethingatall = 0
        for note in notes:
            notnull = 0
            period_result = ""
            for period in periods:
                cursor.execute("""
                    SELECT COUNT(id) AS cid
                    FROM presse
                    WHERE nid=0
                    AND datec>(NOW()-INTERVAL %s DAY)
                    AND note>=%s""",
                    (period, note)
                )
                rows = cursor.fetchall()
                if rows[0][0] > 0:
                    period_result = period_result + "%sj:%s, " % (period, rows[0][0])
                    notnull = 1
                    somethingatall = 1
            if notnull:
                return "note>=%s: " % note + period_result[:-2]
        if somethingatall == 0:
            return messages["stats_bravo"] % periods[-1]

    def rp(self, command, user, channel, msg):
        """
        Adding the article in rp database.
        """
        cite = 0
        note = 1
        answer = False
        url = get_url(msg)
        Log.debug("url: %s" % url)
        if not url:
            return ""

        # Managing flags
        # LQdN is quoted
        if "c" in command:
            cite += 1
        # the article speak about LQdN
        if command.count("p") > 1:
            cite += 2
        # Archive this article
        if "a" in command:
            cite += 4

        # Looking for such an article in database
        cursor = get_cursor()
        # We need to be able to retrieve an url with "http" or "https"
        if url.startswith("https"):
            url2 = "http" + url[5:]
        else:
            url2 = "https" + url[4:]
        cursor.execute("""
            SELECT id, note, provenance
            FROM presse
            WHERE url = %s
            OR url = %s""",
            (url, url2)
        )
        rows = cursor.fetchall()
        if not rows:
            Log.debug("Adding an article by %s: %s" % (user, url))
            cursor.execute("""
                INSERT INTO presse SET
                url=%s, provenance=%s, cite=%s, note=%s, datec=NOW(), title='',
                lang='', published=0, nid=0, screenshot=0, fetched=0, seemscite=0
                """,
                (url, user, cite, note)
            )
            answer = True
        else:
            if rows[0][2] != user:
                Log.debug("Adding a point by %s on %s" % (user, rows[0][0]))
                cursor.execute(
                    "UPDATE presse SET note=note+1 WHERE id=%s",
                    (rows[0][0], )
                )
            note = rows[0][1]+1
            answer = True
            if note>=3:
                # Update number of articles to do
                self.count_articles()
        if answer:
            # Answer is now based on where, who, note, and a little magic
            return self.did_rp(channel, user, note)

    def did_rp(self, channel, user, note):
        """
        Answers after a "rp" command has been submitted. The answer is based on the channel, the
        user and the note of the article.
        """
        know_rp = False
        known_user = False
        master_user = False
        # Retrieve user's score in database
        connection = sqlite3.connect(config.sqlite_db)
        score = 0
        for row in connection.execute("SELECT score FROM rpator WHERE name='%s'" % user):
            known_user = True
            score = int(row[0])
            if score>config.MASTER_SCORE:
                master_user = True
        # Channel is RP_CHANNEL, so the user is knowing the rp yet
        if channel==config.RP_CHANNEL:
            know_rp = True
        Log.debug("know_rp     : %s" % know_rp)
        Log.debug("known_user  : %s" % known_user)
        Log.debug("score       : %s" % score)
        Log.debug("master_user : %s" % master_user)
        # Store new score for this user
        if known_user:
            connection.execute("UPDATE rpator SET score=score+1 WHERE name='%s';" % user)
        else:
            connection.execute("INSERT INTO rpator (name, score) VALUES ('%s', 1);" % user)
        connection.commit()

        # Ok, we got all information we need, let's answer now !
        if master_user:
            # user is a rp master
            if note==1:
                return messages["master_rp_new_article"] % user
            elif note<3:
                return messages["master_rp_known_article"] % user
            else:
                return messages["master_rp_taken_article"] % user
        elif known_user or know_rp:
            # user is known but not a master and/or he knows the rp channel
            if note==1:
                return messages["known_rp_new_article"] % user
            elif note<3:
                return messages["known_rp_known_article"] % user
            else:
                return messages["known_rp_taken_article"] % user
        else:
            # user is unknown, and he does'nt seems to know the rp channel
            if note==1:
                return messages["new_rp_new_article"] % user
            elif note<3:
                return messages["new_rp_known_article"] % user
            else:
                return messages["new_rp_taken_article"] % user