Refactoring tournament info fetch

1 files changed, 46 insertions, 196 deletions

diff --git a/jfr_playoff/tournamentinfo/__init__.py b/jfr_playoff/tournamentinfo/__init__.py
index 70e341f..fa60d75 100644
--- a/jfr_playoff/tournamentinfo/__init__.py
+++ b/jfr_playoff/tournamentinfo/__init__.py
@@ -1,185 +1,41 @@
-from math import ceil
-import re
-
-import jfr_playoff.sql as p_sql
-from jfr_playoff.remote import RemoteUrl as p_remote
 from jfr_playoff.logger import PlayoffLogger
 
-SWISS_TIE_WARNING = 'tie detected in swiss %s.' + \
-                    ' Make sure to resolve the tie by arranging teams' + \
-                    ' in configuration file.'
-
-
-class TournamentInfo:
 
-    def __init__(self, settings, database):
+class TournamentInfoClient(object):
+    def __init__(self, settings, database=None):
         self.settings = settings
         self.database = database
 
-    def __get_html_results(self):
-        if 'link' not in self.settings:
-            raise KeyError('link not configured')
-        if not self.settings['link'].endswith('leaderb.html'):
-            raise ValueError('invalid link to tournament results')
-        PlayoffLogger.get('tournamentinfo').info(
-            'fetching tournament results from leaderboard URL: %s',
-            self.settings['link'])
-        leaderboard = p_remote.fetch(self.settings['link'])
-        result_links = [
-            row.select('a[onmouseover]')
-            for row
-            in leaderboard.find_all('tr')
-            if len(row.select('a[onmouseover]')) > 0]
-        results = [None] * (len(result_links) * max([
-            len(links) for links in result_links]))
-        for i in range(0, len(result_links)):
-            for j in range(0, len(result_links[i])):
-                results[len(result_links) * j + i] = result_links[i][j]
-        teams = []
-        team_links = {}
-        for team in results:
-            if team is not None:
-                team_info = []
-                fullname = team.text.strip(u'\xa0')
-                team_links[team['href']] = fullname
-                team_info.append(fullname)
-                team_info.append('')
-                team_image = team.find('img')
-                if team_image is not None:
-                    team_info.append(team_image['src'].replace('images/', ''))
-                teams.append(team_info)
-        PlayoffLogger.get('tournamentinfo').info(
-            'read tournament results from leaderboard: %s', teams)
-        for table in range(1, int(ceil(len(teams)/2.0))+1):
-            table_url = self.get_results_link('1t%d-1.html' % (table))
-            table_content = p_remote.fetch(table_url)
-            PlayoffLogger.get('tournamentinfo').info(
-                'reading team shortnames from traveller: %s', table_url)
-            for link in table_content.select('a.br'):
-                if link['href'] in team_links:
-                    for team in teams:
-                        if team[0] == team_links[link['href']]:
-                            team[1] = link.text.strip(u'\xa0')
-                            PlayoffLogger.get('tournamentinfo').info(
-                                'shortname for %s: %s', team[0], team[1])
-                            break
-        PlayoffLogger.get('tournamentinfo').info(
-            'tournament results from HTML: %s', teams)
-        return teams
+    def get_results_link(self, suffix):
+        pass
 
-    def __get_db_results(self):
-        if self.database is None:
-            raise KeyError('database not configured')
-        if 'database' not in self.settings:
-            raise KeyError('database not configured')
-        if 'ties' not in self.settings:
-            self.settings['ties'] = []
-        swiss_teams = self.database.fetch_all(
-            self.settings['database'], p_sql.SWISS_RESULTS, {})
-        swiss_results = sorted(
-            swiss_teams,
-            key=lambda t: self.settings['ties'].index(t[0]) \
-            if t[0] in self.settings['ties'] else -1)
-        swiss_results = sorted(
-            swiss_results, key=lambda t: t[1], reverse=True)
-        swiss_results = sorted(swiss_results, key=lambda team: team[2])
-        PlayoffLogger.get('tournamentinfo').info(
-            'fetched tournament results from database %s: %s',
-            self.settings['database'], swiss_results)
-        prev_result = None
-        for team in swiss_results:
-            if prev_result == team[1]:
-                PlayoffLogger.get('tournamentinfo').warning(
-                    SWISS_TIE_WARNING, self.settings['database'])
-            prev_result = team[1]
-        db_teams = [[team[0], team[3], team[4]] for team in swiss_results]
-        PlayoffLogger.get('tournamentinfo').info(
-            'fetched team list from database %s: %s',
-            self.settings['database'], db_teams)
-        return db_teams
+    def is_finished(self):
+        pass
 
-    def __get_html_finished(self):
-        if 'link' not in self.settings:
-            raise KeyError('link not configured')
-        if not self.settings['link'].endswith('leaderb.html'):
-            raise ValueError('invalid tournament leaderboard link')
-        PlayoffLogger.get('tournamentinfo').info(
-            'fetching tournament finished status from HTML: %s',
-            self.settings['link'])
-        leaderboard = p_remote.fetch(self.settings['link'])
-        leaderb_heading = leaderboard.select('td.bdnl12')[0].text
-        contains_digits = any(char.isdigit() for char in leaderb_heading)
-        PlayoffLogger.get('tournamentinfo').info(
-            'tournament header from HTML: %s, %s',
-            leaderb_heading,
-            'contains digits' if contains_digits else "doesn't contain digits")
-        non_zero_scores = [
-            imps.text
-            for imps
-            in leaderboard.select('td.bdc small')
-            if imps.text != '0-0']
-        PlayoffLogger.get('tournamentinfo').info(
-            'tournament leaderboard from HTML: has %d non-zero scores',
-            len(non_zero_scores))
-        finished = (not contains_digits) and (len(non_zero_scores) > 0)
-        PlayoffLogger.get('tournamentinfo').info(
-            'tournament leaderboard from HTML indicates finished: %s',
-            finished)
-        return finished
+    def get_tournament_results(self):
+        pass
 
-    def __get_db_finished(self):
-        if self.database is None:
-            raise KeyError('database not configured')
-        if 'database' not in self.settings:
-            raise KeyError('database not configured')
-        finished = self.database.fetch(
-            self.settings['database'], p_sql.SWISS_ENDED, {})
-        PlayoffLogger.get('tournamentinfo').info(
-            'fetching tournament finished status from DB %s: %s',
-            self.settings['database'], finished)
-        return (len(finished) > 0) and (finished[0] > 0)
+    def get_exceptions(self, method):
+        pass
 
-    def __get_html_link(self, suffix='leaderb.html'):
-        if 'link' not in self.settings:
-            raise KeyError('link not configured')
-        if not self.settings['link'].endswith('leaderb.html'):
-            raise ValueError('invalid tournament leaderboard link')
-        link = re.sub(r'leaderb.html$', suffix, self.settings['link'])
-        PlayoffLogger.get('tournamentinfo').info(
-            'generating tournament-specific link from leaderboard link %s: %s -> %s',
-            self.settings['link'], suffix, link)
-        return link
 
-    def __get_db_link(self, suffix='leaderb.html'):
-        if self.database is None:
-            raise KeyError('database not configured')
-        if 'database' not in self.settings:
-            raise KeyError('database not configured')
-        row = self.database.fetch(
-            self.settings['database'], p_sql.PREFIX, ())
-        if row is not None:
-            if len(row) > 0:
-                link = row[0] + suffix
-                PlayoffLogger.get('tournamentinfo').info(
-                    'generating tournament-specific link from DB %s prefix: %s -> %s',
-                    self.settings['database'], suffix, link)
-                return link
-        raise ValueError('unable to fetch db link')
+class TournamentInfo:
+
+    def __init__(self, settings, database):
+        self.settings = settings
+        from jfr_playoff.tournamentinfo.jfrdb import JFRDbTournamentInfo
+        from jfr_playoff.tournamentinfo.jfrhtml import JFRHtmlTournamentInfo
+        from jfr_playoff.tournamentinfo.tcjson import TCJsonTournamentInfo
+        self.clients = []
+        if (database is not None) and ('database' in self.settings):
+            self.clients.append(JFRDbTournamentInfo(settings, database))
+        if 'link' in self.settings:
+            if self.settings['link'].endswith('leaderb.html'):
+                self.clients.append(JFRHtmlTournamentInfo(settings))
+            self.clients.append(TCJsonTournamentInfo(settings))
 
     def get_tournament_results(self):
-        teams = []
-        try:
-            teams = self.__get_db_results()
-        except (IOError, TypeError, IndexError, KeyError) as e:
-            PlayoffLogger.get('tournamentinfo').warning(
-                'cannot determine tournament results from DB: %s(%s)',
-                type(e).__name__, str(e))
-            try:
-                teams = self.__get_html_results()
-            except (TypeError, IndexError, KeyError, IOError, ValueError) as e:
-                PlayoffLogger.get('tournamentinfo').warning(
-                    'cannot determine tournament results from HTML: %s(%s)',
-                    type(e).__name__, str(e))
+        teams = self.__call_client('get_tournament_results', [])
         if self.is_finished():
             final_positions = self.settings.get('final_positions', [])
             PlayoffLogger.get('tournamentinfo').info(
@@ -192,33 +48,27 @@ class TournamentInfo:
         return teams
 
     def is_finished(self):
-        try:
-            return self.__get_db_finished()
-        except (IOError, TypeError, IndexError, KeyError) as e:
-            PlayoffLogger.get('tournamentinfo').warning(
-                'cannot determine tournament finished status from DB: %s(%s)',
-                type(e).__name__, str(e))
-            try:
-                return self.__get_html_finished()
-            except (TypeError, IndexError, KeyError, IOError, ValueError) as e:
-                PlayoffLogger.get('tournamentinfo').warning(
-                    'cannot determine tournament finished status from HTML: %s(%s)',
-                    type(e).__name__, str(e))
-        PlayoffLogger.get('tournamentinfo').info(
-            'assuming tournament is finished')
-        return True
+        return self.__call_client('is_finished', True)
 
     def get_results_link(self, suffix='leaderb.html'):
-        try:
-            return self.__get_db_link(suffix)
-        except (IOError, TypeError, IndexError, KeyError) as e:
-            PlayoffLogger.get('tournamentinfo').warning(
-                'cannot determine tournament link from DB: %s(%s)',
-                type(e).__name__, str(e))
+        return self.__call_client('get_results_link', None, suffix)
+
+    def __call_client(self, method, default, *args):
+        PlayoffLogger.get('tournamentinfo').info(
+            'calling %s on tournament info clients', method)
+        for client in self.clients:
             try:
-                return self.__get_html_link(suffix)
-            except (KeyError, ValueError):
-                PlayoffLogger.get('tournamentinfo').warning(
-                    'cannot determine tournament link from HTML: %s(%s)',
-                    type(e).__name__, str(e))
-        return None
+                ret = getattr(client, method)(*args)
+                PlayoffLogger.get('tournamentinfo').info(
+                    '%s method returned %s', method, ret)
+                return ret
+            except Exception as e:
+                if type(e) in client.get_exceptions(method):
+                    PlayoffLogger.get('tournamentinfo').warning(
+                        '%s method raised %s(%s)',
+                        method, type(e).__name__, str(e))
+                else:
+                    raise
+        PlayoffLogger.get('tournamentinfo').info(
+            '%s method returning default: %s', method, default)
+        return default