#!/usr/bin/env python

import os
import sys
import chardet
import json

sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
os.environ['DJANGO_SETTINGS_MODULE'] = 'scannerjammer.settings'

from db import db as DB
from pprint import pprint

import django
from datetime import datetime

from django.conf import settings
from django.contrib.auth.models import User

from backend.models import SJLike
from backend.models import SJRoom
from backend.models import SJContent
from backend.models import SJSearch
from backend.models import SJUserProfile

from backend.views import thraw
from backend.views import freeze

class MigrateDB(DB):

    def __init__(self, *args, **kwargs):
        super(MigrateDB, self).__init__(*args, **kwargs)

    def get_table(self, name):
        self.execute('SELECT * FROM %s' % name)
        fields = [d[0] for d in self.cursor.description]
        rows = self.cursor.fetchall()
        for row in rows:
            row = list(row)
            for i, r in enumerate(row[:]):
                if isinstance(r, str):
                    detect = chardet.detect(r)
                    try:
                        row[i] = unicode(r, detect['encoding'] or 'utf8', 'replace')
                    except LookupError:
                        row[i] = unicode(r, 'utf8', 'replace')
            yield dict(zip(fields, row))

    def get_radio_chat_table(self):
        return self.get_table('radio_chat')

    def get_search_log_table(self):
        return self.get_table('search_log')

    def get_sj_bg_table(self):
        return self.get_table('sj_bg')

    def get_sj_chat_table(self):
        return self.get_table('sj_chat')

    def get_sj_likes_table(self):
        return self.get_table('sj_likes')

    def get_sj_likes_tmp_table(self):
        return self.get_table('sj_likes_tmp')

    def get_sj_room_table(self):
        return self.get_table('sj_room')

    def get_sj_search_log_table(self):
        return self.get_table('sj_search_log')

    def get_sj_session_table(self):
        return self.get_table('sj_sesson')

    def get_sj_url_table(self):
        return self.get_table('sj_url')

    def get_sj_url_tmp_table(self):
        return self.get_table('sj_url_tmp')

    def get_sj_user_table(self):
        return self.get_table('sj_user')

    def get_sj_video_table(self):
        return self.get_table('sj_video')

if __name__ == '__main__':

    db = MigrateDB()
    db.connect()
    
    print "loading users..."
    sj_user = list(db.get_sj_user_table())
    map_user = {}
    for row in sj_user:
        try:
            user = User.objects.get(username=row['username'])
        except User.DoesNotExist:
		print "ERROR in users '%s' does not exist" % row['username']
		exit(0)

        map_user[row['id']] = user
    
    print "loading videos..."
    sj_video = list(db.get_sj_video_table())
    map_video = {}
    for row in sj_video:
	try:
            video = SJContent.objects.get(
                old_id=row['id'],
		content_type='video')
        except SJContent.DoesNotExist:
		print "ERROR video '%s' does not exist" % row['id']
		continue

        map_video[row['id']] = video


    # Migrate sj_likes table

    sj_likes = list(db.get_sj_likes_table())
    for row in sj_likes:
        if row['userid'] in map_user:
		user = map_user[row['userid']]
	else:
		print "unknown user in migrate: '%d'" % row['userid']
		continue
        
        if row['videoid'] in map_video:
		video = map_video[row['videoid']]
	else:
		print "unknown video in migrate: '%d'" % row['videoid']
		continue
        
	try:
	    like = SJLike.objects.get(
		    user=user,
		    datetime=datetime.fromtimestamp(row['date']),
		    content=video)
	    print "like '%d' exist" % row['date']
	except SJLike.DoesNotExist:
	    like = SJLike(
		    user=user,
		    datetime=datetime.fromtimestamp(row['date']),
		    content=video)
	    print "like '%d' created" % row['date']
	like.save()