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#!/usr/bin/python3
"""
Adds Wikipedia page view info to the database as popularity values.
"""
import os, sqlite3
PAGEVIEWS_DB = os.path.join('enwiki', 'pageview_data.db')
DB_FILE = 'data.db'
def genData(pageviewsDb: str, dbFile: str) -> None:
dbCon = sqlite3.connect(dbFile)
dbCur = dbCon.cursor()
#
print('Getting event data')
titleToId: dict[str, int] = {}
for eventId, title in dbCur.execute('SELECT id, title FROM events'):
titleToId[title] = eventId
#
print('Getting view counts')
pdbCon = sqlite3.connect(pageviewsDb)
pdbCur = pdbCon.cursor()
titleToViews: dict[str, int] = {}
iterNum = 0
for title, views in pdbCur.execute('SELECT title, views from views'):
iterNum += 1
if iterNum % 1e6 == 0:
print(f'At iteration {iterNum}')
#
if title not in titleToId:
continue
titleToViews[title] = views
pdbCon.close()
#
print(f'Result: {len(titleToViews)} out of {len(titleToId)}')
dbCur.execute('CREATE TABLE pop (id INT PRIMARY KEY, pop INT)')
dbCur.execute('CREATE INDEX pop_idx ON pop(pop)')
for title, views in titleToViews.items():
dbCur.execute('INSERT INTO pop VALUES (?, ?)', (titleToId[title], views))
#
dbCon.commit()
dbCon.close()
if __name__ == '__main__':
import argparse
parser = argparse.ArgumentParser(description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter)
args = parser.parse_args()
#
genData(PAGEVIEWS_DB, DB_FILE)
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