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#!/usr/bin/python3
"""
Reads enwiki page view info from a database, and stores it
as node popularity values in the database.
"""
import argparse
import os
import 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 view counts')
pdbCon = sqlite3.connect(pageviewsDb)
pdbCur = pdbCon.cursor()
nodeToViews: dict[str, int] = {} # Maps node names to counts
iterNum = 0
for wikiId, views in pdbCur.execute('SELECT id, views from views'):
iterNum += 1
if iterNum % 1e4 == 0:
print(f'At iteration {iterNum}') # Reached 1.6e6
row = dbCur.execute('SELECT name FROM wiki_ids WHERE id = ?', (wikiId,)).fetchone()
if row is not None:
nodeToViews[row[0]] = views
pdbCon.close()
print(f'Writing {len(nodeToViews)} entries to db')
dbCur.execute('CREATE TABLE node_pop (name TEXT PRIMARY KEY, pop INT)')
for nodeName, views in nodeToViews.items():
dbCur.execute('INSERT INTO node_pop VALUES (?, ?)', (nodeName, views))
dbCon.commit()
dbCon.close()
if __name__ == '__main__':
parser = argparse.ArgumentParser(description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter)
args = parser.parse_args()
genData(PAGEVIEWS_DB, DB_FILE)
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