adapt to refactor 2020 of skillbird

database.py

@@ -0,0 +1,53 @@
+#!/usr/bin/python3
+import json
+import sqlite3
+import player
+
+DB_BASE = "file:{}?mode=ro"
+
+def getTotalPlayers(database):
+    '''Get the total number of players in the database'''
+
+    print(DB_BASE.format(database))
+    conn = sqlite3.connect(DB_BASE.format(database), uri=True)
+    cursor = conn.cursor()
+    cursor.execute("SELECT Count(*) FROM players")
+    count = cursor.fetchone()[0]
+    conn.close()
+    return count
+
+
+def getRankRange(database, start, end):
+    '''Get a range of players by rank'''
+
+    conn = sqlite3.connect(DB_BASE.format(database), uri=True)
+    cursor = conn.cursor()
+    limit = end - start
+    cursor.execute("Select * FROM players ORDER BY (mu - 2*sigma) DESC LIMIT ? OFFSET ?", (limit, start))
+    rows = cursor.fetchall()
+    conn.close()
+    playerList = []
+    for row in rows:
+        playerList += [player.PlayerInLeaderboard(row)]
+
+    return playerList
+
+def findPlayerByName(playerName):
+    '''Find a player by his name (prefer fullmatch)'''
+
+    conn = sqlite3.connect(DB_BASE.format(database), uri=True)
+    cursor = conn.cursor()
+    playerNamePrepared = "%{}%".format(playerName.replace("%", "%%"))
+    cursor.execute("SELECT * FROM players WHERE name == ?", (playerName,))
+    row = cursor.fetone()
+
+    playerRow = None
+    if row:
+        cursor.execute("SELECT * FROM players WHERE name LIKE ?", (playerNamePrepared,))
+        row = cursor.fetchone()[0]
+        if not row:
+            conn.close()
+            return None
+
+    conn.close()
+    return players.Leaderboard(playerRow)