antragstracker/scripts/migrate_strang.py

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#!/usr/bin/env python3
"""Migration: Add 'strang' column to ketten and populate based on Ursprungs-Vorlage typ."""
import sqlite3
import sys
from pathlib import Path
DB_PATH = Path(__file__).parent.parent / "data" / "tracker.db"
VORLAGE_TYP_TO_STRANG = {
"antrag": "antrag",
"anfrage": "anfrage",
"beschlussvorlage": "beschlussvorlage",
"mitteilungsvorlage": "mitteilung",
}
def migrate(db_path: Path = DB_PATH):
conn = sqlite3.connect(str(db_path))
conn.row_factory = sqlite3.Row
# Check if column already exists
cols = [r[1] for r in conn.execute("PRAGMA table_info(ketten)").fetchall()]
if "strang" not in cols:
print("Adding 'strang' column to ketten...")
conn.execute("ALTER TABLE ketten ADD COLUMN strang TEXT")
conn.commit()
print("Column added.")
else:
print("Column 'strang' already exists.")
# Populate strang based on Ursprungs-Vorlage typ
rows = conn.execute("""
SELECT k.id, v.typ as vorlage_typ
FROM ketten k
LEFT JOIN vorlagen v ON k.ursprung_id = v.id
WHERE k.strang IS NULL
""").fetchall()
if not rows:
print("All ketten already have strang set.")
conn.close()
return
print(f"Updating {len(rows)} ketten...")
counts = {}
for r in rows:
vorlage_typ = r["vorlage_typ"] or ""
strang = VORLAGE_TYP_TO_STRANG.get(vorlage_typ, "sonstig")
conn.execute("UPDATE ketten SET strang = ? WHERE id = ?", (strang, r["id"]))
counts[strang] = counts.get(strang, 0) + 1
conn.commit()
conn.close()
print("Done. Counts per strang:")
for strang, count in sorted(counts.items()):
print(f" {strang}: {count}")
if __name__ == "__main__":
db = Path(sys.argv[1]) if len(sys.argv) > 1 else DB_PATH
migrate(db)