# -*- coding: utf-8 -*-
"""Spring Boot 4 / Jackson 3 迁移：包名批量替换。

Jackson 3 把 com.fasterxml.jackson.databind|core 迁到 tools.jackson.*，
但注解（com.fasterxml.jackson.annotation）为向后兼容保持在原包，不能动。

用法：python tools/migrate_jackson3.py [--dry]
"""
import sys

from _root import ROOT

SRC = ROOT / "yoshop-java/src/main/java"
RULES = [
    ("com.fasterxml.jackson.databind", "tools.jackson.databind"),
    ("com.fasterxml.jackson.core", "tools.jackson.core"),
]

dry = "--dry" in sys.argv
changed = []

for f in SRC.rglob("*.java"):
    text = f.read_text(encoding="utf-8")
    new = text
    for old, rep in RULES:
        new = new.replace(old, rep)
    if new != text:
        changed.append(f)
        if not dry:
            f.write_text(new, encoding="utf-8")

print("%s %d files" % ("would change" if dry else "changed", len(changed)))
for f in changed[:10]:
    print("  ", f.relative_to(ROOT))