# -*- coding: utf-8 -*-
"""驼峰迁移补充：Params/本地工具方法的 key 字符串参数转驼峰。
覆盖形如 Params.intOrNull(data, "category_id")、firstInt(params, "user_id", "userId") 的调用。
第一参数限定 params/form/data/body/all/values/query/request 等变量名，避免误伤。
"""
import re
from pathlib import Path
from _root import ROOT

SRC = ROOT / "yoshop-java" / "src" / "main" / "java"
SNAKE = re.compile(r'^[a-z]+(_[a-z0-9]+)+$')

CALL = re.compile(
    r'((?:\w+\.)?\w+\((?:params|form|data|body|all|values|query|request|order|\w*Map),\s*")([a-z0-9_]+)(")')


def to_camel(s):
    return re.sub(r'_([a-z0-9])', lambda m: m.group(1).upper(), s)


changed = []
n = 0
for f in sorted(SRC.rglob("*.java")):
    text = f.read_text(encoding="utf-8")
    orig = text

    def repl(m):
        global n
        key = m.group(2)
        if not SNAKE.match(key):
            return m.group(0)
        n += 1
        return m.group(1) + to_camel(key) + m.group(3)

    text = CALL.sub(repl, text)
    if text != orig:
        f.write_text(text, encoding="utf-8")
        changed.append(str(f.relative_to(SRC)))

print("改动 %d 个文件、%d 处" % (len(changed), n))
for c in changed:
    print("  ", c)