# -*- coding: utf-8 -*-
"""
删除 A类(186) + B1类(36) 共 222 个已验证重复旧文件。
铁律：仅当「新结构副本存在」时才删除旧文件，否则跳过并报错，绝不盲删。
C类(39) 与 b2(9) 不在此脚本处理范围。
"""
import json, os

ROOT = "docs"

d = json.load(open('docs_cmp_result2.json', encoding='utf-8'))
content_dup = d['content_dup']      # [old, new]
name_diff = d['name_diff']          # [old, om, os, new, nm, ns]

# b2 旧路径集合（已抢救，不可删）
b3 = json.load(open('docs_cmp_result3.json', encoding='utf-8'))
b2_old = set()
for row in b3.get('b2', []):
    b2_old.add(row[0])

def norm(p):
    return os.path.normpath(os.path.join(ROOT, p))

delete_list = []   # (old_abs, reason, new_abs)
# A类
for old, new in content_dup:
    delete_list.append((norm(old), 'A-content_dup', norm(new)))
# B1类 = name_diff 中不在 b2 的
b1_count = 0
for row in name_diff:
    old, new = row[0], row[3]
    if old in b2_old:
        continue
    delete_list.append((norm(old), 'B1-name_diff', norm(new)))
    b1_count += 1

print("待删总数:", len(delete_list), "(A=%d, B1=%d)" % (len(content_dup), b1_count))

deleted, skipped = [], []
for old_abs, reason, new_abs in delete_list:
    if not os.path.isfile(new_abs):
        skipped.append((old_abs, "NEW_MISSING:" + new_abs))
        continue
    if not os.path.isfile(old_abs):
        skipped.append((old_abs, "OLD_MISSING"))
        continue
    try:
        os.remove(old_abs)
        deleted.append((old_abs, reason))
    except Exception as e:
        skipped.append((old_abs, "ERR:" + str(e)))

print("DELETED:", len(deleted))
print("SKIPPED:", len(skipped))
for p, r in skipped:
    print("  SKIP", p, "::", r)