"""Summarize VWP2 folder on drive 3 — size, newest content, file type breakdown."""
import csv
from collections import defaultdict

WIZ = 'clients/valleywide/app-modernization/WizTree_20260516174356.csv'
# Use raw string to avoid \v -> vertical tab interpretation
SEARCH_FOLDER = r'\97-server-g-drive\g$ 2024-04-10 21;13;45\vwp2\\'.lower()

folder_sizes = {}
files_by_ext = defaultdict(list)
all_files = []

prefix = SEARCH_FOLDER.rstrip('\\')
print(f'DEBUG prefix: {prefix!r}')

with open(WIZ, encoding='utf-8-sig', errors='replace') as f:
    r = csv.reader(f); next(r); next(r)
    rows_checked = 0
    for row in r:
        if not row or len(row) < 4:
            continue
        rows_checked += 1
        p = row[0]; pl = p.lower()
        if prefix not in pl:
            continue
        try:
            sz = int(row[1])
        except (ValueError, IndexError):
            continue
        if p.endswith('\\'):
            try:
                files = int(row[5]); folders = int(row[6])
            except (ValueError, IndexError):
                files, folders = 0, 0
            folder_sizes[p] = (sz, files, folders, row[3])
        else:
            ext = p.rsplit('.', 1)[-1].lower() if '.' in p.rsplit('\\', 1)[-1] else '(none)'
            files_by_ext[ext].append((row[3], sz, p))
            all_files.append((row[3], sz, p, ext))

# Top-level VWP2 folder
top = next((k for k in folder_sizes if k.lower().rstrip('\\').endswith('\\vwp2')), None)
if top:
    sz, files, folders, mod = folder_sizes[top]
    print(f'=== {top} ===')
    print(f'   {sz/1024/1024/1024:.2f} GB, {files:,} files, {folders} subfolders, modified {mod}')
print()

print('=== File type breakdown ===')
totals = []
for ext, items in files_by_ext.items():
    total_mb = sum(s for _,s,_ in items) / 1024 / 1024
    totals.append((total_mb, ext, len(items)))
for total_mb, ext, n in sorted(totals, reverse=True)[:15]:
    print(f'   .{ext:<8} {n:>5} files, {total_mb:>10.1f} MB')
print()

print('=== Newest 30 files in \\VWP2\\ tree ===')
all_files.sort(reverse=True)
for mod, sz, p, ext in all_files[:30]:
    print(f'   {mod:<19} {sz/1024/1024:>8.1f} MB  {p}')

print()
print('=== Top-level subfolders of \\VWP2\\ ===')
for path, (sz, files, folders, mod) in sorted(folder_sizes.items(), key=lambda x: -x[1][0]):
    if path.lower().rstrip('\\').endswith('\\vwp2'):
        continue
    rel = path.lower().split('\\vwp2\\', 1)[1].rstrip('\\')
    if '\\' in rel:
        continue  # only direct children
    print(f'   {sz/1024/1024:>8.1f} MB  {files:>5} files  {mod:<19}  {path}')