#!/usr/bin/env python3
# Import-free verifier for top-python-repos-2026-10-26.
# Exit code 0 = artifact correct, nonzero = wrong.
import csv
import json
import sys

BASE = "/root/troupe-standup/wizard-work/ledger"
CSV_PATH = BASE + "/top-python-repos-2026-10-26.csv"
JSON_PATH = BASE + "/top-python-repos-2026-10-26.json"
HEADER = ["rank", "name", "owner", "description", "stars", "forks", "html_url", "language"]


def fail(msg):
    print("CHECK FAIL: " + msg)
    sys.exit(1)


try:
    with open(JSON_PATH) as f:
        payload = json.load(f)
except Exception as e:
    fail("cannot read json: %r" % e)

items = payload.get("items")
if not items:
    fail("json has no items")

# Expected order: stars desc, name asc
expected = sorted(items, key=lambda r: (-int(r.get("stargazers_count") or 0), r.get("name", "")))
expected_rows = []
for i, r in enumerate(expected, 1):
    owner = r.get("owner") or {}
    expected_rows.append({
        "rank": str(i),
        "name": r.get("name", ""),
        "owner": owner.get("login", "") if isinstance(owner, dict) else "",
        "description": r.get("description") or "",
        "stars": str(int(r.get("stargazers_count") or 0)),
        "forks": str(int(r.get("forks_count") or 0)),
        "html_url": r.get("html_url", ""),
        "language": r.get("language") or "",
    })

try:
    with open(CSV_PATH, newline="") as f:
        rows = list(csv.DictReader(f))
except Exception as e:
    fail("cannot read csv: %r" % e)

if not rows:
    fail("csv is empty")

if list(rows[0].keys()) != HEADER:
    fail("header mismatch: %r" % list(rows[0].keys()))

if len(rows) != 50:
    fail("row count %d != 50" % len(rows))

for i, (act, exp) in enumerate(zip(rows, expected_rows), 1):
    if act != exp:
        fail("row %d mismatch: %r != %r" % (i, act, exp))

stars = [int(r["stars"]) for r in rows]
if any(a < b for a, b in zip(stars, stars[1:])):
    fail("stars not non-increasing")

ranks = [int(r["rank"]) for r in rows]
if ranks != list(range(1, 51)):
    fail("ranks not 1..50")

print("CHECK PASS: %d rows | top=%s/%s stars=%s" % (
    len(rows), rows[0]["owner"], rows[0]["name"], rows[0]["stars"]))