#!/usr/bin/env python3
"""Verify a standup draft contains required sections with at least one bullet each.

Required sections (case-insensitive headings):
  Yesterday, Today, Blockers

Exit codes:
  0  all required sections present and non-empty
  1  one or more sections missing or empty
  2  bad invocation or unreadable file
"""
import re
import sys

REQUIRED = ["yesterday", "today", "blockers"]


def verify(path: str):
    try:
        with open(path, "r", encoding="utf-8") as f:
            text = f.read()
    except OSError as exc:
        return 2, [f"cannot read file: {exc}"]

    lower = text.lower()
    faults = []
    for section in REQUIRED:
        # Match heading line exactly, allowing optional ATX markers (##, ###, etc.)
        if not re.search(rf"^#{{0,6}}\s*{re.escape(section)}\s*$", lower, re.MULTILINE):
            faults.append(f"missing section: {section}")
            continue
        # Extract up to 400 chars after the heading
        idx = lower.find(section)
        chunk = lower[idx: idx + 400]
        if not re.search(r"^\s*[-*]\s+.+", chunk, re.MULTILINE):
            faults.append(f"section {section} has no bullets")

    return (1 if faults else 0), faults


def main() -> int:
    if len(sys.argv) < 2:
        print("usage: verify_standup_draft.py <file>", file=sys.stderr)
        return 2

    rc, faults = verify(sys.argv[1])
    if rc == 0:
        print("VERDICT: PASS")
    elif rc == 1:
        print("VERDICT: FAIL")
        for f in faults:
            print(f"  - {f}")
    else:
        print("VERDICT: UNGRADABLE")
        for f in faults:
            print(f"  - {f}")
    return rc


if __name__ == "__main__":
    raise SystemExit(main())