#!/usr/bin/env bash
# CHECK -- workqueue-census: the census re-derives from WORK-QUEUE.md AT ITS PIN.
#
# What was wrong (Q147, measured at 50cc5bb in a clean clone): this entry point
# asserted that the committed TSV re-derives from WORK-QUEUE.md as it stands on
# disk. The queue is the one document every lane appends to, so the check graded
# the calendar: rc 0 for one day, then `expected 96 headings, got 97`, rc 1
# forever. It also compared only the (q,title) pairs -- a mutated `status` and a
# mutated `done_implies` both printed PASS, rc 0 (measured at 95b6964).
#
# What it grades now, at the rev the manifest pins:
#   1  the pin resolves and WORK-QUEUE.md at it hashes to the manifest's blob
#   2  the committed TSV header is exact and every row is four cells
#   3  the TSV equals an independent re-derivation, all four columns, doc order
#   4  the markdown render equals the same derivation, row for row
#   5  the manifest's counts (rows, distinct q, reopened q, columns) are measured
#   6  extracted_at_utc parses as UTC and is not older than the pin's commit
# and prints `currency:` -- how far HEAD has moved past the pin -- as an
# advisory that never decides the verdict.
#
#   rc 0  the artifact is true at its pin
#   rc 1  a graded fault
#   rc 2  it could not grade (no repo, no manifest, no rev, unresolvable rev,
#         WORK-QUEUE.md absent at the pin, unreadable artifact)
set -u
HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)" || { echo "CANNOT GRADE: no such directory"; exit 2; }
REPO="$(git -C "$HERE" rev-parse --show-toplevel 2>/dev/null)" || { echo "CANNOT GRADE: $HERE is not in a git repository"; exit 2; }
[ -n "$REPO" ] || { echo "CANNOT GRADE: no git toplevel for $HERE"; exit 2; }

TOOL="$HERE/verify_workqueue_census.py"
[ -f "$TOOL" ] || { echo "CANNOT GRADE: missing $TOOL"; exit 2; }

# The basename is spelled on the invocation line so the Q65 wiring census reads
# this entry point as an invocation and not as prose (same directory, so the
# bare-basename rule applies). Measured: `q63_verify_scan.py --repo .` classes
# this file `wired-invoke` at the landing rev.
python3 "$HERE/verify_workqueue_census.py" --selftest >/dev/null 2>&1 \
  || { echo "FAIL: selftest did not read green"; python3 "$HERE/verify_workqueue_census.py" --selftest | tail -5; exit 1; }
echo "PASS selftest (13 cells)"

python3 "$TOOL" --check --repo "$REPO"
rc=$?
case "$rc" in
  0) echo "CHECK workqueue-census: PASS"; exit 0 ;;
  1) echo "CHECK workqueue-census: FAIL"; exit 1 ;;
  *) echo "CHECK workqueue-census: CANNOT GRADE (rc=$rc)"; exit 2 ;;
esac