#!/usr/bin/env bash
# reproduce.sh — ONE COMMAND. Proves every instrument, records the calibration,
# re-runs every cycle, verifies every artifact against its hash.
#
# Capturing evidence is not enough. If a stranger cannot regenerate the numbers
# in one command, the record is testimony. This is the command.
#
#   usage: ./docs/experiments/reproduce.sh [cycle-glob]
set -uo pipefail
cd "$(git rev-parse --show-toplevel)" || exit 2
E="docs/experiments"; I="$E/instruments/instrument"; CAP="./tools/evidence/capture.sh"
STAMP=$(date -u +%Y%m%dT%H%M%SZ); FAIL=0
hdr(){ printf '\n\033[1m%s\033[0m\n' "$1"; }

hdr "1. INSTRUMENTS — proven before anything is measured"
for p in "$I"/*/prove.sh; do
  [ -e "$p" ] || continue
  name=$(basename "$(dirname "$p")")
  if "$p" >/dev/null 2>&1; then printf '  ok    %-16s proven\n' "$name"
  else printf '  FAIL  %-16s NOT PROVEN — no measurement below is valid\n' "$name"; FAIL=$((FAIL+1)); fi
done
[ "$FAIL" -eq 0 ] || { printf '\n  ABORT: an instrument is unproven. Nothing measured today is reportable.\n'; exit 1; }

hdr "2. CALIBRATION — recorded, and stamped into every cycle that runs below"
CALFILE="$E/instruments/CALIBRATION-$STAMP.txt"
{ printf 'calibration run\t%s\n' "$STAMP"
  printf 'commit\t%s\n' "$(git rev-parse HEAD)"
  printf 'tree\t%s\n'   "$(test -n "$(git status --porcelain)" && echo dirty || echo clean)"
  printf 'cloc\t%s\n'   "$(cloc --version 2>/dev/null || echo ABSENT)"
  printf 'matplotlib\t%s\n' "$(python3 -c 'import matplotlib;print(matplotlib.__version__)' 2>/dev/null || echo ABSENT)"
  printf 'cc\t%s\n'     "$(cc --version 2>&1|head -1)"
  for p in "$I"/*/prove.sh; do [ -e "$p" ] || continue
    printf '\n--- %s ---\n' "$(basename "$(dirname "$p")")"; "$p" 2>&1; done
} > "$CALFILE"
printf '  %s\n' "$CALFILE"
grep -c '^  ok' "$CALFILE" | xargs printf '  %s calibration checks passed\n'

hdr "3. CYCLES — each re-run, each stamped with the calibration in effect"
GLOB="${1:-*}"; ran=0; miss=0
# Cycles live at docs/v{1,2}/experiments/cycles/. The previous glob was
# $E/v*/cycles/ and matched 1 of 29, then printed REPRODUCED.
for m in docs/v*/experiments/cycles/$GLOB/measure.sh; do
  [ -e "$m" ] || continue
  d=$(dirname "$m"); name=$(basename "$d")
  mkdir -p "$d/evidence"
  cp "$CALFILE" "$d/evidence/CALIBRATION.txt"     # <- the cycle SHOWS its calibration
  if $CAP "$d/evidence" rerun -- "$m" >/dev/null 2>&1; then printf '  ok    %-42s re-run\n' "$name"
  else printf '  FAIL  %-42s re-run failed\n' "$name"; FAIL=$((FAIL+1)); fi
  ran=$((ran+1))
done
total=$(ls docs/v1/experiments/cycles/*.md docs/v2/experiments/cycles/*.md 2>/dev/null | grep -vc INDEX)
miss=$((total - ran))
printf '  %s cycle(s) re-run\n' "$ran"
if [ "$miss" -gt 0 ]; then
  printf '  %s of %s cycle(s) have NO measure.sh and are NOT REPRODUCIBLE.\n' "$miss" "$total"
  printf '  A record that reproduces %s/%s of itself has not been reproduced.\n' "$ran" "$total"
  FAIL=$((FAIL+1))
fi

hdr "4. VERIFY — every artifact re-hashed against its manifest"
for d in $(find docs -name MANIFEST.tsv -exec dirname {} \; | sort -u); do
  ./tools/evidence/verify-manifest.sh "$d" || FAIL=$((FAIL+1))
done
for d in $E/v*/cycles/*/evidence $I/*/evidence; do
  [ -f "$d/MANIFEST.tsv" ] || continue
  ./tools/evidence/verify-manifest.sh "$(dirname "$d")" >/dev/null 2>&1 || true
done
./tools/evidence/verify-notebook.sh || FAIL=$((FAIL+1))

hdr "RESULT"
[ "$FAIL" -eq 0 ] && echo "  REPRODUCED — instruments proven, calibration recorded, cycles re-run, artifacts verified." \
                  || echo "  NOT REPRODUCED — $FAIL failure(s) above."
exit "$FAIL"