#!/usr/bin/env bash
# CPU/IO only. Safe to run while someone else has the GPUs.
set -uo pipefail; cd "$(dirname "$0")"
export PATH=/root/Adhi/BluTrain/envv/bin:$PATH
say(){ echo "[$(date -u +%H:%M:%S)] $*"; }
R1=unparallelled/BluScriptCP; RD=unparallelled/BluScriptCP-data
mkdir -p checkpoints_680m/rank_0 checkpoints_bluscriptcp/rank_0 \
         Data_Loader/Data/b2_8192_16384 Data_Loader/Data/evalsrc Tests/bluscriptcp/qa_data

say "1/6 checkpoints: t64 (parent) + p1final + base680 (eval controls)"
hf download $R1 --quiet --include 'checkpoints/t64_680m_step1200_rank0.ckpt' --local-dir d1 && \
  mv -f d1/checkpoints/*.ckpt checkpoints_bluscriptcp/rank_0/t64.ckpt
hf download $R1 --quiet --include 'checkpoints/p1_680m_step1200_rank0.ckpt' --local-dir d2 && \
  mv -f d2/checkpoints/*.ckpt checkpoints_bluscriptcp/rank_0/p1final.ckpt
hf download navingv/varybatch --quiet --include 'varybatch.ckpt' --local-dir d3 && \
  mv -f d3/varybatch.ckpt checkpoints_680m/rank_0/
ln -sf "$PWD/checkpoints_680m/rank_0/varybatch.ckpt" checkpoints_bluscriptcp/rank_0/varybatch.ckpt

say "2/6 haystack -- MUST be byte-identical to every prior eval"
hf download $RD --repo-type dataset --quiet \
  --include 'cp_data_by_length/b2_8192_16384/val_shard_00000.bin' --local-dir d4 && \
  mv -f d4/cp_data_by_length/b2_8192_16384/*.bin Data_Loader/Data/b2_8192_16384/

say "3/6 buckets -- FRESH shard ranges, disjoint from what the 64k run consumed"
for spec in "b6_gte_131072 0 0" "b5_65536_131072 4 8" "b4_32768_65536 2 5" "b3_16384_32768 1 3" "b1_4096_8192 1 2"; do
  set -- $spec
  for i in $(seq -f '%05g' $2 $3); do
    hf download $RD --repo-type dataset --quiet \
      --include "cp_data_by_length/$1/train_shard_$i.bin" --local-dir d5 || true
  done
done
for d in d5/cp_data_by_length/*; do n=$(basename "$d"); mkdir -p "src128/$n"
  for f in "$d"/*.bin; do [ -e "$f" ] && mv -n "$f" "src128/$n/"; done; done

say "4/6 loader feed (trainer builds a loader even for pure generation)"
cp -f src128/b1_4096_8192/train_shard_00001.bin Data_Loader/Data/evalsrc/ 2>/dev/null
cp -f Data_Loader/Data/b2_8192_16384/val_shard_00000.bin Data_Loader/Data/evalsrc/

say "5/6 scripts + RULER QA data"
hf download $R1 --quiet --include 'data/ruler_qa/*' --local-dir d6 && \
  mv -f d6/data/ruler_qa/*.parquet Tests/bluscriptcp/qa_data/
hf download $R1 --quiet --include 'scripts/longeval_gen.py' --local-dir d7 && \
  cp -f d7/scripts/longeval_gen.py Tests/bluscriptcp/
for s in t128_train.sh run_ruler.sh mix_buckets.py run_longeval.sh longeval_score.py; do
  hf download $R1 --quiet --include "scripts/$s" --local-dir d8 2>/dev/null || true; done
cp -f d8/scripts/t128_train.sh d8/scripts/run_ruler.sh d8/scripts/mix_buckets.py d8/scripts/run_longeval.sh . 2>/dev/null
cp -f d8/scripts/longeval_score.py Tests/bluscriptcp/ 2>/dev/null
chmod +x *.sh 2>/dev/null
rm -rf d1 d2 d3 d4 d5 d6 d7 d8

say "6/6 sizes"
stat -c '  %s  %n' checkpoints_bluscriptcp/rank_0/t64.ckpt \
  checkpoints_bluscriptcp/rank_0/p1final.ckpt \
  checkpoints_680m/rank_0/varybatch.ckpt \
  Data_Loader/Data/b2_8192_16384/val_shard_00000.bin 2>/dev/null
say "expect: t64 2423335522 | p1final 5141244514 | varybatch 1362674564 | haystack 199754694"
du -sh src128/* 2>/dev/null; df -h . | tail -1
say "DL_DONE"