#!/usr/bin/env bash
# Everything the 64k extension needs. Explicit --include on every call.
set -uo pipefail; cd "$(dirname "$0")"
export PATH=/root/Adhi/BluTrain/envv/bin:$PATH
say(){ echo "[$(date -u +%H:%M:%S)] $*"; }
mkdir -p checkpoints_680m/rank_0 checkpoints_bluscriptcp/rank_0 \
         Data_Loader/Data/b2_8192_16384 Data_Loader/Data/evalsrc
R=unparallelled/BluScriptCP; RD=unparallelled/BluScriptCP-data

say "1/5 p1final (the parent -- best model we have, 95/90/82 at x64)"
hf download $R --quiet --include 'checkpoints/p1_680m_step1200_rank0.ckpt' --local-dir dlp || exit 1
mv -f dlp/checkpoints/p1_680m_step1200_rank0.ckpt checkpoints_bluscriptcp/rank_0/p1final.ckpt; rm -rf dlp

say "2/5 base680 (the control -- without it we cannot read the result)"
hf download navingv/varybatch --quiet --include 'varybatch.ckpt' --local-dir dlv || exit 1
mv -f dlv/varybatch.ckpt checkpoints_680m/rank_0/; rm -rf dlv
ln -sf "$PWD/checkpoints_680m/rank_0/varybatch.ckpt" checkpoints_bluscriptcp/rank_0/varybatch.ckpt

say "3/5 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 dlh || exit 1
mv -f dlh/cp_data_by_length/b2_8192_16384/val_shard_00000.bin Data_Loader/Data/b2_8192_16384/; rm -rf dlh

say "4/5 long buckets for a 64k window"
get(){ 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 dld || return 1; done; }
get b5_65536_131072 0 8 || exit 1     # docs >= the 64k window: contiguous
get b4_32768_65536  0 5 || exit 1
get b3_16384_32768  0 3 || exit 1
get b1_4096_8192    0 2 || exit 1
for d in dld/cp_data_by_length/*; do n=$(basename "$d"); mkdir -p "src64/$n"
  for f in "$d"/*.bin; do [ -e "$f" ] && mv -n "$f" "src64/$n/"; done; done
rm -rf dld

say "5/5 loader feed (trainer builds a data loader even for pure generation)"
cp -f src64/b1_4096_8192/train_shard_00000.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 "=== sizes ==="
stat -c '  %s  %n' 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 "expected: p1final 5141244514 | varybatch 1362674564 | haystack 199754694"
du -sh src64/* ; df -h . | tail -1
say "DL_DONE"