#!/usr/bin/env bash
# Download the frank-small payload for llama.cpp on the RTX 3090:
# bartowski/MiMo-V2.6-Distill-Qwen-9B-GGUF:Q5_K_M plus its vision projector
# (the GGUF carries no `v.*` tensors — the tower lives only in the mmproj, so
# without this file the endpoint is text-only by construction). Public repo —
# no auth header, and never a token on the command line (it is world-readable
# in /proc/<pid>/cmdline).
#
# Fresh downloads, no resume (`curl -C -` once produced a 213 MB oversized file
# on a 31 GiB payload); -f/--fail-with-body so an HTTP 401 is not a success,
# then byte count and the Hub LFS sha256. Idempotent: complete files are
# skipped.
#
# The Q6_K file this endpoint served until 2026-10-01 night stays on disk as
# the rollback target (7793710624 B, LFS oid
# ef96d05a2ddf2cbb450d1af1ac3860ec769d3575bafa70692ee5609bda3fad7d) — re-fetch
# it from the same repo with the same recipe if it is ever needed again.
#
# Usage:
#   scripts/download-frank-small.sh [DEST_DIR] [--verify-only]
set -euo pipefail

REPO="bartowski/MiMo-V2.6-Distill-Qwen-9B-GGUF"
BASE="https://huggingface.co/${REPO}/resolve/main"

DEST=""
VERIFY_ONLY=0
for arg in "$@"; do
    case "$arg" in
        --verify-only) VERIFY_ONLY=1 ;;
        *) DEST="$arg" ;;
    esac
done
DEST="${DEST:-/home/dank/models/MiMo-Q5KM}"

# name bytes sha256
FILES=(
  "MiMo-V2.6-Distill-Qwen-9B-Q5_K_M.gguf 6876124704 04cf46f2b5584ef922697d6c063f94879434fb86c467f1a09e52daf0cddaf35f"
  "mmproj-MiMo-V2.6-Distill-Qwen-9B-f16.gguf 918166048 ff348f3180a63188aa7285db85f550fe38acb61dd013c599eb8bad08d2cc2576"
)

mkdir -p "$DEST"
status=0
for entry in "${FILES[@]}"; do
  read -r name size sha <<<"$entry"
  f="$DEST/$name"
  have=0
  if [[ -f "$f" ]] && [[ "$(stat -c%s "$f")" == "$size" ]]; then
    if sha256sum -c --quiet <(printf '%s  %s\n' "$sha" "$f"); then
      have=1
    fi
  fi
  if (( have )); then
    echo "OK        $name"
    continue
  fi
  if (( VERIFY_ONLY )); then
    echo "MISSING   $name"
    status=1
    continue
  fi
  echo "FETCHING  $name"
  tmp="$f.part"
  curl -fsSL --fail-with-body -o "$tmp" "$BASE/$name"
  mv "$tmp" "$f"
  if [[ "$(stat -c%s "$f")" != "$size" ]]; then
    echo "SIZE FAIL $name ($(stat -c%s "$f") != $size)"
    status=1
    continue
  fi
  if ! sha256sum -c --quiet <(printf '%s  %s\n' "$sha" "$f"); then
    echo "SHA FAIL  $name"
    status=1
    continue
  fi
  echo "VERIFIED  $name"
done
if (( status == 0 )); then
  echo "DOWNLOAD_DONE $DEST"
else
  echo "DOWNLOAD_FAILED $DEST" >&2
fi
exit "$status"