#!/bin/sh

set -e
test -n "$VERBOSE" && set -x

if test -f "$1"/gpt4all-lora-quantized.bin.VERSION && test $(cat "$1"/gpt4all-lora-quantized.bin.VERSION) = $2; then
  exit
fi

if command -v git >/dev/null; then
  GIT="tea git"
else
  GIT=git
fi

mkdir -p "$1"
cd "$1"

tea gum format "# preparing for model fetch"
echo  # spacer

URL='magnet:?xt=urn:btih:1F11A9691EE06C18F0040E359361DCA0479BCB5A&dn=gpt4all-lora-quantized.bin&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=udp%3A%2F%2Fopentracker.i2p.rocks%3A6969%2Fannounce'

if test -d trackers; then
  $GIT -C trackers fetch origin
  $GIT -C trackers reset --hard origin/master
else
  $GIT clone "https://github.com/ngosang/trackerslist" trackers
fi

TRACKERS=$(grep -v '^#' "trackers/trackers_all.txt" | tr '\n' ',')

tea gum format <<EoMD
# downloading model
model will be placed: \`$PWD\`
> this may take a a few minutes…
EoMD

CHECK=""
if test -f gpt4all-lora-quantized.bin; then
  # only add this if file exists sine otherwise spurious (non-fatal) error message is shown
  CHECK="--check-integrity"
# else
  # the above torrent is not seeded yet
  #URL="https://s3.amazonaws.com/static.nomic.ai/gpt4all/models/gpt4all-lora-quantized.bin"
fi

tea aria2c \
  --dir=. \
  --seed-time=0 \
  --bt-tracker="$TRACKERS" \
  --summary-interval=0 \
  $CHECK \
  "$URL"

echo $2 > gpt4all-lora-quantized.bin.VERSION

tea gum format "# All done!"
echo  #spacer