download-repo-get-weights.sh

#!/bin/bash

# get repo from command line
repo=$1

# parentWeight, default to 1
parentWeighting=${2:-1}

# if no repo, exit
if [ -z "$repo" ]; then
  echo "No repo specified"
  exit 1
fi

# clone repo into a temporary directory
tmp=$(mktemp -d)
cd $tmp
git clone --filter=tree:0 $repo .

# Get the list of authors and commit counts
authors=$(git log --format='%ae' | sort | uniq -c | sort -nr)

# Get the total weight
total=$(echo "$authors" | awk '{ sum += $1 } END { print sum }')

# Generate a traceId, a uuid, for this kudos transaction
traceId=$(uuidgen | xxd -r -p | base64 | sed 's/+/-/g; s/\//_/g; s/=//g')

# Loop through each author and get their GitHub username
while read -r line; do
  count=$(echo "$line" | awk '{ print $1 }')
  email=$(echo "$line" | awk '{ print $2 }')
  # username=$(curl -s "https://api.github.com/search/users?q=$email+in:email" | jq -r '.items[0].login')
  
  # Calculate the weight for this author
  weight=$(echo "scale=5; $count / $total * $parentWeighting" | bc)
  weight=$(printf "%.5f" $weight)


  # Generate a unique ID for this kudos
  id=$(uuidgen | xxd -r -p | base64 | sed 's/+/-/g; s/\//_/g; s/=//g')

  # Get the current timestamp in UTC
  ts=$(date -u +"%Y-%m-%dT%H:%M:%SZ")

  # Output the kudos information in JSON format
  # {"identifier":"did:kudos:email:$email","id":"XR8C4DfXjRTWykQF3xMtF2","ts":"2023-06-28T16:08:04Z","weight":1,"traceId":"XR7whJG3zbH5jFbdJpJjv8"}
  echo "{\"identifier\":\"did:kudos:email:$email\",\"id\":\"$id\",\"ts\":\"$ts\",\"weight\":$weight,\"traceId\":\"$traceId\"}"
done <<< "$authors"

# remove temporary directory
rm -rf $tmp

This one is similar to https://gist.github.com/mankins/042d58004078e716b4fec9acfac52bb8 but it takes a repo as an argument:

./download-repo-get-weights.sh https://github.com/gtanner/qrcode-terminal.git

And optionally a weighting multiplier:

./download-repo-get-weights.sh https://github.com/gtanner/qrcode-terminal.git .5

(which would produce weights half as strong)

% ./download-repo-get-weights.sh https://github.com/gtanner/qrcode-terminal.git

Cloning into '.'...
remote: Enumerating objects: 52, done.
remote: Total 52 (delta 0), reused 0 (delta 0), pack-reused 52
Receiving objects: 100% (52/52), 9.55 KiB | 9.55 MiB/s, done.
Resolving deltas: 100% (2/2), done.
remote: Enumerating objects: 7, done.
remote: Counting objects: 100% (1/1), done.
remote: Total 7 (delta 0), reused 0 (delta 0), pack-reused 6
Receiving objects: 100% (7/7), 1.01 KiB | 1.01 MiB/s, done.
remote: Enumerating objects: 22, done.
remote: Counting objects: 100% (8/8), done.
remote: Compressing objects: 100% (8/8), done.
remote: Total 22 (delta 0), reused 0 (delta 0), pack-reused 14
Receiving objects: 100% (22/22), 50.97 KiB | 8.49 MiB/s, done.
{"identifier":"did:kudos:email:michael@michaelbrooks.ca","id":"b-LpWUvmSZaxNIIkt-IxHA","ts":"2023-06-29T05:53:28Z","weight":0.53846,"traceId":"nuHTdSBXTgex61Dct13icg"}
{"identifier":"did:kudos:email:gtanner@gmail.com","id":"pYr0Z-YqQgSjWdm8XYfbtA","ts":"2023-06-29T05:53:28Z","weight":0.36538,"traceId":"nuHTdSBXTgex61Dct13icg"}
{"identifier":"did:kudos:email:spiro@mobify.com","id":"9XPOtl1iSJOwVV-Auag6Iw","ts":"2023-06-29T05:53:28Z","weight":0.03846,"traceId":"nuHTdSBXTgex61Dct13icg"}
{"identifier":"did:kudos:email:konrad.blum@gmail.com","id":"-PXoe1uUSI2xCNIL2YVXYw","ts":"2023-06-29T05:53:28Z","weight":0.01923,"traceId":"nuHTdSBXTgex61Dct13icg"}
{"identifier":"did:kudos:email:kelvingu616@gmail.com","id":"m3gLV1EtQDCMdWLkImrTIQ","ts":"2023-06-29T05:53:28Z","weight":0.01923,"traceId":"nuHTdSBXTgex61Dct13icg"}
{"identifier":"did:kudos:email:frost@ceri.se","id":"_VJQZy4ISLyTqT5J9q6p9Q","ts":"2023-06-29T05:53:28Z","weight":0.01923,"traceId":"nuHTdSBXTgex61Dct13icg"}
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