contributions-for-user.sh

#!/bin/bash

set -e -o pipefail

repo_root=$(dirname "$(cd "$( dirname "${BASH_SOURCE[0]}" )/.." && pwd)")

pushd "${repo_root}/toc/working-groups" >/dev/null

USERNAME=$1
shift || true
WORKING_GROUP="$*"

echo "Parsing working group metadata..."
TOC_JSON=$(${repo_root}/toc/working-groups/parsable-working-groups.sh)

declare -a WORKING_GROUPS
IFS=$'\n'
WORKING_GROUPS=($(echo "${TOC_JSON}" | jq -r '.[].name'))

list_working_groups() {
  for wg in "${WORKING_GROUPS[@]}"; do
    echo "- ${wg}"
  done
}

usage_checks() {
  if [[ ! -e $(which gh) ]]; then
    echo 'The `gh` cli is required for this script' >&2
    exit 1
  fi

  if gist_url=$(echo "test" | gh gist create -d test -f test - 2>/dev/null); then
    gh gist delete "${gist_url}" >/dev/null 2>&1
  else 
    echo 'Please login to GitHub with the `gh` cli using credentials with permissions to create gists' >&2
    exit 1
  fi

  if [[ -z "${USERNAME}" ]]; then
    echo "Usage: contributions-for-user.sh <github-username> <working group name>" >&2
    echo "Where working group name is one of:" >&2
    list_working_groups >&2
    exit 1
  fi

  for wg in "${WORKING_GROUPS[@]}"; do
    if [[ "${wg}" == "${WORKING_GROUP}" ]]; then
      match=1
      break
    fi
  done
  if [[ "${match}" != 1 ]]; then
    echo "Working group name must be one of:" >&2
    list_working_groups >&2
    exit 1
  fi
}

find_commits_for_repo() {
  local user=$1
  local repo=$2

  if commits=$(gh api --paginate "repos/${repo}/commits?author=${user}&per_page=100" 2>/dev/null); then
    echo "${commits}" |  jq -r '.[] | "- " + .commit.author.date + ": [" + (.commit.message | split("\n"))[0] + "](" + .html_url + ")"'
  fi
  if commits=$(gh api --paginate "repos/${repo}/commits?committer=${user}&per_page=100" 2>/dev/null); then
    echo "${commits}" |  jq -r '.[] | "- " + .commit.committer.date + ": [" + (.commit.message | split("\n"))[0] + "](" + .html_url + ")"'
  fi
}

find_prs_for_repo() {
  local user=$1
  local repo=$2
  
  echo "${EVENTS_JSON}" | jq -r --arg repo "${repo}" '.[] | select([.type] | inside(["PullRequestReviewEvent"])) | select(.repo.name == $repo) | "- " + .payload.pull_request.created_at + ": [" +.payload.pull_request.title + "](" + .payload.pull_request.html_url + ")"'
  echo "${EVENTS_JSON}" | jq -r --arg user "${user}" --arg repo "${repo}" '.[] | select([.type] | inside(["PullRequestReviewCommentEvent"])) | select(.repo.name == $repo) | select(.payload.pull_request.user.login != $user) | "- " + .payload.pull_request.created_at + ": [" +.payload.pull_request.title + "](" + .payload.pull_request.html_url + ")"'
  
}

find_issues_for_repo() {
  local user=$1
  local repo=$2
  
  if issues=$(gh api --paginate "repos/${repo}/issues?creator=${user}&state=all" 2>/dev/null); then
    echo "${issues}" | jq -r '.[] | "- " + .created_at + ": [" + .title + "](" + .html_url + ")"'
  fi
  if issues=$(gh api --paginate "repos/${repo}/issues?mentioned=${user}&state=all" 2>/dev/null); then
    echo "${issues}" | jq -r '.[] | "- " + .created_at + ": [" + .title + "](" + .html_url + ")"'
  fi
  echo "${EVENTS_JSON}" | jq -r --arg user "${user}" --arg repo "${repo}" '.[] | select([.type] | inside(["IssueCommentEvent"])) | select(.repo.name == $repo) | select(.payload.issue.user.login != $user) | "- " + .payload.issue.created_at + ": [" +.payload.issue.title + "](" + .payload.issue.html_url + ")"'
}

  usage_checks
  set -u

  echo "Gathering GH events..."
  EVENTS_JSON=$(gh api --paginate "users/${USERNAME}/events?per_page=100")

  declare -a areas
  areas=($(echo "${TOC_JSON}" | jq --arg wg_name "${WORKING_GROUP}" -r '.[] | select(.name == $wg_name) | .areas[].name'))
  for area in "${areas[@]}"; do
    echo "Gathering contributions for the '${WORKING_GROUP}: ${area}' area..."
    uri_safe_file=$(echo "${wg} - ${area}.md" | jq  -sRr '@uri')
    gist_url=$( (
    echo "# ${WORKING_GROUP}: ${area} Contributions"
    declare -a repos
    repos=($(echo "${TOC_JSON}" | jq -r --arg wg_name "${WORKING_GROUP}" --arg area "${area}" '.[] | select(.name == $wg_name) | .areas[] | select(.name == $area) | .repositories[]'))
    echo "### PRs Commented on/Reviewed:"
    for repo in "${repos[@]}"; do
      find_prs_for_repo "${USERNAME}" "${repo}"
    done | sort -u
    echo "### Issues that may be relevant:"
    for repo in "${repos[@]}"; do
      find_issues_for_repo  "${USERNAME}" "${repo}"
    done | sort -u
    echo "### Code contributions:"
    for repo in "${repos[@]}"; do
        find_commits_for_repo "${USERNAME}" "${repo}" 
    done | sort -u
    echo
    ) | gh gist create -d "${USERNAME}'s Possible Contributions to ${WORKING_GROUP} - ${area}" -f "${uri_safe_file}" - 2>/dev/null)
    echo "Contributions have been summarized at ${gist_url}"
  done