entrypoint.sh

#!/bin/bash

# Switch to working directory
cd /gource

# Start Xvfb
printf "> Starting Xvfb "
Xvfb :99 -ac -screen 0 $XVFB_WHD -nolisten tcp &> ./logs/xvfb.log &
xvfb_pid="$!"

# possible race condition waiting for Xvfb.
sleep 5

# Check if git repo exist, else download it from GIT_URL
printf "\n>\n> Repository check \n"
if [ -z "$(ls -A ./git_repos)" ]; then
  printf "> \tUsing single repo \n"

	# Check if git repo needs to be cloned
  if [ -z "$(ls -A ./git_repo)" ]; then
    # Check if GIT_URL is a local folder
    if [[ ${INPUT_GIT_URL:0:2} == "./" ]]; then
      printf "> \tUsing local repository: $(sed "s/.\//\/github\/workspace\/&/g" <<< ${INPUT_GIT_URL})"
      # The action working directory im ounted as /github/workspace
      cp -rf $(sed "s/.\//\/github\/workspace\/&/g" <<< ${INPUT_GIT_URL}) ./git_repo
    else
      # Check if git repo need token
      if [ "${INPUT_GIT_TOKEN}" == "" ]; then
        printf "> \tCloning from public: ${INPUT_GIT_URL}"
        timeout 25s git clone ${INPUT_GIT_URL} ./git_repo >/dev/null 2>&1
      else
        printf "> \tCloning from private: ${INPUT_GIT_URL}"
        # Add git token to access private repository
        timeout 25s git clone $(sed "s/git/${GIT_TOKEN}\@&/g" <<< ${INPUT_GIT_URL}) ./git_repo >/dev/null 2>&1
      fi
    fi
  fi


  if [ -z "$(ls -A ./git_repo)" ]; then
    # // TODO: Add multi repo support
    printf "\n\nERROR: No Git repository found"
    exit 2
  fi

	printf "\n> \tUsing volume mounted git repo"
	gource --output-custom-log ./development.log ./git_repo >/dev/null 2>&1
else
  # // TODO: Add multi repo support
	printf "\n\nERROR: Currently multiple repos are not supported"
  exit 1
fi

# Set start and stop date if empty
#printf "\n>\n> Check if start and end date is set\n"
#if [ "${INPUT_GOURCE_START_DATE}" = "" ]; then
#  # // TODO: This needs some attention when used with multiple repos
#  cd ./git_repo
#  printf "\n> \tStart date is empty\n"
#  first_commit=git rev-list --max-parents=0 HEAD
#  echo "First commit: $first_commit"
#  echo $(git show -s --format=%cd --date=short $first_commit)
#  export INPUT_GOURCE_START_DATE=$(git show -s --format=%cd --date=short $first_commit)
#  printf "\n> \tSet start date to: $INPUT_GOURCE_START_DATE\n"
#  cd ..
#else
#  printf "\n> \tStart date is set to: $INPUT_GOURCE_START_DATE\n"
#fi
#if [ "${INPUT_GOURCE_STOP_DATE}" = "" ]; then
#  # // TODO: This needs some attention when used with multiple repos
#  cd ./git_repo
#  printf "\n> \tEnd date is empty\n"
#  last_commit=git rev-parse HEAD
#  echo "last commit: $last_commit"
#  echo $(git show -s --format=%cd --date=short $last_commit)
#  export INPUT_GOURCE_STOP_DATE=$(git show -s --format=%cd --date=short $last_commit)
#  printf "\n> \tSet end date to: $INPUT_GOURCE_STOP_DATE\n"
#  cd ..
#else
#  printf "\n> \tEnd date is set to: $INPUT_GOURCE_STOP_DATE\n"
#fi

# Set proper env variables if we have a logo.
printf "\n>\n> Logo check"
if [ "$INPUT_LOGO_URL" != "" ]; then
  if [[ $INPUT_LOGO_URL =~ ^https?:\/\/.+(png|jpg)(\?[a-z=0-9-]+)?$ ]]; then
    printf "\n> \tDownloading file"
    wget -O ./logo.image $INPUT_LOGO_URL >/dev/null 2>&1
  else
    printf "\n> \tUsing local file"
    mv "./git_repo/$INPUT_LOGO_URL" ./logo.image
  fi

  convert -geometry x160 ./logo.image ./logo.image

  printf "\n> \tUsing logo from: ${INPUT_LOGO_URL} \n"
  export LOGO=" -i ./logo.image "
  export LOGO_FILTER_GRAPH=";[with_date][2:v]overlay=main_w-overlay_w-40:main_h-overlay_h-40[with_logo]"
  export FILTER_GRAPH_MAP=" -map [with_logo] "
else
  printf "\n> \tNo logo provided, skipping logo setup\n"
  export FILTER_GRAPH_MAP=" -map [with_date] "
fi

# Auto fetch contributor avatars
printf "\n>\n> Auto fetch contributor avatars: ${INPUT_AVATARS_AUTO_FETCH}"
if [ "${INPUT_AVATARS_AUTO_FETCH}" == "true" ]; then
  printf "\n> \tFetching all contributors\n"
  contributorCount=0
  avatarsCount=0

  while IFS='|' read -ra author; do
    ((contributorCount=contributorCount+1))
    name=${author[0]}
    name="${name#"${name%%[![:space:]]*}"}" # This hack removes leating and trailing spaces
    name="${name%"${name##*[![:space:]]}"}"
    email=${author[1]}
    email="${email#"${email%%[![:space:]]*}"}"
    email="${email%"${email##*[![:space:]]}"}"


    # Use github api to get avatar url using the author name or email
    avatar_by_name=$(wget -O - -o /dev/null https://api.github.com/users/$name | jq -r '.avatar_url')

    if ([ "$avatar_by_name" != "null" ] && [ ! -z "$avatar_by_name" ]); then
      printf "\n> \t\tDownloading avatar for $name from: $avatar_by_name"
      wget -O "/gource/avatars/$name.png" $avatar_by_name >/dev/null 2>&1
      ((avatarsCount=avatarsCount+1))
      continue
    fi
      
    avatar_by_email=$(wget -O - -o /dev/null https://api.github.com/search/users?q=$email | jq -r '.items[0].avatar_url')
    if ([ "$avatar_by_email" != "null" ] && [ ! -z "$avatar_by_name" ]); then
      printf "\n> \t\tDownloading avatar for $email from: $avatar_by_email"
      wget -O "/gource/avatars/$name.png" $avatar_by_email >/dev/null 2>&1
      ((avatarsCount=avatarsCount+1))
      continue
    fi
  done <<< "$(git --git-dir /gource/git_repo/.git log --pretty="%aN | %aE" | sort | uniq)";

  printf "\n>\n> \tFound $contributorCount contibutors"
  printf "\n> \tSuccessfully fetched $avatarsCount avatars"
else
  printf "\n> \tAuto fetch is disabled, fall back to avatars directory\n"

  # Copy user imgages if provided
  printf "\n>\n> Avatars check"
  if [ "${INPUT_AVATARS_URL}" != "" ]; then
    printf "\n> \tCopy avatars directory: ${INPUT_AVATARS_URL}\n"
    find "/github/workspace/${INPUT_AVATARS_URL}" -type f -exec cp {} /gource/avatars \;
  else
    printf "\n> \tNo avatars directory provided, skipping avatars setup\n"
  fi
fi


# Run the visualization
printf "\n>\n> Starting gource script\n"
/usr/local/bin/gource.sh
printf "\n> Gource script completed"

# Copy logs and output file to mounted directory
printf "\n>\n> Clean up"
printf "\n> \tCreate output directory /github/workspace/gource"
mkdir -p /github/workspace/gource/logs
printf "\n> \tCopy generated mp4 to /github/workspace/gource"
cp ./output/gource.mp4 /github/workspace/gource
printf "\n> \tCopy logs to /github/workspace/gource/logs"
cp ./logs/* /github/workspace/gource/logs
chmod -R 777 /github/workspace/gource

printf "\n> \tDelete working directory"
rm -r /gource

# If gource.mp4 dont exist exit with error
if [ ! -f /github/workspace/gource/gource.mp4 ]; then
  printf "\n>\n> ERROR: Can't find: /github/workspace/gource/gource.mp4\n>"
  exit 2
fi

# Exit
printf "\n>\n> Done.\n>"
exit 0