#!/bin/bash
set -v
set -e

# Variables
API=https://your.gitlab.host/api/v4/
DEPENDABOT_STANDALONE_PROJECT_ID=400
AFTER=2021-01-01T00:00.00Z
PROJECTS=projects.txt
SOURCE_FILE='.gitlab%2Fdependabot.yml'

# Gather up to 300 repositories
curl --header Private-Token:${SETTINGS__GITLAB_ACCESS_TOKEN} "${API}projects?simple=true&archived=false&order_by=name&sort=asc&last_activity_after=${AFTER}&per_page=100" | jq -r '.[] | "\(.id),\(.path_with_namespace)"' > $PROJECTS
curl --header Private-Token:${SETTINGS__GITLAB_ACCESS_TOKEN} "${API}projects?simple=true&archived=false&order_by=name&sort=asc&last_activity_after=${AFTER}&per_page=100&page=2" | jq -r '.[] | "\(.id),\(.path_with_namespace)"' >> $PROJECTS
curl --header Private-Token:${SETTINGS__GITLAB_ACCESS_TOKEN} "${API}projects?simple=true&archived=false&order_by=name&sort=asc&last_activity_after=${AFTER}&per_page=100&page=3" | jq -r '.[] | "\(.id),\(.path_with_namespace)"' >> $PROJECTS

throttle() {
	while [ "$(jobs | wc -l)" -ge 4 ]
	do
		sleep 1
	done
}

download () {
  local id=$1
  local repo=$2

  # Download source files
  echo $id : $repo
  mkdir -p "$(dirname $repo)"
  ! curl --silent --fail --header Private-Token:${SETTINGS__GITLAB_ACCESS_TOKEN} "${API}projects/${id}/repository/files/${SOURCE_FILE}/raw?ref=main" --output $repo
  ! curl --silent --fail --header Private-Token:${SETTINGS__GITLAB_ACCESS_TOKEN} "${API}projects/${id}/repository/files/${SOURCE_FILE}/raw?ref=master" --output $repo

  # Warn on missing config files
  if [ ! -f $repo ]; then
    echo $id : $repo >> MISSING.txt
  fi
}

# Download config files for each repository
while IFS=, read -r id path_with_namespace
do
  throttle; download $id $path_with_namespace &
done < $PROJECTS
wait

# Sort MISSING files
if [ -f MISSING.txt ]; then
  sort -o MISSING.txt MISSING.txt
fi

# Determine what to run for which project
grep -rl docker your-gitlab-group/ > docker.txt
grep -rl gradle your-gitlab-group/ > gradle.txt
grep -rl maven your-gitlab-group/ > maven.txt
grep -rl nuget your-gitlab-group/ > nuget.txt
grep -rl pip your-gitlab-group/ > pip.txt
grep -rl npm your-gitlab-group/ > npm.txt

# Retrieve existing pipeline schedules
SCHEDULES="${API}projects/${DEPENDABOT_STANDALONE_PROJECT_ID}/pipeline_schedules"
curl --header Private-Token:${SETTINGS__GITLAB_ACCESS_TOKEN} "${SCHEDULES}?per_page=100" | jq -r '.[] | "\(.id),\(.description)"' > existing.txt
curl --header Private-Token:${SETTINGS__GITLAB_ACCESS_TOKEN} "${SCHEDULES}?per_page=100&page=2" | jq -r '.[] | "\(.id),\(.description)"' >> existing.txt
sort existing.txt

schedule() {
  local package_manager=$1
  local path=$2
  local directory=$3

  # Skip if already present
  if ! grep -q "$path $package_manager" existing.txt; then
    # Create schedule
    echo "Creating  $path $package_manager schedule"
    schedule_id=$(curl --request POST --header Private-Token:${SETTINGS__GITLAB_ACCESS_TOKEN} \
      --form description="$path $package_manager" \
      --form ref="master" \
      --form cron="0 4 * * 2" \
      --form active="false" \
      "${SCHEDULES}" | jq -r '.id')
    # Add required parameters
    curl --request POST --header Private-Token:${SETTINGS__GITLAB_ACCESS_TOKEN} --form "key=PROJECT_PATH" --form "value=$path" "${SCHEDULES}/${schedule_id}/variables"
    curl --request POST --header Private-Token:${SETTINGS__GITLAB_ACCESS_TOKEN} --form "key=PACKAGE_MANAGER_SET" --form "value=$package_manager" "${SCHEDULES}/${schedule_id}/variables"
    curl --request POST --header Private-Token:${SETTINGS__GITLAB_ACCESS_TOKEN} --form "key=DIRECTORY" --form "value=$directory" "${SCHEDULES}/${schedule_id}/variables"
    # Start immediately
    #curl --request POST --header Private-Token:${SETTINGS__GITLAB_ACCESS_TOKEN} "${SCHEDULES}/${schedule_id}/play"
  else
    echo "Skipping $path $package_manager as it already exists"
  fi
}

# Add scheduled tasks for Docker
while read -r path
do
  schedule docker "$path" /
done < docker.txt
# Add scheduled tasks for gradle
while read -r path
do
  schedule gradle "$path" /
done < gradle.txt
# Add scheduled tasks for maven
while read -r path
do
  schedule maven "$path" /
done < maven.txt
# Add scheduled tasks for pip
while read -r path
do
  schedule pip "$path" /
done < pip.txt
# Add scheduled tasks for nuget
while read -r path
do
  schedule nuget "$path" /
done < nuget.txt
# Add scheduled tasks for npm
while read -r path
do
  schedule npm "$path" /
done < npm.txt