#! /bin/bash

## Author: Sebastian Mark
## CC-BY-SA (https://creativecommons.org/licenses/by-sa/4.0/deed.de)
## for civil use only

## start renovate cronjob manually
## Usage: start_renovate_bot.sh [--debug] [group/repo group/repo ...]

set -e

NS="renovate"
CRONJOBNAME="renovate-bot"
JOBNAME="renovate-bot-manual-$(openssl rand -hex 3)"

TMPFILE=$(mktemp)

## create a single job from cronjob
kubectl -n $NS --dry-run=client create job $JOBNAME --from=cronjob/$CRONJOBNAME -o yaml >$TMPFILE

## add debug env var
if [[ "$1" == "--debug" ]]; then
  kubectl patch --local -f $TMPFILE --type='json' --patch='[
  {
    "op": "add",
    "path": "/spec/template/spec/containers/0/env/-",
    "value": { "name": "LOG_LEVEL", "value": "debug"}
  }
  ]' -o yaml | sponge $TMPFILE
  shift
fi

## limit job to passed repo(s)
if [[ $# -gt 0 ]]; then
  ## disable autodiscover
  kubectl patch --local -f $TMPFILE --type='json' --patch='[
  {
    "op": "add",
    "path": "/spec/template/spec/containers/0/args",
    "value": ["--autodiscover=false"]
  }
  ]' -o yaml | sponge $TMPFILE

  ## add each repo as single argument
  for REPO in "$@"; do
    kubectl patch --local -f $TMPFILE --type='json' --patch='[
    {
      "op": "add",
      "path": "/spec/template/spec/containers/0/args/-",
      "value": "'$REPO'"
    }
    ]' -o yaml | sponge $TMPFILE
  done
fi

## create job
kubectl -n $NS apply -f $TMPFILE
rm $TMPFILE

## wait for corrosponding pod to be ready
PODNAME=$(kubectl -n $NS get pods --selector=job-name=$JOBNAME --no-headers -o custom-columns=":metadata.name")
kubectl -n $NS wait --for=condition=Ready pod/$PODNAME --timeout=3m

## show job logs
echo "waiting for logs...."
echo
kubectl -n $NS logs -f job/$JOBNAME
echo

echo "saving log to /tmp/${JOBNAME}.log"
kubectl -n $NS logs job/$JOBNAME &>/tmp/${JOBNAME}.log

## remove job
kubectl -n $NS delete job $JOBNAME