#!/bin/sh

set -euo pipefail

if [[ ! -z "${DRONE_NETRC_MACHINE}" ]]; then
	cat <<EOF > ${HOME}/.netrc
machine ${DRONE_NETRC_MACHINE}
login ${DRONE_NETRC_USERNAME}
password ${DRONE_NETRC_PASSWORD}
EOF
fi

if [[ -z "${DRONE_COMMIT_AUTHOR_NAME}" ]]; then
	export DRONE_COMMIT_AUTHOR_NAME=drone
fi

if [[ -z "${DRONE_COMMIT_AUTHOR_EMAIL}" ]]; then
	export DRONE_COMMIT_AUTHOR_EMAIL=drone@localhost
fi

export GIT_AUTHOR_NAME=${DRONE_COMMIT_AUTHOR_NAME}
export GIT_AUTHOR_EMAIL=${DRONE_COMMIT_AUTHOR_EMAIL}
export GIT_COMMITTER_NAME=${DRONE_COMMIT_AUTHOR_NAME}
export GIT_COMMITTER_EMAIL=${DRONE_COMMIT_AUTHOR_EMAIL}

git fetch --tags

CURRENTTAG=$(git tag --sort=-taggerdate | head -n 1)
PREVIOUSTAG=$(git tag --sort=-taggerdate | head -n 2 | tail -n 1)
echo "$PREVIOUSTAG..$CURRENTTAG"
ALLCHANGES=$(npx -y @philippdormann/changelogen@0.7.6 --from $PREVIOUSTAG --to $CURRENTTAG --no-output | sed 's/"/\\"/g' | tail -n +6)

if [ "${PLUGIN_GITEA_DOMAIN:+set}" = set ]; then
  if [ "${PLUGIN_GITEA_APIKEY:-null}" = null ]; then
    echo "No api key provided";
    exit 1;
  fi
  if [ "${PLUGIN_REPO:-null}" = null ]; then
    echo "Falling back to drone repo name";
    PLUGIN_REPO=$CI_REPO_NAME
  fi

  curl --request POST \
  --url "https://$PLUGIN_GITEA_DOMAIN/api/v1/repos/$PLUGIN_REPO/releases" \
  --header "Content-Type: application/json" \
  --header "Authorization: token $PLUGIN_GITEA_APIKEY" \
  --data "{
      \"name\": \"$CURRENTTAG\",
      \"body\": \"$ALLCHANGES\",
      \"draft\": false,
      \"tag_name\": \"$CURRENTTAG\"
  }"
  echo "Release created";
fi
if [ "${PLUGIN_MATRIX_SERVER:+set}" = set ]; then
  echo "Detected matrix server";
  if [ "${PLUGIN_MATRIX_USER:-null}" = null ]; then
    echo "No matrix username provided";
    exit 3;
  fi
  if [ "${PLUGIN_REPO:-null}" = null ]; then
    echo "No matrix password provided";
    exit 4;
  fi
  if [ "${PLUGIN_MATRIX_ROOM:-null}" = null ]; then
    echo "No matrix room id provided";
    exit 4;
  fi

  MATRIX_LOGIN=$(curl --request POST \
      --url "https://$PLUGIN_MATRIX_SERVER/_matrix/client/r0/login" \
      --header "Content-Type: application/json" \
      --data "{
        \"type\": \"m.login.password\",
        \"user\": \"$PLUGIN_MATRIX_USER\",
        \"password\": \"$PLUGIN_MATRIX_PASSWORD\"
      }")
  MATRIX_TOKEN=$(echo $MATRIX_LOGIN | jq .access_token | sed 's/"//g' )

  if [ "${PLUGIN_VERSION_PREFIX:-null}" = null ]; then
    echo "Falling back to empty version prefix";
    PLUGIN_VERSION_PREFIX=""
  fi
  FORMATTED_CHANGES=$(echo "# $PLUGIN_VERSION_PREFIX$CURRENTTAG \n $ALLCHANGES" | pandoc -f markdown -t html | sed 's/"/'"'"'/g' | xargs echo -n)
  
  curl --request POST \
      --url "https://$PLUGIN_MATRIX_SERVER/_matrix/client/r0/rooms/$PLUGIN_MATRIX_ROOM/send/m.room.message?access_token=$MATRIX_TOKEN" \
      --header "Content-Type: application/json" \
      --data "{
        \"msgtype\": \"m.text\",
        \"body\": \"$(echo "# $PLUGIN_VERSION_PREFIX$CURRENTTAG \n $ALLCHANGES" | xargs echo -n)\",
        \"format\": \"org.matrix.custom.html\",
        \"formatted_body\": \"$FORMATTED_CHANGES\"
      }"
  echo "Notification sent";
fi