#!/usr/bin/env bash
# Creates the Gitea release for the current tag (or reuses it) and uploads every file
# given as an argument, replacing files of the same name from an earlier run.
# Needs GITEA_TOKEN plus the GITHUB_* variables every Actions job gets.
set -euo pipefail

api="$GITHUB_SERVER_URL/api/v1/repos/$GITHUB_REPOSITORY"
tag="$GITHUB_REF_NAME"
auth=(-H "Authorization: token $GITEA_TOKEN")
json() { node -e "let s='';process.stdin.on('data',d=>s+=d).on('end',()=>{const v=JSON.parse(s);console.log($1)})"; }

if release=$(curl -sf "${auth[@]}" "$api/releases/tags/$tag"); then
  echo "Using the existing release for $tag"
else
  echo "Creating the release for $tag"
  release=$(curl -sf "${auth[@]}" -H "Content-Type: application/json" \
    -d "{\"tag_name\": \"$tag\", \"name\": \"$tag\"}" "$api/releases")
fi
id=$(echo "$release" | json 'v.id')

for file in "$@"; do
  name=$(basename "$file")
  old=$(echo "$release" | NAME="$name" json "(v.assets||[]).filter(a=>a.name===process.env.NAME).map(a=>a.id).join(' ')")
  for asset in $old; do
    curl -sf "${auth[@]}" -X DELETE "$api/releases/$id/assets/$asset"
  done
  echo "Uploading $name"
  curl -sf "${auth[@]}" -F "attachment=@$file" "$api/releases/$id/assets?name=$name" >/dev/null
done