#!/usr/bin/env sh
set -eu

usage() {
  cat <<'EOF'
Usage:
  GITEA_TOKEN=... scripts/upload-gitea-release.sh TAG [artifact...]

Environment:
  GITEA_URL       Base URL, default https://git.palav.dev
  GITEA_REPO      owner/repo, default Palav/dosh
  GITEA_TOKEN     Token with release write permission
  GITEA_TITLE     Release title, default TAG
EOF
}

if [ "${1:-}" = "-h" ] || [ "${1:-}" = "--help" ]; then
  usage
  exit 0
fi

tag="${1:-}"
if [ -z "$tag" ]; then
  usage >&2
  exit 2
fi
shift

base="${GITEA_URL:-https://git.palav.dev}"
repo="${GITEA_REPO:-Palav/dosh}"
token="${GITEA_TOKEN:-}"
title="${GITEA_TITLE:-$tag}"

if [ -z "$token" ]; then
  echo "GITEA_TOKEN is required" >&2
  exit 2
fi

if [ "$#" -eq 0 ]; then
  set -- target/dosh-release/dosh-*
fi

api="$base/api/v1/repos/$repo"
auth_header="Authorization: token $token"

release_json="$(curl -fsS -H "$auth_header" "$api/releases/tags/$tag" 2>/dev/null || true)"
release_id=""
if [ -n "$release_json" ] && command -v jq >/dev/null 2>&1; then
  release_id="$(printf '%s\n' "$release_json" | jq -r '.id // empty')"
elif [ -n "$release_json" ]; then
  release_id="$(printf '%s\n' "$release_json" | sed -n 's/^[[:space:]]*{"id":[[:space:]]*\([0-9][0-9]*\).*/\1/p' | sed -n '1p')"
fi

if [ -z "$release_id" ]; then
  payload="$(printf '{"tag_name":"%s","target_commitish":"main","name":"%s","body":"Dosh release %s","draft":false,"prerelease":false}\n' "$tag" "$title" "$tag")"
  release_json="$(curl -fsS -H "$auth_header" -H 'Content-Type: application/json' -X POST "$api/releases" -d "$payload")"
  if command -v jq >/dev/null 2>&1; then
    release_id="$(printf '%s\n' "$release_json" | jq -r '.id // empty')"
  else
    release_id="$(printf '%s\n' "$release_json" | sed -n 's/^[[:space:]]*{"id":[[:space:]]*\([0-9][0-9]*\).*/\1/p' | sed -n '1p')"
  fi
fi

if [ -z "$release_id" ]; then
  echo "could not determine Gitea release id for $tag" >&2
  exit 1
fi

delete_existing_asset() {
  name="$1"
  if ! command -v jq >/dev/null 2>&1; then
    return 0
  fi
  printf '%s\n' "$release_json" \
    | jq -r --arg name "$name" '.assets[]? | select(.name == $name) | .id' \
    | while IFS= read -r asset_id; do
      [ -n "$asset_id" ] || continue
      echo "replacing $name"
      curl -fsS \
        -H "$auth_header" \
        -X DELETE \
        "$api/releases/$release_id/assets/$asset_id" >/dev/null
    done
}

for artifact in "$@"; do
  if [ ! -f "$artifact" ]; then
    continue
  fi
  name="$(basename "$artifact")"
  delete_existing_asset "$name"
  echo "uploading $name"
  curl -fsS \
    -H "$auth_header" \
    -X POST \
    -F "attachment=@$artifact" \
    "$api/releases/$release_id/assets?name=$name" >/dev/null
done