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

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

Publishes the current Dosh release to Gitea.

Defaults:
  TAG                 v<Cargo.toml version>
  DOSH_PUBLISH_BUILD 1: run scripts/package-release.sh first
  DOSH_PUBLISH_PUSH  1: push TAG to origin
  DOSH_PUBLISH_PRUNE 1: remove stale dosh-<version>-* duplicate assets

Environment:
  GITEA_URL, GITEA_REPO, GITEA_TOKEN: same as upload-gitea-release.sh
  DOSH_PUBLISH_ALLOW_DIRTY=1          allow uncommitted changes
EOF
}

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

repo_root="$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)"
cd "$repo_root"

version="$(sed -n 's/^version = "\(.*\)"/\1/p' Cargo.toml | sed -n '1p')"
tag="${1:-v$version}"
base="${GITEA_URL:-https://git.palav.dev}"
repo="${GITEA_REPO:-Palav/dosh}"
token="${GITEA_TOKEN:-}"
build="${DOSH_PUBLISH_BUILD:-1}"
push_tag="${DOSH_PUBLISH_PUSH:-1}"
prune="${DOSH_PUBLISH_PRUNE:-1}"

if [ -z "$token" ] && [ -f "$HOME/.config/dosh/gitea-token" ]; then
  token="$(tr -d '\r\n' <"$HOME/.config/dosh/gitea-token")"
fi

need() {
  if ! command -v "$1" >/dev/null 2>&1; then
    echo "missing required command: $1" >&2
    exit 1
  fi
}

need git
need curl

if [ "${DOSH_PUBLISH_ALLOW_DIRTY:-0}" != "1" ] && [ -n "$(git status --porcelain)" ]; then
  echo "refusing to publish with uncommitted changes" >&2
  echo "commit first, or set DOSH_PUBLISH_ALLOW_DIRTY=1" >&2
  exit 1
fi

head="$(git rev-parse HEAD)"
if git rev-parse -q --verify "refs/tags/$tag" >/dev/null; then
  tagged="$(git rev-list -n 1 "$tag")"
  if [ "$tagged" != "$head" ]; then
    echo "tag $tag points at $tagged, not HEAD $head" >&2
    exit 1
  fi
else
  git tag "$tag" "$head"
fi

if [ "$push_tag" = "1" ]; then
  git push origin "$tag"
fi

if [ "$build" = "1" ]; then
  sh scripts/package-release.sh
fi

scripts/upload-gitea-release.sh "$tag"

api="$base/api/v1/repos/$repo"
auth_header="Authorization: token $token"
release_json="$(curl -fsS -H "$auth_header" "$api/releases/tags/$tag")"
release_id=""
if command -v jq >/dev/null 2>&1; then
  release_id="$(printf '%s\n' "$release_json" | jq -r '.id // empty')"
fi

if [ "$prune" = "1" ] && [ -n "$release_id" ] && command -v jq >/dev/null 2>&1; then
  printf '%s\n' "$release_json" \
    | jq -r '.assets[]? | select(.name | test("^dosh-[0-9]")) | [.id, .name] | @tsv' \
    | while IFS="$(printf '\t')" read -r asset_id name; do
      [ -n "$asset_id" ] || continue
      echo "deleting duplicate $name"
      curl -fsS -H "$auth_header" -X DELETE "$api/releases/$release_id/assets/$asset_id" >/dev/null
    done
  release_json="$(curl -fsS -H "$auth_header" "$api/releases/tags/$tag")"
fi

web_repo="${base%/}/${repo}"
failed=0
artifact_version() {
  artifact="$1"
  case "$artifact" in
    *.tar.gz)
      tar -xOf "$artifact" dosh/VERSION 2>/dev/null | tr -d '\r\n'
      ;;
    *.zip)
      unzip -p "$artifact" dosh/VERSION 2>/dev/null | tr -d '\r\n'
      ;;
    *)
      return 1
      ;;
  esac
}

for artifact in target/dosh-release/dosh-linux-*.tar.gz target/dosh-release/dosh-macos-*.tar.gz target/dosh-release/dosh-windows-*.zip; do
  [ -f "$artifact" ] || continue
  name="$(basename "$artifact")"
  case "$name" in
    dosh-[0-9]*)
      continue
      ;;
  esac
  actual="$(artifact_version "$artifact" || true)"
  if [ "$actual" != "$version" ]; then
    echo "skipping stale artifact $name: version ${actual:-unknown}, expected $version" >&2
    continue
  fi
  url="$web_repo/releases/download/$tag/$name"
  if curl -fsSI "$url" >/dev/null; then
    echo "verified $url"
  else
    echo "missing release asset: $url" >&2
    failed=1
  fi
done

if [ "$failed" != "0" ]; then
  exit 1
fi

if command -v jq >/dev/null 2>&1; then
  printf '%s\n' "$release_json" | jq -r '"assets=\(.assets|length)", (.assets[] | "\(.name) \(.size)")'
fi