#!/usr/bin/env bash
# Delete Gitea Actions artifacts by exact name (keep newest N).
# Usage: prune-gitea-artifacts.sh <owner/repo> <artifact-name> [keep_last]
# Env: GITEA_BASE_URL, GITEA_TOKEN (or REGISTRY_PASSWORD)
set -euo pipefail

REPO="${1:?owner/repo e.g. EventHub/EventHubFront}"
NAME_FILTER="${2:?artifact name}"
KEEP_LAST="${3:-0}"
BASE="${GITEA_BASE_URL:-https://git.sabilin.com}"
TOKEN="${GITEA_TOKEN:-${REGISTRY_PASSWORD:-}}"

if [[ -z "${TOKEN}" ]]; then
  echo "prune-gitea-artifacts: no token — skip" >&2
  exit 0
fi

python3 - "${BASE}" "${TOKEN}" "${REPO}" "${NAME_FILTER}" "${KEEP_LAST}" <<'PY'
import json, os, sys, urllib.request, urllib.error

base, token, repo, name_filter, keep_last = sys.argv[1:6]
keep_last = int(keep_last)
headers = {"Authorization": f"token {token}", "Accept": "application/json"}

def get(url):
    req = urllib.request.Request(url, headers=headers)
    with urllib.request.urlopen(req, timeout=60) as resp:
        return json.load(resp)

def delete(url):
    req = urllib.request.Request(url, headers=headers, method="DELETE")
    try:
        with urllib.request.urlopen(req, timeout=60) as resp:
            return resp.status
    except urllib.error.HTTPError as e:
        return e.code

arts = []
page = 1
while page <= 40:
    url = f"{base.rstrip('/')}/api/v1/repos/{repo}/actions/artifacts?limit=50&page={page}"
    try:
        data = get(url)
    except Exception as exc:
        print(f"prune-gitea-artifacts: list failed: {exc}", file=sys.stderr)
        sys.exit(0)
    batch = data if isinstance(data, list) else (data.get("artifacts") or data.get("data") or [])
    if not batch:
        break
    for a in batch:
        n = str(a.get("name") or "")
        if n == name_filter or n.startswith(name_filter):
            arts.append(a)
    if len(batch) < 50:
        break
    page += 1

# Prefer newest first by id desc
arts.sort(key=lambda a: int(a.get("id") or 0), reverse=True)
to_delete = arts[keep_last:]
print(f"prune-gitea-artifacts: {repo} name={name_filter} matched={len(arts)} delete={len(to_delete)} keep={keep_last}")
for a in to_delete:
    aid = a.get("id")
    code = delete(f"{base.rstrip('/')}/api/v1/repos/{repo}/actions/artifacts/{aid}")
    print(f"  delete id={aid} name={a.get('name')} http={code}")
PY