From 4690617de01966eafaa9e3139282a4603255770e Mon Sep 17 00:00:00 2001
From: Jeffery <jiantw83@yahoo.com>
Date: Fri, 15 May 2026 02:02:21 +0000
Subject: [PATCH] feat: add dry run delete flow

---
 action.yaml   |  4 ++++
 entrypoint.sh | 56 +++++++++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 58 insertions(+), 2 deletions(-)

diff --git a/action.yaml b/action.yaml
index be38a82..2de13d3 100644
--- a/action.yaml
+++ b/action.yaml
@@ -9,6 +9,10 @@ inputs:
     description: 'Number of recent package versions to keep'
     required: false
     default: '2'
+  dry_run:
+    description: 'When true, only print delete candidates'
+    required: false
+    default: 'true'
 runs:
   using: 'docker'
   image: 'Dockerfile'
diff --git a/entrypoint.sh b/entrypoint.sh
index 101f28a..0164d8a 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -47,6 +47,22 @@ resolve_keep_versions() {
   printf '%s' "${raw_value}"
 }
 
+resolve_dry_run() {
+  local raw_value="${INPUT_DRY_RUN:-true}"
+
+  case "${raw_value,,}" in
+    true|1|yes|on)
+      printf 'true'
+      ;;
+    false|0|no|off)
+      printf 'false'
+      ;;
+    *)
+      fail "Invalid dry_run: ${raw_value}"
+      ;;
+  esac
+}
+
 init_repo_context() {
   local repository="${GITEA_REPOSITORY:-}"
 
@@ -171,8 +187,41 @@ collect_package_candidates() {
   done < <(jq -c 'group_by(.name)[]' <<<"${packages_json}")
 }
 
+process_candidates() {
+  local dry_run="$1"
+  local name version created_at
+  local deleted_count=0
+  local skipped_count=0
+  local error_count=0
+
+  if [[ ! -s "${CANDIDATES_FILE}" ]]; then
+    log "No delete candidates found"
+    return 0
+  fi
+
+  while IFS=$'\t' read -r name version created_at; do
+    [[ -z "${name}" ]] && continue
+
+    if [[ "${dry_run}" == "true" ]]; then
+      log "[DRY-RUN] Would delete package ${name} version ${version} (created: ${created_at})"
+      skipped_count=$((skipped_count + 1))
+      continue
+    fi
+
+    if api_request DELETE "/api/v1/packages/${REPO_OWNER}/nuget/${name}/${version}"; then
+      log "Deleted package ${name} version ${version} -> ${API_HTTP_CODE}"
+      deleted_count=$((deleted_count + 1))
+    else
+      log "ERROR: DELETE package ${name} version ${version} -> ${API_HTTP_CODE}"
+      error_count=$((error_count + 1))
+    fi
+  done < "${CANDIDATES_FILE}"
+
+  log "Summary: deleted=${deleted_count} kept=${keep_versions} candidates=$(wc -l < "${CANDIDATES_FILE}") skipped=${skipped_count} errors=${error_count} dry_run=${dry_run}"
+}
+
 main() {
-  local token keep_versions
+  local token keep_versions dry_run
 
   log "Gitea Server Url: ${GITEA_SERVER_URL:-}"
   log "Gitea Repository: ${GITEA_REPOSITORY:-}"
@@ -184,7 +233,9 @@ main() {
   export RESOLVED_GITEA_TOKEN="$token"
   init_repo_context
   keep_versions="$(resolve_keep_versions)"
+  dry_run="$(resolve_dry_run)"
   log "keep_versions=${keep_versions}"
+  log "dry_run=${dry_run}"
   log "Token source resolved successfully"
 
   CANDIDATES_FILE="$(mktemp)"
@@ -192,7 +243,8 @@ main() {
   trap 'rm -f "${CANDIDATES_FILE}"' EXIT
 
   collect_package_candidates
-  log "Stage 3 complete"
+  process_candidates "${dry_run}"
+  log "Stage 4 complete"
 }
 
 main "$@"