Feature/git pages -> oma nginx perusteinen raporointipalvelu (#48)

Co-authored-by: moilanik <niko.moilanen@tietoevry.com>
Reviewed-on: #48

gitea-reports/files/retention-lib.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+# Shared functions for retention-cleanup.sh
+# Can be sourced by tests for unit testing
+
+age_days_from_stat() {
+  local dir="$1" epoch_dir now
+  epoch_dir=$(stat -c %Y "$dir" 2>/dev/null || stat -f %m "$dir" 2>/dev/null || echo 0)
+  [ "$epoch_dir" -eq 0 ] && echo 99999 && return
+  now=$(date +%s)
+  echo $(( (now - epoch_dir) / 86400 ))
+}
+
+read_rule() {
+  local config="$1" branch="$2" key="$3" default="$4"
+  v=$(jq -r --arg b "$branch" --arg k "$key" '.branches[$b][$k] // empty' "$config")
+  [ -n "$v" ] && echo "$v" || echo "$default"
+}
+
+branch_exists() {
+  local owner="$1" repo="$2" branch="$3"
+  local branch_urlenc code
+
+  [ -z "$GITEA_API_URL" ] && return 0
+  [ -z "$GITEA_TOKEN" ] && return 0
+
+  branch_urlenc=$(echo "$branch" | sed 's/\//%2F/g')
+  code=$(curl -s -o /dev/null -w "%{http_code}" \
+    -H "Authorization: token $GITEA_TOKEN" \
+    "$GITEA_API_URL/api/v1/repos/$owner/$repo/branches/$branch_urlenc" 2>/dev/null || echo "000")
+
+  [ "$code" = "200" ]
+}