#!/usr/bin/env bash
# Retention cleanup: read PV directly, no git-pages API.
# Removes old commit-level report dirs based on branch existence + age rules.
set -euo pipefail

DATA_ROOT="${DATA_ROOT:-/app/data}"
CONFIG="${RETENTION_CONFIG:-/etc/retention/retention.json}"
GITEA_API_URL="${GITEA_API_URL:-}"
GITEA_TOKEN="${GITEA_TOKEN:-}"

[ -f "$CONFIG" ] || { echo "ERROR: config missing: $CONFIG" >&2; exit 1; }

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "$SCRIPT_DIR/retention-lib.sh"

DELETED_COUNT=0
ERROR_COUNT=0

for owner_dir in "$DATA_ROOT"/*/; do
  [ -d "$owner_dir" ] || continue
  owner=$(basename "$owner_dir")

  for repo_dir in "$owner_dir"*/; do
    [ -d "$repo_dir" ] || continue
    repo=$(basename "$repo_dir")

    for branch_dir in "$repo_dir"*/; do
      [ -d "$branch_dir" ] || continue
      branch=$(basename "$branch_dir")

      echo "=== ${owner}/${repo}/${branch} ==="

      if ! branch_exists "$owner" "$repo" "$branch"; then
        echo "  Branch does not exist in Gitea -> DELETE ALL"
        rm -rf "$branch_dir"
        DELETED_COUNT=$((DELETED_COUNT + 1))
        continue
      fi

      rules=$(jq -r ".branches.\"$branch\" // .branches.default" "$CONFIG")
      keep_min=$(echo "$rules" | jq -r '.keepMin // 5')
      min_age=$(echo "$rules" | jq -r '.minAgeDays // 7')

      commits=$(ls -1t "$branch_dir" 2>/dev/null || true)
      count=0
      for sha8 in $commits; do
        [ -d "$branch_dir/$sha8" ] || continue
        count=$((count + 1))

        [ "$count" -le "$keep_min" ] && continue

        age=$(age_days_from_stat "$branch_dir/$sha8")
        [ "$age" -lt "$min_age" ] && continue

        echo "  DELETE: ${owner}/${repo}/${branch}/${sha8} (age=${age}d, keepMin=${keep_min})"
        rm -rf "$branch_dir/$sha8"
        DELETED_COUNT=$((DELETED_COUNT + 1))
      done
    done
  done
done

echo ""
echo "=== Summary ==="
echo "  Deleted: ${DELETED_COUNT}"
echo "  Errors:  ${ERROR_COUNT}"