#!/usr/bin/env bash
set -euo pipefail

# =============================================================================
# phase3_post_check.sh — Verify Phase 3 (Runners) succeeded
# Checks that every runner defined in runners.conf is registered and online
# in the Gitea admin panel.
# Exits 0 only if ALL checks pass.
# =============================================================================

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
source "${SCRIPT_DIR}/lib/common.sh"

load_env
require_vars GITEA_INTERNAL_URL GITEA_ADMIN_TOKEN

log_info "=== Phase 3 Post-Check ==="

RUNNERS_CONF="${SCRIPT_DIR}/runners.conf"

if [[ ! -f "$RUNNERS_CONF" ]]; then
  log_error "runners.conf not found"
  exit 1
fi

PASS=0
FAIL=0

# ---------------------------------------------------------------------------
# Fetch all registered runners from Gitea admin API (single call)
# This avoids making N API calls — one per runner — which would be slow.
# ---------------------------------------------------------------------------
API_RUNNERS=$(gitea_api GET "/admin/runners" 2>/dev/null || echo "[]")

# ---------------------------------------------------------------------------
# Check each runner: exists in API response AND status is online/idle/active
# A runner that registered but is not running will show as "offline".
# ---------------------------------------------------------------------------
while IFS= read -r name; do
  [[ -z "$name" ]] && continue

  # Look up runner by name in the API response
  local_status=$(printf '%s' "$API_RUNNERS" | jq -r --arg n "$name" '.[] | select(.name == $n) | .status' 2>/dev/null || true)

  if [[ -z "$local_status" ]]; then
    log_error "FAIL: Runner '${name}' not found in Gitea admin"
    FAIL=$((FAIL + 1))
  elif [[ "$local_status" == "offline" ]]; then
    log_error "FAIL: Runner '${name}' is registered but offline"
    FAIL=$((FAIL + 1))
  else
    log_success "Runner '${name}' is ${local_status}"
    PASS=$((PASS + 1))
  fi
done < <(ini_list_sections "$RUNNERS_CONF")

# ---------------------------------------------------------------------------
# Check: runner count matches runners.conf
# ---------------------------------------------------------------------------
EXPECTED_COUNT=$(ini_list_sections "$RUNNERS_CONF" | wc -l | xargs)
ACTUAL_COUNT=$(printf '%s' "$API_RUNNERS" | jq 'length' 2>/dev/null || echo 0)

if [[ "$ACTUAL_COUNT" -ge "$EXPECTED_COUNT" ]]; then
  log_success "Runner count OK: ${ACTUAL_COUNT} registered (${EXPECTED_COUNT} expected)"
  PASS=$((PASS + 1))
else
  log_error "FAIL: Only ${ACTUAL_COUNT} runners registered (expected ${EXPECTED_COUNT})"
  FAIL=$((FAIL + 1))
fi

# ---------------------------------------------------------------------------
# Summary
# ---------------------------------------------------------------------------
printf '\n'
log_info "Results: ${PASS} passed, ${FAIL} failed"

if [[ $FAIL -gt 0 ]]; then
  log_error "Phase 3 post-check FAILED"
  exit 1
else
  log_success "Phase 3 post-check PASSED — all runners are online"
  exit 0
fi