#!/usr/bin/env bash
# Public URL prereq checks for cWUSDC Etherscan token profile (d-bis.org surfaces).
# See: docs/04-configuration/etherscan/CWUSDC_ETHERSCAN_E2E_RECOMMENDATIONS.md
# Usage: bash scripts/verify/check-cwusdc-etherscan-prereq-urls.sh [--json-out PATH] [--md-out PATH] [--timeout SEC] [--retries N]
# Exit: 0 if every URL returns HTTP 200; 1 otherwise.

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
cd "$PROJECT_ROOT"

JSON_OUT=""
MD_OUT=""
TIMEOUT="${CWUSDC_PROVIDER_URL_TIMEOUT:-15}"
RETRIES="${CWUSDC_PROVIDER_URL_RETRIES:-1}"
while [[ $# -gt 0 ]]; do
  case "$1" in
    --json-out)
      [[ $# -ge 2 ]] || { echo "Missing value for --json-out" >&2; exit 1; }
      JSON_OUT="$2"
      shift 2
      ;;
    --md-out)
      [[ $# -ge 2 ]] || { echo "Missing value for --md-out" >&2; exit 1; }
      MD_OUT="$2"
      shift 2
      ;;
    --timeout)
      [[ $# -ge 2 ]] || { echo "Missing value for --timeout" >&2; exit 1; }
      TIMEOUT="$2"
      shift 2
      ;;
    --retries)
      [[ $# -ge 2 ]] || { echo "Missing value for --retries" >&2; exit 1; }
      RETRIES="$2"
      shift 2
      ;;
    -h|--help)
      sed -n '1,5p' "$0"
      exit 0
      ;;
    *)
      echo "Unknown argument: $1" >&2
      exit 1
      ;;
  esac
done

TMP_TSV="$(mktemp)"
trap 'rm -f "$TMP_TSV"' EXIT

FAIL=0
while IFS= read -r url; do
  [[ -z "$url" || "$url" =~ ^# ]] && continue
  code="000"
  curl_status=0
  attempts=0
  max_attempts=$((RETRIES + 1))
  while [[ "$attempts" -lt "$max_attempts" ]]; do
    attempts=$((attempts + 1))
    curl_status=0
    code=$(curl -L --max-time "$TIMEOUT" -o /dev/null -s -w "%{http_code}" "$url") || curl_status=$?
    [[ -n "$code" ]] || code="000"
    [[ "$code" == "200" ]] && break
    [[ "$attempts" -lt "$max_attempts" ]] && sleep 1
  done
  if [[ "$code" != "200" ]]; then
    echo "FAIL $code $url (attempts=$attempts curl_status=$curl_status)" >&2
    FAIL=1
    printf '%s\t%s\t%s\t%s\t%s\n' "$url" "$code" "false" "$attempts" "$curl_status" >> "$TMP_TSV"
  else
    echo "OK 200 $url (attempts=$attempts)"
    printf '%s\t%s\t%s\t%s\t%s\n' "$url" "$code" "true" "$attempts" "$curl_status" >> "$TMP_TSV"
  fi
done <<'URLS'
https://d-bis.org/
https://d-bis.org/contact
https://d-bis.org/leadership
https://d-bis.org/gru/tokens
https://d-bis.org/security
https://d-bis.org/.well-known/trust.json
https://d-bis.org/brand-assets
https://d-bis.org/tokens/cwusdc.svg
URLS

if [[ -n "$JSON_OUT" || -n "$MD_OUT" ]]; then
  python3 - "$TMP_TSV" "$JSON_OUT" "$MD_OUT" <<'PY'
import json
import sys
from datetime import datetime, timezone
from pathlib import Path

tsv = Path(sys.argv[1])
json_out = Path(sys.argv[2]) if sys.argv[2] else None
md_out = Path(sys.argv[3]) if sys.argv[3] else None

checks = []
for line in tsv.read_text().splitlines():
    url, status, passed, attempts, curl_status = line.split("\t")
    checks.append({
        "url": url,
        "status": int(status) if status.isdigit() else status,
        "passed": passed == "true",
        "attempts": int(attempts),
        "curlStatus": int(curl_status),
    })

payload = {
    "schema": "cwusdc-etherscan-prereq-urls/v1",
    "generatedAt": datetime.now(timezone.utc).isoformat(),
    "summary": {
        "allPassed": all(check["passed"] for check in checks),
        "requiredCount": len(checks),
        "passedCount": sum(1 for check in checks if check["passed"]),
        "failedUrls": [check["url"] for check in checks if not check["passed"]],
    },
    "checks": checks,
}

if json_out:
    json_out.parent.mkdir(parents=True, exist_ok=True)
    json_out.write_text(json.dumps(payload, indent=2) + "\n")
    print(f"Wrote {json_out}")

if md_out:
    md_out.parent.mkdir(parents=True, exist_ok=True)
    lines = [
        "# cWUSDC Etherscan Prerequisite URL Evidence",
        "",
        f"- Generated: `{payload['generatedAt']}`",
        f"- All passed: `{payload['summary']['allPassed']}`",
        f"- Passed: `{payload['summary']['passedCount']} / {payload['summary']['requiredCount']}`",
        "",
        "| URL | Passed | HTTP | Attempts | curl status |",
        "|---|---:|---:|---:|---:|",
    ]
    for check in checks:
        lines.append(f"| {check['url']} | `{check['passed']}` | `{check['status']}` | `{check['attempts']}` | `{check['curlStatus']}` |")
    md_out.write_text("\n".join(lines) + "\n")
    print(f"Wrote {md_out}")
PY
fi

exit "$FAIL"