#!/usr/bin/env bash
# Ensure the explorer nginx HTTP server block proxies /api/v1/ to token-aggregation.
# Run inside VMID 5000.

set -euo pipefail

CONFIG_FILE="${CONFIG_FILE:-/etc/nginx/sites-available/blockscout}"
TOKEN_AGG_PORT="${TOKEN_AGG_PORT:-3001}"

if [[ ! -f "$CONFIG_FILE" ]]; then
  echo "Config not found: $CONFIG_FILE" >&2
  exit 1
fi

python3 - "$CONFIG_FILE" "$TOKEN_AGG_PORT" <<'PY'
from pathlib import Path
import sys

cfg = Path(sys.argv[1])
port = sys.argv[2]
text = cfg.read_text()

parts = text.split("# HTTPS server - Blockscout Explorer", 1)
if len(parts) != 2:
    raise SystemExit("Could not locate HTTP/HTTPS server boundary")

http_block, https_block = parts

if "location /api/v1/" in http_block:
    print("HTTP block already has /api/v1/")
    raise SystemExit(0)

marker = "    # Blockscout API endpoint - MUST come before the redirect location\n"
if marker not in http_block:
    raise SystemExit("HTTP block marker not found")

snippet = f"""    # Token-aggregation API (Chain 138 Snap: market data, swap quote, bridge routes)
    location /api/v1/ {{
        proxy_pass http://127.0.0.1:{port}/api/v1/;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_read_timeout 60s;
        add_header Access-Control-Allow-Origin *;
    }}

    # Blockscout API endpoint - MUST come before the redirect location
"""

http_block = http_block.replace(marker, snippet, 1)
cfg.write_text(http_block + "# HTTPS server - Blockscout Explorer" + https_block)
print(f"Inserted HTTP /api/v1/ proxy to 127.0.0.1:{port}")
PY

nginx -t
nginx -s reload