#!/bin/sh
set -e

# 환경변수에서 도메인 가져오기
DOMAIN=${DOMAIN:-exdev.co.kr}

echo "========================================"
echo "Golden Analysis Frontend (Let's Encrypt)"
echo "Domain: $DOMAIN"
echo "========================================"

# Let's Encrypt 인증서 경로
CERT_PATH="/etc/letsencrypt/live/$DOMAIN"

# 자체 서명 인증서 경로
SELF_SIGNED_PATH="/etc/nginx/ssl"

# 인증서가 존재하는지 확인
if [ -f "$CERT_PATH/fullchain.pem" ] && [ -f "$CERT_PATH/privkey.pem" ]; then
    echo "✅ Let's Encrypt SSL Certificate found. Enabling HTTPS..."
    
    # nginx 설정 템플릿에서 도메인 치환하여 적용
    envsubst '${DOMAIN}' < /etc/nginx/templates/default.conf.template > /etc/nginx/conf.d/default.conf
    
    echo "HTTPS configuration applied with Let's Encrypt certificate."
else
    echo "⚠️  Let's Encrypt SSL Certificate NOT found."
    echo "Generating self-signed certificate for HTTPS..."
    
    # 자체 서명 인증서 디렉토리 생성
    mkdir -p "$SELF_SIGNED_PATH"
    
    # 자체 서명 인증서 생성 (도메인과 localhost 모두 지원)
    if [ ! -f "$SELF_SIGNED_PATH/server.crt" ] || [ ! -f "$SELF_SIGNED_PATH/server.key" ]; then
        openssl req -x509 -nodes -days 3650 -newkey rsa:2048 \
            -keyout "$SELF_SIGNED_PATH/server.key" \
            -out "$SELF_SIGNED_PATH/server.crt" \
            -subj "/C=KR/ST=Seoul/L=Seoul/O=GoldenAnalysis/OU=Dev/CN=$DOMAIN" \
            -addext "subjectAltName=DNS:$DOMAIN,DNS:localhost,IP:127.0.0.1"
        echo "✅ Self-signed certificate generated."
    else
        echo "✅ Self-signed certificate already exists."
    fi
    
    # 자체 서명 인증서용 nginx 설정 생성
    cat > /etc/nginx/conf.d/default.conf << 'NGINX_CONF'
# WebSocket Upgrade 헤더 맵
map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
}
# HTTP 서버 (localhost와 원격 도메인 모두 지원)
server {
    listen 80;
    server_name _;
    
    # Let's Encrypt ACME challenge 경로
    location /.well-known/acme-challenge/ {
        root /var/www/certbot;
    }
    
    # localhost나 127.0.0.1로 접속 시 HTTP로 정상 서비스
    # 그 외 도메인은 HTTPS로 리다이렉트
    set $redirect_https 0;
    if ($host !~* ^(localhost|127\.0\.0\.1)$) {
        set $redirect_https 1;
    }
    if ($redirect_https = 1) {
        return 301 https://$host$request_uri;
    }
    
    root /usr/share/nginx/html;
    index index.html;
    
    # gzip 압축
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
    gzip_min_length 1000;
    
    # React Router를 위한 설정
    location / {
        try_files $uri $uri/ /index.html;
        
        location = /index.html {
            add_header Cache-Control "no-cache, no-store, must-revalidate";
            add_header Pragma "no-cache";
            add_header Expires "0";
        }
    }
    
    # AI Agent 프록시 (LangGraph 기반)
    location /api/agent/ {
        proxy_pass http://ai-agent:8000/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        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_cache_bypass $http_upgrade;
        proxy_read_timeout 300s;
        proxy_connect_timeout 75s;
        proxy_buffering off;
        
        add_header 'Access-Control-Allow-Origin' '$http_origin' always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;
        
        if ($request_method = 'OPTIONS') {
            add_header 'Access-Control-Allow-Origin' '$http_origin';
            add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS';
            add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization';
            add_header 'Access-Control-Max-Age' 1728000;
            add_header 'Content-Type' 'text/plain; charset=utf-8';
            add_header 'Content-Length' 0;
            return 204;
        }
    }
    
    # Market Data WebSocket 프록시 (실시간 차트용 - Python Broadcast Server)
    location /market-data/ {
        proxy_pass http://market-data-broadcast:8000/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        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_cache_bypass $http_upgrade;
        proxy_buffering off;
        proxy_connect_timeout 7d;
        proxy_send_timeout 7d;
        proxy_read_timeout 7d;
        add_header 'Access-Control-Allow-Origin' '$http_origin' always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;
    }
    
    # API 프록시 (Spring Boot 백엔드)
    location /api/ {
        proxy_pass http://backend:8082/api/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        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_cache_bypass $http_upgrade;
        proxy_read_timeout 300s;
        proxy_connect_timeout 75s;
        
        add_header 'Access-Control-Allow-Origin' '$http_origin' always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;
        
        if ($request_method = 'OPTIONS') {
            add_header 'Access-Control-Allow-Origin' '$http_origin';
            add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS';
            add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization';
            add_header 'Access-Control-Max-Age' 1728000;
            add_header 'Content-Type' 'text/plain; charset=utf-8';
            add_header 'Content-Length' 0;
            return 204;
        }
    }
    
    # 정적 파일 캐싱
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }
}

# HTTPS 서버 (자체 서명 인증서)
server {
    listen 443 ssl http2;
    server_name _;
    
    # 자체 서명 SSL 인증서 설정
    ssl_certificate /etc/nginx/ssl/server.crt;
    ssl_certificate_key /etc/nginx/ssl/server.key;
    
    # SSL 보안 설정
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
    ssl_prefer_server_ciphers off;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 1d;
    
    root /usr/share/nginx/html;
    index index.html;
    
    # gzip 압축
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
    gzip_min_length 1000;
    
    # React Router를 위한 설정
    location / {
        try_files $uri $uri/ /index.html;
        
        location = /index.html {
            add_header Cache-Control "no-cache, no-store, must-revalidate";
            add_header Pragma "no-cache";
            add_header Expires "0";
        }
    }
    
    # AI Agent 프록시 (LangGraph 기반)
    location /api/agent/ {
        proxy_pass http://ai-agent:8000/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        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_cache_bypass $http_upgrade;
        proxy_read_timeout 300s;
        proxy_connect_timeout 75s;
        proxy_buffering off;
        
        add_header 'Access-Control-Allow-Origin' '$http_origin' always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;
        
        if ($request_method = 'OPTIONS') {
            add_header 'Access-Control-Allow-Origin' '$http_origin';
            add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS';
            add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization';
            add_header 'Access-Control-Max-Age' 1728000;
            add_header 'Content-Type' 'text/plain; charset=utf-8';
            add_header 'Content-Length' 0;
            return 204;
        }
    }
    
    # Market Data WebSocket 프록시 (실시간 차트용 - Python Broadcast Server)
    location /market-data/ {
        proxy_pass http://market-data-broadcast:8000/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        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_cache_bypass $http_upgrade;
        proxy_buffering off;
        proxy_connect_timeout 7d;
        proxy_send_timeout 7d;
        proxy_read_timeout 7d;
        add_header 'Access-Control-Allow-Origin' '$http_origin' always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;
    }
    
    # API 프록시 (Spring Boot 백엔드)
    location /api/ {
        proxy_pass http://backend:8082/api/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        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_cache_bypass $http_upgrade;
        proxy_read_timeout 300s;
        proxy_connect_timeout 75s;
        
        add_header 'Access-Control-Allow-Origin' '$http_origin' always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;
        
        if ($request_method = 'OPTIONS') {
            add_header 'Access-Control-Allow-Origin' '$http_origin';
            add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS';
            add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization';
            add_header 'Access-Control-Max-Age' 1728000;
            add_header 'Content-Type' 'text/plain; charset=utf-8';
            add_header 'Content-Length' 0;
            return 204;
        }
    }
    
    # 정적 파일 캐싱
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }
}
NGINX_CONF
    
    echo "HTTPS configuration applied with self-signed certificate."
    echo ""
    echo "⚠️  브라우저에서 인증서 경고가 표시됩니다 (자체 서명 인증서)."
    echo ""
    echo "📋 Let's Encrypt 인증서 발급 방법:"
    echo "  docker exec golden-analysis-certbot certbot certonly --webroot -w /var/www/certbot -d $DOMAIN --email your-email@example.com --agree-tos --non-interactive"
    echo ""
    echo "인증서 발급 후 컨테이너를 재시작하세요."
fi

echo ""
echo "Starting Nginx..."
exec "$@"