# Local Ginxsom Development Server Configuration
# Comprehensive Blossom Protocol Implementation

# Main context - specify error log here to override system default
error_log logs/error.log debug;
pid logs/nginx.pid;

events {
    worker_connections 1024;
}

# HTTP context
http {
    # Basic settings
    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;
    
    # MIME types (local)
    include mime.types;
    default_type application/octet-stream;
    
    # Logging (relative to prefix directory)
    access_log logs/access.log;
    
    # FastCGI upstream configuration
    upstream fastcgi_backend {
        server unix:/tmp/ginxsom-fcgi.sock;
    }
    
    # Local development server
    server {
        listen 9001;
        server_name localhost;
        
        # Root directory for blossom files (local blobs directory)
        root blobs;
        
        # Maximum upload size (adjust as needed)
        client_max_body_size 100M;
        
        # Security headers (applied to all responses)
        add_header X-Content-Type-Options nosniff;
        add_header X-Frame-Options DENY;
        add_header X-XSS-Protection "1; mode=block";
        
        # 1. SPECIFIC ENDPOINTS (most specific first)
        
        # PUT /upload (BUD-02) - File uploads
        location = /upload {
            if ($request_method !~ ^(PUT|HEAD)$) {
                return 405;
            }
            fastcgi_param QUERY_STRING $query_string;
            fastcgi_param REQUEST_METHOD $request_method;
            fastcgi_param CONTENT_TYPE $content_type;
            fastcgi_param CONTENT_LENGTH $content_length;
            fastcgi_param SCRIPT_NAME $fastcgi_script_name;
            fastcgi_param REQUEST_URI $request_uri;
            fastcgi_param DOCUMENT_URI $document_uri;
            fastcgi_param DOCUMENT_ROOT $document_root;
            fastcgi_param SERVER_PROTOCOL $server_protocol;
            fastcgi_param REQUEST_SCHEME $scheme;
            fastcgi_param HTTPS $https if_not_empty;
            fastcgi_param GATEWAY_INTERFACE CGI/1.1;
            fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;
            fastcgi_param REMOTE_ADDR $remote_addr;
            fastcgi_param REMOTE_PORT $remote_port;
            fastcgi_param SERVER_ADDR $server_addr;
            fastcgi_param SERVER_PORT $server_port;
            fastcgi_param SERVER_NAME $server_name;
            fastcgi_param REDIRECT_STATUS 200;
            fastcgi_param SCRIPT_FILENAME $document_root/ginxsom.fcgi;
            fastcgi_pass fastcgi_backend;
        }
        
        # GET /list/<pubkey> (BUD-02) - List user's blobs
        location ~ "^/list/([a-f0-9]{64})$" {
            if ($request_method !~ ^(GET)$) {
                return 405;
            }
            fastcgi_param QUERY_STRING $query_string;
            fastcgi_param REQUEST_METHOD $request_method;
            fastcgi_param CONTENT_TYPE $content_type;
            fastcgi_param CONTENT_LENGTH $content_length;
            fastcgi_param SCRIPT_NAME $fastcgi_script_name;
            fastcgi_param REQUEST_URI $request_uri;
            fastcgi_param DOCUMENT_URI $document_uri;
            fastcgi_param DOCUMENT_ROOT $document_root;
            fastcgi_param SERVER_PROTOCOL $server_protocol;
            fastcgi_param REQUEST_SCHEME $scheme;
            fastcgi_param HTTPS $https if_not_empty;
            fastcgi_param GATEWAY_INTERFACE CGI/1.1;
            fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;
            fastcgi_param REMOTE_ADDR $remote_addr;
            fastcgi_param REMOTE_PORT $remote_port;
            fastcgi_param SERVER_ADDR $server_addr;
            fastcgi_param SERVER_PORT $server_port;
            fastcgi_param SERVER_NAME $server_name;
            fastcgi_param REDIRECT_STATUS 200;
            fastcgi_param SCRIPT_FILENAME $document_root/ginxsom.fcgi;
            fastcgi_pass fastcgi_backend;
        }
        
        # PUT /mirror (BUD-04) - Mirror content
        location = /mirror {
            if ($request_method !~ ^(PUT)$) {
                return 405;
            }
            fastcgi_param QUERY_STRING $query_string;
            fastcgi_param REQUEST_METHOD $request_method;
            fastcgi_param CONTENT_TYPE $content_type;
            fastcgi_param CONTENT_LENGTH $content_length;
            fastcgi_param SCRIPT_NAME $fastcgi_script_name;
            fastcgi_param REQUEST_URI $request_uri;
            fastcgi_param DOCUMENT_URI $document_uri;
            fastcgi_param DOCUMENT_ROOT $document_root;
            fastcgi_param SERVER_PROTOCOL $server_protocol;
            fastcgi_param REQUEST_SCHEME $scheme;
            fastcgi_param HTTPS $https if_not_empty;
            fastcgi_param GATEWAY_INTERFACE CGI/1.1;
            fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;
            fastcgi_param REMOTE_ADDR $remote_addr;
            fastcgi_param REMOTE_PORT $remote_port;
            fastcgi_param SERVER_ADDR $server_addr;
            fastcgi_param SERVER_PORT $server_port;
            fastcgi_param SERVER_NAME $server_name;
            fastcgi_param REDIRECT_STATUS 200;
            fastcgi_param SCRIPT_FILENAME $document_root/ginxsom.fcgi;
            fastcgi_pass fastcgi_backend;
        }
        
        # HEAD/PUT /media (BUD-05) - Media operations
        location = /media {
            if ($request_method !~ ^(HEAD|PUT)$) {
                return 405;
            }
            fastcgi_param QUERY_STRING $query_string;
            fastcgi_param REQUEST_METHOD $request_method;
            fastcgi_param CONTENT_TYPE $content_type;
            fastcgi_param CONTENT_LENGTH $content_length;
            fastcgi_param SCRIPT_NAME $fastcgi_script_name;
            fastcgi_param REQUEST_URI $request_uri;
            fastcgi_param DOCUMENT_URI $document_uri;
            fastcgi_param DOCUMENT_ROOT $document_root;
            fastcgi_param SERVER_PROTOCOL $server_protocol;
            fastcgi_param REQUEST_SCHEME $scheme;
            fastcgi_param HTTPS $https if_not_empty;
            fastcgi_param GATEWAY_INTERFACE CGI/1.1;
            fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;
            fastcgi_param REMOTE_ADDR $remote_addr;
            fastcgi_param REMOTE_PORT $remote_port;
            fastcgi_param SERVER_ADDR $server_addr;
            fastcgi_param SERVER_PORT $server_port;
            fastcgi_param SERVER_NAME $server_name;
            fastcgi_param REDIRECT_STATUS 200;
            fastcgi_param SCRIPT_FILENAME $document_root/ginxsom.fcgi;
            fastcgi_pass fastcgi_backend;
        }
        
        # PUT /report (BUD-09) - Report content
        location = /report {
            if ($request_method !~ ^(PUT)$) {
                return 405;
            }
            fastcgi_param QUERY_STRING $query_string;
            fastcgi_param REQUEST_METHOD $request_method;
            fastcgi_param CONTENT_TYPE $content_type;
            fastcgi_param CONTENT_LENGTH $content_length;
            fastcgi_param SCRIPT_NAME $fastcgi_script_name;
            fastcgi_param REQUEST_URI $request_uri;
            fastcgi_param DOCUMENT_URI $document_uri;
            fastcgi_param DOCUMENT_ROOT $document_root;
            fastcgi_param SERVER_PROTOCOL $server_protocol;
            fastcgi_param REQUEST_SCHEME $scheme;
            fastcgi_param HTTPS $https if_not_empty;
            fastcgi_param GATEWAY_INTERFACE CGI/1.1;
            fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;
            fastcgi_param REMOTE_ADDR $remote_addr;
            fastcgi_param REMOTE_PORT $remote_port;
            fastcgi_param SERVER_ADDR $server_addr;
            fastcgi_param SERVER_PORT $server_port;
            fastcgi_param SERVER_NAME $server_name;
            fastcgi_param REDIRECT_STATUS 200;
            fastcgi_param SCRIPT_FILENAME $document_root/ginxsom.fcgi;
            fastcgi_pass fastcgi_backend;
        }
        
        # GET /auth (NIP-42) - Challenge generation
        location = /auth {
            if ($request_method !~ ^(GET|OPTIONS)$) {
                return 405;
            }
            
            # Handle preflight OPTIONS requests for CORS
            if ($request_method = OPTIONS) {
                add_header Access-Control-Allow-Origin *;
                add_header Access-Control-Allow-Methods "GET, OPTIONS";
                add_header Access-Control-Allow-Headers "Content-Type, Authorization";
                add_header Access-Control-Max-Age 86400;
                return 204;
            }
            
            fastcgi_param QUERY_STRING $query_string;
            fastcgi_param REQUEST_METHOD $request_method;
            fastcgi_param CONTENT_TYPE $content_type;
            fastcgi_param CONTENT_LENGTH $content_length;
            fastcgi_param SCRIPT_NAME $fastcgi_script_name;
            fastcgi_param REQUEST_URI $request_uri;
            fastcgi_param DOCUMENT_URI $document_uri;
            fastcgi_param DOCUMENT_ROOT $document_root;
            fastcgi_param SERVER_PROTOCOL $server_protocol;
            fastcgi_param REQUEST_SCHEME $scheme;
            fastcgi_param HTTPS $https if_not_empty;
            fastcgi_param GATEWAY_INTERFACE CGI/1.1;
            fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;
            fastcgi_param REMOTE_ADDR $remote_addr;
            fastcgi_param REMOTE_PORT $remote_port;
            fastcgi_param SERVER_ADDR $server_addr;
            fastcgi_param SERVER_PORT $server_port;
            fastcgi_param SERVER_NAME $server_name;
            fastcgi_param REDIRECT_STATUS 200;
            fastcgi_param SCRIPT_FILENAME $document_root/ginxsom.fcgi;
            fastcgi_pass fastcgi_backend;
            
            # CORS headers for NIP-42 access
            add_header Access-Control-Allow-Origin *;
            add_header Access-Control-Allow-Methods "GET, OPTIONS";
            add_header Access-Control-Allow-Headers "Content-Type, Authorization";
        }

        # Admin API endpoints (/api/*)
        location /api/ {
            # Handle preflight OPTIONS requests for CORS
            if ($request_method = OPTIONS) {
                add_header Access-Control-Allow-Origin *;
                add_header Access-Control-Allow-Methods "GET, PUT, OPTIONS";
                add_header Access-Control-Allow-Headers "Content-Type, Authorization";
                add_header Access-Control-Max-Age 86400;
                return 204;
            }

            if ($request_method !~ ^(GET|PUT)$) {
                return 405;
            }

            fastcgi_param QUERY_STRING $query_string;
            fastcgi_param REQUEST_METHOD $request_method;
            fastcgi_param CONTENT_TYPE $content_type;
            fastcgi_param CONTENT_LENGTH $content_length;
            fastcgi_param SCRIPT_NAME $fastcgi_script_name;
            fastcgi_param REQUEST_URI $request_uri;
            fastcgi_param DOCUMENT_URI $document_uri;
            fastcgi_param DOCUMENT_ROOT $document_root;
            fastcgi_param SERVER_PROTOCOL $server_protocol;
            fastcgi_param REQUEST_SCHEME $scheme;
            fastcgi_param HTTPS $https if_not_empty;
            fastcgi_param GATEWAY_INTERFACE CGI/1.1;
            fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;
            fastcgi_param REMOTE_ADDR $remote_addr;
            fastcgi_param REMOTE_PORT $remote_port;
            fastcgi_param SERVER_ADDR $server_addr;
            fastcgi_param SERVER_PORT $server_port;
            fastcgi_param SERVER_NAME $server_name;
            fastcgi_param REDIRECT_STATUS 200;
            fastcgi_param SCRIPT_FILENAME $document_root/ginxsom.fcgi;

            # Support for Authorization header
            fastcgi_param HTTP_AUTHORIZATION $http_authorization;

            fastcgi_pass fastcgi_backend;

            # CORS headers for API access
            add_header Access-Control-Allow-Origin *;
            add_header Access-Control-Allow-Methods "GET, PUT, OPTIONS";
            add_header Access-Control-Allow-Headers "Content-Type, Authorization";
            add_header Access-Control-Max-Age 86400;
        }
        
        # 2. BLOB OPERATIONS (SHA256 patterns)
        
        # GET/HEAD/DELETE /<sha256> (BUD-01) - Blob operations with optional file extensions
        location ~ "^/([a-f0-9]{64})(\.[a-zA-Z0-9]+)?$" {
            # Handle DELETE method via rewrite to avoid fastcgi_param in if block
            if ($request_method = DELETE) {
                rewrite ^/(.*)$ /fcgi-delete/$1 last;
            }
            
            # Route HEAD requests to FastCGI for metadata
            if ($request_method = HEAD) {
                rewrite ^/(.*)$ /fcgi-head/$1 last;
            }
            
            # Only allow GET for file serving at this point
            if ($request_method != GET) {
                return 405;
            }
            
            # GET requests - serve files directly with extension fallback
            try_files /$1.txt /$1.jpg /$1.jpeg /$1.png /$1.webp /$1.gif /$1.pdf /$1.mp4 /$1.mp3 /$1.md =404;
            
            # Cache headers for blob content
            add_header Cache-Control "public, max-age=31536000, immutable";
        }
        
        # Internal handler for DELETE operations
        location ~ "^/fcgi-delete/([a-f0-9]{64}).*$" {
            internal;
            fastcgi_pass fastcgi_backend;
            fastcgi_param QUERY_STRING $query_string;
            fastcgi_param REQUEST_METHOD DELETE;
            fastcgi_param CONTENT_TYPE $content_type;
            fastcgi_param CONTENT_LENGTH $content_length;
            fastcgi_param SCRIPT_NAME $fastcgi_script_name;
            fastcgi_param REQUEST_URI /$1;
            fastcgi_param DOCUMENT_URI /$1;
            fastcgi_param DOCUMENT_ROOT $document_root;
            fastcgi_param SERVER_PROTOCOL $server_protocol;
            fastcgi_param REQUEST_SCHEME $scheme;
            fastcgi_param HTTPS $https if_not_empty;
            fastcgi_param GATEWAY_INTERFACE CGI/1.1;
            fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;
            fastcgi_param REMOTE_ADDR $remote_addr;
            fastcgi_param REMOTE_PORT $remote_port;
            fastcgi_param SERVER_ADDR $server_addr;
            fastcgi_param SERVER_PORT $server_port;
            fastcgi_param SERVER_NAME $server_name;
            fastcgi_param REDIRECT_STATUS 200;
            fastcgi_param SCRIPT_FILENAME $document_root/ginxsom.fcgi;
        }
        
        # 3. INTERNAL HANDLERS
        
        # FastCGI handler for HEAD requests
        location ~ "^/fcgi-head/([a-f0-9]{64}).*$" {
            internal;
            fastcgi_pass fastcgi_backend;
            fastcgi_param REQUEST_METHOD HEAD;
            fastcgi_param REQUEST_URI /$1;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            fastcgi_param QUERY_STRING $query_string;
            fastcgi_param CONTENT_TYPE $content_type;
            fastcgi_param CONTENT_LENGTH $content_length;
            fastcgi_param SERVER_PROTOCOL $server_protocol;
            fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;
            fastcgi_param REMOTE_ADDR $remote_addr;
            fastcgi_param REMOTE_PORT $remote_port;
            fastcgi_param SERVER_ADDR $server_addr;
            fastcgi_param SERVER_PORT $server_port;
            fastcgi_param SERVER_NAME $server_name;
        }
        
        # 4. UTILITY ENDPOINTS
        
        # Health check endpoint
        location /health {
            access_log off;
            return 200 "OK\n";
            add_header Content-Type text/plain;
        }
        
        # List files endpoint for debugging
        location /debug/list {
            autoindex on;
            autoindex_format json;
        }
        
        # Root redirect
        location = / {
            return 200 "Ginxsom Blossom Server\nEndpoints: GET /<sha256>, PUT /upload, GET /list/<pubkey>\nHealth: GET /health\n";
            add_header Content-Type text/plain;
        }
    }
}