package websocket

import (
	"encoding/json"
	"net/http"
)

type RelayInfo struct {
	Name          string   `json:"name"`
	Description   string   `json:"description"`
	Pubkey        string   `json:"pubkey,omitempty"`
	Contact       string   `json:"contact,omitempty"`
	SupportedNIPs []int    `json:"supported_nips"`
	Software      string   `json:"software"`
	Version       string   `json:"version"`
	Limitation    *Limits  `json:"limitation,omitempty"`
}

type Limits struct {
	MaxMessageLength    int  `json:"max_message_length,omitempty"`
	MaxSubscriptions    int  `json:"max_subscriptions,omitempty"`
	MaxFilters          int  `json:"max_filters,omitempty"`
	MaxLimit            int  `json:"max_limit,omitempty"`
	MaxSubidLength      int  `json:"max_subid_length,omitempty"`
	MaxEventTags        int  `json:"max_event_tags,omitempty"`
	MaxContentLength    int  `json:"max_content_length,omitempty"`
	MinPowDifficulty    int  `json:"min_pow_difficulty,omitempty"`
	AuthRequired        bool `json:"auth_required"`
	PaymentRequired     bool `json:"payment_required"`
	RestrictedWrites    bool `json:"restricted_writes"`
}

func (h *Handler) ServeNIP11(w http.ResponseWriter, r *http.Request) {
	info := RelayInfo{
		Name:          "nostr-grpc relay",
		Description:   "High-performance Nostr relay with gRPC, Connect, and WebSocket support",
		SupportedNIPs: []int{1, 9, 11},
		Software:      "northwest.io/nostr-grpc",
		Version:       "0.1.0",
		Limitation: &Limits{
			MaxMessageLength: 65536,
			MaxSubscriptions: 20,
			MaxFilters:       10,
			MaxLimit:         5000,
			MaxSubidLength:   64,
			MaxEventTags:     2000,
			MaxContentLength: 65536,
			AuthRequired:     false,
			PaymentRequired:  false,
			RestrictedWrites: false,
		},
	}

	w.Header().Set("Content-Type", "application/nostr+json")
	w.Header().Set("Access-Control-Allow-Origin", "*")
	w.Header().Set("Access-Control-Allow-Headers", "Content-Type, Accept")
	w.Header().Set("Access-Control-Allow-Methods", "GET")

	json.NewEncoder(w).Encode(info)
}