protocol

type ClientCapabilities struct {
	Sampling    *SamplingCapability    `json:"sampling,omitempty"`
	Roots       *RootsCapability       `json:"roots,omitempty"`
	Elicitation *ElicitationCapability `json:"elicitation,omitempty"`
}

type ClientInfo struct {
	Name    string `json:"name"`
	Version string `json:"version"`
}

type ElicitationCapability struct{} // Placeholder, not used in Phase 1

type InitializeRequest struct {
	ProtocolVersion string             `json:"protocolVersion"`
	Capabilities    ClientCapabilities `json:"capabilities"`
	ClientInfo      ClientInfo         `json:"clientInfo"`
}

type InitializeResponse struct {
	ProtocolVersion string             `json:"protocolVersion"`
	Capabilities    ServerCapabilities `json:"capabilities"`
	ServerInfo      ServerInfo         `json:"serverInfo"`
}

type InitializedNotification struct {
}

type InputSchema struct {
	Type       string              `json:"type"`
	Properties map[string]Property `json:"properties"`
	Required   []string            `json:"required,omitempty"`
}

type Items struct {
	Type string `json:"type"`
}

type JSONRPCError struct {
	Code    int             `json:"code"`
	Message string          `json:"message"`
	Data    json.RawMessage `json:"data,omitempty"`
}

type JSONRPCNotification struct {
	JSONRPC string          `json:"jsonrpc"`
	Method  string          `json:"method"`
	Params  json.RawMessage `json:"params,omitempty"`
}

type JSONRPCRequest struct {
	JSONRPC string          `json:"jsonrpc"` // Must be "2.0"
	ID      any             `json:"id"`      // string, number, or null
	Method  string          `json:"method"`
	Params  json.RawMessage `json:"params,omitempty"`
}

type JSONRPCResponse struct {
	JSONRPC string          `json:"jsonrpc"` // Must be "2.0"
	ID      any             `json:"id"`
	Result  json.RawMessage `json:"result,omitempty"`
	Error   *JSONRPCError   `json:"error,omitempty"`
}

type PromptsCapability struct {
	ListChanged bool `json:"listChanged,omitempty"` // Phase 5
}

type Property struct {
	Type        string   `json:"type"`
	Description string   `json:"description,omitempty"`
	Items       *Items   `json:"items,omitempty"` // For array types
	Default     any      `json:"default,omitempty"`
	Minimum     *int     `json:"minimum,omitempty"`
	Maximum     *int     `json:"maximum,omitempty"`
	Enum        []string `json:"enum,omitempty"`
}

type Resource struct {
	URI         string `json:"uri"`
	Name        string `json:"name"`
	Description string `json:"description,omitempty"`
	MimeType    string `json:"mimeType,omitempty"`
}

type ResourceContent struct {
	URI      string `json:"uri"`
	MimeType string `json:"mimeType,omitempty"`
	Text     string `json:"text,omitempty"`
	Blob     string `json:"blob,omitempty"` // Base64-encoded binary data
}

type ResourcesCapability struct {
	Subscribe   bool `json:"subscribe,omitempty"`   // Phase 5
	ListChanged bool `json:"listChanged,omitempty"` // Phase 5
}

type ResourcesListResponse struct {
	Resources []Resource `json:"resources"`
}

type ResourcesReadRequest struct {
	URI string `json:"uri"`
}

type ResourcesReadResponse struct {
	Contents []ResourceContent `json:"contents"`
}

type RootsCapability struct{} // Placeholder, not used in Phase 1

type SamplingCapability struct{} // Placeholder, not used in Phase 1

type ServerCapabilities struct {
	Resources *ResourcesCapability `json:"resources,omitempty"`
	Tools     *ToolsCapability     `json:"tools,omitempty"`
	Prompts   *PromptsCapability   `json:"prompts,omitempty"`
}

type ServerInfo struct {
	Name    string `json:"name"`
	Version string `json:"version"`
}

type Tool struct {
	Name        string      `json:"name"`
	Description string      `json:"description"`
	InputSchema InputSchema `json:"inputSchema"`
}

type ToolContent struct {
	Type string `json:"type"` // "text", "image", "resource"
	Text string `json:"text,omitempty"`
}

type ToolsCallRequest struct {
	Name      string          `json:"name"`
	Arguments json.RawMessage `json:"arguments,omitempty"`
}

type ToolsCallResponse struct {
	Content []ToolContent `json:"content"`
	IsError bool          `json:"isError,omitempty"`
}

type ToolsCapability struct {
	ListChanged bool `json:"listChanged,omitempty"` // Phase 5
}

type ToolsListResponse struct {
	Tools []Tool `json:"tools"`
}