// Package client provides a Go client for interacting with the MCIAS (Metacircular Identity and Access System).
package client

import (
	"net/http"
	"time"
)

// Client is the main struct for interacting with the MCIAS API.
type Client struct {
	// BaseURL is the base URL of the MCIAS server.
	BaseURL string

	// HTTPClient is the HTTP client used for making requests.
	HTTPClient *http.Client

	// Token is the authentication token.
	Token string

	// Username is the authenticated username.
	Username string
}

// ClientOption is a function that configures a Client.
type ClientOption func(*Client)

// WithBaseURL sets the base URL for the client.
func WithBaseURL(baseURL string) ClientOption {
	return func(c *Client) {
		c.BaseURL = baseURL
	}
}

// WithHTTPClient sets the HTTP client for the client.
func WithHTTPClient(httpClient *http.Client) ClientOption {
	return func(c *Client) {
		c.HTTPClient = httpClient
	}
}

// WithToken sets the authentication token for the client.
func WithToken(token string) ClientOption {
	return func(c *Client) {
		c.Token = token
	}
}

// WithUsername sets the username for the client.
func WithUsername(username string) ClientOption {
	return func(c *Client) {
		c.Username = username
	}
}

// NewClient creates a new MCIAS client with the given options.
func NewClient(options ...ClientOption) *Client {
	client := &Client{
		BaseURL: "http://localhost:8080",
		HTTPClient: &http.Client{
			Timeout: 10 * time.Second,
		},
	}

	for _, option := range options {
		option(client)
	}

	return client
}

// IsAuthenticated returns true if the client has a token.
func (c *Client) IsAuthenticated() bool {
	return c.Token != ""
}