package main

import (
	"fmt"
	"net"
	"strconv"
	"strings"
	"time"

	"github.com/gesellix/bose-soundtouch/pkg/client"
	"github.com/gesellix/bose-soundtouch/pkg/config"
	"github.com/urfave/cli/v2"
)

// CommonFlags defines flags that are shared across multiple commands
var CommonFlags = []cli.Flag{
	&cli.StringFlag{
		Name:    "host",
		Usage:   "SoundTouch device host/IP address (can include port like host:8090)",
		EnvVars: []string{"SOUNDTOUCH_HOST"},
	},
	&cli.IntFlag{
		Name:    "port",
		Aliases: []string{"p"},
		Usage:   "SoundTouch device port",
		Value:   8090,
		EnvVars: []string{"SOUNDTOUCH_PORT"},
	},
	&cli.DurationFlag{
		Name:    "timeout",
		Aliases: []string{"t"},
		Usage:   "Request timeout",
		Value:   10 * time.Second,
	},
}

// ClientConfig holds configuration for creating a SoundTouch client
type ClientConfig struct {
	Host    string
	Port    int
	Timeout time.Duration
}

// GetClientConfig extracts client configuration from CLI context
func GetClientConfig(c *cli.Context) *ClientConfig {
	host := c.String("host")
	port := c.Int("port")
	timeout := c.Duration("timeout")

	// Parse host:port if host contains a port
	if host != "" {
		if finalHost, finalPort := parseHostPort(host, port); finalHost != "" {
			host = finalHost
			port = finalPort
		}
	}

	return &ClientConfig{
		Host:    host,
		Port:    port,
		Timeout: timeout,
	}
}

// RequireHost validates that a host is provided for commands that need it
func RequireHost(c *cli.Context) error {
	if c.String("host") == "" {
		return fmt.Errorf("host is required. Use --host flag or set SOUNDTOUCH_HOST environment variable")
	}

	return nil
}

// CreateSoundTouchClient creates a configured SoundTouch client
func CreateSoundTouchClient(config *ClientConfig) (*client.Client, error) {
	cfg, err := loadConfig(config.Timeout)
	if err != nil {
		return nil, fmt.Errorf("failed to load config: %w", err)
	}

	clientConfig := &client.Config{
		Host:      config.Host,
		Port:      config.Port,
		Timeout:   cfg.HTTPTimeout,
		UserAgent: cfg.UserAgent,
	}

	return client.NewClient(clientConfig), nil
}

// loadConfig loads the application configuration with optional timeout override
func loadConfig(timeout time.Duration) (*config.Config, error) {
	cfg, err := config.LoadFromEnv()
	if err != nil {
		return nil, err
	}

	// Override timeout if provided
	if timeout > 0 {
		cfg.HTTPTimeout = timeout
	}

	return cfg, nil
}

// parseHostPort splits a host:port string into separate host and port components
// If no port is specified, returns the original host and the provided default port
func parseHostPort(hostPort string, defaultPort int) (string, int) {
	// Check if host contains a port (has a colon)
	if strings.Contains(hostPort, ":") {
		host, portStr, err := net.SplitHostPort(hostPort)
		if err != nil {
			// If parsing fails, return original host and default port
			return hostPort, defaultPort
		}

		port, err := strconv.Atoi(portStr)
		if err != nil || port < 1 || port > 65535 {
			// If port parsing fails or is invalid, return host and default port
			return host, defaultPort
		}

		return host, port
	}

	// No port specified, return original host and default port
	return hostPort, defaultPort
}

// PrintDeviceHeader prints a standard header for device commands
func PrintDeviceHeader(operation, host string, port int) {
	fmt.Printf("%s from %s:%d...\n", operation, host, port)
}

// PrintSuccess prints a standard success message
func PrintSuccess(message string) {
	fmt.Printf("✓ %s\n", message)
}

// PrintError prints a standard error message
func PrintError(message string) {
	fmt.Printf("✗ %s\n", message)
}

// PrintWarning prints a standard warning message
func PrintWarning(message string) {
	fmt.Printf("⚠️  %s\n", message)
}