package cmd

import (
	"fmt"
	"os"
	"path/filepath"
	"text/tabwriter"
	"time"

	"github.com/spf13/cobra"
	"github.com/manalejandro/buque/internal/models"
)

var envCmd = &cobra.Command{
	Use:   "env",
	Short: "Manage environments",
	Long:  `Add, remove, list, and manage Docker Compose environments.`,
}

var envListCmd = &cobra.Command{
	Use:   "list",
	Short: "List all environments",
	Aliases: []string{"ls"},
	RunE: func(cmd *cobra.Command, args []string) error {
		cfg := configMgr.GetConfig()
		if cfg == nil {
			return fmt.Errorf("configuration not loaded")
		}

		if len(cfg.Environments) == 0 {
			fmt.Println("No environments configured.")
			fmt.Println("Add an environment with: buque env add <name> <path>")
			return nil
		}

		w := tabwriter.NewWriter(os.Stdout, 0, 0, 3, ' ', 0)
		fmt.Fprintln(w, "NAME\tPATH\tCOMPOSE FILE\tENABLED\tCREATED")
		
		for _, env := range cfg.Environments {
			enabled := "yes"
			if !env.Enabled {
				enabled = "no"
			}
			created := env.CreatedAt.Format("2006-01-02")
			if env.CreatedAt.IsZero() {
				created = "N/A"
			}
			fmt.Fprintf(w, "%s\t%s\t%s\t%s\t%s\n", 
				env.Name, env.Path, env.ComposeFile, enabled, created)
		}
		
		w.Flush()
		return nil
	},
}

var envAddCmd = &cobra.Command{
	Use:   "add <name> <path>",
	Short: "Add a new environment",
	Args:  cobra.ExactArgs(2),
	RunE: func(cmd *cobra.Command, args []string) error {
		name := args[0]
		path := args[1]

		// Convert to absolute path
		absPath, err := filepath.Abs(path)
		if err != nil {
			return fmt.Errorf("invalid path: %w", err)
		}

		// Check if path exists
		if _, err := os.Stat(absPath); os.IsNotExist(err) {
			return fmt.Errorf("path does not exist: %s", absPath)
		}

		composeFile, _ := cmd.Flags().GetString("compose-file")
		
		// Check if compose file exists
		composePath := filepath.Join(absPath, composeFile)
		if _, err := os.Stat(composePath); os.IsNotExist(err) {
			return fmt.Errorf("compose file not found: %s", composePath)
		}

		env := models.Environment{
			Name:        name,
			Path:        absPath,
			ComposeFile: composeFile,
			Enabled:     true,
			CreatedAt:   time.Now(),
			UpdatedAt:   time.Now(),
			Labels:      make(map[string]string),
		}

		if err := configMgr.AddEnvironment(env); err != nil {
			return fmt.Errorf("failed to add environment: %w", err)
		}

		fmt.Printf("Environment '%s' added successfully!\n", name)
		fmt.Printf("Path: %s\n", absPath)
		fmt.Printf("Compose file: %s\n", composeFile)
		
		return nil
	},
}

var envRemoveCmd = &cobra.Command{
	Use:     "remove <name>",
	Short:   "Remove an environment",
	Aliases: []string{"rm"},
	Args:    cobra.ExactArgs(1),
	RunE: func(cmd *cobra.Command, args []string) error {
		name := args[0]

		if err := configMgr.RemoveEnvironment(name); err != nil {
			return fmt.Errorf("failed to remove environment: %w", err)
		}

		fmt.Printf("Environment '%s' removed successfully!\n", name)
		return nil
	},
}

var envEnableCmd = &cobra.Command{
	Use:   "enable <name>",
	Short: "Enable an environment",
	Args:  cobra.ExactArgs(1),
	RunE: func(cmd *cobra.Command, args []string) error {
		name := args[0]
		cfg := configMgr.GetConfig()
		
		for i, env := range cfg.Environments {
			if env.Name == name {
				cfg.Environments[i].Enabled = true
				cfg.Environments[i].UpdatedAt = time.Now()
				if err := configMgr.Save(); err != nil {
					return fmt.Errorf("failed to save config: %w", err)
				}
				fmt.Printf("Environment '%s' enabled!\n", name)
				return nil
			}
		}
		
		return fmt.Errorf("environment '%s' not found", name)
	},
}

var envDisableCmd = &cobra.Command{
	Use:   "disable <name>",
	Short: "Disable an environment",
	Args:  cobra.ExactArgs(1),
	RunE: func(cmd *cobra.Command, args []string) error {
		name := args[0]
		cfg := configMgr.GetConfig()
		
		for i, env := range cfg.Environments {
			if env.Name == name {
				cfg.Environments[i].Enabled = false
				cfg.Environments[i].UpdatedAt = time.Now()
				if err := configMgr.Save(); err != nil {
					return fmt.Errorf("failed to save config: %w", err)
				}
				fmt.Printf("Environment '%s' disabled!\n", name)
				return nil
			}
		}
		
		return fmt.Errorf("environment '%s' not found", name)
	},
}

func init() {
	envCmd.AddCommand(envListCmd)
	envCmd.AddCommand(envAddCmd)
	envCmd.AddCommand(envRemoveCmd)
	envCmd.AddCommand(envEnableCmd)
	envCmd.AddCommand(envDisableCmd)
	
	envAddCmd.Flags().StringP("compose-file", "f", "docker-compose.yml", "Docker Compose file name")
}