package cmd

import (
	"fmt"

	"github.com/jensbecker/homelab/knecht/portainer"
	"github.com/jensbecker/homelab/knecht/stack"
	"github.com/spf13/cobra"
)

var deployCmd = &cobra.Command{
	Use:   "deploy <stack>",
	Short: "Deploy a new stack from services/<stack>/docker-compose.yml",
	Args:  cobra.ExactArgs(1),
	RunE: func(cmd *cobra.Command, args []string) error {
		_, client, svcPath, err := setup()
		if err != nil {
			return err
		}

		name := args[0]
		local, err := stack.Get(svcPath, name)
		if err != nil {
			return err
		}

		// Check if already deployed
		existing, err := client.GetStackByName(name)
		if err != nil {
			return err
		}
		if existing != nil {
			return fmt.Errorf("stack %q already exists (id %d) — use `knecht update %s` instead", name, existing.ID, name)
		}

		compose, err := local.ReadCompose()
		if err != nil {
			return err
		}

		// Collect env vars from .env.example keys — values left empty for user to set in Portainer
		exampleKeys, err := local.EnvExampleKeys()
		if err != nil {
			return err
		}
		env := make([]portainer.EnvVar, len(exampleKeys))
		for i, k := range exampleKeys {
			env[i] = portainer.EnvVar{Name: k, Value: ""}
		}

		s, err := client.CreateStack(name, compose, env)
		if err != nil {
			return err
		}
		fmt.Printf("Deployed stack %q (id %d)\n", s.Name, s.ID)
		if len(exampleKeys) > 0 {
			fmt.Println("Set the following env vars in Portainer:")
			for _, k := range exampleKeys {
				fmt.Printf("  • %s\n", k)
			}
		}
		return nil
	},
}

func init() {
	rootCmd.AddCommand(deployCmd)
}