package main

import (
	"fmt"

	"github.com/spf13/cobra"
)

func buildCommand() *cobra.Command {
	var imageFlag string

	cmd := &cobra.Command{
		Use:   "build <service>",
		Short: "Build container images for a service",
		Args:  cobra.ExactArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			cfg, err := loadCfg()
			if err != nil {
				return err
			}

			svc, err := cfg.FindService(args[0])
			if err != nil {
				return err
			}

			svcPath := cfg.ServicePath(svc)

			version, err := runOutput(svcPath, "git", "describe", "--tags", "--always", "--dirty")
			if err != nil {
				return fmt.Errorf("git describe in %s: %w", svcPath, err)
			}
			fmt.Printf("Version: %s\n", version)

			images := svc.Images
			if imageFlag != "" {
				images = []string{imageFlag}
			}

			var built []string
			for _, image := range images {
				dockerfile, ok := svc.Dockerfiles[image]
				if !ok {
					dockerfile = "Dockerfile"
				}

				ref := cfg.ImageRef(image)
				tagLatest := ref + ":latest"
				tagVersion := ref + ":" + version

				err := runIn(svcPath, "podman", "build",
					"-f", dockerfile,
					"-t", tagLatest,
					"-t", tagVersion,
					".",
				)
				if err != nil {
					return fmt.Errorf("build %s: %w", image, err)
				}
				built = append(built, tagLatest, tagVersion)
			}

			fmt.Printf("\nBuilt %d image(s):\n", len(images))
			for _, tag := range built {
				fmt.Printf("  %s\n", tag)
			}
			return nil
		},
	}

	cmd.Flags().StringVar(&imageFlag, "image", "", "build only this image")
	return cmd
}