package getter

import (
	"github.com/hashicorp/go-hclog"
	"github.com/hashicorp/nomad/client/config"
	"github.com/hashicorp/nomad/client/interfaces"
	"github.com/hashicorp/nomad/nomad/structs"
)

// New creates a Sandbox with the given ArtifactConfig.
func New(ac *config.ArtifactConfig, logger hclog.Logger) *Sandbox {
	return &Sandbox{
		logger: logger.Named("artifact"),
		ac:     ac,
	}
}

// A Sandbox is used to download artifacts.
type Sandbox struct {
	logger hclog.Logger
	ac     *config.ArtifactConfig
}

func (s *Sandbox) Get(env interfaces.EnvReplacer, artifact *structs.TaskArtifact) error {
	s.logger.Debug("get", "source", artifact.GetterSource, "destination", artifact.RelativeDest)

	source, err := getURL(env, artifact)
	if err != nil {
		return err
	}

	destination, err := getDestination(env, artifact)
	if err != nil {
		return err
	}

	mode := getMode(artifact)
	headers := getHeaders(env, artifact)
	dir := getTaskDir(env)

	params := &parameters{
		// downloader configuration
		HTTPReadTimeout:            s.ac.HTTPReadTimeout,
		HTTPMaxBytes:               s.ac.HTTPMaxBytes,
		GCSTimeout:                 s.ac.GCSTimeout,
		GitTimeout:                 s.ac.GitTimeout,
		HgTimeout:                  s.ac.HgTimeout,
		S3Timeout:                  s.ac.S3Timeout,
		DisableFilesystemIsolation: s.ac.DisableFilesystemIsolation,

		// artifact configuration
		Mode:        mode,
		Source:      source,
		Destination: destination,
		Headers:     headers,

		// task environment
		TaskDir: dir,
	}

	if err = s.runCmd(params); err != nil {
		return err
	}
	return nil
}