package runner

import (
	"errors"
	"fmt"
	"git.0x7f.app/WOJ/woj-server/internal/e"
	"git.0x7f.app/WOJ/woj-server/pkg/file"
	"git.0x7f.app/WOJ/woj-server/pkg/utils"
	"go.uber.org/zap"
	"os"
	"path/filepath"
)

type depConfig struct {
	tarball    string
	image      string
	dockerfile string
}

func (s *service) loadImage(cfg *depConfig) e.Status {
	err := utils.NewTryErr().
		Try(func() error {
			// import from tarball
			if !file.FileExist(cfg.tarball) {
				return errors.New("tarball not exists")
			}
			return s.execute("bash", "-c", fmt.Sprintf("gzip -d -c %s | podman load", cfg.tarball))
		}).
		Or(func() error {
			// pull from docker hub
			return s.execute("podman", "pull", cfg.image)
		}).
		Or(func() error {
			// build from dockerfile
			if !file.FileExist(cfg.dockerfile) {
				return errors.New("dockerfile not exists")
			}
			return s.execute("podman", "build", "-f", cfg.dockerfile, "-t", cfg.image, ".")
		}).
		Done()

	if err != nil {
		s.log.Warn("load image failed", zap.Error(err))
		return e.RunnerDepsBuildFailed
	}

	return e.Success
}

func (s *service) EnsureDeps(force bool) e.Status {
	mark := filepath.Join(Prefix, ".mark.image")

	// check mark
	if force {
		_ = os.Remove(mark)
	} else if file.FileExist(mark) {
		return e.Success
	}

	// full
	fullImage := &depConfig{
		tarball:    filepath.Join(TmpDir, "ubuntu-full.tar.gz"),
		image:      "git.0x7f.app/woj/ubuntu-full:latest",
		dockerfile: filepath.Join(ScriptsDir, "ubuntu-full.Dockerfile"),
	}
	if s.loadImage(fullImage) != e.Success {
		return e.RunnerDepsBuildFailed
	}

	// tiny
	tinyImage := &depConfig{
		tarball:    filepath.Join(TmpDir, "ubuntu-tiny.tar.gz"),
		image:      "git.0x7f.app/woj/ubuntu-run:latest",
		dockerfile: filepath.Join(ScriptsDir, "ubuntu-run.Dockerfile"),
	}
	if s.loadImage(tinyImage) != e.Success {
		return e.RunnerDepsBuildFailed
	}

	// mark
	_, _ = os.Create(mark)

	return e.Success
}