package maker

import (
	"context"
	"os"
	"os/exec"
	"path/filepath"

	"gitea.loveuer.com/yizhisec/pkg3/logger"
	"github.com/samber/lo"
	"yizhisec.com/hsv2/forge/pkg/model"
)

type imageOpt struct {
	Fallbacks     []string
	IgnoreFailure bool
	ForcePull     bool
	Save          string
}

type ImageOpt func(*imageOpt)

func WithImageFallback(fallbacks ...string) ImageOpt {
	return func(o *imageOpt) {
		o.Fallbacks = lo.Filter(fallbacks, func(item string, _ int) bool { return item != "" })
	}
}

func WithImageSave(filename string) ImageOpt {
	return func(o *imageOpt) {
		o.Save = filename
	}
}

func WithImageForcePull(force bool) ImageOpt {
	return func(o *imageOpt) {
		if force {
			o.ForcePull = true
		}
	}
}

func (m *maker) Image(ctx context.Context, name string, opts ...ImageOpt) error {
	var (
		err  error
		o    = &imageOpt{}
		_cmd *exec.Cmd
	)

	for _, fn := range opts {
		fn(o)
	}

	logger.Debug("📋 maker.Image: name = %s, opt = %#v", name, o)

	if !o.ForcePull {
		_cmd = exec.CommandContext(ctx, "docker", "image", "inspect", name)
		if err = _cmd.Run(); err == nil {
			logger.Debug("💿 镜像 %s 已存在", name)
			goto SAVE
		}
	}

	_cmd = exec.CommandContext(ctx, "docker", "pull", name)
	if err = _cmd.Run(); err != nil {
		logger.Debug("❌ 获取原始镜像 %s 失败： %v", name, err)
	} else {
		logger.Debug("✅ 成功获取镜像: %s", name)
		goto SAVE
	}

	for _, fallback := range o.Fallbacks {
		logger.Debug("☑️ 开始获取镜像: %s (%s)", name, fallback)
		_cmd := exec.CommandContext(ctx, "docker", "pull", fallback)
		if err = _cmd.Run(); err != nil {
			logger.Debug("❌ 获取镜像 %s (%s) 失败: %v", name, fallback, err)
			continue
		}

		// pull success, retag image
		_cmd = exec.CommandContext(ctx, "docker", "tag", fallback, name)
		if err = _cmd.Run(); err != nil {
			logger.Debug("❌ 重命名镜像 %s => %s 失败: %s", fallback, name, err)
			continue
		}

		logger.Debug("✅ 成功获取镜像: %s (%s)", name, fallback)
		break
	}

SAVE:
	if o.Save != "" {
		logger.Debug("☑️ 保存镜像 %s 到 %s", name, o.Save)

		_ = os.MkdirAll(filepath.Dir(o.Save), 0755)

		if err = exec.CommandContext(ctx, "docker", "save", "-o", o.Save, name).Run(); err != nil {
			logger.Debug("❌ 保存镜像 %s 到 %s 失败: %v", name, o.Save, err)
		} else {
			logger.Debug("✅ 镜像 %s 保存到 %s 成功", name, o.Save)
		}
	}

	if o.IgnoreFailure {
		return nil
	}

	return err
}

func (m *maker) Images(ctx context.Context) error {

	var images = []*model.Image{
		{Name: "hub.yizhisec.com/external/alpine:3.22.2", Fallback: "", Save: "alpine.tar", Force: true},
		{Name: "hub.yizhisec.com/external/nginx:1.29.1-alpine3.22", Fallback: "", Save: "nginx.1.29.1-alpine3.22.tar"},

		{Name: "hub.yizhisec.com/hybridscope/user_management:latest", Fallback: "", Save: "app.user.tar", Force: true},
		{Name: "hub.yizhisec.com/hybridscope/gateway_controller:latest", Fallback: "", Save: "app.gateway.tar", Force: true},
		{Name: "hub.yizhisec.com/hybridscope/client_server:latest", Fallback: "", Save: "app.client.tar", Force: true},
		{Name: "hub.yizhisec.com/hybridscope/mie-server:latest", Fallback: "", Save: "app.mie.tar", Force: true},
		{Name: "hub.yizhisec.com/hybridscope/less_dns_service:latest", Fallback: "", Save: "app.less_dns.tar", Force: true},
		{Name: "hub.yizhisec.com/hybridscope/hsnet:release_2.1.0-std", Fallback: "", Save: "app.hsnet.tar", Force: true},
	}

	for _, image := range images {
		image.Save = filepath.Join(m.workdir, "dependency", "image", image.Save)
	}

	logger.Info("☑️ 开始获取镜像(s)...")

	for _, image := range images {

		opts := []ImageOpt{
			WithImageFallback(image.Fallback),
			WithImageSave(image.Save),
			WithImageForcePull(image.Force),
		}

		logger.Info("☑️ 获取镜像: %s", image.Name)

		if err := m.Image(ctx, image.Name, opts...); err != nil {
			logger.Error("❌ 获取镜像失败: %s, 可以手动获取后重试", image.Name)
			logger.Debug("❌ 获取镜像失败: %s, %v", image.Name, err)
			return err
		}

		logger.Info("✅ 获取镜像成功: %s", image.Name)
	}

	logger.Info("✅ 获取镜像(s)成功!!!")

	return nil
}