package maker

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

	"gitea.loveuer.com/yizhisec/pkg3/logger"
	"yizhisec.com/hsv2/forge/pkg/archiver"
	"yizhisec.com/hsv2/forge/pkg/model"
	"yizhisec.com/hsv2/forge/pkg/resource"
)

func (m *maker) AppOEM(ctx context.Context, vendor string, replica int) error {
	const (
		_nginx = `user  root;
worker_processes  auto;
error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  512;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    access_log  /var/log/nginx/access.log;

    sendfile        on;

    keepalive_timeout  65;

    client_max_body_size 10M;

    server {
        listen 80;

        root /data;
        location / {
            try_files \$uri \$uri/ =404;
        }
    }
}`
		_dockerfile = `FROM hub.yizhisec.com/external/nginx:1.29.1-alpine3.22

WORKDIR /data
COPY oem /data/oem
COPY nginx.conf /etc/nginx/nginx.conf

CMD ["nginx", "-g", "daemon off;"]`
		_image = "hub.yizhisec.com/hybridscope/v2/oem-%s:latest"
	)
	var (
		err     error
		_vendor = model.GetVendor(vendor)
		workdir = filepath.Join(m.workdir, "app", "oem")
		output  []byte
	)

	logger.Info("☑️ maker.AppOEM: 开始构建 oem[%s], workdir = %s", vendor, workdir)

	if _vendor == nil {
		supported := model.GetVendorNames()
		logger.Debug("❌ maker.AppOEM: vendor not supported, 支持的 vendor 有: %v", supported)
		return fmt.Errorf("请检查 vendor 是否正确, 支持的 vendor 有: %v", supported)
	}

	// 1. make workdir
	logger.Debug("☑️ maker.AppOEM: 开始创建 workdir = %s", workdir)
	if err = os.MkdirAll(workdir, 0o755); err != nil {
		return err
	}
	logger.Debug("✅ maker.AppOEM: workdir 创建成功 = %s", workdir)

	// 2. download oem.tar.gz
	logger.Debug("☑️ maker.AppOEM: 开始下载 oem[%s] url = %s", vendor, _vendor)
	if err = archiver.DownloadAndExtract(ctx, _vendor.OEMUrl, workdir); err != nil {
		logger.Debug("❌ maker.AppOEM: oem[%s] tar 下载失败, url = %s, err = %v", vendor, _vendor.OEMUrl, err)
		return err
	}
	if _vendor.OEMDir != "oem" {
		if err = os.Rename(
			filepath.Join(workdir, _vendor.OEMDir),
			filepath.Join(workdir, "oem"),
		); err != nil {
			logger.Debug("❌ maker.AppOEM: oem[%s] tar 重命名失败, err = %v", vendor, err)
			return err
		}
	}
	logger.Debug("✅ maker.AppOEM: oem[%s] tar 下载成功", vendor)

	// 3. write nginx.conf
	logger.Debug("☑️ maker.AppOEM: 开始写入 nginx.conf")
	if err = os.WriteFile(
		filepath.Join(workdir, "nginx.conf"),
		[]byte(_nginx),
		0o644,
	); err != nil {
		logger.Debug("❌ maker.AppOEM: nginx.conf 写入失败, err = %v", err)
		return err
	}
	logger.Debug("✅ maker.AppOEM: nginx.conf 写入成功")

	// 4. write Dockerfile
	logger.Debug("☑️ maker.AppOEM: 开始写入 Dockerfile")
	if err = os.WriteFile(
		filepath.Join(workdir, "Dockerfile"),
		[]byte(_dockerfile),
		0o644,
	); err != nil {
		logger.Debug("❌ maker.AppOEM: Dockerfile 写入失败, err = %v", err)
		return err
	}
	logger.Debug("✅ maker.AppOEM: Dockerfile 写入成功")

	// 5. build docker image
	imageName := fmt.Sprintf(_image, vendor)
	logger.Debug("☑️ maker.AppOEM: 开始构建 docker image = %s", imageName)
	// docker build -t <image_name> -f <workdir/Dockerfile> <workdir>
	_cmd := exec.CommandContext(ctx, "docker", "build", "-t", imageName, "-f", filepath.Join(workdir, "Dockerfile"), workdir)
	if output, err = _cmd.CombinedOutput(); err != nil {
		logger.Debug("❌ maker.AppOEM: docker image 构建失败, err = %v, output = %s", err, string(output))
		return err
	}
	logger.Debug("✅ maker.AppOEM: docker image 构建成功, image = %s", imageName)

	// 6. save docker image to image dir
	logger.Debug("☑️ maker.AppOEM: 开始保存 docker image = %s 到 %s", imageName, filepath.Join(m.workdir, "image", imageName))
	if err = os.MkdirAll(filepath.Join(m.workdir, "dependency", "image"), 0o755); err != nil {
		logger.Debug("❌ maker.AppOEM: image 目录创建失败, err = %v", err)
		return err
	}
	if err = exec.CommandContext(ctx, "docker", "save", "-o", filepath.Join(m.workdir, "dependency", "image", "app.oem.tar"), imageName).Run(); err != nil {
		logger.Debug("❌ maker.AppOEM: docker image 保存失败, err = %v", err)
		return err
	}
	logger.Debug("✅ maker.AppOEM: docker image 保存成功, image = %s", imageName)

	// 7. render oem.yaml
	logger.Debug("☑️ maker.AppOEM: 开始渲染 deployment.yaml")
	oemYAML := fmt.Sprintf(resource.YAMLAppOEM, replica, imageName)
	if err = os.WriteFile(
		filepath.Join(workdir, "deployment.yaml"),
		[]byte(oemYAML),
		0o644,
	); err != nil {
		logger.Debug("❌ maker.AppOEM: deployment.yaml 写入失败, err = %v", err)
		return err
	}
	logger.Debug("✅ maker.AppOEM: deployment.yaml 写入成功")

	logger.Info("✅ maker.AppOEM: 开始构建 oem[%s] 成功!!!", vendor)

	return nil
}