package models

import (
	"errors"
	"github.com/TeaOSLab/EdgeCommon/pkg/serverconfigs"
	_ "github.com/go-sql-driver/mysql"
	"github.com/iwind/TeaGo/Tea"
	"github.com/iwind/TeaGo/dbs"
	"github.com/iwind/TeaGo/types"
)

const (
	HTTPWebStateEnabled  = 1 // 已启用
	HTTPWebStateDisabled = 0 // 已禁用
)

type HTTPWebDAO dbs.DAO

func NewHTTPWebDAO() *HTTPWebDAO {
	return dbs.NewDAO(&HTTPWebDAO{
		DAOObject: dbs.DAOObject{
			DB:     Tea.Env,
			Table:  "edgeHTTPWebs",
			Model:  new(HTTPWeb),
			PkName: "id",
		},
	}).(*HTTPWebDAO)
}

var SharedHTTPWebDAO = NewHTTPWebDAO()

// 启用条目
func (this *HTTPWebDAO) EnableHTTPWeb(id int64) error {
	_, err := this.Query().
		Pk(id).
		Set("state", HTTPWebStateEnabled).
		Update()
	return err
}

// 禁用条目
func (this *HTTPWebDAO) DisableHTTPWeb(id int64) error {
	_, err := this.Query().
		Pk(id).
		Set("state", HTTPWebStateDisabled).
		Update()
	return err
}

// 查找启用中的条目
func (this *HTTPWebDAO) FindEnabledHTTPWeb(id int64) (*HTTPWeb, error) {
	result, err := this.Query().
		Pk(id).
		Attr("state", HTTPWebStateEnabled).
		Find()
	if result == nil {
		return nil, err
	}
	return result.(*HTTPWeb), err
}

// 组合配置
func (this *HTTPWebDAO) ComposeWebConfig(webId int64) (*serverconfigs.HTTPWebConfig, error) {
	web, err := SharedHTTPWebDAO.FindEnabledHTTPWeb(webId)
	if err != nil {
		return nil, err
	}
	if web == nil {
		return nil, nil
	}
	config := &serverconfigs.HTTPWebConfig{}
	config.Id = webId
	config.IsOn = web.IsOn == 1
	config.Root = web.Root

	// gzip
	if web.GzipId > 0 {
		gzipConfig, err := SharedHTTPGzipDAO.ComposeGzipConfig(int64(web.GzipId))
		if err != nil {
			return nil, err
		}
		config.Gzip = gzipConfig
	}

	// TODO charset

	// TODO 更多配置

	return config, nil
}

// 创建Web配置
func (this *HTTPWebDAO) CreateWeb(root string) (int64, error) {
	op := NewHTTPWebOperator()
	op.State = HTTPWebStateEnabled
	op.Root = root
	_, err := this.Save(op)
	if err != nil {
		return 0, err
	}
	return types.Int64(op.Id), nil
}

// 修改Web配置
func (this *HTTPWebDAO) UpdateWeb(webId int64, root string) error {
	if webId <= 0 {
		return errors.New("invalid webId")
	}
	op := NewHTTPWebOperator()
	op.Id = webId
	op.Root = root
	_, err := this.Save(op)
	if err != nil {
		return err
	}

	return this.NotifyUpdating(webId)
}

// 修改Gzip配置
func (this *HTTPWebDAO) UpdateWebGzip(webId int64, gzipId int64) error {
	if webId <= 0 {
		return errors.New("invalid webId")
	}
	op := NewHTTPWebOperator()
	op.Id = webId
	op.GzipId = gzipId
	_, err := this.Save(op)
	if err != nil {
		return err
	}

	return this.NotifyUpdating(webId)
}

// 通知更新
func (this *HTTPWebDAO) NotifyUpdating(webId int64) error {
	err := SharedServerDAO.UpdateServerIsUpdatingWithWebId(webId)
	if err != nil {
		return err
	}

	// TODO 更新所有使用此Web配置的Location所在服务

	return nil
}