github.com/fzfile/BaiduPCS-Go@v0.0.0-20200606205115-4408961cf336/internal/pcsconfig/maniper.go

package pcsconfig

import (
	"github.com/fzfile/BaiduPCS-Go/pcsutil/converter"
	"github.com/fzfile/BaiduPCS-Go/requester"
	"strings"
)

const (
	opDelete = "delete"
	opSwitch = "switch"
	opGet    = "get"
)

func (c *PCSConfig) manipUser(op string, baiduBase *BaiduBase) (*Baidu, error) {
	// empty baiduBase
	if baiduBase == nil || (baiduBase.UID == 0 && baiduBase.Name == "") {
		switch op {
		case opGet:
			return &Baidu{}, nil
		default:
			return nil, ErrBaiduUserNotFound
		}
	}
	if len(c.BaiduUserList) == 0 {
		return nil, ErrNoSuchBaiduUser
	}

	for k, user := range c.BaiduUserList {
		if user == nil {
			continue
		}

		switch {
		case baiduBase.UID != 0 && baiduBase.Name != "":
			// 不区分大小写
			if user.UID == baiduBase.UID && strings.EqualFold(user.Name, baiduBase.Name) {
				goto handle
			}
			continue
		case baiduBase.UID == 0 && baiduBase.Name != "":
			// 不区分大小写
			if strings.EqualFold(user.Name, baiduBase.Name) {
				goto handle
			}
			continue
		case baiduBase.UID != 0 && baiduBase.Name == "":
			if user.UID == baiduBase.UID {
				goto handle
			}
			continue
		default:
			continue
		}
		// unreachable zone

	handle:
		switch op {
		case opSwitch:
			c.setupNewUser(user)
		case opDelete:
			c.BaiduUserList = append(c.BaiduUserList[:k], c.BaiduUserList[k+1:]...)

			// 修改 正在使用的 百度帐号
			// 如果要删除的帐号为当前登录的帐号, 则设置当前登录帐号为列表中第一个帐号
			if c.BaiduActiveUID == user.UID {
				if len(c.BaiduUserList) != 0 {
					c.setupNewUser(c.BaiduUserList[0])
				} else {
					c.BaiduActiveUID = 0
				}
			}
		case opGet:
			// do nothing
		default:
			// do nothing
		}
		return user, nil
	}

	return nil, ErrBaiduUserNotFound
}

//setupNewUser 从已有用户中, 设置新的当前登录用户
func (c *PCSConfig) setupNewUser(user *Baidu) {
	if user == nil {
		return
	}
	c.BaiduActiveUID = user.UID
	c.activeUser = user
	c.pcs = user.BaiduPCS()
}

// SwitchUser 切换用户, 返回切换成功的用户
func (c *PCSConfig) SwitchUser(baiduBase *BaiduBase) (*Baidu, error) {
	return c.manipUser(opSwitch, baiduBase)
}

// DeleteUser 删除用户, 返回删除成功的用户
func (c *PCSConfig) DeleteUser(baiduBase *BaiduBase) (*Baidu, error) {
	return c.manipUser(opDelete, baiduBase)
}

// GetBaiduUser 获取百度用户信息
func (c *PCSConfig) GetBaiduUser(baidubase *BaiduBase) (*Baidu, error) {
	return c.manipUser(opGet, baidubase)
}

// CheckBaiduUserExist 检查百度用户是否存在于已登录列表
func (c *PCSConfig) CheckBaiduUserExist(baidubase *BaiduBase) bool {
	_, err := c.manipUser("", baidubase)
	return err == nil
}

// SetupUserByBDUSS 设置百度 bduss, ptoken, stoken 并保存
func (c *PCSConfig) SetupUserByBDUSS(bduss, ptoken, stoken string) (baidu *Baidu, err error) {
	b, err := NewUserInfoByBDUSS(bduss)
	if err != nil {
		return nil, err
	}

	c.DeleteUser(&BaiduBase{
		UID: b.UID,
	}) // 删除旧的信息

	b.PTOKEN = ptoken
	b.STOKEN = stoken

	c.BaiduUserList = append(c.BaiduUserList, b)

	// 自动切换用户
	c.setupNewUser(b)
	return b, nil
}

// SetAppID 设置app_id
func (c *PCSConfig) SetAppID(appID int) {
	c.AppID = appID
	if c.pcs != nil {
		c.pcs.SetAPPID(appID)
	}
}

// SetCacheSizeByStr 设置cache_size
func (c *PCSConfig) SetCacheSizeByStr(sizeStr string) error {
	size, err := converter.ParseFileSizeStr(sizeStr)
	if err != nil {
		return err
	}
	c.CacheSize = int(size)
	return nil
}

// SetMaxDownloadRateByStr 设置 max_download_rate
func (c *PCSConfig) SetMaxDownloadRateByStr(sizeStr string) error {
	size, err := converter.ParseFileSizeStr(stripPerSecond(sizeStr))
	if err != nil {
		return err
	}
	c.MaxDownloadRate = size
	return nil
}

// SetMaxUploadRateByStr 设置 max_upload_rate
func (c *PCSConfig) SetMaxUploadRateByStr(sizeStr string) error {
	size, err := converter.ParseFileSizeStr(stripPerSecond(sizeStr))
	if err != nil {
		return err
	}
	c.MaxUploadRate = size
	return nil
}

// SetUserAgent 设置User-Agent
func (c *PCSConfig) SetUserAgent(userAgent string) {
	c.UserAgent = userAgent
	requester.UserAgent = userAgent
}

// SetPCSUA 设置 PCS User-Agent
func (c *PCSConfig) SetPCSUA(pcsUA string) {
	c.PCSUA = pcsUA
	if c.pcs != nil {
		c.pcs.SetPCSUserAgent(pcsUA)
	}
}

// SetPanUA 设置 Pan User-Agent
func (c *PCSConfig) SetPanUA(panUA string) {
	c.PanUA = panUA
	if c.pcs != nil {
		c.pcs.SetPanUserAgent(panUA)
	}
}

// SetEnableHTTPS 设置是否启用https
func (c *PCSConfig) SetEnableHTTPS(https bool) {
	c.EnableHTTPS = https
	if c.pcs != nil {
		c.pcs.SetHTTPS(https)
	}
}

// SetProxy 设置代理
func (c *PCSConfig) SetProxy(proxy string) {
	c.Proxy = proxy
	requester.SetGlobalProxy(proxy)
}

// SetLocalAddrs 设置localAddrs
func (c *PCSConfig) SetLocalAddrs(localAddrs string) {
	c.LocalAddrs = localAddrs
	requester.SetLocalTCPAddrList(strings.Split(localAddrs, ",")...)
}