72 lines
2.0 KiB
Go
72 lines
2.0 KiB
Go
package common
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import (
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"context"
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"fmt"
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"github.com/perfect-panel/server/internal/svc"
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"github.com/perfect-panel/server/internal/types"
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"github.com/perfect-panel/server/pkg/logger"
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)
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type GetDownloadLinkLogic struct {
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logger.Logger
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ctx context.Context
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svcCtx *svc.ServiceContext
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}
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// NewGetDownloadLinkLogic 获取下载链接
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func NewGetDownloadLinkLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetDownloadLinkLogic {
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return &GetDownloadLinkLogic{
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Logger: logger.WithContext(ctx),
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ctx: ctx,
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svcCtx: svcCtx,
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}
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}
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// GetDownloadLink 根据邀请码和平台动态生成下载链接
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// 生成的链接格式: https://{host}/v1/common/client/download/file/{platform}-{version}-ic_{invite_code}.{ext}
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// Nginx 会拦截此请求，将其映射到实际文件，并在 Content-Disposition 中设置带邀请码的文件名
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func (l *GetDownloadLinkLogic) GetDownloadLink(req *types.GetDownloadLinkRequest) (resp *types.GetDownloadLinkResponse, err error) {
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// 1. 获取站点域名 (数据库配置通常会覆盖文件配置)
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host := l.svcCtx.Config.Site.Host
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if host == "" {
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// 保底域名
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host = "api.airoport.co"
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}
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// 2. 版本号 (后续可以从数据库或配置中读取)
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version := "1.0.0"
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// 3. 根据平台确定文件扩展名
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var ext string
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switch req.Platform {
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case "windows":
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ext = ".exe"
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case "mac":
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ext = ".dmg"
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case "android":
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ext = ".apk"
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case "ios":
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ext = ".ipa"
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default:
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ext = ".bin"
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}
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// 4. 构建文件名: Hi快VPN-平台-版本号[-ic_邀请码].扩展名
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const AppNamePrefix = "Hi快VPN"
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var filename string
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if req.InviteCode != "" {
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filename = fmt.Sprintf("%s-%s-%s-ic-%s%s", AppNamePrefix, req.Platform, version, req.InviteCode, ext)
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} else {
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filename = fmt.Sprintf("%s-%s-%s%s", AppNamePrefix, req.Platform, version, ext)
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}
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// 5. 构建完整 URL (Nginx 会拦截此路径进行虚拟更名处理)
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url := fmt.Sprintf("https://%s/v1/common/client/download/file/%s", host, filename)
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return &types.GetDownloadLinkResponse{
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Url: url,
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}, nil
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}
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