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80 lines
3.3 KiB
80 lines
3.3 KiB
package user
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import (
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"context"
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"strings"
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"time"
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"yunyan/comm"
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"yunyan/lego/sys/log"
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"yunyan/pb"
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)
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// @Summary 实时机器翻译
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// @Description 同声传译/面对面翻译用；服务端调用后台「第三方服务配置」里启用的 MT 服务
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// @Tags User
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// @Accept json
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// @Produce json
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// @Security BearerAuth
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// @Param user body pb.UserTranslateReq true "翻译请求"
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// @Success 200 {object} comm.HttpResult{data=pb.UserTranslateResp} "成功返回"
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// @Router /api/home/user_translate [post]
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//
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// 语言码：客户端传 BCP-47（zh-CN/en-US），这里统一归一成服务商要的短码。
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// 阿里云对语言码传错不会报错，只会返回空或原文，所以归一放服务端收口。
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func (this *apiComp) Translate(session comm.IUserSession, req *pb.UserTranslateReq) (resp *pb.UserTranslateResp, errdata *pb.ErrorData) {
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text := strings.TrimSpace(req.Text)
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to := comm.BCP47ToShortLang(req.To)
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from := comm.BCP47ToShortLang(req.From)
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if text == "" || to == "" {
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errdata = &pb.ErrorData{Code: pb.ErrorCode_TranslateParamInvalid, Message: "原文或目标语言为空"}
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return
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}
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// 同语种直接回原文，别浪费一次调用（同传里源=目标的情况很常见）
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if from != "" && from == to {
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resp = &pb.UserTranslateResp{Text: req.Text}
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return
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}
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svcId, provider, tr, err := this.module.translatemodel.resolveTranslator()
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if err != nil {
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this.module.Error("Translate: 翻译服务解析失败",
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log.Field{Key: "svc", Value: svcId}, log.Field{Key: "provider", Value: provider},
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log.Field{Key: "err", Value: err.Error()})
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errdata = &pb.ErrorData{Code: pb.ErrorCode_TranslateNotConfigured, Message: "翻译服务不可用"}
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return
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}
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if tr == nil {
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// 没配，或者配的是还没接的服务商
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this.module.Warn("Translate: 无可用翻译服务",
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log.Field{Key: "svc", Value: svcId}, log.Field{Key: "provider", Value: provider})
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errdata = &pb.ErrorData{Code: pb.ErrorCode_TranslateNotConfigured, Message: "未配置机器翻译服务"}
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return
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}
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// from 为空即自动检测：交给服务商识别，省掉一次单独的语种识别调用，
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// 检测出的短码随响应回带，客户端据此把「自动检测」显示成具体语种。
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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translated, detected, err := tr.TranslateDetect(ctx, from, to, text)
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if err != nil {
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this.module.Error("Translate: 服务商调用失败",
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log.Field{Key: "uid", Value: session.GetUserId()}, log.Field{Key: "svc", Value: svcId},
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log.Field{Key: "from", Value: from}, log.Field{Key: "to", Value: to},
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log.Field{Key: "err", Value: err.Error()})
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errdata = &pb.ErrorData{Code: pb.ErrorCode_TranslateProviderError, Message: "翻译失败，请稍后再试"}
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return
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}
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if strings.TrimSpace(translated) == "" {
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// 返回空通常意味着语言码不被支持——报错比悄悄返回空串强，
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// 否则客户端会显示一片空白，谁也不知道发生了什么。
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this.module.Warn("Translate: 服务商返回空结果",
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log.Field{Key: "svc", Value: svcId}, log.Field{Key: "from", Value: from}, log.Field{Key: "to", Value: to})
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errdata = &pb.ErrorData{Code: pb.ErrorCode_TranslateProviderError, Message: "翻译结果为空"}
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return
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}
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resp = &pb.UserTranslateResp{Text: translated, Provider: provider, Svcid: svcId, DetectedFrom: detected}
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return
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}
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