package echomeet

import (
	"context"
	"yunyan/lego/sys/log"
	"yunyan/pb"
	"yunyan/sys/microsoft/speech"
	"yunyan/sys/microsoft/translate"
	"yunyan/sys/openai"
	"fmt"
)

// newMicrosoftProviders 初始化微软系单元服务（转写=Azure Speech、翻译=Azure Translator、
// 总结=Azure OpenAI 兼容端点），返回组合后的转写/翻译/总结三个 provider。
func newMicrosoftProviders(opt ProviderOptions) (Transcriber, Translator, Summarizer) {
	if err := speech.OnInit(opt.Transcribe); err != nil {
		log.Errorf("echomeet: init microsoft speech failed: %v", err)
	}
	if err := translate.OnInit(opt.Translate); err != nil {
		log.Errorf("echomeet: init microsoft translate failed: %v", err)
	}
	sys, err := openai.NewSys(
		openai.SetBaseURL(opt.Summary.BaseURL),
		openai.SetToken(opt.Summary.Token),
		openai.SetModel(opt.Summary.Model),
		openai.SetMaxfunccall(1),
	)
	if err != nil {
		log.Errorf("echomeet: init microsoft(azure openai) summarizer failed: %v", err)
	}
	return &microsoftTranscriber{}, &microsoftTranslator{}, &microsoftSummarizer{sys: sys}
}

// Azure Speech Batch Transcription
type microsoftTranscriber struct{}

func (this *microsoftTranscriber) Name() pb.TranscribeService {
	return pb.TranscribeService_TranscribeService_Microsoft
}

// Azure Speech 支持的语种较广，原生使用 BCP-47 locale，不做白名单限制；
// 不支持时由 Azure 直接返回错误，统一在 Submit 失败路径处理。
func (this *microsoftTranscriber) SupportsLanguage(_ string) bool {
	return true
}

func (this *microsoftTranscriber) Submit(_ context.Context, req SubmitRequest) (*SubmitResult, error) {
	taskID, err := speech.CreateTask(req.AudioURL, req.Language, req.EnableSpeaker, req.CallbackURL)
	if err != nil {
		return nil, fmt.Errorf("microsoft speech create task: %w", err)
	}
	return &SubmitResult{TaskID: taskID}, nil
}

func (this *microsoftTranscriber) Query(_ context.Context, taskID, _ string) (*QueryResult, error) {
	status, contexts, err := speech.QueryTask(taskID)
	switch status {
	case speech.StatusSuccess:
		out := make([]*pb.ContextStruct, 0, len(contexts))
		for _, c := range contexts {
			out = append(out, &pb.ContextStruct{
				Content:   c.Content,
				Starttime: c.StartTime,
				Endtime:   c.EndTime,
				Speaker:   c.Speaker,
			})
		}
		return &QueryResult{Status: StatusSuccess, Contexts: out}, nil
	case speech.StatusRunning:
		return &QueryResult{Status: StatusRunning}, nil
	default:
		return &QueryResult{Status: StatusFailed}, fmt.Errorf("microsoft speech query failed: %w", err)
	}
}

// Azure Translator
type microsoftTranslator struct{}

func (this *microsoftTranslator) Name() pb.TranscribeService {
	return pb.TranscribeService_TranscribeService_Microsoft
}

func (this *microsoftTranslator) Translate(ctx context.Context, from, to string, texts []string) ([]string, error) {
	return translate.Translate(ctx, toMicrosoftTranslateLang(from), toMicrosoftTranslateLang(to), texts)
}

// Azure OpenAI 总结（OpenAI 兼容端点）
type microsoftSummarizer struct {
	sys openai.ISys
}

func (this *microsoftSummarizer) Name() pb.TranscribeService {
	return pb.TranscribeService_TranscribeService_Microsoft
}

func (this *microsoftSummarizer) Chat(ctx context.Context, messages []ChatMessage) (string, error) {
	if this.sys == nil {
		return "", fmt.Errorf("microsoft summarizer not initialized")
	}
	msgs := make([]openai.ChatReq, 0, len(messages))
	for _, m := range messages {
		msgs = append(msgs, openai.ChatReq{Role: m.Role, Content: m.Content, Images: m.Images})
	}
	resp, err := this.sys.Chat(ctx, msgs)
	if err != nil {
		return "", err
	}
	if resp == nil {
		return "", fmt.Errorf("microsoft(azure openai) chat: empty response")
	}
	return resp.Content, nil
}