package ollama

import (
	"errors"
	"github.com/gin-gonic/gin"
	"io"
	"net/http"
	"one-api/dto"
	"one-api/relay/channel"
	"one-api/relay/channel/openai"
	relaycommon "one-api/relay/common"
	relayconstant "one-api/relay/constant"
	"one-api/service"
)

type Adaptor struct {
}

func (a *Adaptor) Init(info *relaycommon.RelayInfo, request dto.GeneralOpenAIRequest) {
}

func (a *Adaptor) GetRequestURL(info *relaycommon.RelayInfo) (string, error) {
	switch info.RelayMode {
	case relayconstant.RelayModeEmbeddings:
		return info.BaseUrl + "/api/embeddings", nil
	default:
		return relaycommon.GetFullRequestURL(info.BaseUrl, info.RequestURLPath, info.ChannelType), nil
	}
}

func (a *Adaptor) SetupRequestHeader(c *gin.Context, req *http.Request, info *relaycommon.RelayInfo) error {
	channel.SetupApiRequestHeader(info, c, req)
	return nil
}

func (a *Adaptor) ConvertRequest(c *gin.Context, relayMode int, request *dto.GeneralOpenAIRequest) (any, error) {
	if request == nil {
		return nil, errors.New("request is nil")
	}
	switch relayMode {
	case relayconstant.RelayModeEmbeddings:
		return requestOpenAI2Embeddings(*request), nil
	default:
		return requestOpenAI2Ollama(*request), nil
	}
}

func (a *Adaptor) DoRequest(c *gin.Context, info *relaycommon.RelayInfo, requestBody io.Reader) (*http.Response, error) {
	return channel.DoApiRequest(a, c, info, requestBody)
}

func (a *Adaptor) DoResponse(c *gin.Context, resp *http.Response, info *relaycommon.RelayInfo) (usage *dto.Usage, err *dto.OpenAIErrorWithStatusCode) {
	if info.IsStream {
		var responseText string
		err, responseText = openai.OpenaiStreamHandler(c, resp, info.RelayMode)
		usage, _ = service.ResponseText2Usage(responseText, info.UpstreamModelName, info.PromptTokens)
	} else {
		if info.RelayMode == relayconstant.RelayModeEmbeddings {
			err, usage = ollamaEmbeddingHandler(c, resp, info.PromptTokens, info.UpstreamModelName, info.RelayMode)
		} else {
			err, usage = openai.OpenaiHandler(c, resp, info.PromptTokens, info.UpstreamModelName)
		}
	}
	return
}

func (a *Adaptor) GetModelList() []string {
	return ModelList
}

func (a *Adaptor) GetChannelName() string {
	return ChannelName
}