package openai

import (
	"errors"
	"fmt"
	"github.com/gin-gonic/gin"
	"io"
	"net/http"
	"one-api/common"
	"one-api/dto"
	"one-api/relay/channel"
	"one-api/relay/channel/ai360"
	"one-api/relay/channel/lingyiwanwu"
	"one-api/relay/channel/minimax"
	"one-api/relay/channel/moonshot"
	relaycommon "one-api/relay/common"
	"one-api/service"
	"strings"
)

type Adaptor struct {
	ChannelType int
}

func (a *Adaptor) ConvertRerankRequest(c *gin.Context, relayMode int, request dto.RerankRequest) (any, error) {
	return nil, nil
}

func (a *Adaptor) InitRerank(info *relaycommon.RelayInfo, request dto.RerankRequest) {
}

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

func (a *Adaptor) GetRequestURL(info *relaycommon.RelayInfo) (string, error) {
	switch info.ChannelType {
	case common.ChannelTypeAzure:
		// https://learn.microsoft.com/en-us/azure/cognitive-services/openai/chatgpt-quickstart?pivots=rest-api&tabs=command-line#rest-api
		requestURL := strings.Split(info.RequestURLPath, "?")[0]
		requestURL = fmt.Sprintf("%s?api-version=%s", requestURL, info.ApiVersion)
		task := strings.TrimPrefix(requestURL, "/v1/")
		model_ := info.UpstreamModelName
		model_ = strings.Replace(model_, ".", "", -1)
		// https://github.com/songquanpeng/one-api/issues/67

		requestURL = fmt.Sprintf("/openai/deployments/%s/%s", model_, task)
		return relaycommon.GetFullRequestURL(info.BaseUrl, requestURL, info.ChannelType), nil
	case common.ChannelTypeMiniMax:
		return minimax.GetRequestURL(info)
	case common.ChannelTypeCustom:
		url := info.BaseUrl
		url = strings.Replace(url, "{model}", info.UpstreamModelName, -1)
		return url, 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)
	if info.ChannelType == common.ChannelTypeAzure {
		req.Header.Set("api-key", info.ApiKey)
		return nil
	}
	if info.ChannelType == common.ChannelTypeOpenAI && "" != info.Organization {
		req.Header.Set("OpenAI-Organization", info.Organization)
	}
	req.Header.Set("Authorization", "Bearer "+info.ApiKey)
	//if info.ChannelType == common.ChannelTypeOpenRouter {
	//	req.Header.Set("HTTP-Referer", "https://github.com/songquanpeng/one-api")
	//	req.Header.Set("X-Title", "One API")
	//}
	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")
	}
	return 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
		var toolCount int
		err, responseText, toolCount = OpenaiStreamHandler(c, resp, info)
		usage, _ = service.ResponseText2Usage(responseText, info.UpstreamModelName, info.PromptTokens)
		usage.CompletionTokens += toolCount * 7
	} else {
		err, usage = OpenaiHandler(c, resp, info.PromptTokens, info.UpstreamModelName)
	}
	return
}

func (a *Adaptor) GetModelList() []string {
	switch a.ChannelType {
	case common.ChannelType360:
		return ai360.ModelList
	case common.ChannelTypeMoonshot:
		return moonshot.ModelList
	case common.ChannelTypeLingYiWanWu:
		return lingyiwanwu.ModelList
	case common.ChannelTypeMiniMax:
		return minimax.ModelList
	default:
		return ModelList
	}
}

func (a *Adaptor) GetChannelName() string {
	switch a.ChannelType {
	case common.ChannelType360:
		return ai360.ChannelName
	case common.ChannelTypeMoonshot:
		return moonshot.ChannelName
	case common.ChannelTypeLingYiWanWu:
		return lingyiwanwu.ChannelName
	case common.ChannelTypeMiniMax:
		return minimax.ChannelName
	default:
		return ChannelName
	}
}