package service

import (
	"context"
	"errors"
	"model-gateway/dao"
	"model-gateway/model/dto"
	"model-gateway/model/entity"

	"gitea.com/red-future/common/beans"
	"gitea.com/red-future/common/db/gfdb"
	"gitea.com/red-future/common/http"
	"gitea.com/red-future/common/utils"
	"github.com/gogf/gf/v2/database/gdb"
	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/util/gconv"
)

var Model = &modelService{}

type modelService struct{}

// IsSuperAdmin 调用admin-go服务检查是否是超级管理员
func (s *modelService) IsSuperAdmin(ctx context.Context) (res bool, err error) {
	headers := forwardHeaders(ctx)
	var r = make(map[string]bool)
	if err = http.Get(ctx, "admin-go/api/v1/system/user/checkIsSuperAdmin", headers, &r); err != nil {
		return false, err
	}
	return r["isSuperAdmin"], err
}

func (s *modelService) Create(ctx context.Context, req *dto.CreateModelReq) (res *dto.CreateModelRes, err error) {
	// 获取当前会话模型
	if !g.IsEmpty(req.IsChatModel) && *req.IsChatModel == 1 {
		var model *entity.AsynchModel
		model, err = dao.Model.GetByIsChatModel(ctx)
		if err != nil {
			return nil, err
		}
		// 如果有会话模型，那就改变为 0
		if model != nil {
			_, err = dao.Model.Update(ctx, &dto.UpdateModelReq{
				ID:          model.Id,
				IsChatModel: gconv.PtrInt(0),
			})
			if err != nil {
				return nil, err
			}
		}
	}

	req.IsOwner = gconv.PtrInt(1)
	admin, err := s.IsSuperAdmin(ctx)
	if err != nil {
		return
	}
	if admin {
		req.IsOwner = gconv.PtrInt(0)
	}
	id, err := dao.Model.Insert(ctx, req)
	if err != nil {
		return nil, err
	}
	return &dto.CreateModelRes{ID: id}, nil
}

func (s *modelService) Update(ctx context.Context, req *dto.UpdateModelReq) error {
	//根据当前 isChatModel 来判断是否更新模型
	if req.IsChatModel == gconv.PtrInt(1) {
		//判断当前用户是否有会话模型
		model, err := dao.Model.GetByIsChatModel(ctx)
		if err != nil {
			return err
		}
		if model != nil {
			return errors.New("用户已存在会话模型，不能创建")
		}
	}

	req.IsOwner = gconv.PtrInt(1)
	admin, err := s.IsSuperAdmin(ctx)
	if err != nil {
		return err
	}
	if admin {
		req.IsOwner = gconv.PtrInt(0)
		_, err = dao.Model.Update(ctx, req)
		if err != nil {
			return err
		}
		return nil
	}

	var user *beans.User
	user, err = utils.GetUserInfo(ctx)
	if err != nil {
		return err
	}
	// 判断当前传过来的模型id的模型是否是超级管理员的。如果是超管的进行创建，否则更新
	var count int
	count, err = dao.Model.Count(ctx, &dto.GetModelReq{
		ID:      req.ID,
		Creator: user.UserName,
	})
	if err != nil {
		return err
	}
	if count == 0 {
		insertDto := new(dto.CreateModelReq)
		err = gconv.Struct(req, insertDto)
		if err != nil {
			return err
		}
		_, err = dao.Model.Insert(ctx, insertDto)
		return err
	}
	_, err = dao.Model.Update(ctx, req)
	return err
}

func (s *modelService) Delete(ctx context.Context, id string) error {
	_, err := dao.Model.DeleteByID(ctx, id)
	return err
}

func (s *modelService) Get(ctx context.Context, id int64) (*entity.AsynchModel, error) {
	model, err := dao.Model.Get(ctx, id)
	if err != nil {
		return nil, err
	}
	model.Form = ParseJSONField(model.Form)
	model.RequestMapping = ParseJSONField(model.RequestMapping)
	model.ResponseMapping = ParseJSONField(model.ResponseMapping)
	model.ResponseBody = ParseJSONField(model.ResponseBody)
	return model, nil
}

func (s *modelService) List(ctx context.Context, req *dto.ListModelReq) (list []*entity.AsynchModel, total int, err error) {
	var models []*entity.AsynchModel

	req.IsOwner = gconv.PtrInt(1)
	admin, err := s.IsSuperAdmin(ctx)
	if err != nil {
		return
	}
	if admin {
		req.IsOwner = gconv.PtrInt(0)
	}

	var user *beans.User
	user, err = utils.GetUserInfo(ctx)
	if err != nil {
		return nil, 0, err
	}
	req.Creator = user.UserName

	models, total, err = dao.Model.GetByCreatorAndPlatform(ctx, req)
	if err != nil {
		return
	}

	// 处理列表中每条记录的 JSONB 字段
	for _, m := range models {
		m.Form = ParseJSONField(m.Form)
		m.RequestMapping = ParseJSONField(m.RequestMapping)
		m.ResponseMapping = ParseJSONField(m.ResponseMapping)
		m.ResponseBody = ParseJSONField(m.ResponseBody)
	}
	return models, total, nil
}

// GetModelTypesFromConfig 从配置文件读取模型类型
func GetModelTypesFromConfig(ctx context.Context) map[int]string {
	typeMap := make(map[int]string)

	// 读取配置
	configMap := g.Cfg().MustGet(ctx, "modelType.types").Map()
	for k, v := range configMap {
		typeID := gconv.Int(k)
		typeName := gconv.String(v)
		if typeID > 0 && typeName != "" {
			typeMap[typeID] = typeName
		}
	}
	// 如果配置为空，使用默认值
	if len(typeMap) == 0 {
		typeMap = map[int]string{
			1: "推理模型",
			2: "图片模型",
			3: "音频模型",
			4: "向量化模型",
			5: "全模态模型",
		}
	}
	return typeMap
}

func (s *modelService) UpdateChatModel(ctx context.Context, req *dto.UpdateChatModelReq) error {
	// 校验新会话模型是否存在
	newModel, err := dao.Model.Get(ctx, req.Id)
	if err != nil {
		return err
	}
	if newModel == nil {
		return errors.New("新会话模型不存在")
	}

	// 获取当前用户会话模型
	currentModel, err := dao.Model.GetByIsChatModel(ctx)
	if err != nil {
		return err
	}
	err = gfdb.DB(ctx).Transaction(ctx, func(ctx context.Context, tx gdb.TX) error {
		if !g.IsEmpty(currentModel) {
			if currentModel.ModelType != 1 {
				return errors.New("当前模型为非推理模型,不能设置为会话模型")
			}

			// 如果点击的就是当前会话模型（已经是1），取消它（设为0）
			if currentModel.Id != req.Id {
				_, err = dao.Model.Update(ctx, &dto.UpdateModelReq{
					ID:          currentModel.Id,
					IsChatModel: gconv.PtrInt(0),
				})
				if err != nil {
					return err
				}
			}
		}

		// 设置当前为会话模型（设为1）
		_, err = dao.Model.Update(ctx, &dto.UpdateModelReq{
			ID:          req.Id,
			IsChatModel: gconv.PtrInt(1),
		})
		return err
	})
	return err
}

func (s *modelService) GetIsChatModel(ctx context.Context) (*entity.AsynchModel, error) {
	model, err := dao.Model.GetByIsChatModel(ctx)
	if err != nil {
		return nil, err
	}
	if model == nil {
		return nil, nil
	}
	model.Form = ParseJSONField(model.Form)
	model.RequestMapping = ParseJSONField(model.RequestMapping)
	model.ResponseMapping = ParseJSONField(model.ResponseMapping)
	model.ResponseBody = ParseJSONField(model.ResponseBody)
	return model, nil
}