package service

import (
	"context"
	"errors"
	"model-gateway/common/util"
	"model-gateway/consts/public"
	"model-gateway/dao"
	"model-gateway/model/dto"
	"model-gateway/model/entity"
	"model-gateway/service/gateway"

	"gitea.com/red-future/common/beans"
	"gitea.com/red-future/common/db/gfdb"
	"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{}

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.Get(ctx, &entity.AsynchModel{
			IsChatModel: new(1),
		})
		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, &entity.AsynchModel{
				SQLBaseDO:   beans.SQLBaseDO{Id: model.Id},
				IsChatModel: gconv.PtrInt(0),
			})
			if err != nil {
				return nil, err
			}
		}
	}

	req.IsOwner = gconv.PtrInt(1)
	admin, err := gateway.IsSuperAdmin(ctx)
	if err != nil {
		return
	}
	if admin {
		req.IsOwner = gconv.PtrInt(0)
	}
	id, err := dao.Model.Insert(ctx, &entity.AsynchModel{
		ModelName:            req.ModelName,
		ModelType:            req.ModelType,
		BaseURL:              req.BaseURL,
		HttpMethod:           req.HttpMethod,
		HeadMsg:              req.HeadMsg,
		Form:                 req.Form,
		RequestMapping:       req.RequestMapping,
		ResponseMapping:      req.ResponseMapping,
		ResponseBody:         req.ResponseBody,
		ResponseTokenField:   req.ResponseTokenField,
		IsPrivate:            req.IsPrivate,
		IsChatModel:          req.IsChatModel,
		ApiKey:               req.ApiKey,
		Enabled:              req.Enabled,
		MaxConcurrency:       req.MaxConcurrency,
		QueueLimit:           req.QueueLimit,
		TimeoutSeconds:       req.TimeoutSeconds,
		ExpectedSeconds:      req.ExpectedSeconds,
		RetryTimes:           req.RetryTimes,
		RetryQueueMaxSeconds: req.RetryQueueMaxSeconds,
		AutoCleanSeconds:     req.AutoCleanSeconds,
		Remark:               req.Remark,
		IsOwner:              req.IsOwner,
		OperatorName:         req.OperatorName,
		TokenConfig:          req.TokenConfig,
	})
	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.Get(ctx, &entity.AsynchModel{
			IsChatModel: new(1),
		})
		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 := gateway.IsSuperAdmin(ctx)
	if err != nil {
		return err
	}
	if admin {
		req.IsOwner = gconv.PtrInt(0)
		_, err = dao.Model.Update(ctx, &entity.AsynchModel{
			SQLBaseDO:            beans.SQLBaseDO{Id: req.ID},
			ModelName:            req.ModelName,
			ModelType:            req.ModelType,
			BaseURL:              req.BaseURL,
			HttpMethod:           req.HttpMethod,
			HeadMsg:              req.HeadMsg,
			Form:                 req.Form,
			RequestMapping:       req.RequestMapping,
			ResponseMapping:      req.ResponseMapping,
			ResponseBody:         req.ResponseBody,
			ResponseTokenField:   req.ResponseTokenField,
			IsPrivate:            req.IsPrivate,
			IsChatModel:          req.IsChatModel,
			ApiKey:               req.ApiKey,
			Enabled:              req.Enabled,
			MaxConcurrency:       req.MaxConcurrency,
			QueueLimit:           req.QueueLimit,
			TimeoutSeconds:       req.TimeoutSeconds,
			ExpectedSeconds:      req.ExpectedSeconds,
			RetryTimes:           req.RetryTimes,
			RetryQueueMaxSeconds: req.RetryQueueMaxSeconds,
			AutoCleanSeconds:     req.AutoCleanSeconds,
			Remark:               req.Remark,
			IsOwner:              req.IsOwner,
			OperatorName:         req.OperatorName,
			TokenConfig:          req.TokenConfig,
		})
		if err != nil {
			return err
		}
		return nil
	}
	// 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
	model, err := dao.Model.GetByAcrossTenant(ctx, &entity.AsynchModel{
		SQLBaseDO: beans.SQLBaseDO{Id: req.ID},
	})
	if err != nil {
		return err
	}
	if model.TenantId == 1 {
		insertDto := new(dto.CreateModelReq)
		err = gconv.Struct(req, insertDto)
		if err != nil {
			return err
		}
		_, err = dao.Model.Insert(ctx, &entity.AsynchModel{
			ModelName:            req.ModelName,
			ModelType:            req.ModelType,
			BaseURL:              req.BaseURL,
			HttpMethod:           req.HttpMethod,
			HeadMsg:              req.HeadMsg,
			Form:                 req.Form,
			RequestMapping:       req.RequestMapping,
			ResponseMapping:      req.ResponseMapping,
			ResponseBody:         req.ResponseBody,
			ResponseTokenField:   req.ResponseTokenField,
			IsPrivate:            req.IsPrivate,
			IsChatModel:          req.IsChatModel,
			ApiKey:               req.ApiKey,
			Enabled:              req.Enabled,
			MaxConcurrency:       req.MaxConcurrency,
			QueueLimit:           req.QueueLimit,
			TimeoutSeconds:       req.TimeoutSeconds,
			ExpectedSeconds:      req.ExpectedSeconds,
			RetryTimes:           req.RetryTimes,
			RetryQueueMaxSeconds: req.RetryQueueMaxSeconds,
			AutoCleanSeconds:     req.AutoCleanSeconds,
			Remark:               req.Remark,
			IsOwner:              req.IsOwner,
			OperatorName:         req.OperatorName,
			TokenConfig:          req.TokenConfig,
		})
		return err
	}
	_, err = dao.Model.Update(ctx, &entity.AsynchModel{
		SQLBaseDO:            beans.SQLBaseDO{Id: req.ID},
		ModelName:            req.ModelName,
		ModelType:            req.ModelType,
		BaseURL:              req.BaseURL,
		HttpMethod:           req.HttpMethod,
		HeadMsg:              req.HeadMsg,
		Form:                 req.Form,
		RequestMapping:       req.RequestMapping,
		ResponseMapping:      req.ResponseMapping,
		ResponseBody:         req.ResponseBody,
		ResponseTokenField:   req.ResponseTokenField,
		IsPrivate:            req.IsPrivate,
		IsChatModel:          req.IsChatModel,
		ApiKey:               req.ApiKey,
		Enabled:              req.Enabled,
		MaxConcurrency:       req.MaxConcurrency,
		QueueLimit:           req.QueueLimit,
		TimeoutSeconds:       req.TimeoutSeconds,
		ExpectedSeconds:      req.ExpectedSeconds,
		RetryTimes:           req.RetryTimes,
		RetryQueueMaxSeconds: req.RetryQueueMaxSeconds,
		AutoCleanSeconds:     req.AutoCleanSeconds,
		Remark:               req.Remark,
		IsOwner:              req.IsOwner,
		OperatorName:         req.OperatorName,
		TokenConfig:          req.TokenConfig,
	})
	return err
}

func (s *modelService) Delete(ctx context.Context, req *dto.DeleteModelReq) error {
	_, err := dao.Model.Delete(ctx, &entity.AsynchModel{
		SQLBaseDO: beans.SQLBaseDO{Id: req.ID},
	})
	return err
}

func (s *modelService) Get(ctx context.Context, req *dto.GetModelReq) (*dto.GetModelRes, error) {
	model, err := dao.Model.Get(ctx, &entity.AsynchModel{
		SQLBaseDO: beans.SQLBaseDO{Id: req.ID},
	})
	if err != nil {
		return nil, err
	}
	model.Form = util.ParseJSONField(model.Form)
	model.RequestMapping = util.ParseJSONField(model.RequestMapping)
	model.ResponseMapping = util.ParseJSONField(model.ResponseMapping)
	model.ResponseBody = util.ParseJSONField(model.ResponseBody)
	model.TokenConfig = util.ParseJSONField(model.TokenConfig)
	return &dto.GetModelRes{
		Model: model,
	}, nil
}

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

	req.IsOwner = gconv.PtrInt(1)
	admin, err := gateway.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, 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 = util.ParseJSONField(m.Form)
		m.RequestMapping = util.ParseJSONField(m.RequestMapping)
		m.ResponseMapping = util.ParseJSONField(m.ResponseMapping)
		m.ResponseBody = util.ParseJSONField(m.ResponseBody)
		m.TokenConfig = util.ParseJSONField(m.TokenConfig)
	}
	return &dto.ListModelRes{
		List:  models,
		Total: total,
	}, nil
}

// GetModelTypesFromConfig 从配置文件读取模型类型
func GetModelTypesFromConfig() (res *dto.TypeItem, err error) {
	// 返回副本，避免外部修改
	types := make(map[int]string, len(public.ModelTypeName))
	for k, v := range public.ModelTypeName {
		types[k] = v
	}
	return &dto.TypeItem{
		Type: types,
	}, nil
}

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.GetByAcrossTenant(ctx, &entity.AsynchModel{
		SQLBaseDO: beans.SQLBaseDO{Id: 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.Get(ctx, &entity.AsynchModel{
		IsChatModel: new(1),
	})
	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, &entity.AsynchModel{
					SQLBaseDO:   beans.SQLBaseDO{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, &entity.AsynchModel{
			SQLBaseDO:   beans.SQLBaseDO{Id: currentModel.Id},
			IsChatModel: gconv.PtrInt(1),
		})
		return err
	})
	return err
}

func (s *modelService) GetIsChatModel(ctx context.Context) (*dto.GetIsChatModelRes, error) {
	model, err := dao.Model.Get(ctx, &entity.AsynchModel{
		IsChatModel: new(1),
	})
	if err != nil {
		return nil, err
	}
	if model == nil {
		return nil, nil
	}
	model.Form = util.ParseJSONField(model.Form)
	model.RequestMapping = util.ParseJSONField(model.RequestMapping)
	model.ResponseMapping = util.ParseJSONField(model.ResponseMapping)
	model.ResponseBody = util.ParseJSONField(model.ResponseBody)
	model.TokenConfig = util.ParseJSONField(model.TokenConfig)
	return &dto.GetIsChatModelRes{
		Model: model,
	}, nil
}