package service

import (
	"context"
	"rag/common/eino"
	"rag/consts/model"
	"rag/consts/task"
	"rag/dao"
	"rag/model/dto"
	"rag/model/entity"

	"github.com/gogf/gf/v2/errors/gerror"
	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/util/gconv"
)

var ModelService = new(modelService)

type modelService struct{}

// GetModelAllEnums 获取模型全量枚举（模型类型 + 配置类型 合并）
func (s *modelService) GetModelAllEnums(ctx context.Context, req *dto.GetModelAllEnumsReq) (res *dto.GetModelEnumRes, err error) {
	_, _ = ctx, req
	res = new(dto.GetModelEnumRes)

	// 获取所有模型类型
	modelTypeRes := model.GetAllModelTypeEnums()

	var options []dto.ModelEnumOption
	for _, mt := range modelTypeRes.Options {
		// 构造 modelType
		modelTypeStr := gconv.String(mt.Key)
		modelType := model.ModelType(gconv.PtrString(modelTypeStr))

		// 获取对应配置类型
		configRes := model.GetAllModelConfigTypeEnums(modelType)

		// 把 configRes.Options 转成目标类型
		var configList []dto.ModelKeyValue
		err = gconv.Structs(configRes.Options, &configList)
		if err != nil {
			return
		}
		options = append(options, dto.ModelEnumOption{
			Key:         mt.Key,
			Value:       mt.Value,
			ConfigTypes: configList,
		})
	}

	res.Options = options
	return
}

func (s *modelService) GetModelConfigFormFields(ctx context.Context, req *dto.GetModelConfigFormFieldsReq) (*dto.GetModelConfigFormFieldsRes, error) {
	_ = ctx

	fields := make([]map[string]interface{}, 0)

	// ===================== 固定基础字段（CreateModelReq 前4个）=====================
	// 1. 模型类型：固定只读字段
	fields = append(fields, map[string]interface{}{
		"name":     "modelType",
		"label":    "模型类型",
		"type":     "text",
		"disabled": true,
		"required": true,
		"value":    model.GetModelTypeDescByCode(req.ModelType),
	})

	var configTypeValue = "未知类型"
	if *req.ModelType == *model.ModelTypeVector.Code() {
		configTypeValue = model.GetVectorDescByCode(req.ConfigType)
	} else if *req.ModelType == *model.ModelTypeChat.Code() {
		configTypeValue = model.GetChatDescByCode(req.ConfigType)
	}

	// 2. 配置类型：固定只读字段
	fields = append(fields, map[string]interface{}{
		"name":     "configType",
		"label":    "配置类型",
		"type":     "text",
		"disabled": true,
		"required": true,
		"value":    configTypeValue,
	})

	// 3. 基础信息
	fields = append(fields, []map[string]interface{}{
		{
			"name":        "modelName",
			"label":       "模型名称",
			"type":        "input",
			"required":    true,
			"placeholder": "例如：DeepSeek 对话模型",
		},
		{
			"name":     "modelDesc",
			"label":    "模型描述",
			"type":     "textarea",
			"required": false,
		},
	}...)

	// 4. 通用模型名称字段
	fields = append(fields, map[string]interface{}{
		"name":        "model",
		"label":       "模型类型",
		"type":        "input",
		"required":    true,
		"placeholder": "例如：deepseek-chat / text-embedding-3-small",
	})

	// ===================== 动态配置内容 ConfigContent =====================

	// 根据模型类型 + 配置类型生成动态字段
	switch *req.ModelType {
	case *model.ModelTypeChat.Code():
		switch *req.ConfigType {
		case *model.ModelConfigTypeChatArk.Code():
			fields = append(fields, map[string]interface{}{"name": "api_key", "label": "API Key", "type": "input", "required": true})

		case *model.ModelConfigTypeChatArkBot.Code():
			fields = append(fields, map[string]interface{}{"name": "api_key", "label": "API Key", "type": "input", "required": true})

		case *model.ModelConfigTypeChatClaude.Code():
			fields = append(fields, []map[string]interface{}{
				{"name": "by_bedrock", "label": "使用 AWS Bedrock", "type": "switch", "default": true},
				{"name": "access_key", "label": "Access Key", "type": "input"},
				{"name": "secret_access_key", "label": "Secret Access Key", "type": "input"},
				{"name": "region", "label": "Region", "type": "input"},
				{"name": "api_key", "label": "API Key", "type": "input"},
				{"name": "base_url", "label": "Base URL", "type": "input"},
			}...)

		case *model.ModelConfigTypeChatDeepSeek.Code():
			fields = append(fields, []map[string]interface{}{
				{"name": "api_key", "label": "API Key", "type": "input", "required": true},
				{"name": "base_url", "label": "Base URL", "type": "input", "default": "https://api.deepseek.com"},
			}...)

		case *model.ModelConfigTypeChatOllama.Code():
			fields = append(fields, map[string]interface{}{"name": "base_url", "label": "Base URL", "type": "input", "required": true, "default": "http://127.0.0.1:11434"})

		case *model.ModelConfigTypeChatOpenAI.Code():
			fields = append(fields, []map[string]interface{}{
				{"name": "api_key", "label": "API Key", "type": "input", "required": true},
				{"name": "by_azure", "label": "使用 Azure", "type": "switch", "default": true},
				{"name": "base_url", "label": "Base URL", "type": "input"},
				{"name": "api_version", "label": "API Version", "type": "input"},
			}...)

		case *model.ModelConfigTypeChatQianfan.Code():
			fields = append(fields, []map[string]interface{}{
				{"name": "access_key", "label": "Access Key", "type": "input", "required": true},
				{"name": "secret_key", "label": "Secret Key", "type": "input", "required": true},
			}...)

		case *model.ModelConfigTypeChatQwen.Code():
			fields = append(fields, []map[string]interface{}{
				{"name": "api_key", "label": "API Key", "type": "input", "required": true},
				{"name": "base_url", "label": "Base URL", "type": "input"},
			}...)
		}

	case *model.ModelTypeVector.Code():
		switch *req.ConfigType {
		case *model.ModelConfigTypeVectorArk.Code():
			fields = append(fields, []map[string]interface{}{
				{"name": "api_key", "label": "API Key", "type": "input", "required": true},
				{"name": "api_type", "label": "API Type", "type": "input"},
			}...)

		case *model.ModelConfigTypeVectorOllama.Code():
			fields = append(fields, map[string]interface{}{"name": "base_url", "label": "Base URL", "type": "input", "required": true, "default": "http://127.0.0.1:11434"})

		case *model.ModelConfigTypeVectorOpenAI.Code():
			fields = append(fields, []map[string]interface{}{
				{"name": "api_key", "label": "API Key", "type": "input", "required": true},
				{"name": "by_azure", "label": "使用 Azure", "type": "switch", "default": true},
				{"name": "base_url", "label": "Base URL", "type": "input"},
				{"name": "api_version", "label": "API Version", "type": "input"},
			}...)

		case *model.ModelConfigTypeVectorQianfan.Code():
			fields = append(fields, []map[string]interface{}{
				{"name": "access_key", "label": "Access Key", "type": "input", "required": true},
				{"name": "secret_key", "label": "Secret Key", "type": "input", "required": true},
			}...)

		case *model.ModelConfigTypeVectorTencentCloud.Code():
			fields = append(fields, []map[string]interface{}{
				{"name": "secret_id", "label": "Secret ID", "type": "input", "required": true},
				{"name": "secret_key", "label": "Secret Key", "type": "input", "required": true},
				{"name": "region", "label": "Region", "type": "input", "required": true, "default": "ap-beijing"},
			}...)
		case *model.ModelConfigTypeVectorDashScope.Code():
			fields = append(fields, map[string]interface{}{"name": "api_key", "label": "API Key", "type": "input", "required": true})
		}
	}

	return &dto.GetModelConfigFormFieldsRes{
		ModelType:  req.ModelType,
		ConfigType: req.ConfigType,
		Fields:     fields,
	}, nil
}

func (s *modelService) Create(ctx context.Context, req *dto.CreateModelReq) (res *dto.CreateModelRes, err error) {
	count, err := dao.Model.Count(ctx, &dto.GetModelReq{
		ModelType: req.ModelType,
	})
	if err != nil {
		return
	}
	if count > 0 {
		err = gerror.New("模型配置已存在")
		return
	}
	var id int64
	id, err = dao.Model.Insert(ctx, req)
	if err != nil {
		return
	}
	res = &dto.CreateModelRes{Id: id}
	err = s.refresh(ctx, id)
	return
}

func (s *modelService) Update(ctx context.Context, req *dto.UpdateModelReq) (err error) {
	count, err := dao.Task.Count(ctx, &dto.GetTaskReq{
		TaskStatus: task.TaskStatusRunning,
	})
	if err != nil {
		return err
	}
	if !g.IsEmpty(count) {
		err = gerror.New("任务正在执行中，模型配置暂时不可修改，请稍后再试")
		return
	}
	var updateCount int64
	updateCount, err = dao.Model.Update(ctx, req)
	if err != nil {
		return
	}
	if !g.IsEmpty(updateCount) {
		err = s.refresh(ctx, req.Id)
		if err != nil {
			return err
		}
	}
	return
}

func (s *modelService) refresh(ctx context.Context, id int64) (err error) {
	var modelDO *entity.Model
	modelDO, err = dao.Model.Get(ctx, &dto.GetModelReq{
		Id: id,
	})
	if err != nil {
		return err
	}
	if *modelDO.ModelType == *model.ModelTypeChat.Code() {
		if err = eino.RefreshTenantChatModel(ctx, modelDO); err != nil {
			return err
		}
	}

	if *modelDO.ModelType == *model.ModelTypeVector.Code() {
		if err = eino.RefreshTenantEmbedder(ctx, modelDO); err != nil {
			return err
		}
	}

	return
}

func (s *modelService) Delete(ctx context.Context, req *dto.DeleteModelReq) (err error) {
	_, err = dao.Model.Delete(ctx, req)
	return
}

func (s *modelService) Get(ctx context.Context, req *dto.GetModelReq) (res *dto.ModelVO, err error) {
	r, err := dao.Model.Get(ctx, req)
	err = gconv.Struct(r, &res)
	return
}

func (s *modelService) List(ctx context.Context, req *dto.ListModelReq) (res *dto.ListModelRes, err error) {
	list, total, err := dao.Model.List(ctx, req)
	if err != nil {
		return nil, err
	}
	res = &dto.ListModelRes{
		Total: total,
	}
	err = gconv.Struct(list, &res.List)
	return
}