/*
 * Copyright 2025 coze-dev Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package vo

import (
	"github.com/coze-dev/coze-studio/backend/api/model/app/bot_common"
	"github.com/coze-dev/coze-studio/backend/bizpkg/llm/modelbuilder"
	"github.com/coze-dev/coze-studio/backend/pkg/lang/ptr"
)

type LLMParams struct {
	ModelName         string         `json:"modelName"`
	ModelType         int64          `json:"modelType"`
	Prompt            string         `json:"prompt"` // user prompt
	Temperature       *float64       `json:"temperature"`
	FrequencyPenalty  float64        `json:"frequencyPenalty"`
	PresencePenalty   float64        `json:"presencePenalty"`
	MaxTokens         int            `json:"maxTokens"`
	TopP              *float64       `json:"topP"`
	TopK              *int           `json:"topK"`
	EnableChatHistory bool           `json:"enableChatHistory"`
	SystemPrompt      string         `json:"systemPrompt"`
	ResponseFormat    ResponseFormat `json:"responseFormat"`
	ChatHistoryRound  int64          `json:"chatHistoryRound"`
}

type ResponseFormat int64

const (
	ResponseFormatText     ResponseFormat = 0
	ResponseFormatMarkdown ResponseFormat = 1
	ResponseFormatJSON     ResponseFormat = 2
)

func (l *LLMParams) ToModelBuilderLLMParams() *modelbuilder.LLMParams {
	m := modelbuilder.LLMParams{
		FrequencyPenalty: float32(l.FrequencyPenalty),
		PresencePenalty:  float32(l.PresencePenalty),
		MaxTokens:        l.MaxTokens,
	}

	if l.Temperature != nil {
		m.Temperature = ptr.Of(float32(ptr.From(l.Temperature)))
	}
	if l.TopP != nil {
		m.TopP = ptr.Of(float32(ptr.From(l.TopP)))
	}
	if l.TopK != nil {
		m.TopK = ptr.Of(int32(ptr.From(l.TopK)))
	}

	switch l.ResponseFormat {
	case ResponseFormatText:
		m.ResponseFormat = bot_common.ModelResponseFormat_Text
	case ResponseFormatMarkdown:
		m.ResponseFormat = bot_common.ModelResponseFormat_Markdown
	case ResponseFormatJSON:
		m.ResponseFormat = bot_common.ModelResponseFormat_JSON
	}

	return &m
}