ragflow/internal/entity/models/gitee.go

//
//  Copyright 2026 The InfiniFlow Authors. All Rights Reserved.
//
//  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 models

import (
	"bufio"
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"io"
	"mime/multipart"
	"net/http"
	"ragflow/internal/common"
	"strings"
	"time"
)

// GiteeModel implements ModelDriver for Gitee
type GiteeModel struct {
	BaseURL    map[string]string
	URLSuffix  URLSuffix
	httpClient *http.Client // Reusable HTTP client with connection pool
}

// NewGiteeModel creates a new Gitee model instance
func NewGiteeModel(baseURL map[string]string, urlSuffix URLSuffix) *GiteeModel {
	return &GiteeModel{
		BaseURL:   baseURL,
		URLSuffix: urlSuffix,
		httpClient: &http.Client{
			Timeout: 120 * time.Second,
			Transport: &http.Transport{
				MaxIdleConns:        100,
				MaxIdleConnsPerHost: 10,
				IdleConnTimeout:     90 * time.Second,
				DisableCompression:  false,
			},
		},
	}
}

func (g *GiteeModel) NewInstance(baseURL map[string]string) ModelDriver {
	return nil
}

func (g *GiteeModel) Name() string {
	return "gitee"
}

// ChatWithMessages sends multiple messages with roles and returns response
func (g *GiteeModel) ChatWithMessages(modelName string, messages []Message, apiConfig *APIConfig, chatModelConfig *ChatConfig) (*ChatResponse, error) {
	if apiConfig == nil || apiConfig.ApiKey == nil || *apiConfig.ApiKey == "" {
		return nil, fmt.Errorf("api key is nil or empty")
	}

	if len(messages) == 0 {
		return nil, fmt.Errorf("messages is empty")
	}

	region := "default"
	if apiConfig.Region != nil && *apiConfig.Region != "" {
		region = *apiConfig.Region
	}
	url := fmt.Sprintf("%s/%s", g.BaseURL[region], g.URLSuffix.Chat)

	// Convert messages to the format expected by API
	apiMessages := make([]map[string]interface{}, len(messages))
	for i, msg := range messages {
		apiMessages[i] = map[string]interface{}{
			"role":    msg.Role,
			"content": msg.Content,
		}
	}
	common.Info(fmt.Sprintf("GiteeAPI messages: %+v", apiMessages))

	// Build request body
	reqBody := map[string]interface{}{
		"model":       modelName,
		"messages":    apiMessages,
		"stream":      false,
		"temperature": 1,
	}

	if chatModelConfig != nil {
		if chatModelConfig.Stream != nil {
			reqBody["stream"] = *chatModelConfig.Stream
		}

		if chatModelConfig.MaxTokens != nil {
			reqBody["max_tokens"] = *chatModelConfig.MaxTokens
		}

		if chatModelConfig.Temperature != nil {
			reqBody["temperature"] = *chatModelConfig.Temperature
		}

		if chatModelConfig.TopP != nil {
			reqBody["top_p"] = *chatModelConfig.TopP
		}

		if chatModelConfig.Stop != nil {
			reqBody["stop"] = *chatModelConfig.Stop
		}

		if chatModelConfig.Thinking != nil {
			if *chatModelConfig.Thinking {
				reqBody["thinking"] = map[string]interface{}{
					"type": "enabled",
				}
			} else {
				reqBody["thinking"] = map[string]interface{}{
					"type": "disabled",
				}
			}
		}
	}

	jsonData, err := json.Marshal(reqBody)
	if err != nil {
		return nil, fmt.Errorf("failed to marshal request: %w", err)
	}

	common.Info(fmt.Sprintf("GiteeAPI request body: %s", string(jsonData)))

	req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
	if err != nil {
		return nil, fmt.Errorf("failed to create request: %w", err)
	}

	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", *apiConfig.ApiKey))

	resp, err := g.httpClient.Do(req)
	if err != nil {
		return nil, fmt.Errorf("failed to send request: %w", err)
	}
	defer resp.Body.Close()

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("failed to read response: %w", err)
	}

	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("API request failed with status %d: %s", resp.StatusCode, string(body))
	}

	// Parse response
	var result map[string]interface{}
	if err := json.Unmarshal(body, &result); err != nil {
		return nil, fmt.Errorf("failed to parse response: %w", err)
	}

	choices, ok := result["choices"].([]interface{})
	if !ok || len(choices) == 0 {
		return nil, fmt.Errorf("no choices in response")
	}

	firstChoice, ok := choices[0].(map[string]interface{})
	if !ok {
		return nil, fmt.Errorf("invalid choice format")
	}

	messageMap, ok := firstChoice["message"].(map[string]interface{})
	if !ok {
		return nil, fmt.Errorf("invalid message format")
	}

	content, ok := messageMap["content"].(string)
	if !ok {
		return nil, fmt.Errorf("invalid content format")
	}

	// Handle thinking/reasoning if enabled
	var reasonContent string
	if chatModelConfig != nil && chatModelConfig.Thinking != nil && *chatModelConfig.Thinking {
		// Try to get reasoning_content directly first
		if rc, ok := messageMap["reasoning_content"].(string); ok && rc != "" {
			reasonContent = rc
			if reasonContent[0] == '\n' {
				reasonContent = reasonContent[1:]
			}
		} else {
			// Fall back to parsing <think> tags from content
			reasoning, answer := GetThinkingAndAnswer(chatModelConfig.ModelClass, &content)
			if reasoning != nil {
				reasonContent = *reasoning
				content = *answer
			}
		}
	}

	chatResponse := &ChatResponse{
		Answer:        &content,
		ReasonContent: &reasonContent,
	}

	return chatResponse, nil
}

// ChatStreamlyWithSender sends messages and streams response via sender function (best performance, no channel)
func (g *GiteeModel) ChatStreamlyWithSender(modelName string, messages []Message, apiConfig *APIConfig, chatModelConfig *ChatConfig, sender func(*string, *string) error) error {
	if len(messages) == 0 {
		return fmt.Errorf("messages is empty")
	}

	var region = "default"
	if apiConfig != nil && apiConfig.Region != nil && *apiConfig.Region != "" {
		region = *apiConfig.Region
	}

	url := fmt.Sprintf("%s/chat/completions", g.BaseURL[region])

	// Convert messages to API format
	apiMessages := make([]map[string]interface{}, len(messages))
	for i, msg := range messages {
		apiMessages[i] = map[string]interface{}{
			"role":    msg.Role,
			"content": msg.Content,
		}
	}

	// Build request body with streaming enabled
	reqBody := map[string]interface{}{
		"model":       modelName,
		"messages":    apiMessages,
		"stream":      true,
		"temperature": 1,
	}

	if chatModelConfig.Stream != nil {
		reqBody["stream"] = *chatModelConfig.Stream
	}

	if chatModelConfig.MaxTokens != nil {
		reqBody["max_tokens"] = *chatModelConfig.MaxTokens
	}

	if chatModelConfig.Temperature != nil {
		reqBody["temperature"] = *chatModelConfig.Temperature
	}

	if chatModelConfig.DoSample != nil {
		reqBody["do_sample"] = *chatModelConfig.DoSample
	}

	if chatModelConfig.TopP != nil {
		reqBody["top_p"] = *chatModelConfig.TopP
	}

	if chatModelConfig.Stop != nil {
		reqBody["stop"] = *chatModelConfig.Stop
	}

	if chatModelConfig.Thinking != nil {
		if *chatModelConfig.Thinking {
			reqBody["thinking"] = map[string]interface{}{
				"type": "enabled",
			}
		} else {
			reqBody["thinking"] = map[string]interface{}{
				"type": "disabled",
			}
		}
	}

	jsonData, err := json.Marshal(reqBody)
	if err != nil {
		return fmt.Errorf("failed to marshal request: %w", err)
	}

	req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
	if err != nil {
		return fmt.Errorf("failed to create request: %w", err)
	}

	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", *apiConfig.ApiKey))

	resp, err := g.httpClient.Do(req)
	if err != nil {
		return fmt.Errorf("failed to send request: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		body, _ := io.ReadAll(resp.Body)
		return fmt.Errorf("API request failed with status %d: %s", resp.StatusCode, string(body))
	}

	reserveText := ""
	thinkingPhase := false
	answerPhase := false

	// SSE parsing: read line by line
	scanner := bufio.NewScanner(resp.Body)
	scanner.Buffer(make([]byte, 64*1024), 1024*1024)
	for scanner.Scan() {
		line := scanner.Text()
		common.Info(line)

		// SSE data line starts with "data:"
		if !strings.HasPrefix(line, "data:") {
			continue
		}

		// Extract JSON after "data:"
		data := strings.TrimSpace(line[5:])

		// [DONE] marks the end of stream
		if data == "[DONE]" {
			break
		}

		// Parse the JSON event
		var event map[string]interface{}
		if err = json.Unmarshal([]byte(data), &event); err != nil {
			continue
		}

		choices, ok := event["choices"].([]interface{})
		if !ok || len(choices) == 0 {
			continue
		}

		firstChoice, ok := choices[0].(map[string]interface{})
		if !ok {
			continue
		}

		delta, ok := firstChoice["delta"].(map[string]interface{})
		if !ok {
			continue
		}

		content, ok := delta["content"].(string)
		if ok && content != "" {
			if content == "<think>" {
				thinkingPhase = true
				continue

			} else if content == "</think>" {
				thinkingPhase = false
				answerPhase = true
				continue
			}

			if thinkingPhase {
				if err = sender(nil, &content); err != nil {
					return err
				}
				reserveText = ""
			} else if answerPhase {
				if err = sender(&content, nil); err != nil {
					return err
				}
				reserveText = ""
			} else {
				content = strings.Trim(content, "\n")
				content = strings.Trim(content, " ")
				if content != "" {
					reserveText += content
				}
			}
		}

		finishReason, ok := firstChoice["finish_reason"].(string)
		if ok && finishReason != "" {
			break
		}
	}

	if reserveText != "" {
		if err = sender(&reserveText, nil); err != nil {
			return err
		}
	}

	// Send [DONE] marker for OpenAI compatibility
	endOfStream := "[DONE]"
	if err = sender(&endOfStream, nil); err != nil {
		return err
	}

	return scanner.Err()
}

type giteeEmbeddingResponse struct {
	Object string               `json:"object"`
	Data   []giteeEmbeddingData `json:"data"`
	Model  string               `json:"model"`
	Usage  giteeUsage           `json:"usage"`
}

type giteeEmbeddingData struct {
	Object    string    `json:"object"`
	Embedding []float64 `json:"embedding"`
	Index     int       `json:"index"`
}

type giteeUsage struct {
	PromptTokens int `json:"prompt_tokens"`
	TotalTokens  int `json:"total_tokens"`
}

// Embed embeds a list of texts into embeddings
func (g *GiteeModel) Embed(modelName *string, texts []string, apiConfig *APIConfig, embeddingConfig *EmbeddingConfig) ([]EmbeddingData, error) {
	if len(texts) == 0 {
		return []EmbeddingData{}, nil
	}

	if apiConfig == nil || apiConfig.ApiKey == nil || *apiConfig.ApiKey == "" {
		return nil, fmt.Errorf("api key is required")
	}

	if modelName == nil || *modelName == "" {
		return nil, fmt.Errorf("model name is required")
	}

	region := "default"
	if apiConfig.Region != nil && *apiConfig.Region != "" {
		region = *apiConfig.Region
	}

	baseURL := g.BaseURL["default"]
	if region != "default" {
		if regional, ok := g.BaseURL[region]; ok && regional != "" {
			baseURL = regional
		}
	}
	if baseURL == "" {
		return nil, fmt.Errorf("gitee: no base URL configured for default region")
	}

	url := fmt.Sprintf("%s/%s", strings.TrimSuffix(baseURL, "/"), g.URLSuffix.Embedding)

	reqBody := map[string]interface{}{
		"model": *modelName,
		"input": texts,
	}
	if embeddingConfig != nil && embeddingConfig.Dimension > 0 {
		reqBody["dimensions"] = embeddingConfig.Dimension
	}

	jsonData, err := json.Marshal(reqBody)
	if err != nil {
		return nil, fmt.Errorf("failed to marshal request: %w", err)
	}

	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
	defer cancel()

	req, err := http.NewRequestWithContext(ctx, "POST", url, bytes.NewBuffer(jsonData))
	if err != nil {
		return nil, fmt.Errorf("failed to create request: %w", err)
	}

	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", *apiConfig.ApiKey))

	resp, err := g.httpClient.Do(req)
	if err != nil {
		return nil, fmt.Errorf("failed to send request: %w", err)
	}
	defer resp.Body.Close()

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("failed to read response: %w", err)
	}

	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("Gitee embeddings API error: %s, body: %s", resp.Status, string(body))
	}

	var parsed giteeEmbeddingResponse
	if err = json.Unmarshal(body, &parsed); err != nil {
		return nil, fmt.Errorf("failed to parse response: %w", err)
	}

	var embeddings []EmbeddingData
	for _, dataElem := range parsed.Data {
		var embeddingData EmbeddingData
		embeddingData.Embedding = dataElem.Embedding
		embeddingData.Index = dataElem.Index
		embeddings = append(embeddings, embeddingData)
	}

	return embeddings, nil
}

type giteeRerankRequest struct {
	Model           string   `json:"model"`
	Query           string   `json:"query"`
	Documents       []string `json:"documents"`
	TopN            int      `json:"top_n"`
	ReturnDocuments bool     `json:"return_documents"`
}

// Rerank calculates similarity scores between query and documents
func (g *GiteeModel) Rerank(modelName *string, query string, documents []string, apiConfig *APIConfig, rerankConfig *RerankConfig) (*RerankResponse, error) {
	if len(documents) == 0 {
		return &RerankResponse{}, nil
	}

	if apiConfig == nil || apiConfig.ApiKey == nil || *apiConfig.ApiKey == "" {
		return nil, fmt.Errorf("api key is required")
	}

	if modelName == nil || *modelName == "" {
		return nil, fmt.Errorf("model name is required")
	}

	region := "default"
	if apiConfig.Region != nil && *apiConfig.Region != "" {
		region = *apiConfig.Region
	}

	baseURL := g.BaseURL["default"]
	if region != "default" {
		if regional, ok := g.BaseURL[region]; ok && regional != "" {
			baseURL = regional
		}
	}
	if baseURL == "" {
		return nil, fmt.Errorf("gitee: no base URL configured for default region")
	}

	url := fmt.Sprintf("%s/%s", strings.TrimSuffix(baseURL, "/"), g.URLSuffix.Rerank)

	var topN = rerankConfig.TopN
	if rerankConfig.TopN == 0 {
		topN = len(documents)
	}

	reqBody := giteeRerankRequest{
		Model:           *modelName,
		Query:           query,
		Documents:       documents,
		TopN:            topN,
		ReturnDocuments: false,
	}

	jsonData, err := json.Marshal(reqBody)
	if err != nil {
		return nil, fmt.Errorf("failed to marshal request: %w", err)
	}

	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
	defer cancel()

	req, err := http.NewRequestWithContext(ctx, "POST", url, bytes.NewBuffer(jsonData))
	if err != nil {
		return nil, fmt.Errorf("failed to create request: %w", err)
	}

	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", *apiConfig.ApiKey))

	resp, err := g.httpClient.Do(req)
	if err != nil {
		return nil, fmt.Errorf("failed to send request: %w", err)
	}
	defer resp.Body.Close()

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("failed to read response: %w", err)
	}

	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("gitee rerank API error: %s, body: %s", resp.Status, string(body))
	}

	var rerankResponse RerankResponse
	if err = json.Unmarshal(body, &rerankResponse); err != nil {
		return nil, fmt.Errorf("failed to parse response: %w", err)
	}

	return &rerankResponse, nil
}

// TranscribeAudio transcribe audio
func (g *GiteeModel) TranscribeAudio(modelName *string, file *string, apiConfig *APIConfig, asrConfig *ASRConfig) (*ASRResponse, error) {
	return nil, fmt.Errorf("%s, no such method", g.Name())
}

func (z *GiteeModel) TranscribeAudioWithSender(modelName *string, file *string, apiConfig *APIConfig, asrConfig *ASRConfig, sender func(*string, *string) error) error {
	return fmt.Errorf("%s, no such method", z.Name())
}

// AudioSpeech convert text to audio
func (g *GiteeModel) AudioSpeech(modelName *string, audioContent *string, apiConfig *APIConfig, ttsConfig *TTSConfig) (*TTSResponse, error) {
	return nil, fmt.Errorf("%s, no such method", g.Name())
}

func (z *GiteeModel) AudioSpeechWithSender(modelName *string, audioContent *string, apiConfig *APIConfig, ttsConfig *TTSConfig, sender func(*string, *string) error) error {
	return fmt.Errorf("%s, no such method", z.Name())
}

type giteeOCRResponse struct {
	Text   string `json:"text_result"`
	Prompt string `json:"prompt"`
}

// OCRFile OCR file
func (g *GiteeModel) OCRFile(modelName *string, content []byte, imageURL *string, apiConfig *APIConfig, ocrConfig *OCRConfig) (*OCRFileResponse, error) {
	if imageURL == nil && content == nil {
		return nil, fmt.Errorf("url or content is required")
	}

	if apiConfig == nil || apiConfig.ApiKey == nil || *apiConfig.ApiKey == "" {
		return nil, fmt.Errorf("api key is required")
	}

	if modelName == nil || *modelName == "" {
		return nil, fmt.Errorf("model name is required")
	}

	region := "default"
	if apiConfig.Region != nil && *apiConfig.Region != "" {
		region = *apiConfig.Region
	}

	baseURL := g.BaseURL["default"]
	if region != "default" {
		if regional, ok := g.BaseURL[region]; ok && regional != "" {
			baseURL = regional
		}
	}
	if baseURL == "" {
		return nil, fmt.Errorf("gitee: no base URL configured for default region")
	}

	url := fmt.Sprintf("%s/%s", strings.TrimSuffix(baseURL, "/"), g.URLSuffix.OCR)

	payload := &bytes.Buffer{}
	writer := multipart.NewWriter(payload)

	if err := writer.WriteField("model", *modelName); err != nil {
		return nil, fmt.Errorf("failed to write model field: %w", err)
	}

	if imageURL != nil {
		if err := writer.WriteField("image", *imageURL); err != nil {
			return nil, fmt.Errorf("failed to write image URL: %w", err)
		}
	} else if content != nil && len(content) > 0 {
		part, err := writer.CreateFormFile("image", "image")
		if err != nil {
			return nil, fmt.Errorf("failed to create image form file: %w", err)
		}
		if _, err = part.Write(content); err != nil {
			return nil, fmt.Errorf("failed to write image content: %w", err)
		}
	} else {
		return nil, fmt.Errorf("image or image URL is required")
	}

	writer.Close()

	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
	defer cancel()

	req, err := http.NewRequestWithContext(ctx, "POST", url, payload)
	if err != nil {
		return nil, fmt.Errorf("failed to create request: %w", err)
	}

	req.Header.Set("Content-Type", writer.FormDataContentType())
	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", *apiConfig.ApiKey))

	resp, err := g.httpClient.Do(req)
	if err != nil {
		return nil, fmt.Errorf("failed to send request: %w", err)
	}
	defer resp.Body.Close()

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("failed to read response: %w", err)
	}

	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("gitee OCR API error: %s, body: %s", resp.Status, string(body))
	}

	var giteeResponse giteeOCRResponse
	if err = json.Unmarshal(body, &giteeResponse); err != nil {
		return nil, fmt.Errorf("failed to parse response: %w", err)
	}

	var ocrResponse = OCRFileResponse{
		Text: &giteeResponse.Text,
	}

	return &ocrResponse, nil
}

type giteeParseFileResponse struct {
	TaskID    string    `json:"task_id"`
	Status    string    `json:"status"`
	CreatedAt int64     `json:"created_at"`
	URLs      giteeURLs `json:"urls"`
}

type giteeURLs struct {
	Get    string `json:"get"`
	Cancel string `json:"cancel"`
}

// ParseFile parse file
func (g *GiteeModel) ParseFile(modelName *string, content []byte, documentURL *string, apiConfig *APIConfig, parseFileConfig *ParseFileConfig) (*ParseFileResponse, error) {
	if documentURL == nil && content == nil {
		return nil, fmt.Errorf("url or content is required")
	}

	if apiConfig == nil || apiConfig.ApiKey == nil || *apiConfig.ApiKey == "" {
		return nil, fmt.Errorf("api key is required")
	}

	if modelName == nil || *modelName == "" {
		return nil, fmt.Errorf("model name is required")
	}

	region := "default"
	if apiConfig.Region != nil && *apiConfig.Region != "" {
		region = *apiConfig.Region
	}

	baseURL := g.BaseURL["default"]
	if region != "default" {
		if regional, ok := g.BaseURL[region]; ok && regional != "" {
			baseURL = regional
		}
	}
	if baseURL == "" {
		return nil, fmt.Errorf("gitee: no base URL configured for default region")
	}

	url := fmt.Sprintf("%s/%s", strings.TrimSuffix(baseURL, "/"), g.URLSuffix.DocumentParse)

	payload := &bytes.Buffer{}
	writer := multipart.NewWriter(payload)

	if err := writer.WriteField("model", *modelName); err != nil {
		return nil, fmt.Errorf("failed to write model field: %w", err)
	}

	if documentURL != nil {
		if err := writer.WriteField("file", *documentURL); err != nil {
			return nil, fmt.Errorf("failed to write file URL: %w", err)
		}
	} else if content != nil && len(content) > 0 {
		part, err := writer.CreateFormFile("file", "file")
		if err != nil {
			return nil, fmt.Errorf("failed to create file form file: %w", err)
		}
		if _, err = part.Write(content); err != nil {
			return nil, fmt.Errorf("failed to write file content: %w", err)
		}
	} else {
		return nil, fmt.Errorf("file or file URL is required")
	}

	writer.Close()

	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
	defer cancel()

	req, err := http.NewRequestWithContext(ctx, "POST", url, payload)
	if err != nil {
		return nil, fmt.Errorf("failed to create request: %w", err)
	}

	req.Header.Set("Content-Type", writer.FormDataContentType())
	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", *apiConfig.ApiKey))

	resp, err := g.httpClient.Do(req)
	if err != nil {
		return nil, fmt.Errorf("failed to send request: %w", err)
	}
	defer resp.Body.Close()

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("failed to read response: %w", err)
	}

	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("gitee OCR API error: %s, body: %s", resp.Status, string(body))
	}

	var giteeParseFileResp giteeParseFileResponse
	if err = json.Unmarshal(body, &giteeParseFileResp); err != nil {
		return nil, fmt.Errorf("failed to parse response: %w", err)
	}

	_, err = g.getParseFile(&baseURL, apiConfig.ApiKey, &giteeParseFileResp.TaskID, 5*time.Second, 10)
	if err != nil {
		return nil, err
	}

	var parseFileResponse = ParseFileResponse{}

	return &parseFileResponse, nil
}

type giteeGetParseFileResponse struct {
}

func (g *GiteeModel) getParseFile(baseURL *string, apiKey, taskID *string, timeOut time.Duration, count int) (*giteeGetParseFileResponse, error) {
	url := fmt.Sprintf("%s/task/%s/status", strings.TrimSuffix(*baseURL, "/"), *taskID)

	reqBody := map[string]interface{}{}

	jsonData, err := json.Marshal(reqBody)
	if err != nil {
		return nil, fmt.Errorf("failed to marshal request: %w", err)
	}

	req, err := http.NewRequest("GET", url, bytes.NewBuffer(jsonData))
	if err != nil {
		return nil, fmt.Errorf("failed to create request: %w", err)
	}

	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", *apiKey))

	var resp *http.Response
	for i := 0; i < count; i++ {
		resp, err = g.httpClient.Do(req)
		if err != nil {
			return nil, fmt.Errorf("failed to send request: %w", err)
		}
		defer resp.Body.Close()

		var body []byte
		body, err = io.ReadAll(resp.Body)
		if err != nil {
			return nil, fmt.Errorf("failed to read response: %w", err)
		}

		if resp.StatusCode != http.StatusOK {
			return nil, fmt.Errorf("API request failed with status %d: %s", resp.StatusCode, string(body))
		}

		// Parse response
		var result map[string]interface{}
		if err = json.Unmarshal(body, &result); err != nil {
			return nil, fmt.Errorf("failed to parse response: %w", err)
		}

		time.Sleep(timeOut)
	}

	// if resp show the file is ok, download it. otherwise, provide timeout info
	return nil, nil
}

func (g *GiteeModel) ListModels(apiConfig *APIConfig) ([]string, error) {
	var region = "default"
	if apiConfig.Region != nil && *apiConfig.Region != "" {
		region = *apiConfig.Region
	}

	url := fmt.Sprintf("%s/%s", g.BaseURL[region], g.URLSuffix.Models)

	// Build request body
	reqBody := map[string]interface{}{}

	jsonData, err := json.Marshal(reqBody)
	if err != nil {
		return nil, fmt.Errorf("failed to marshal request: %w", err)
	}

	req, err := http.NewRequest("GET", url, bytes.NewBuffer(jsonData))
	if err != nil {
		return nil, fmt.Errorf("failed to create request: %w", err)
	}

	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", *apiConfig.ApiKey))

	resp, err := g.httpClient.Do(req)
	if err != nil {
		return nil, fmt.Errorf("failed to send request: %w", err)
	}
	defer resp.Body.Close()

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("failed to read response: %w", err)
	}

	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("API request failed with status %d: %s", resp.StatusCode, string(body))
	}

	// Parse response
	var modelList DSModelList
	if err = json.Unmarshal(body, &modelList); err != nil {
		return nil, fmt.Errorf("failed to parse response: %w", err)
	}

	var models []string
	for _, model := range modelList.Models {
		modelName := model.ID
		if model.OwnedBy != "" {
			modelName = model.ID + "@" + model.OwnedBy
		}
		models = append(models, modelName)
	}

	return models, nil
}

func (g *GiteeModel) Balance(apiConfig *APIConfig) (map[string]interface{}, error) {
	var region = "default"
	if apiConfig.Region != nil && *apiConfig.Region != "" {
		region = *apiConfig.Region
	}

	url := fmt.Sprintf("%s/%s", g.BaseURL[region], g.URLSuffix.Balance)

	// Build request body
	reqBody := map[string]interface{}{}

	jsonData, err := json.Marshal(reqBody)
	if err != nil {
		return nil, fmt.Errorf("failed to marshal request: %w", err)
	}

	req, err := http.NewRequest("GET", url, bytes.NewBuffer(jsonData))
	if err != nil {
		return nil, fmt.Errorf("failed to create request: %w", err)
	}

	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", *apiConfig.ApiKey))

	resp, err := g.httpClient.Do(req)
	if err != nil {
		return nil, fmt.Errorf("failed to send request: %w", err)
	}
	defer resp.Body.Close()

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("failed to read response: %w", err)
	}

	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("API request failed with status %d: %s", resp.StatusCode, string(body))
	}

	// Parse response
	var result map[string]interface{}
	if err = json.Unmarshal(body, &result); err != nil {
		return nil, fmt.Errorf("failed to parse response: %w", err)
	}

	balance := result["balance"].(float64)

	var response = map[string]interface{}{
		"balance":  balance,
		"currency": "CNY",
	}

	return response, nil
}

func (g *GiteeModel) CheckConnection(apiConfig *APIConfig) error {
	var region = "default"
	if apiConfig.Region != nil {
		region = *apiConfig.Region
	}

	url := fmt.Sprintf("%s/%s", g.BaseURL[region], g.URLSuffix.Status)

	// Build request body
	reqBody := map[string]interface{}{}

	jsonData, err := json.Marshal(reqBody)
	if err != nil {
		return fmt.Errorf("failed to marshal request: %w", err)
	}

	req, err := http.NewRequest("GET", url, bytes.NewBuffer(jsonData))
	if err != nil {
		return fmt.Errorf("failed to create request: %w", err)
	}

	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", *apiConfig.ApiKey))

	resp, err := g.httpClient.Do(req)
	if err != nil {
		return fmt.Errorf("failed to send request: %w", err)
	}
	defer resp.Body.Close()

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return fmt.Errorf("failed to read response: %w", err)
	}

	if resp.StatusCode != http.StatusOK {
		return fmt.Errorf("API request failed with status %d: %s", resp.StatusCode, string(body))
	}

	return nil
}

type giteeTaskListResponse struct {
	Total int             `json:"total"`
	Items []giteeTaskItem `json:"items"`
}

type giteeTaskItem struct {
	TaskID string `json:"task_id"`
	//Output      giteeTaskOutput `json:"output"`
	Status      string        `json:"status"`
	CreatedAt   int64         `json:"created_at"`
	StartedAt   int64         `json:"started_at,omitempty"`
	CompletedAt int64         `json:"completed_at,omitempty"`
	Price       float64       `json:"price"`
	Currency    string        `json:"currency"`
	URLs        giteeTaskURLs `json:"urls"`
}

type giteeTaskOutput struct {
	Segments []giteeSegment `json:"segments"`
}

type giteeSegment struct {
	Index   int    `json:"index"`
	Content string `json:"content"`
}
type giteeTaskURLs struct {
	Get    string `json:"get"`
	Cancel string `json:"cancel"`
}

func (g *GiteeModel) ListTasks(apiConfig *APIConfig) ([]ListTaskStatus, error) {
	var region = "default"
	if apiConfig.Region != nil && *apiConfig.Region != "" {
		region = *apiConfig.Region
	}

	url := fmt.Sprintf("%s/%s", g.BaseURL[region], g.URLSuffix.Tasks)

	// Build request body
	reqBody := map[string]interface{}{}

	jsonData, err := json.Marshal(reqBody)
	if err != nil {
		return nil, fmt.Errorf("failed to marshal request: %w", err)
	}

	req, err := http.NewRequest("GET", url, bytes.NewBuffer(jsonData))
	if err != nil {
		return nil, fmt.Errorf("failed to create request: %w", err)
	}

	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", *apiConfig.ApiKey))

	resp, err := g.httpClient.Do(req)
	if err != nil {
		return nil, fmt.Errorf("failed to send request: %w", err)
	}
	defer resp.Body.Close()

	var body []byte
	body, err = io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("failed to read response: %w", err)
	}

	var giteeTaskList giteeTaskListResponse
	if err = json.Unmarshal(body, &giteeTaskList); err != nil {
		return nil, fmt.Errorf("failed to parse response: %w", err)
	}

	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("API request failed with status %d: %s", resp.StatusCode, string(body))
	}

	taskListResp := []ListTaskStatus{}
	for _, item := range giteeTaskList.Items {
		taskListResp = append(taskListResp, ListTaskStatus{
			TaskID: item.TaskID,
			Status: item.Status,
		})
	}
	return taskListResp, nil
}

func (g *GiteeModel) ShowTask(taskID string, apiConfig *APIConfig) (*TaskResponse, error) {
	var region = "default"
	if apiConfig.Region != nil && *apiConfig.Region != "" {
		region = *apiConfig.Region
	}

	url := fmt.Sprintf("%s/%s/%s/get", g.BaseURL[region], g.URLSuffix.Task, taskID)

	// Build request body
	reqBody := map[string]interface{}{}

	jsonData, err := json.Marshal(reqBody)
	if err != nil {
		return nil, fmt.Errorf("failed to marshal request: %w", err)
	}

	req, err := http.NewRequest("GET", url, bytes.NewBuffer(jsonData))
	if err != nil {
		return nil, fmt.Errorf("failed to create request: %w", err)
	}

	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", *apiConfig.ApiKey))

	resp, err := g.httpClient.Do(req)
	if err != nil {
		return nil, fmt.Errorf("failed to send request: %w", err)
	}
	defer resp.Body.Close()

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("failed to read response: %w", err)
	}

	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("API request failed with status %d: %s", resp.StatusCode, string(body))
	}

	var taskOutput giteeTaskOutput
	if err = json.Unmarshal(body, &taskOutput); err != nil {
		return nil, fmt.Errorf("failed to parse response: %w", err)
	}

	taskResp := &TaskResponse{}

	for _, segment := range taskOutput.Segments {
		taskResp.Segments = append(taskResp.Segments, TaskSegment{
			Index:   segment.Index,
			Content: segment.Content,
		})
	}

	return taskResp, nil
}