package controllers

import (
	"bytes"
	"encoding/json"
	"fmt"
	"image"
	"image/draw"
	_ "image/gif"
	"image/jpeg"
	_ "image/png"
	"shudao-chat-go/models"
	"shudao-chat-go/utils"
	"strings"
	"time"

	"github.com/beego/beego/v2/server/web"
)

type SceneController struct {
	web.Controller
}

// 隐患识别获取历史记录
func (c *SceneController) GetHistoryRecognitionRecord() {
	// 从token中获取用户信息
	userInfo, err := utils.GetUserInfoFromContext(c.Ctx.Input.GetData("userInfo"))
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"statusCode": 401,
			"msg":        "获取用户信息失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}
	user_id := int64(userInfo.ID)
	if user_id == 0 {
		user_id = 1
	}

	var recognitionRecords []models.RecognitionRecord
	models.DB.Model(&models.RecognitionRecord{}).Where("user_id = ? AND is_deleted = ?", user_id, 0).Order("-updated_at").Find(&recognitionRecords)

	// 将原始OSS URL转换为代理URL，前端需要显示图片
	for i := range recognitionRecords {
		if recognitionRecords[i].OriginalImageUrl != "" {
			// 检查是否已经是代理URL格式
			if !strings.Contains(recognitionRecords[i].OriginalImageUrl, "/apiv1/oss/parse/?url=") {
				recognitionRecords[i].OriginalImageUrl = utils.GetProxyURL(recognitionRecords[i].OriginalImageUrl)
			}
		}
		if recognitionRecords[i].RecognitionImageUrl != "" {
			// 检查是否已经是代理URL格式
			if !strings.Contains(recognitionRecords[i].RecognitionImageUrl, "/apiv1/oss/parse/?url=") {
				recognitionRecords[i].RecognitionImageUrl = utils.GetProxyURL(recognitionRecords[i].RecognitionImageUrl)
			}
		}
	}

	//计算返回的总共的数据数量
	var total int64
	models.DB.Model(&models.RecognitionRecord{}).Where("user_id = ? AND is_deleted = ?", user_id, 0).Count(&total)
	c.Data["json"] = map[string]interface{}{
		"statusCode": 200,
		"msg":        "success",
		"data":       recognitionRecords, // 返回处理后的数据，包含代理URL
		"total":      total,
	}
	c.ServeJSON()
}

// 获取识别记录详情
func (c *SceneController) GetRecognitionRecordDetail() {
	recognition_record_id, _ := c.GetInt64("recognition_record_id")
	if recognition_record_id == 0 {
		c.Data["json"] = map[string]interface{}{
			"statusCode": 400,
			"msg":        "识别记录ID不能为空",
		}
		c.ServeJSON()
		return
	}

	var record models.RecognitionRecord
	if err := models.DB.Where("id = ? AND is_deleted = ?", recognition_record_id, 0).First(&record).Error; err != nil {
		c.Data["json"] = map[string]interface{}{
			"statusCode": 404,
			"msg":        "识别记录不存在",
		}
		c.ServeJSON()
		return
	}

	// 将Description字符串转换为数组
	var thirdScenes []string
	if record.Description != "" {
		thirdScenes = strings.Split(record.Description, " ")
	}

	// 通过关联表查询二级场景名称
	// var secondSceneNames []string
	// var recognitionRecordSecondScenes []models.RecognitionRecordSecondScene
	// models.DB.Preload("SecondScene").Where("recognition_record_id = ?", record.ID).Find(&recognitionRecordSecondScenes)

	// for _, rrss := range recognitionRecordSecondScenes {
	// 	secondSceneNames = append(secondSceneNames, rrss.SecondScene.SecondSceneName)
	// }

	// 将原始OSS URL转换为代理URL，前端需要显示图片
	originalImageURL := record.OriginalImageUrl
	recognitionImageURL := record.RecognitionImageUrl
	if originalImageURL != "" {
		// 检查是否已经是代理URL格式
		if !strings.Contains(originalImageURL, "/apiv1/oss/parse/?url=") {
			originalImageURL = utils.GetProxyURL(originalImageURL)
		}
	}
	if recognitionImageURL != "" {
		// 检查是否已经是代理URL格式
		if !strings.Contains(recognitionImageURL, "/apiv1/oss/parse/?url=") {
			recognitionImageURL = utils.GetProxyURL(recognitionImageURL)
		}
	}

	// 构建详情数据
	detailData := map[string]interface{}{
		"id":                    record.ID,
		"original_image_url":    originalImageURL,
		"recognition_image_url": recognitionImageURL,
		"user_id":               record.UserID,
		"title":                 record.Title,
		"description":           record.Description,
		"created_at":            record.CreatedAt,
		"updated_at":            record.UpdatedAt,
		// 添加与隐患识别接口一致的字段
		"labels":            record.Labels, // 二级场景名称数组
		"third_scenes":      thirdScenes,   // 三级场景名称数组
		"tag_type":          record.TagType,
		"scene_match":       record.SceneMatch,
		"tip_accuracy":      record.TipAccuracy,
		"effect_evaluation": record.EffectEvaluation,
		"user_remark":       record.UserRemark,
	}

	c.Data["json"] = map[string]interface{}{
		"statusCode": 200,
		"msg":        "success",
		"data":       detailData,
	}
	c.ServeJSON()
}

// 用户提交点评
func (c *SceneController) SubmitEvaluation() {
	var requestData models.RecognitionRecord
	if err := json.Unmarshal(c.Ctx.Input.RequestBody, &requestData); err != nil {
		c.Data["json"] = map[string]interface{}{
			"statusCode": 400,
			"msg":        "JSON解析失败: " + err.Error(),
		}
	}
	scene_match := requestData.SceneMatch
	tip_accuracy := requestData.TipAccuracy
	effect_evaluation := requestData.EffectEvaluation
	tx := models.DB.Begin()
	if err := tx.Model(&models.RecognitionRecord{}).Where("id = ?", requestData.ID).Updates(map[string]interface{}{
		"scene_match":       scene_match,
		"tip_accuracy":      tip_accuracy,
		"effect_evaluation": effect_evaluation,
		"user_remark":       requestData.UserRemark,
	}).Error; err != nil {
		tx.Rollback()
		c.Data["json"] = map[string]interface{}{
			"statusCode": 500,
			"msg":        "点评失败: " + err.Error(),
		}
	}
	tx.Commit()
	c.Data["json"] = map[string]interface{}{
		"statusCode": 200,
		"msg":        "success",
	}
	c.ServeJSON()
}

// 查询用户最新的一条识别记录是否点评
func (c *SceneController) GetLatestRecognitionRecord() {
	// 从token中获取用户信息
	userInfo, err := utils.GetUserInfoFromContext(c.Ctx.Input.GetData("userInfo"))
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"statusCode": 401,
			"msg":        "获取用户信息失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}
	user_id := int64(userInfo.ID)
	if user_id == 0 {
		user_id = 1
	}

	var recognitionRecord models.RecognitionRecord
	models.DB.Model(&models.RecognitionRecord{}).Where("user_id = ? AND is_deleted = ?", user_id, 0).Order("-created_at").First(&recognitionRecord)
	//如果数据为空，则无需判断上一条是否点评则构架一个假数据EffectEvaluation=1给前端
	if recognitionRecord.ID == 0 {
		recognitionRecord = models.RecognitionRecord{
			EffectEvaluation: 1,
		}
	}

	c.Data["json"] = map[string]interface{}{
		"statusCode": 200,
		"msg":        "success",
		"data":       recognitionRecord,
	}
	c.ServeJSON()
}

// 获取隐患识别三级场景标题查询正确和错误的示例图
func (c *SceneController) GetThirdSceneExampleImage() {
	// 从token中获取用户信息用于生成水印
	userInfo, err := utils.GetUserInfoFromContext(c.Ctx.Input.GetData("userInfo"))
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"statusCode": 401,
			"msg":        "获取用户信息失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}

	third_scene_name := c.GetString("third_scene_name")
	if third_scene_name == "" {
		c.Data["json"] = map[string]interface{}{
			"statusCode": 400,
			"msg":        "三级场景名称不能为空",
		}
		c.ServeJSON()
		return
	}
	var thirdScene models.ThirdScene
	models.DB.Where("third_scene_name = ? and is_deleted = ?", third_scene_name, 0).First(&thirdScene)

	if thirdScene.ID == 0 {
		c.Data["json"] = map[string]interface{}{
			"statusCode": 404,
			"msg":        "三级场景不存在",
		}
		c.ServeJSON()
		return
	}

	watermarkDate := time.Now().Format("2006/01/02")

	if thirdScene.CorrectExampleImage != "" {
		correctURL, err := generateWatermarkedExampleImage(thirdScene.CorrectExampleImage, userInfo.Name, userInfo.ContactNumber, watermarkDate, fmt.Sprintf("third_scene_correct_%d", thirdScene.ID))
		if err != nil {
			c.Data["json"] = map[string]interface{}{
				"statusCode": 500,
				"msg":        "正确示例图加水印失败: " + err.Error(),
			}
			c.ServeJSON()
			return
		}
		thirdScene.CorrectExampleImage = correctURL
	}

	if thirdScene.WrongExampleImage != "" {
		wrongURL, err := generateWatermarkedExampleImage(thirdScene.WrongExampleImage, userInfo.Name, userInfo.ContactNumber, watermarkDate, fmt.Sprintf("third_scene_wrong_%d", thirdScene.ID))
		if err != nil {
			c.Data["json"] = map[string]interface{}{
				"statusCode": 500,
				"msg":        "错误示例图加水印失败: " + err.Error(),
			}
			c.ServeJSON()
			return
		}
		thirdScene.WrongExampleImage = wrongURL
	}

	// 将示例图URL转换为代理URL，前端需要显示图片
	if thirdScene.CorrectExampleImage != "" {
		// 检查是否已经是代理URL格式
		if !strings.Contains(thirdScene.CorrectExampleImage, "/apiv1/oss/parse/?url=") {
			thirdScene.CorrectExampleImage = utils.GetProxyURL(thirdScene.CorrectExampleImage)
		}
	}
	if thirdScene.WrongExampleImage != "" {
		// 检查是否已经是代理URL格式
		if !strings.Contains(thirdScene.WrongExampleImage, "/apiv1/oss/parse/?url=") {
			thirdScene.WrongExampleImage = utils.GetProxyURL(thirdScene.WrongExampleImage)
		}
	}

	c.Data["json"] = map[string]interface{}{
		"statusCode": 200,
		"msg":        "success",
		"data":       thirdScene,
	}
	c.ServeJSON()
}

// generateWatermarkedExampleImage 为示例图添加水印并返回新的OSS代理URL
func generateWatermarkedExampleImage(originalURL, username, account, date, keyPrefix string) (string, error) {
	if originalURL == "" {
		return "", fmt.Errorf("示例图地址为空")
	}

	imageData, err := downloadImageFromOSS(originalURL)
	if err != nil {
		return "", fmt.Errorf("下载示例图失败: %w", err)
	}

	img, _, err := image.Decode(bytes.NewReader(imageData))
	if err != nil {
		return "", fmt.Errorf("解析示例图失败: %w", err)
	}

	bounds := img.Bounds()
	drawableImg := image.NewRGBA(bounds)
	draw.Draw(drawableImg, bounds, img, image.Point{}, draw.Src)

	drawableImg = addLogoToImage(drawableImg)
	drawableImg = addTextWatermark(drawableImg, username, account, date)

	var buf bytes.Buffer
	if err := jpeg.Encode(&buf, drawableImg, &jpeg.Options{Quality: 95}); err != nil {
		return "", fmt.Errorf("编码水印示例图失败: %w", err)
	}

	now := time.Now().UTC()
	fileName := fmt.Sprintf("third_scene_examples/%d/%s_%s_%d.jpg",
		now.Year(),
		now.Format("0102"),
		keyPrefix,
		now.UnixNano())

	url, err := uploadImageToOSS(buf.Bytes(), fileName)
	if err != nil {
		return "", fmt.Errorf("上传水印示例图失败: %w", err)
	}

	return url, nil
}