From c02455d509d12355228c551296c26701029df3c0 Mon Sep 17 00:00:00 2001
From: Havoc412 <2993167370@qq.com>
Date: Sun, 20 Oct 2024 11:50:26 +0800
Subject: [PATCH] add resize func

---
 .../controller/web/encounter_controller.go    |  8 +++
 app/service/upload_file/image_file.go         | 51 +++++++++++++++++++
 2 files changed, 59 insertions(+)

diff --git a/app/http/controller/web/encounter_controller.go b/app/http/controller/web/encounter_controller.go
index 944c066..638f1b2 100644
--- a/app/http/controller/web/encounter_controller.go
+++ b/app/http/controller/web/encounter_controller.go
@@ -1,6 +1,9 @@
 package web
 
 import (
+	"catface/app/global/variable"
+	"catface/app/http/validator/core/data_transfer"
+
 	"github.com/gin-gonic/gin"
 )
 
@@ -9,7 +12,12 @@ type Encounters struct {
 
 func (e *Encounters) Create(context *gin.Context) {
 	// TODO 处理 Photos 文件，然后处理出 Avatar，并获取压缩后的 宽高，以及文件的存储路径。
+	photos := data_transfer.GetStringSlice(context, "photos")
+	if len(photos) > 0 {
+		avatar := photos[0]
+		avatarWidth := variable.ConfigYml.GetFloat64("FileUploadSetting.AvatarWidth")
 
+	}
 	// Real Insert
 	// if model.CreateEncounterFactory("").InsertDate(context) {
 	// 	response.Success(context, consts.CurdStatusOkMsg, "")
diff --git a/app/service/upload_file/image_file.go b/app/service/upload_file/image_file.go
index c6ff72d..33cf448 100644
--- a/app/service/upload_file/image_file.go
+++ b/app/service/upload_file/image_file.go
@@ -1 +1,52 @@
 package upload_file
+
+import (
+	"image"
+	"image/jpeg"
+	"os"
+)
+
+// ResizeImage 按照指定宽度等比例缩放图片
+func ResizeImage(srcPath string, dstPath string, targetWidth int) error {
+	// 打开源图片文件
+	srcFile, err := os.Open(srcPath)
+	if err != nil {
+		return err
+	}
+	defer srcFile.Close()
+
+	// 解码源图片
+	srcImg, _, err := image.Decode(srcFile)
+	if err != nil {
+		return err
+	}
+
+	// 获取源图片的尺寸
+	bounds := srcImg.Bounds()
+	srcWidth := bounds.Dx()
+	srcHeight := bounds.Dy()
+
+	// 计算目标高度
+	targetHeight := int(float64(srcHeight) * (float64(targetWidth) / float64(srcWidth)))
+
+	// 创建目标图片
+	dstImg := image.NewRGBA(image.Rect(0, 0, targetWidth, targetHeight))
+
+	// 使用高质量的滤波算法进行缩放
+	draw.CatmullRom.Scale(dstImg, dstImg.Bounds(), srcImg, srcImg.Bounds(), draw.Over, nil)
+
+	// 打开目标图片文件
+	dstFile, err := os.Create(dstPath)
+	if err != nil {
+		return err
+	}
+	defer dstFile.Close()
+
+	// 编码并保存目标图片
+	err = jpeg.Encode(dstFile, dstImg, nil)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}