147 lines
3.6 KiB
Go
147 lines
3.6 KiB
Go
package routers
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import (
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"crypto/md5"
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"encoding/json"
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"fmt"
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"image"
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_ "image/gif"
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_ "image/jpeg"
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_ "image/png"
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"io/ioutil"
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"log"
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"main/configs"
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"main/models"
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"main/utils"
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"net/http"
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"os"
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"github.com/gorilla/mux"
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)
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func ImagesGet(w http.ResponseWriter, r *http.Request) {
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var listview models.ListView
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listview.Page = utils.ParamInt(r.URL.Query().Get("page"), 1)
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listview.PageSize = utils.ParamInt(r.URL.Query().Get("pageSize"), 10)
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var image_list []models.Image
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db := configs.ORMDB()
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db.Offset((listview.Page - 1) * listview.PageSize).Limit(listview.PageSize).Find(&image_list)
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for _, image := range image_list {
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listview.List = append(listview.List, image)
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}
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db.Model(&models.Image{}).Count(&listview.Total)
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listview.Next = listview.Page*listview.PageSize < int(listview.Total)
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listview.WriteJSON(w)
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}
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func ImagesPost(w http.ResponseWriter, r *http.Request) {
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// 接收上傳的圖片文件, 僅限一張
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file, file_header, err := r.FormFile("file")
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if err != nil {
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log.Println(err)
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return
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}
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defer file.Close()
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// 圖片寬高
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imgData, format, err := image.Decode(file)
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if err != nil {
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log.Println(err)
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return
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}
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fmt.Println(format, imgData.Bounds().Dx(), imgData.Bounds().Dy())
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// 將文件指針移回開頭
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if _, err := file.Seek(0, 0); err != nil {
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log.Println(err)
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return
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}
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// 读取文件内容
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content, err := ioutil.ReadAll(file)
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if err != nil {
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log.Println(err)
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return
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}
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// 整理文件信息
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var img models.Image
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img.Name = file_header.Filename
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img.Size = int(file_header.Size) // 數據大小
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img.Hash = fmt.Sprintf("%x", md5.Sum(content)) // 计算哈希
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img.Type = file_header.Header.Get("Content-Type") // 文件類型
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img.Path = fmt.Sprintf("data/images/%s.%s", img.Hash, format) // 存儲路徑
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img.Width = imgData.Bounds().Dx()
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img.Height = imgData.Bounds().Dy()
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img.Format = format
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// 先檢查 data/images 目錄是否存在
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if _, err := ioutil.ReadDir("data/images"); err != nil {
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if err := os.Mkdir("data/images", 0777); err != nil {
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log.Println(err)
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return
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}
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}
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// 將文件存儲到本地 data/images 目錄下
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if err := ioutil.WriteFile(img.Path, content, 0666); err != nil {
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log.Println(err)
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return
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}
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// 存儲圖片信息到數據庫
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if err := configs.ORMDB().Create(&img).Error; err != nil {
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log.Println(err)
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return
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}
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w.Header().Set("Content-Type", "application/json; charset=utf-8")
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w.Write(utils.ToJSON(img))
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}
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func ImagesItemGet(w http.ResponseWriter, r *http.Request) {
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image := models.Image{ID: utils.ParamInt(mux.Vars(r)["id"], 0)}
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if err := configs.ORMDB().First(&image).Error; err != nil {
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log.Println(err)
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return
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}
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w.Header().Set("Content-Type", "application/json; charset=utf-8")
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w.Write(utils.ToJSON(image))
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}
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func ImagesItemPatch(w http.ResponseWriter, r *http.Request) {
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image := models.Image{}
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body, err := ioutil.ReadAll(r.Body)
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if err != nil {
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log.Println(err)
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return
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}
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defer r.Body.Close()
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if err = json.Unmarshal(body, &image); err != nil {
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log.Println(err)
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return
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}
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image.ID = utils.ParamInt(mux.Vars(r)["id"], 0)
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if err := configs.ORMDB().Model(&image).Updates(image).Error; err != nil {
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log.Println(err)
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return
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}
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w.Header().Set("Content-Type", "application/json; charset=utf-8")
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w.Write(utils.ToJSON(image))
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}
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func ImagesItemDelete(w http.ResponseWriter, r *http.Request) {
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image := models.Image{ID: utils.ParamInt(mux.Vars(r)["id"], 0)}
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if err := configs.ORMDB().Delete(&image).Error; err != nil {
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log.Println(err)
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return
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}
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w.Header().Set("Content-Type", "application/json; charset=utf-8")
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w.Write(utils.ToJSON(image))
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}
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