first commit
This commit is contained in:
Beyhan Oğur
362
app/images/handlers/image.go
Normal file
362
app/images/handlers/image.go
Normal file
@@ -0,0 +1,362 @@
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package handlers
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import (
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"crypto/rand"
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"encoding/hex"
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"fmt"
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"io"
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"net/http"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"time"
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imageModels "ginimageApi/app/images/models"
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"ginimageApi/configs"
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imageProcessor "ginimageApi/pkg/images"
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"github.com/gin-gonic/gin"
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"gorm.io/gorm"
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)
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type ProcessImageResponse struct {
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Message string `json:"message"`
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FileName string `json:"file_name"`
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PublicPath string `json:"public_path"`
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URL string `json:"url"`
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MimeType string `json:"mime_type"`
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Size int64 `json:"size"`
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Width int `json:"width"`
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Height int `json:"height"`
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Quality int `json:"quality"`
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Format string `json:"format"`
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}
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type ImageRecordResponse struct {
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ID uint `json:"id"`
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FileName string `json:"file_name"`
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PublicPath string `json:"public_path"`
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URL string `json:"url"`
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MimeType string `json:"mime_type"`
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Size int64 `json:"size"`
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Width int `json:"width"`
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Height int `json:"height"`
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Quality int `json:"quality"`
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Format string `json:"format"`
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Mode string `json:"mode"`
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CreatedAt time.Time `json:"created_at"`
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}
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type ListImagesResponse struct {
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Count int `json:"count"`
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Items []ImageRecordResponse `json:"items"`
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}
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type ImageErrorResponse struct {
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Error string `json:"error"`
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}
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func parseIntForm(c *gin.Context, key string, defaultValue int) (int, error) {
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raw := strings.TrimSpace(c.PostForm(key))
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if raw == "" {
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return defaultValue, nil
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}
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v, err := strconv.Atoi(raw)
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if err != nil {
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return 0, fmt.Errorf("%s sayi olmali", key)
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}
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return v, nil
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}
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func parseBoolForm(c *gin.Context, key string, defaultValue bool) bool {
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raw := strings.TrimSpace(strings.ToLower(c.PostForm(key)))
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if raw == "" {
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return defaultValue
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}
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return raw == "1" || raw == "true" || raw == "yes" || raw == "on"
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}
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func mimeFromFormat(format string) string {
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switch format {
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case "avif":
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return "image/avif"
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case "webp":
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return "image/webp"
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case "png":
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return "image/png"
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default:
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return "image/jpeg"
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}
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}
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func outputDir() string {
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d := strings.TrimSpace(os.Getenv("IMAGE_OUTPUT_DIR"))
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if d == "" {
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return "uploads/processed"
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}
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return d
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}
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func randomSuffix() string {
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b := make([]byte, 4)
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if _, err := rand.Read(b); err != nil {
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return "rand"
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}
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return hex.EncodeToString(b)
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}
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func getUserID(c *gin.Context) (uint, bool) {
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v, ok := c.Get("user_id")
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if !ok {
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return 0, false
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}
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switch t := v.(type) {
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case uint:
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return t, true
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case int:
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if t < 0 {
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return 0, false
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}
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return uint(t), true
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default:
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return 0, false
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}
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}
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func requestBaseURL(c *gin.Context) string {
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if base := strings.TrimSpace(os.Getenv("PUBLIC_BASE_URL")); base != "" {
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return strings.TrimRight(base, "/")
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}
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scheme := "http"
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if c.Request.TLS != nil {
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scheme = "https"
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}
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if proto := strings.TrimSpace(c.GetHeader("X-Forwarded-Proto")); proto != "" {
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scheme = proto
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}
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return fmt.Sprintf("%s://%s", scheme, c.Request.Host)
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}
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func ensureDBAndUser(c *gin.Context) (uint, bool) {
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if configs.DB == nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": "db baglantisi yok"})
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return 0, false
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}
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userID, ok := getUserID(c)
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if !ok {
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c.JSON(http.StatusUnauthorized, gin.H{"error": "kullanici bulunamadi"})
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return 0, false
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}
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return userID, true
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}
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func toImageRecordResponse(c *gin.Context, img imageModels.Image) ImageRecordResponse {
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return ImageRecordResponse{
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ID: img.ID,
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FileName: img.Filename,
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PublicPath: img.PublicPath,
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URL: requestBaseURL(c) + img.PublicPath,
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MimeType: img.MimeType,
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Size: img.Size,
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Width: img.Width,
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Height: img.Height,
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Quality: img.Quality,
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Format: img.Format,
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Mode: img.Mode,
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CreatedAt: img.CreatedAt,
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}
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}
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// ListImages godoc
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// @Summary Giris yapan kullanicinin kayitli resimlerini listeler
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// @Tags images
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// @Produce json
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// @Security BearerAuth
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// @Success 200 {object} ListImagesResponse
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// @Failure 401 {object} ImageErrorResponse
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// @Failure 500 {object} ImageErrorResponse
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// @Router /api/v1/images [get]
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func ListImages(c *gin.Context) {
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userID, ok := ensureDBAndUser(c)
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if !ok {
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return
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}
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var images []imageModels.Image
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if err := configs.DB.Where("user_id = ?", userID).Order("id desc").Find(&images).Error; err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": "resimler listelenemedi"})
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return
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}
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items := make([]ImageRecordResponse, 0, len(images))
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for _, item := range images {
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items = append(items, toImageRecordResponse(c, item))
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}
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c.JSON(http.StatusOK, ListImagesResponse{Count: len(items), Items: items})
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}
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// GetImage godoc
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// @Summary Giris yapan kullanicinin tekil resim kaydini getirir
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// @Tags images
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// @Produce json
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// @Security BearerAuth
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// @Param id path int true "Image ID"
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// @Success 200 {object} ImageRecordResponse
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// @Failure 400 {object} ImageErrorResponse
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// @Failure 401 {object} ImageErrorResponse
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// @Failure 404 {object} ImageErrorResponse
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// @Failure 500 {object} ImageErrorResponse
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// @Router /api/v1/images/{id} [get]
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func GetImage(c *gin.Context) {
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userID, ok := ensureDBAndUser(c)
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if !ok {
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return
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}
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id, err := strconv.ParseUint(c.Param("id"), 10, 64)
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "gecersiz image id"})
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return
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}
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var image imageModels.Image
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err = configs.DB.Where("id = ? AND user_id = ?", uint(id), userID).First(&image).Error
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if err != nil {
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if err == gorm.ErrRecordNotFound {
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c.JSON(http.StatusNotFound, gin.H{"error": "resim bulunamadi"})
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return
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}
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c.JSON(http.StatusInternalServerError, gin.H{"error": "resim getirilemedi"})
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return
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}
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c.JSON(http.StatusOK, toImageRecordResponse(c, image))
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}
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// Process godoc
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// @Summary Resmi en, boy, kalite ve formata gore isler
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// @Tags images
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// @Accept mpfd
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// @Produce json
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// @Security BearerAuth
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// @Param file formData file true "Yuklenecek resim"
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// @Param width formData int false "Hedef genislik (default: orijinal)"
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// @Param height formData int false "Hedef yukseklik (default: orijinal)"
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// @Param quality formData int false "Kalite 1-100 (default: 90)"
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// @Param format formData string false "avif|webp|png|jpg|jpeg (default: avif)"
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// @Param cover formData boolean false "true ise cover crop uygular"
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// @Success 200 {object} ProcessImageResponse
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// @Failure 400 {object} ImageErrorResponse
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// @Failure 401 {object} ImageErrorResponse
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// @Failure 500 {object} ImageErrorResponse
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// @Router /api/v1/images/process [post]
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func Process(c *gin.Context) {
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file, err := c.FormFile("file")
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "file alani zorunlu"})
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return
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}
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width, err := parseIntForm(c, "width", 0)
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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height, err := parseIntForm(c, "height", 0)
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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quality, err := parseIntForm(c, "quality", imageProcessor.DefaultQuality)
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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opts := imageProcessor.ProcessOptions{
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Width: width,
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Height: height,
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Quality: quality,
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Format: c.PostForm("format"),
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Cover: parseBoolForm(c, "cover", false),
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}
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normalized, err := imageProcessor.NormalizeOptions(opts)
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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userID, ok := ensureDBAndUser(c)
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if !ok {
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return
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}
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src, err := file.Open()
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "dosya acilamadi"})
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return
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}
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defer src.Close()
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buffer, err := io.ReadAll(src)
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if err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "dosya okunamadi"})
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return
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}
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processed, err := imageProcessor.ProcessImage(buffer, normalized)
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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if err := os.MkdirAll(outputDir(), 0o755); err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": "output klasoru olusturulamadi"})
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return
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}
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baseName := strings.TrimSuffix(file.Filename, filepath.Ext(file.Filename))
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outName := fmt.Sprintf("%s_%d_%s.%s", baseName, time.Now().Unix(), randomSuffix(), normalized.Format)
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absPath := filepath.Join(outputDir(), outName)
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if err := os.WriteFile(absPath, processed, 0o644); err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": "islenmis dosya kaydedilemedi"})
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return
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}
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processedSize := int64(len(processed))
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imgSize, _ := imageProcessor.GetSize(processed)
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publicPath := "/uploads/processed/" + outName
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url := requestBaseURL(c) + publicPath
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record := imageModels.Image{
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UserID: userID,
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Filename: outName,
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PublicPath: publicPath,
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MimeType: mimeFromFormat(normalized.Format),
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Size: processedSize,
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Width: imgSize.Width,
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Height: imgSize.Height,
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Quality: normalized.Quality,
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Format: normalized.Format,
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Mode: map[bool]string{true: "cover", false: "fit"}[normalized.Cover],
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}
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if err := configs.DB.Create(&record).Error; err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": "db image kaydi olusturulamadi"})
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return
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}
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c.JSON(http.StatusOK, ProcessImageResponse{
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Message: "resim isleme tamamlandi",
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FileName: outName,
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PublicPath: publicPath,
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URL: url,
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MimeType: record.MimeType,
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Size: record.Size,
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Width: record.Width,
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Height: record.Height,
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Quality: record.Quality,
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Format: record.Format,
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})
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}
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