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image viewer page, improved gallery tiling, thumbnail generation and caching

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This commit is contained in:
wisplite
2025-11-23 21:37:21 -06:00
parent c7d478271d
commit 751a724a4b
10 changed files with 333 additions and 17 deletions
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backend/go.mod
+3
View File
@@ -8,6 +8,7 @@ require (
github.com/bytedance/sonic/loader v0.2.4 // indirect
github.com/cloudwego/base64x v0.1.5 // indirect
github.com/cloudwego/iasm v0.2.0 // indirect
github.com/disintegration/imaging v1.6.2 // indirect
github.com/dustin/go-humanize v1.0.1 // indirect
github.com/gabriel-vasile/mimetype v1.4.9 // indirect
github.com/gin-contrib/cors v1.7.6 // indirect
@@ -32,10 +33,12 @@ require (
github.com/modern-go/reflect2 v1.0.2 // indirect
github.com/pelletier/go-toml/v2 v2.2.4 // indirect
github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
github.com/rwcarlsen/goexif v0.0.0-20190401172101-9e8deecbddbd // indirect
github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
github.com/ugorji/go/codec v1.3.0 // indirect
golang.org/x/arch v0.18.0 // indirect
golang.org/x/crypto v0.39.0 // indirect
golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8 // indirect
golang.org/x/net v0.41.0 // indirect
golang.org/x/sys v0.33.0 // indirect
golang.org/x/text v0.26.0 // indirect
backend/go.sum
+7
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@@ -16,6 +16,8 @@ github.com/cloudwego/iasm v0.2.0 h1:1KNIy1I1H9hNNFEEH3DVnI4UujN+1zjpuk6gwHLTssg=
github.com/cloudwego/iasm v0.2.0/go.mod h1:8rXZaNYT2n95jn+zTI1sDr+IgcD2GVs0nlbbQPiEFhY=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/disintegration/imaging v1.6.2 h1:w1LecBlG2Lnp8B3jk5zSuNqd7b4DXhcjwek1ei82L+c=
github.com/disintegration/imaging v1.6.2/go.mod h1:44/5580QXChDfwIclfc/PCwrr44amcmDAg8hxG0Ewe4=
github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
github.com/gabriel-vasile/mimetype v1.4.3 h1:in2uUcidCuFcDKtdcBxlR0rJ1+fsokWf+uqxgUFjbI0=
@@ -85,6 +87,8 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
github.com/remyoudompheng/bigfft v0.0.0-20200410134404-eec4a21b6bb0/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
github.com/rwcarlsen/goexif v0.0.0-20190401172101-9e8deecbddbd h1:CmH9+J6ZSsIjUK3dcGsnCnO41eRBOnY12zwkn5qVwgc=
github.com/rwcarlsen/goexif v0.0.0-20190401172101-9e8deecbddbd/go.mod h1:hPqNNc0+uJM6H+SuU8sEs5K5IQeKccPqeSjfgcKGgPk=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
@@ -111,6 +115,8 @@ golang.org/x/crypto v0.23.0 h1:dIJU/v2J8Mdglj/8rJ6UUOM3Zc9zLZxVZwwxMooUSAI=
golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
golang.org/x/crypto v0.39.0 h1:SHs+kF4LP+f+p14esP5jAoDpHU8Gu/v9lFRK6IT5imM=
golang.org/x/crypto v0.39.0/go.mod h1:L+Xg3Wf6HoL4Bn4238Z6ft6KfEpN0tJGo53AAPC632U=
golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8 h1:hVwzHzIUGRjiF7EcUjqNxk3NCfkPxbDKRdnNE1Rpg0U=
golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
golang.org/x/net v0.25.0 h1:d/OCCoBEUq33pjydKrGQhw7IlUPI2Oylr+8qLx49kac=
golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
golang.org/x/net v0.41.0 h1:vBTly1HeNPEn3wtREYfy4GZ/NECgw2Cnl+nK6Nz3uvw=
@@ -121,6 +127,7 @@ golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/sys v0.33.0 h1:q3i8TbbEz+JRD9ywIRlyRAQbM0qF7hu24q3teo2hbuw=
golang.org/x/sys v0.33.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.15.0 h1:h1V/4gjBv8v9cjcR6+AR5+/cIYK5N/WAgiv4xlsEtAk=
golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
golang.org/x/text v0.20.0 h1:gK/Kv2otX8gz+wn7Rmb3vT96ZwuoxnQlY+HlJVj7Qug=
backend/internal/routes/media.go
+50
View File
@@ -4,6 +4,7 @@ import (
"net/http"
"os"
"path/filepath"
"strconv"
"github.com/gin-gonic/gin"
"github.com/wisplite/raster/internal/services"
@@ -103,4 +104,53 @@ func RegisterMediaRoutes(rg *gin.RouterGroup) {
}
c.File(mediaData.Path)
})
media.GET("/thumb/:albumId/:mediaId", func(c *gin.Context) {
albumID := c.Param("albumId")
mediaID := c.Param("mediaId")
widthStr := c.Query("width")
heightStr := c.Query("height")
width, _ := strconv.Atoi(widthStr)
height, _ := strconv.Atoi(heightStr)
if albumID == "root" {
albumID = ""
}
isPublic, err := services.IsAlbumPublic(albumID)
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
return
}
allowed := false
if isPublic {
allowed = true
} else {
accessToken := c.GetHeader("Authorization")
userID, err := services.ValidateAccessToken(accessToken)
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
return
}
accessLevel, err := services.CheckUserAlbumAccess(userID, albumID)
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
return
}
if accessLevel >= 0 {
allowed = true
} else {
c.JSON(http.StatusForbidden, gin.H{"error": "user does not have permission to view media in this album"})
return
}
}
if allowed {
thumbPath, err := services.GetThumbnail(albumID, mediaID, width, height)
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
return
}
c.File(thumbPath)
}
})
}
backend/internal/services/media.go
+106 -12
View File
@@ -7,8 +7,12 @@ import (
_ "image/jpeg"
_ "image/png"
"mime/multipart"
"os"
"path/filepath"
"github.com/disintegration/imaging"
"github.com/google/uuid"
"github.com/rwcarlsen/goexif/exif"
"github.com/wisplite/raster/internal/db"
"github.com/wisplite/raster/internal/models"
"gorm.io/datatypes"
@@ -31,30 +35,54 @@ func UploadMedia(file *multipart.FileHeader, albumID string, accessToken string)
albumPath = "root"
}
// Extract metadata (dimensions)
// Extract metadata (dimensions and file info)
var meta datatypes.JSON
metadataMap := map[string]interface{}{
"originalFilename": file.Filename,
"fileSize": file.Size,
"contentType": file.Header.Get("Content-Type"),
}
src, err := file.Open()
if err == nil {
defer src.Close()
cfg, _, err := image.DecodeConfig(src)
cfg, format, err := image.DecodeConfig(src)
if err == nil {
m := map[string]int{
"width": cfg.Width,
"height": cfg.Height,
metadataMap["width"] = cfg.Width
metadataMap["height"] = cfg.Height
metadataMap["format"] = format
// Check for EXIF orientation
src.Seek(0, 0)
x, err := exif.Decode(src)
if err == nil {
orient, err := x.Get(exif.Orientation)
if err == nil {
val, err := orient.Int(0)
if err == nil {
if val >= 5 && val <= 8 {
metadataMap["width"] = cfg.Height
metadataMap["height"] = cfg.Width
}
}
}
}
b, _ := json.Marshal(m)
meta = datatypes.JSON(b)
}
}
b, _ := json.Marshal(metadataMap)
meta = datatypes.JSON(b)
mediaID := uuid.New().String()
mediaPath := fmt.Sprintf("media/%s/%s.%s", albumPath, mediaID, file.Filename)
media := models.Media{
ID: mediaID,
AlbumID: albumID,
Path: mediaPath,
Type: file.Header.Get("Content-Type"),
Metadata: meta,
ID: mediaID,
AlbumID: albumID,
Path: mediaPath,
Type: file.Header.Get("Content-Type"),
Title: file.Filename,
Description: "",
Metadata: meta,
}
result := db.GetDB().Create(&media)
if result.Error != nil {
@@ -100,3 +128,69 @@ func GetMedia(albumID string, mediaID string) (models.Media, error) {
}
return media, nil
}
func GetThumbnail(albumID string, mediaID string, width int, height int) (string, error) {
media, err := GetMedia(albumID, mediaID)
if err != nil {
return "", err
}
if width == 0 {
width = 200
}
if height == 0 {
height = 200
}
cacheDir := "cache/thumbnails"
if err := os.MkdirAll(cacheDir, 0755); err != nil {
return "", err
}
ext := filepath.Ext(media.Path)
if ext == "" {
ext = ".jpg"
}
thumbName := fmt.Sprintf("%s_%dx%d%s", mediaID, width, height, ext)
thumbPath := filepath.Join(cacheDir, thumbName)
if _, err := os.Stat(thumbPath); err == nil {
return thumbPath, nil
}
srcImage, err := imaging.Open(media.Path)
if err != nil {
return "", err
}
f, err := os.Open(media.Path)
if err == nil {
x, err := exif.Decode(f)
f.Close()
if err == nil {
orient, err := x.Get(exif.Orientation)
if err == nil {
val, err := orient.Int(0)
if err == nil {
switch val {
case 3:
srcImage = imaging.Rotate180(srcImage)
case 6:
srcImage = imaging.Rotate270(srcImage)
case 8:
srcImage = imaging.Rotate90(srcImage)
}
}
}
}
}
dstImage := imaging.Fill(srcImage, width, height, imaging.Center, imaging.Lanczos)
err = imaging.Save(dstImage, thumbPath)
if err != nil {
return "", err
}
return thumbPath, nil
}