Switch to Fiber cache (closes #63)

.env.example

@@ -3,11 +3,6 @@ PORT=3000
 FIBER_PREFORK=false
 IMGUR_CLIENT_ID=546c25a59c58ad7
 
-# Create IMAGE_CACHE_DIR before enabling image caching
-IMAGE_CACHE=false
-IMAGE_CACHE_DIR=/var/cache/rimgo
-IMAGE_CACHE_CLEANUP_INTERVAL=24h
-
 # Instance privacy
 # For more information, see https://codeberg.org/librarian/librarian/wiki/Instance-privacy
 # Required to be on the instance list.

main.go

@@ -3,10 +3,7 @@ package main
 import (
 	"flag"
 	"fmt"
-	"log"
 	"net/http"
-	"os"
-	"path/filepath"
 	"time"
 
 	"codeberg.org/video-prize-ranch/rimgo/pages"
@@ -15,6 +12,7 @@ import (
 	"codeberg.org/video-prize-ranch/rimgo/views"
 	"github.com/aymerick/raymond"
 	"github.com/gofiber/fiber/v2"
+	"github.com/gofiber/fiber/v2/middleware/cache"
 	"github.com/gofiber/fiber/v2/middleware/filesystem"
 	"github.com/gofiber/fiber/v2/middleware/recover"
 	"github.com/gofiber/template/handlebars"
@@ -29,18 +27,6 @@ func main() {
 	}
 	utils.LoadConfig()
 
-	if utils.Config.ImageCache {
-		go func() {
-			for range time.Tick(utils.Config.CleanupInterval) {
-				log.Println("Cache cleaned")
-				files, _ := filepath.Glob(filepath.Join(utils.Config.CacheDir, "*"))
-				for _, file := range files {
-					os.RemoveAll(file)
-				}
-			}
-		}()
-	}
-
 	engine := handlebars.NewFileSystem(http.FS(views.GetFiles()), ".hbs")
 
 	engine.AddFunc("noteq", func(a interface{}, b interface{}, options *raymond.Options) interface{} {
@@ -86,6 +72,12 @@ func main() {
 		},
 		Root: http.FS(static.GetFiles()),
 	}))
+	app.Use(cache.New(cache.Config{
+		Expiration:           30 * time.Minute,
+		MaxBytes:             25000000,
+		CacheControl:         true,
+		StoreResponseHeaders: true,
+	}))
 
 	app.Get("/robots.txt", func(c *fiber.Ctx) error {
 		file, _ := static.GetFiles().ReadFile("robots.txt")

pages/media.go

@@ -3,7 +3,6 @@ package pages
 import (
 	"crypto/sha256"
 	"encoding/hex"
-	"io"
 	"net/http"
 	"os"
 	"strings"
@@ -83,20 +82,5 @@ func handleMedia(c *fiber.Ctx, url string) error {
 		c.Set("Content-Range", res.Header.Get("Content-Range"))
 	}
 
-	if strings.HasPrefix(res.Header.Get("Content-Type"), "image/") && utils.Config.ImageCache && res.StatusCode == 200 {
-		data, err := io.ReadAll(res.Body)
-		if err != nil {
-			return err
-		}
-
-		err = os.WriteFile(utils.Config.CacheDir + "/" + optionsHash, data, 0644)
-		if err != nil {
-			return err
-		}
-
-		_, err = c.Write(data)
-		return err
-	} else {
 	return c.SendStream(res.Body)
 }
-}