Add archive preview and new storage categories

backend/handlers/archives.go

@@ -1,6 +1,7 @@
 package handlers
 
 import (
+	"archive/zip"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -9,6 +10,7 @@ import (
 	"git.elijahkuntz.com/Elijah/drive/config"
 	"git.elijahkuntz.com/Elijah/drive/database"
 	"git.elijahkuntz.com/Elijah/drive/workers"
+	"github.com/bodgit/sevenzip"
 	"github.com/gofiber/fiber/v2"
 )
 
@@ -130,4 +132,66 @@ func (h *ArchiveHandler) syncArchiveToDB(relPath string) {
 	`, cleanPath, filepath.Base(cleanPath), info.Size(), info.IsDir())
 }
 
+type ArchiveContentItem struct {
+	Name string `json:"name"`
+	Size uint64 `json:"size"`
+	Path string `json:"path"`
+}
+
+// GetArchiveContents lists files within a zip or 7z archive without extracting.
+// GET /api/files/archive-contents
+func (h *ArchiveHandler) GetArchiveContents(c *fiber.Ctx) error {
+	relPath := c.Query("path")
+	if relPath == "" {
+		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "path is required"})
+	}
+
+	fullPath, err := resolveSafe(h.Config.StorageDir, relPath)
+	if err != nil {
+		return c.Status(fiber.StatusForbidden).JSON(fiber.Map{"error": err.Error()})
+	}
+
+	ext := strings.ToLower(filepath.Ext(fullPath))
+	var items []ArchiveContentItem
+
+	if ext == ".zip" {
+		r, err := zip.OpenReader(fullPath)
+		if err != nil {
+			return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": "failed to open zip file"})
+		}
+		defer r.Close()
+
+		for _, f := range r.File {
+			if f.FileInfo().IsDir() {
+				continue
+			}
+			items = append(items, ArchiveContentItem{
+				Name: f.FileInfo().Name(),
+				Size: f.UncompressedSize64,
+				Path: f.Name,
+			})
+		}
+	} else if ext == ".7z" {
+		r, err := sevenzip.OpenReader(fullPath)
+		if err != nil {
+			return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": "failed to open 7z file"})
+		}
+		defer r.Close()
+
+		for _, f := range r.File {
+			if f.FileInfo().IsDir() {
+				continue
+			}
+			items = append(items, ArchiveContentItem{
+				Name: f.FileInfo().Name(),
+				Size: f.UncompressedSize,
+				Path: f.Name,
+			})
+		}
+	} else {
+		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "unsupported archive type"})
+	}
+
+	return c.JSON(fiber.Map{"items": items})
+}