refactor: extract models/routes and env-based server config

- Move API request/response structs into new lib/models package
- Centralize Gin route registration in lib/routing to simplify wiring
- Add lib/server config helper to allow WARPBOX_BOX_POLL_INTERVAL_MS override
- Improves modularity and makes polling behavior configurable per environmentrefactor: extract models/routes and env-based server config

- Move API request/response structs into new lib/models package
- Centralize Gin route registration in lib/routing to simplify wiring
- Add lib/server config helper to allow WARPBOX_BOX_POLL_INTERVAL_MS override
- Improves modularity and makes polling behavior configurable per environment

lib/server/presentation.go

@@ -0,0 +1,111 @@
+package server
+
+import (
+	"fmt"
+	"io"
+	"mime"
+	"net/http"
+	"net/url"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"warpbox/lib/models"
+)
+
+func decorateBoxFile(boxID string, file models.BoxFile) models.BoxFile {
+	if file.MimeType == "" {
+		file.MimeType = mimeTypeForFile(filepath.Join(boxPath(boxID), file.Name), file.Name)
+	}
+
+	if file.SizeLabel == "" {
+		file.SizeLabel = formatBytes(file.Size)
+	}
+
+	file.IconPath = iconForMimeType(file.MimeType, file.Name)
+	file.DownloadPath = "/box/" + boxID + "/files/" + url.PathEscape(file.Name)
+	file.UploadPath = "/box/" + boxID + "/files/" + url.PathEscape(file.ID) + "/upload"
+	file.IsComplete = file.Status == fileStatusReady
+
+	switch file.Status {
+	case fileStatusReady:
+		file.StatusLabel = "Ready"
+		file.Title = "Download " + file.Name
+	case fileStatusFailed:
+		file.StatusLabel = "Failed"
+		file.Title = "Failed to upload"
+	case fileStatusWork:
+		file.StatusLabel = "Loading"
+		file.Title = "Loading"
+	default:
+		file.Status = fileStatusWait
+		file.StatusLabel = "Waiting"
+		file.Title = "Loading"
+	}
+
+	return file
+}
+
+func mimeTypeForFile(path string, filename string) string {
+	if mimeType := mime.TypeByExtension(strings.ToLower(filepath.Ext(filename))); mimeType != "" {
+		return mimeType
+	}
+
+	file, err := os.Open(path)
+	if err != nil {
+		return "application/octet-stream"
+	}
+	defer file.Close()
+
+	buffer := make([]byte, 512)
+	bytesRead, err := file.Read(buffer)
+	if err != nil && err != io.EOF {
+		return "application/octet-stream"
+	}
+
+	return http.DetectContentType(buffer[:bytesRead])
+}
+
+func iconForMimeType(mimeType string, filename string) string {
+	extension := strings.ToLower(filepath.Ext(filename))
+
+	switch {
+	case extension == ".exe":
+		return "/static/img/icons/Program Files Icons - PNG/MSONSEXT.DLL_14_6-0.png"
+	case strings.HasPrefix(mimeType, "image/"):
+		return "/static/img/sprites/bitmap.png"
+	case strings.HasPrefix(mimeType, "video/"):
+		return "/static/img/icons/netshow_notransm-1.png"
+	case strings.HasPrefix(mimeType, "audio/"):
+		return "/static/img/icons/netshow_notransm-1.png"
+	case strings.HasPrefix(mimeType, "text/") || extension == ".md":
+		return "/static/img/sprites/notepad_file-1.png"
+	case strings.Contains(mimeType, "zip") || strings.Contains(mimeType, "compressed") || extension == ".rar" || extension == ".7z" || extension == ".tar" || extension == ".gz":
+		return "/static/img/icons/Windows Icons - PNG/zipfldr.dll_14_101-0.png"
+	case extension == ".ttf" || extension == ".otf" || extension == ".woff" || extension == ".woff2":
+		return "/static/img/sprites/font.png"
+	case extension == ".pdf":
+		return "/static/img/sprites/journal.png"
+	case extension == ".html" || extension == ".css" || extension == ".js":
+		return "/static/img/sprites/frame_web-0.png"
+	default:
+		return "/static/img/icons/Windows Icons - PNG/ole2.dll_14_DEFICON.png"
+	}
+}
+
+func formatBytes(bytes int64) string {
+	units := []string{"B", "KB", "MB", "GB"}
+	size := float64(bytes)
+	unitIndex := 0
+
+	for size >= 1024 && unitIndex < len(units)-1 {
+		size /= 1024
+		unitIndex++
+	}
+
+	if unitIndex == 0 {
+		return fmt.Sprintf("%d %s", bytes, units[unitIndex])
+	}
+
+	return fmt.Sprintf("%.1f %s", size, units[unitIndex])
+}