refactor(structure): group platform, infra, and shared packages

Move process wiring, technical adapters, and cross-cutting contracts out of flat internal/ packages so new code has a clear home without changing business layout.

internal/infra/objectstore/webdav.go

@@ -0,0 +1,102 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package objectstore
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net/http"
+	"path"
+	"strings"
+
+	"github.com/Rain-kl/Wavelet/pkg/httppool"
+	"github.com/studio-b12/gowebdav"
+)
+
+type contextTransport struct {
+	ctx    context.Context
+	parent http.RoundTripper
+}
+
+func (t *contextTransport) RoundTrip(req *http.Request) (*http.Response, error) {
+	return t.parent.RoundTrip(req.WithContext(t.ctx))
+}
+
+type webDAVBackend struct {
+	endpoint string
+	username string
+	password string
+	basePath string
+}
+
+func newWebDAVBackend(cfg WebDAVConfig) (*webDAVBackend, error) {
+	return &webDAVBackend{
+		endpoint: strings.TrimRight(cfg.Endpoint, "/"),
+		username: cfg.Username,
+		password: cfg.Password,
+		basePath: strings.Trim(cfg.BasePath, "/"),
+	}, nil
+}
+
+func (b *webDAVBackend) newClient(ctx context.Context) *gowebdav.Client {
+	client := gowebdav.NewClient(b.endpoint, b.username, b.password)
+	client.SetTransport(&contextTransport{
+		ctx:    ctx,
+		parent: httppool.DefaultTransport(),
+	})
+	return client
+}
+
+func (b *webDAVBackend) Put(ctx context.Context, key string, body io.Reader, size int64, _ string) (PutResult, error) {
+	key = b.key(key)
+	client := b.newClient(ctx)
+	if dir := path.Dir(key); dir != "." && dir != "/" {
+		if err := client.MkdirAll(dir, storageDirPerm); err != nil {
+			return PutResult{}, fmt.Errorf("create WebDAV directory: %w", err)
+		}
+	}
+	if err := client.WriteStreamWithLength(key, body, size, storageFilePerm); err != nil {
+		return PutResult{}, fmt.Errorf("put WebDAV object: %w", err)
+	}
+	return PutResult{Key: key}, nil
+}
+
+func (b *webDAVBackend) Get(ctx context.Context, key string) (*Object, error) {
+	key = b.key(key)
+	client := b.newClient(ctx)
+	info, err := client.Stat(key)
+	if err != nil {
+		return nil, fmt.Errorf("stat WebDAV object: %w", err)
+	}
+	body, err := client.ReadStream(key)
+	if err != nil {
+		return nil, fmt.Errorf("get WebDAV object: %w", err)
+	}
+	contentType := defaultContentType
+	if typed, ok := info.(interface{ ContentType() string }); ok && typed.ContentType() != "" {
+		contentType = typed.ContentType()
+	}
+	return &Object{Body: body, ContentLength: info.Size(), ContentType: contentType}, nil
+}
+
+func (b *webDAVBackend) Delete(ctx context.Context, key string) error {
+	client := b.newClient(ctx)
+	if err := client.Remove(b.key(key)); err != nil {
+		return fmt.Errorf("delete WebDAV object: %w", err)
+	}
+	return nil
+}
+
+func (b *webDAVBackend) Test(ctx context.Context) error {
+	client := b.newClient(ctx)
+	if err := client.Connect(); err != nil {
+		return fmt.Errorf("connect WebDAV: %w", err)
+	}
+	return nil
+}
+
+func (b *webDAVBackend) key(key string) string {
+	return "/" + path.Join(b.basePath, strings.TrimLeft(key, "/"))
+}