Init V4 community edition (#2265)

* Init V4 community edition

* Init V4 community edition

application/migrator/webdav.go

@@ -0,0 +1,93 @@
+package migrator
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/cloudreve/Cloudreve/v4/application/migrator/model"
+	"github.com/cloudreve/Cloudreve/v4/inventory/types"
+	"github.com/cloudreve/Cloudreve/v4/pkg/boolset"
+	"github.com/cloudreve/Cloudreve/v4/pkg/conf"
+)
+
+func (m *Migrator) migrateWebdav() error {
+	m.l.Info("Migrating webdav accounts...")
+
+	batchSize := 1000
+	offset := m.state.WebdavOffset
+	ctx := context.Background()
+
+	if m.state.WebdavOffset > 0 {
+		m.l.Info("Resuming webdav migration from offset %d", offset)
+	}
+
+	for {
+		m.l.Info("Migrating webdav accounts with offset %d", offset)
+		var webdavAccounts []model.Webdav
+		if err := model.DB.Limit(batchSize).Offset(offset).Find(&webdavAccounts).Error; err != nil {
+			return fmt.Errorf("failed to list v3 webdav accounts: %w", err)
+		}
+
+		if len(webdavAccounts) == 0 {
+			if m.dep.ConfigProvider().Database().Type == conf.PostgresDB {
+				m.l.Info("Resetting webdav account ID sequence for postgres...")
+				m.v4client.DavAccount.ExecContext(ctx, "SELECT SETVAL('dav_accounts_id_seq',  (SELECT MAX(id) FROM dav_accounts))")
+			}
+			break
+		}
+
+		tx, err := m.v4client.Tx(ctx)
+		if err != nil {
+			_ = tx.Rollback()
+			return fmt.Errorf("failed to start transaction: %w", err)
+		}
+
+		for _, webdavAccount := range webdavAccounts {
+			if _, ok := m.state.UserIDs[int(webdavAccount.UserID)]; !ok {
+				m.l.Warning("User %d not found, skipping webdav account %d", webdavAccount.UserID, webdavAccount.ID)
+				continue
+			}
+
+			props := types.DavAccountProps{}
+			options := boolset.BooleanSet{}
+
+			if webdavAccount.Readonly {
+				boolset.Set(int(types.DavAccountReadOnly), true, &options)
+			}
+
+			if webdavAccount.UseProxy {
+				boolset.Set(int(types.DavAccountProxy), true, &options)
+			}
+
+			stm := tx.DavAccount.Create().
+				SetCreatedAt(formatTime(webdavAccount.CreatedAt)).
+				SetUpdatedAt(formatTime(webdavAccount.UpdatedAt)).
+				SetRawID(int(webdavAccount.ID)).
+				SetName(webdavAccount.Name).
+				SetURI("cloudreve://my" + webdavAccount.Root).
+				SetPassword(webdavAccount.Password).
+				SetProps(&props).
+				SetOptions(&options).
+				SetOwnerID(int(webdavAccount.UserID))
+
+			if _, err := stm.Save(ctx); err != nil {
+				_ = tx.Rollback()
+				return fmt.Errorf("failed to create webdav account %d: %w", webdavAccount.ID, err)
+			}
+		}
+
+		if err := tx.Commit(); err != nil {
+			return fmt.Errorf("failed to commit transaction: %w", err)
+		}
+
+		offset += batchSize
+		m.state.WebdavOffset = offset
+		if err := m.saveState(); err != nil {
+			m.l.Warning("Failed to save state after webdav batch: %s", err)
+		} else {
+			m.l.Info("Saved migration state after processing this batch")
+		}
+	}
+
+	return nil
+}