Init V4 community edition (#2265)

* Init V4 community edition

* Init V4 community edition

application/migrator/user.go

@@ -0,0 +1,109 @@
+package migrator
+
+import (
+	"context"
+	"fmt"
+	"github.com/cloudreve/Cloudreve/v4/application/migrator/model"
+	"github.com/cloudreve/Cloudreve/v4/ent/user"
+	"github.com/cloudreve/Cloudreve/v4/inventory/types"
+	"github.com/cloudreve/Cloudreve/v4/pkg/conf"
+)
+
+func (m *Migrator) migrateUser() error {
+	m.l.Info("Migrating users...")
+	batchSize := 1000
+	// Start from the saved offset if available
+	offset := m.state.UserOffset
+	ctx := context.Background()
+	if m.state.UserIDs == nil {
+		m.state.UserIDs = make(map[int]bool)
+	}
+
+	// If we're resuming, load existing user IDs
+	if len(m.state.UserIDs) > 0 {
+		m.l.Info("Resuming user migration from offset %d, %d users already migrated", offset, len(m.state.UserIDs))
+	}
+
+	for {
+		m.l.Info("Migrating users with offset %d", offset)
+		var users []model.User
+		if err := model.DB.Limit(batchSize).Offset(offset).Find(&users).Error; err != nil {
+			return fmt.Errorf("failed to list v3 users: %w", err)
+		}
+
+		if len(users) == 0 {
+			if m.dep.ConfigProvider().Database().Type == conf.PostgresDB {
+				m.l.Info("Resetting user ID sequence for postgres...")
+				m.v4client.User.ExecContext(ctx, "SELECT SETVAL('users_id_seq',  (SELECT MAX(id) FROM users))")
+			}
+			break
+		}
+
+		tx, err := m.v4client.Tx(context.Background())
+		if err != nil {
+			_ = tx.Rollback()
+			return fmt.Errorf("failed to start transaction: %w", err)
+		}
+
+		for _, u := range users {
+			userStatus := user.StatusActive
+			switch u.Status {
+			case model.Active:
+				userStatus = user.StatusActive
+			case model.NotActivicated:
+				userStatus = user.StatusInactive
+			case model.Baned:
+				userStatus = user.StatusManualBanned
+			case model.OveruseBaned:
+				userStatus = user.StatusSysBanned
+			}
+
+			setting := &types.UserSetting{
+				VersionRetention:    true,
+				VersionRetentionMax: 10,
+			}
+
+			stm := tx.User.Create().
+				SetRawID(int(u.ID)).
+				SetCreatedAt(formatTime(u.CreatedAt)).
+				SetUpdatedAt(formatTime(u.UpdatedAt)).
+				SetEmail(u.Email).
+				SetNick(u.Nick).
+				SetStatus(userStatus).
+				SetStorage(int64(u.Storage)).
+				SetGroupID(int(u.GroupID)).
+				SetSettings(setting).
+				SetPassword(u.Password)
+
+			if u.TwoFactor != "" {
+				stm.SetTwoFactorSecret(u.TwoFactor)
+			}
+
+			if u.Avatar != "" {
+				stm.SetAvatar(u.Avatar)
+			}
+
+			if _, err := stm.Save(ctx); err != nil {
+				_ = tx.Rollback()
+				return fmt.Errorf("failed to create user %d: %w", u.ID, err)
+			}
+
+			m.state.UserIDs[int(u.ID)] = true
+		}
+
+		if err := tx.Commit(); err != nil {
+			return fmt.Errorf("failed to commit transaction: %w", err)
+		}
+
+		// Update the offset in state and save after each batch
+		offset += batchSize
+		m.state.UserOffset = offset
+		if err := m.saveState(); err != nil {
+			m.l.Warning("Failed to save state after user batch: %s", err)
+		} else {
+			m.l.Info("Saved migration state after processing %d users", offset)
+		}
+	}
+
+	return nil
+}