init: 提交 files 服务初始代码

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/models/file_object.go

@@ -0,0 +1,46 @@
+package models
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+type FileStatus string
+
+const (
+	FileStatusPending  FileStatus = "pending"
+	FileStatusReady    FileStatus = "ready"
+	FileStatusDeleting FileStatus = "deleting"
+	FileStatusExpired  FileStatus = "expired"
+)
+
+type FileObject struct {
+	ID               uint           `gorm:"primaryKey" json:"id"`
+	Identity         string         `gorm:"size:64;not null;uniqueIndex" json:"identity"`
+	Namespace        string         `gorm:"size:64;not null" json:"namespace"`
+	Provider         string         `gorm:"size:32;not null" json:"provider"`
+	Bucket           string         `gorm:"size:255;not null" json:"bucket"`
+	ObjectKey        string         `gorm:"size:512;not null;uniqueIndex" json:"object_key"`
+	OriginalName     string         `gorm:"size:255;not null" json:"original_name"`
+	Extension        string         `gorm:"size:32" json:"extension"`
+	ContentType      string         `gorm:"size:255" json:"content_type"`
+	ExpectedSize     int64          `gorm:"not null" json:"expected_size"`
+	ActualSize       int64          `json:"actual_size"`
+	ETag             string         `gorm:"size:255" json:"etag"`
+	Status           FileStatus     `gorm:"size:16;not null;index:idx_files_object_status_expires_at,priority:1;index:idx_files_object_status_delete_lease,priority:1" json:"status"`
+	OwnerType        string         `gorm:"size:64;not null;index:idx_files_object_owner_type_identity,priority:1" json:"owner_type"`
+	OwnerID          uint           `gorm:"not null" json:"owner_id"`
+	OwnerIdentity    string         `gorm:"size:64;not null;index:idx_files_object_owner_type_identity,priority:2" json:"owner_identity"`
+	ExpiresAt        *time.Time     `gorm:"index:idx_files_object_status_expires_at,priority:2" json:"expires_at"`
+	CompletedAt      *time.Time     `json:"completed_at"`
+	DeleteToken      string         `gorm:"size:26" json:"-"`
+	DeleteLeaseUntil *time.Time     `gorm:"index:idx_files_object_status_delete_lease,priority:2" json:"-"`
+	CreatedAt        time.Time      `json:"created_at"`
+	UpdatedAt        time.Time      `json:"updated_at"`
+	DeletedAt        gorm.DeletedAt `gorm:"index" json:"deleted_at,omitempty"`
+}
+
+func (FileObject) TableName() string {
+	return "files_object"
+}