feat: Add comprehensive timeline editor with frame editing and regeneration capabilities

pixelle_video/services/publishing/__init__.py

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+# Copyright (C) 2025 AIDC-AI
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#     http://www.apache.org/licenses/LICENSE-2.0
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Publishing service for multi-platform video distribution.
+
+Supports:
+- Format conversion + export (Douyin/Kuaishou)
+- API-based upload (Bilibili/YouTube)
+"""
+
+from abc import ABC, abstractmethod
+from dataclasses import dataclass, field
+from enum import Enum
+from typing import Optional, List, Dict, Any
+from datetime import datetime
+
+
+class Platform(Enum):
+    """Supported publishing platforms"""
+    EXPORT = "export"       # Format conversion only
+    DOUYIN = "douyin"       # 抖音 (via export or CDP)
+    KUAISHOU = "kuaishou"   # 快手 (via export or CDP)
+    BILIBILI = "bilibili"   # B站 (API)
+    YOUTUBE = "youtube"     # YouTube (API)
+
+
+class PublishStatus(Enum):
+    """Publishing task status"""
+    PENDING = "pending"
+    CONVERTING = "converting"
+    UPLOADING = "uploading"
+    PROCESSING = "processing"
+    PUBLISHED = "published"
+    FAILED = "failed"
+
+
+@dataclass
+class VideoMetadata:
+    """Video metadata for publishing"""
+    title: str
+    description: str = ""
+    tags: List[str] = field(default_factory=list)
+    category: Optional[str] = None
+    cover_path: Optional[str] = None
+    privacy: str = "public"  # public, private, unlisted
+    
+    # Platform-specific options
+    platform_options: Dict[str, Any] = field(default_factory=dict)
+
+
+@dataclass
+class PublishResult:
+    """Result of a publishing operation"""
+    success: bool
+    platform: Platform
+    status: PublishStatus
+    
+    # On success
+    video_url: Optional[str] = None
+    platform_video_id: Optional[str] = None
+    
+    # On failure
+    error_message: Optional[str] = None
+    
+    # Export result
+    export_path: Optional[str] = None
+    
+    # Timestamps
+    started_at: Optional[datetime] = None
+    completed_at: Optional[datetime] = None
+
+
+@dataclass
+class PublishTask:
+    """A publishing task for background processing"""
+    id: str
+    video_path: str
+    platform: Platform
+    metadata: VideoMetadata
+    status: PublishStatus = PublishStatus.PENDING
+    result: Optional[PublishResult] = None
+    created_at: datetime = field(default_factory=datetime.now)
+    updated_at: Optional[datetime] = None
+
+
+class Publisher(ABC):
+    """Abstract base class for platform publishers"""
+    
+    platform: Platform
+    
+    @abstractmethod
+    async def publish(
+        self,
+        video_path: str,
+        metadata: VideoMetadata,
+        progress_callback: Optional[callable] = None
+    ) -> PublishResult:
+        """
+        Publish a video to the platform.
+        
+        Args:
+            video_path: Path to the video file
+            metadata: Video metadata (title, description, tags, etc.)
+            progress_callback: Optional callback for progress updates
+            
+        Returns:
+            PublishResult with success/failure details
+        """
+        pass
+    
+    @abstractmethod
+    async def validate_credentials(self) -> bool:
+        """Check if platform credentials are valid"""
+        pass
+    
+    def get_platform_requirements(self) -> Dict[str, Any]:
+        """Get platform-specific requirements (dimensions, file size, etc.)"""
+        return {
+            "max_file_size_mb": 128,
+            "max_duration_seconds": 900,  # 15 minutes
+            "supported_formats": ["mp4", "webm"],
+            "recommended_resolution": (1080, 1920),  # Portrait 9:16
+            "recommended_codec": "h264",
+        }