refactor(Post, PostMapper, PostRepository, CreatePostScreen, HomeScreen): update communityId to channelId for improved clarity

- Renamed communityId to channelId across Post entity, PostMapper, and PostRepository for consistency and clarity.
- Updated CreatePostScreen to include channel selection functionality, enhancing user experience when creating posts.
- Adjusted HomeScreen to support filtering posts by channel, improving content organization.
- Refactored related interfaces and services to align with the new channelId terminology, ensuring a cohesive codebase.

src/data/mappers/PostMapper.ts

@@ -24,7 +24,7 @@ export class PostMapper {
       isFavorited: response.is_favorited || false,
       isTop: response.is_pinned || false,
       status: (response.status || 'published') as 'published' | 'draft' | 'deleted',
-      communityId: response.community_id,
+      channelId: response.channel_id,
       tags: [],
       createdAt: new Date(response.created_at || Date.now()),
       // 空字符串/缺省时用 created_at，避免误用 Date.now() 导致全部显示「刚修改」
@@ -58,8 +58,8 @@ export class PostMapper {
     if (model.images !== undefined) {
       request.images = model.images;
     }
-    if (model.communityId !== undefined) {
-      request.community_id = model.communityId;
+    if (model.channelId !== undefined) {
+      request.channel_id = model.channelId;
     }
     if (model.tags !== undefined) {
       request.tags = model.tags;
@@ -75,7 +75,7 @@ export class PostMapper {
     title: string,
     content: string,
     images?: string[],
-    communityId?: string
+    channelId?: string
   ): Record<string, any> {
     const request: Record<string, any> = {
       title,
@@ -84,8 +84,8 @@ export class PostMapper {
     if (images && images.length > 0) {
       request.images = images;
     }
-    if (communityId) {
-      request.community_id = communityId;
+    if (channelId) {
+      request.channel_id = channelId;
     }
     return request;
   }

src/data/models/index.ts

@@ -85,7 +85,7 @@ export interface PostModel {
   isFavorited: boolean;
   isTop: boolean;
   status: 'published' | 'draft' | 'deleted';
-  communityId?: string;
+  channelId?: string;
   tags?: string[];
   createdAt: Date;
   updatedAt: Date;

src/data/repositories/PostRepository.ts

@@ -37,7 +37,7 @@ interface PostApiResponse {
   is_favorited: boolean;
   is_pinned: boolean;
   status: string;
-  community_id?: string;
+  channel_id?: string;
   tags?: string[];
   created_at: string;
   updated_at: string;
@@ -124,7 +124,7 @@ export class PostRepository implements IPostRepository {
       isFavorited: model.isFavorited,
       isPinned: model.isTop,
       status: model.status,
-      communityId: model.communityId,
+      channelId: model.channelId,
       tags: model.tags || [],
       createdAt: model.createdAt.toISOString(),
       updatedAt: model.updatedAt.toISOString(),
@@ -143,7 +143,7 @@ export class PostRepository implements IPostRepository {
       created_at: model.createdAt.toISOString(),
       updated_at: model.updatedAt.toISOString(),
       content_edited_at: response.content_edited_at,
-      community_id: model.communityId,
+      channel_id: model.channelId,
     };
   }
 
@@ -250,7 +250,7 @@ export class PostRepository implements IPostRepository {
         queryParams.cursor = params.cursor;
       }
       if (params?.post_type) queryParams.tab = params.post_type;
-      if (params?.communityId) queryParams.community_id = params.communityId;
+      if (params?.channelId) queryParams.channel_id = params.channelId;
       if (params?.authorId) queryParams.author_id = params.authorId;
       if (params?.tags && params.tags.length > 0) queryParams.tags = params.tags.join(',');
       if (params?.status) queryParams.status = params.status;
@@ -364,7 +364,7 @@ export class PostRepository implements IPostRepository {
       if (params.page) queryParams.page = params.page;
       if (params.pageSize) queryParams.page_size = params.pageSize;
       if (params.scope) queryParams.scope = params.scope;
-      if (params.communityId) queryParams.community_id = params.communityId;
+      if (params.channelId) queryParams.channel_id = params.channelId;
 
       const response = await this.api.get<PostsListApiResponse>('/posts/search', queryParams);
 
@@ -398,7 +398,7 @@ export class PostRepository implements IPostRepository {
         data.title,
         data.content,
         data.images?.map(img => img.url),
-        data.communityId
+        data.channelId
       );
 
       if (data.tags && data.tags.length > 0) {

src/data/repositories/interfaces/IPostRepository.ts

@@ -19,8 +19,8 @@ export interface GetPostsParams {
   cursor?: string;
   /** 帖子类型筛选（可选）：follow, hot, latest */
   post_type?: 'follow' | 'hot' | 'latest';
-  /** 社区ID过滤 */
-  communityId?: string;
+  /** 频道ID过滤 */
+  channelId?: string;
   /** 作者ID过滤 */
   authorId?: string;
   /** 标签过滤 */
@@ -45,8 +45,8 @@ export interface CreatePostData {
   content: string;
   /** 图片列表 */
   images?: PostImage[];
-  /** 所属社区ID */
-  communityId?: string;
+  /** 所属频道ID */
+  channelId?: string;
   /** 标签列表 */
   tags?: string[];
   /** 帖子状态 */
@@ -97,8 +97,8 @@ export interface SearchPostsParams {
   pageSize?: number;
   /** 搜索范围：标题、内容、或全部 */
   scope?: 'title' | 'content' | 'all';
-  /** 社区ID过滤 */
-  communityId?: string;
+  /** 频道ID过滤 */
+  channelId?: string;
 }
 
 // ==================== Repository 接口 ====================