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* Supabase 关注系统服务
*
* 功能：
* - 关注/取消关注用户
* - 获取粉丝列表
* - 获取关注列表
* - 检查关注状态
*/
import { supabase, getCurrentUserId } from '../client';
import { handleSupabaseError, logger, wrapResponse, type SupabaseResponse } from '../helpers';
// ==================== 类型定义 ====================
export interface Follow {
followerId: string;
followingId: string;
createdAt: string;
// 关联的用户信息
followerUsername?: string;
followerAvatar?: string;
followingUsername?: string;
followingAvatar?: string;
}
export interface FollowStats {
followersCount: number;
followingCount: number;
}
// ==================== 关注服务类 ====================
class SupabaseFollowService {
/**
* 关注用户
*/
async followUser(targetUserId: string): Promise<SupabaseResponse<boolean>> {
logger.query('follows', 'follow', { targetUserId });
try {
const currentUserId = await getCurrentUserId();
if (!currentUserId) {
return {
data: null,
error: { message: '请先登录', code: 'AUTH_REQUIRED', details: '', hint: '' } as any,
success: false,
};
}
Iif (currentUserId === targetUserId) {
return {
data: null,
error: { message: '不能关注自己', code: 'SELF_FOLLOW', details: '', hint: '' } as any,
success: false,
};
}
// 检查是否已关注
const { data: existing } = await supabase
.from('follows')
.select('id')
.eq('follower_id', currentUserId)
.eq('following_id', targetUserId)
.maybeSingle();
Eif (existing) {
return { data: true, error: null, success: true };
}
// 创建关注关系
const { error } = await supabase.from('follows').insert({
follower_id: currentUserId,
following_id: targetUserId,
});
if (error) {
handleSupabaseError(error, 'followUser');
return wrapResponse(null, error) as unknown as SupabaseResponse<boolean>;
}
logger.success('follows', 'followUser');
return { data: true, error: null, success: true };
} catch (err) {
logger.error('follows', 'followUser', err);
return {
data: null,
error: { message: String(err), code: 'UNKNOWN', details: '', hint: '' } as any,
success: false,
};
}
}
/**
* 取消关注用户
*/
async unfollowUser(targetUserId: string): Promise<SupabaseResponse<boolean>> {
logger.query('follows', 'unfollow', { targetUserId });
try {
const currentUserId = await getCurrentUserId();
Iif (!currentUserId) {
return {
data: null,
error: { message: '请先登录', code: 'AUTH_REQUIRED', details: '', hint: '' } as any,
success: false,
};
}
const { error } = await supabase
.from('follows')
.delete()
.eq('follower_id', currentUserId)
.eq('following_id', targetUserId);
Iif (error) {
handleSupabaseError(error, 'unfollowUser');
return wrapResponse(null, error) as unknown as SupabaseResponse<boolean>;
}
logger.success('follows', 'unfollowUser');
return { data: true, error: null, success: true };
} catch (err) {
logger.error('follows', 'unfollowUser', err);
return {
data: null,
error: { message: String(err), code: 'UNKNOWN', details: '', hint: '' } as any,
success: false,
};
}
}
/**
* 检查是否已关注某用户
*/
async isFollowing(targetUserId: string): Promise<SupabaseResponse<boolean>> {
logger.query('follows', 'isFollowing', { targetUserId });
try {
const currentUserId = await getCurrentUserId();
Iif (!currentUserId) {
return { data: false, error: null, success: true };
}
const { data, error } = await supabase
.from('follows')
.select('id')
.eq('follower_id', currentUserId)
.eq('following_id', targetUserId)
.maybeSingle();
Iif (error) {
handleSupabaseError(error, 'isFollowing');
return { data: false, error: null, success: true };
}
return { data: !!data, error: null, success: true };
} catch (err) {
logger.error('follows', 'isFollowing', err);
return { data: false, error: null, success: true };
}
}
/**
* 获取用户的粉丝列表
*/
async getFollowers(userId: string): Promise<SupabaseResponse<Follow[]>> {
logger.query('follows', 'getFollowers', { userId });
try {
const { data, error } = await supabase
.from('follows')
.select(
`
follower_id,
following_id,
created_at,
follower:profiles!follows_follower_id_fkey(username, avatar_url)
`
)
.eq('following_id', userId)
.order('created_at', { ascending: false });
Iif (error) {
handleSupabaseError(error, 'getFollowers');
return wrapResponse(null, error) as unknown as SupabaseResponse<Follow[]>;
}
const followers: Follow[] = (data || []).map((item: any) => ({
followerId: item.follower_id,
followingId: item.following_id,
createdAt: item.created_at,
followerUsername: item.follower?.username,
followerAvatar: item.follower?.avatar_url,
}));
return { data: followers, error: null, success: true };
} catch (err) {
logger.error('follows', 'getFollowers', err);
return {
data: null,
error: { message: String(err), code: 'UNKNOWN', details: '', hint: '' } as any,
success: false,
};
}
}
/**
* 获取用户的关注列表
*/
async getFollowing(userId: string): Promise<SupabaseResponse<Follow[]>> {
logger.query('follows', 'getFollowing', { userId });
try {
const { data, error } = await supabase
.from('follows')
.select(
`
follower_id,
following_id,
created_at,
following:profiles!follows_following_id_fkey(username, avatar_url)
`
)
.eq('follower_id', userId)
.order('created_at', { ascending: false });
Iif (error) {
handleSupabaseError(error, 'getFollowing');
return wrapResponse(null, error) as unknown as SupabaseResponse<Follow[]>;
}
const following: Follow[] = (data || []).map((item: any) => ({
followerId: item.follower_id,
followingId: item.following_id,
createdAt: item.created_at,
followingUsername: item.following?.username,
followingAvatar: item.following?.avatar_url,
}));
return { data: following, error: null, success: true };
} catch (err) {
logger.error('follows', 'getFollowing', err);
return {
data: null,
error: { message: String(err), code: 'UNKNOWN', details: '', hint: '' } as any,
success: false,
};
}
}
/**
* 获取用户的关注统计
*/
async getFollowStats(userId: string): Promise<SupabaseResponse<FollowStats>> {
logger.query('follows', 'getFollowStats', { userId });
try {
// 获取粉丝数
const { count: followersCount, error: followersError } = await supabase
.from('follows')
.select('*', { count: 'exact', head: true })
.eq('following_id', userId);
if (followersError) {
handleSupabaseError(followersError, 'getFollowStats.followers');
return wrapResponse(null, followersError) as unknown as SupabaseResponse<FollowStats>;
}
// 获取关注数
const { count: followingCount, error: followingError } = await supabase
.from('follows')
.select('*', { count: 'exact', head: true })
.eq('follower_id', userId);
Iif (followingError) {
handleSupabaseError(followingError, 'getFollowStats.following');
return wrapResponse(null, followingError) as unknown as SupabaseResponse<FollowStats>;
}
return {
data: {
followersCount: followersCount || 0,
followingCount: followingCount || 0,
},
error: null,
success: true,
};
} catch (err) {
logger.error('follows', 'getFollowStats', err);
return {
data: null,
error: { message: String(err), code: 'UNKNOWN', details: '', hint: '' } as any,
success: false,
};
}
}
/**
* 切换关注状态
*/
async toggleFollow(targetUserId: string): Promise<SupabaseResponse<{ isFollowing: boolean }>> {
logger.query('follows', 'toggleFollow', { targetUserId });
try {
const isFollowingResponse = await this.isFollowing(targetUserId);
if (isFollowingResponse.data) {
await this.unfollowUser(targetUserId);
return { data: { isFollowing: false }, error: null, success: true };
} else {
await this.followUser(targetUserId);
return { data: { isFollowing: true }, error: null, success: true };
}
} catch (err) {
logger.error('follows', 'toggleFollow', err);
return {
data: null,
error: { message: String(err), code: 'UNKNOWN', details: '', hint: '' } as any,
success: false,
};
}
}
}
export const supabaseFollowService = new SupabaseFollowService();
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