gamegroup2/frontend/src/api/groups.ts

// src/api/groups.ts
import pb from './pocketbase'
import type { Group } from '@/types'

// 创建群组
export async function createGroup(data: {
  name: string
  description: string
  maxMembers: number
}) {
  const user = pb.authStore.model
  if (!user) throw new Error('未登录')

  return pb.collection('groups').create({
    ...data,
    owner: user.id,
    members: [user.id]
  })
}

// 获取用户的群组列表
export async function getUserGroups(): Promise<Group[]> {
  const user = pb.authStore.model
  if (!user) return []

  // 通过 members 字段过滤
  return pb.collection('groups').getList(1, 50, {
    filter: `members ~ "${user.id}"`
  }).then(res => res.items as unknown as Group[])
}

// 获取群组详情
export async function getGroup(groupId: string): Promise<Group> {
  return pb.collection('groups').getOne(groupId, {
    expand: 'members'
  }) as unknown as Group
}

// 加入群组
export async function joinGroup(groupId: string) {
  const user = pb.authStore.model
  if (!user) throw new Error('未登录')

  const group = await pb.collection('groups').getOne(groupId)
  const members = group.members as string[]

  if (members.length >= group.maxMembers) {
    throw new Error('群组已满')
  }

  if (members.includes(user.id)) {
    throw new Error('已是群组成员')
  }

  return pb.collection('groups').update(groupId, {
    members: [...members, user.id]
  })
}

// 退出群组
export async function leaveGroup(groupId: string) {
  const user = pb.authStore.model
  if (!user) throw new Error('未登录')

  const group = await pb.collection('groups').getOne(groupId)

  if (group.owner === user.id) {
    throw new Error('群主不能退出群组，请先转让群主或解散群组')
  }

  const members = group.members as string[]
  return pb.collection('groups').update(groupId, {
    members: members.filter(id => id !== user.id)
  })
}

// 解散群组
export async function dissolveGroup(groupId: string) {
  const user = pb.authStore.model
  if (!user) throw new Error('未登录')

  const group = await pb.collection('groups').getOne(groupId)

  if (group.owner !== user.id) {
    throw new Error('只有群主可以解散群组')
  }

  return pb.collection('groups').delete(groupId)
}

// 订阅群组变更
export function subscribeGroup(groupId: string, callback: (group: Group) => void) {
  return pb.collection('groups').subscribe('*', (payload) => {
    if (payload.record.id === groupId) {
      callback(payload.record as unknown as Group)
    }
  })
}

// 获取群组成员
export async function getGroupMembers(groupId: string) {
  const group = await getGroup(groupId)
  const members = group.members as string[]

  // 批量获取用户信息
  const users = await pb.collection('users').getList(1, 50, {
    filter: members.map(id => `id="${id}"`).join(' || ')
  })

  return users.items
}