import { NextRequest, NextResponse } from "next/server"
import { getServerSession } from "next-auth"
import { authOptions } from "@/lib/auth"
import { prisma } from "@/lib/prisma"
import { checkPermission } from "@/lib/permissions"
import { Role } from "@prisma/client"

// 获取单个成员
export async function GET(
  req: NextRequest,
  { params }: { params: Promise<{ treeId: string; memberId: string }> }
) {
  try {
    const session = await getServerSession(authOptions)
    
    if (!session?.user?.id) {
      return NextResponse.json({ error: "未授权" }, { status: 401 })
    }

    const { treeId, memberId } = await params

    // 检查权限
    const { hasPermission } = await checkPermission(session.user.id, treeId)
    if (!hasPermission) {
      return NextResponse.json({ error: "无权访问此家族树" }, { status: 403 })
    }

    const member = await prisma.familyMember.findFirst({
      where: {
        id: memberId,
        treeId,
      }
    })

    if (!member) {
      return NextResponse.json({ error: "成员不存在" }, { status: 404 })
    }

    return NextResponse.json({ member })
  } catch (error) {
    console.error("获取成员失败:", error)
    return NextResponse.json(
      { error: "获取成员失败" },
      { status: 500 }
    )
  }
}

// 更新成员
export async function PATCH(
  req: NextRequest,
  { params }: { params: Promise<{ treeId: string; memberId: string }> }
) {
  try {
    const session = await getServerSession(authOptions)
    
    if (!session?.user?.id) {
      return NextResponse.json({ error: "未授权" }, { status: 401 })
    }

    const { treeId, memberId } = await params

    // 检查权限（需要 EDITOR 权限）
    const { hasPermission } = await checkPermission(session.user.id, treeId, Role.EDITOR)
    if (!hasPermission) {
      return NextResponse.json({ error: "无权限修改成员" }, { status: 403 })
    }

    const body = await req.json()

    // 检查成员是否存在
    const existingMember = await prisma.familyMember.findFirst({
      where: {
        id: memberId,
        treeId,
      }
    })

    if (!existingMember) {
      return NextResponse.json({ error: "成员不存在" }, { status: 404 })
    }

    const member = await prisma.familyMember.update({
      where: { id: memberId },
      data: {
        ...body,
        updatedAt: new Date(),
      }
    })

    // 记录操作日志
    await prisma.activityLog.create({
      data: {
        treeId,
        userId: session.user.id,
        action: 'UPDATE',
        entityType: 'MEMBER',
        entityId: member.id,
        entityName: member.fullName,
        changes: body,
      }
    })

    return NextResponse.json({ member })
  } catch (error) {
    console.error("更新成员失败:", error)
    return NextResponse.json(
      { error: "更新成员失败" },
      { status: 500 }
    )
  }
}

// 删除成员
export async function DELETE(
  req: NextRequest,
  { params }: { params: Promise<{ treeId: string; memberId: string }> }
) {
  try {
    const session = await getServerSession(authOptions)
    
    if (!session?.user?.id) {
      return NextResponse.json({ error: "未授权" }, { status: 401 })
    }

    const { treeId, memberId } = await params

    // 检查权限（需要 EDITOR 权限）
    const { hasPermission } = await checkPermission(session.user.id, treeId, Role.EDITOR)
    if (!hasPermission) {
      return NextResponse.json({ error: "无权限删除成员" }, { status: 403 })
    }

    // 检查成员是否存在
    const existingMember = await prisma.familyMember.findFirst({
      where: {
        id: memberId,
        treeId,
      }
    })

    if (!existingMember) {
      return NextResponse.json({ error: "成员不存在" }, { status: 404 })
    }

    await prisma.familyMember.delete({
      where: { id: memberId }
    })

    // 记录操作日志
    await prisma.activityLog.create({
      data: {
        treeId,
        userId: session.user.id,
        action: 'DELETE',
        entityType: 'MEMBER',
        entityId: memberId,
        entityName: existingMember.fullName,
      }
    })

    return NextResponse.json({ success: true })
  } catch (error) {
    console.error("删除成员失败:", error)
    return NextResponse.json(
      { error: "删除成员失败" },
      { status: 500 }
    )
  }
}