// Copyright © 2023 OpenIM. All rights reserved.
//
// 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.

package friend

import (
	"context"
	"time"

	"github.com/OpenIMSDK/Open-IM-Server/pkg/authverify"

	pbfriend "github.com/OpenIMSDK/protocol/friend"
	"github.com/OpenIMSDK/tools/mcontext"

	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/convert"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/db/table/relation"
)

func (s *friendServer) GetPaginationBlacks(
	ctx context.Context,
	req *pbfriend.GetPaginationBlacksReq,
) (resp *pbfriend.GetPaginationBlacksResp, err error) {
	if err := s.userRpcClient.Access(ctx, req.UserID); err != nil {
		return nil, err
	}
	var pageNumber, showNumber int32
	if req.Pagination != nil {
		pageNumber = req.Pagination.PageNumber
		showNumber = req.Pagination.ShowNumber
	}
	blacks, total, err := s.blackDatabase.FindOwnerBlacks(ctx, req.UserID, pageNumber, showNumber)
	if err != nil {
		return nil, err
	}
	resp = &pbfriend.GetPaginationBlacksResp{}
	resp.Blacks, err = convert.BlackDB2Pb(ctx, blacks, s.userRpcClient.GetUsersInfoMap)
	if err != nil {
		return nil, err
	}
	resp.Total = int32(total)
	return resp, nil
}

func (s *friendServer) IsBlack(ctx context.Context, req *pbfriend.IsBlackReq) (*pbfriend.IsBlackResp, error) {
	in1, in2, err := s.blackDatabase.CheckIn(ctx, req.UserID1, req.UserID2)
	if err != nil {
		return nil, err
	}
	resp := &pbfriend.IsBlackResp{}
	resp.InUser1Blacks = in1
	resp.InUser2Blacks = in2
	return resp, nil
}

func (s *friendServer) RemoveBlack(
	ctx context.Context,
	req *pbfriend.RemoveBlackReq,
) (*pbfriend.RemoveBlackResp, error) {
	if err := s.userRpcClient.Access(ctx, req.OwnerUserID); err != nil {
		return nil, err
	}
	if err := s.blackDatabase.Delete(ctx, []*relation.BlackModel{{OwnerUserID: req.OwnerUserID, BlockUserID: req.BlackUserID}}); err != nil {
		return nil, err
	}
	s.notificationSender.BlackDeletedNotification(ctx, req)
	return &pbfriend.RemoveBlackResp{}, nil
}

func (s *friendServer) AddBlack(ctx context.Context, req *pbfriend.AddBlackReq) (*pbfriend.AddBlackResp, error) {
	if err := authverify.CheckAccessV3(ctx, req.OwnerUserID); err != nil {
		return nil, err
	}
	_, err := s.userRpcClient.GetUsersInfo(ctx, []string{req.OwnerUserID, req.BlackUserID})
	if err != nil {
		return nil, err
	}
	black := relation.BlackModel{
		OwnerUserID:    req.OwnerUserID,
		BlockUserID:    req.BlackUserID,
		OperatorUserID: mcontext.GetOpUserID(ctx),
		CreateTime:     time.Now(),
	}
	if err := s.blackDatabase.Create(ctx, []*relation.BlackModel{&black}); err != nil {
		return nil, err
	}
	s.notificationSender.BlackAddedNotification(ctx, req)
	return &pbfriend.AddBlackResp{}, nil
}