Social_Network/Member.cpp at master · Kineruth/Social_Network · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
#include "Member.h"
#include <iterator>

unsigned int Member::ACTIVE_MEMBERS = 0;
unsigned int Member::COUNTER_ID = 1;

Member::Member(){
    this->following = 0;
    this->followers = 0;
    this->id = COUNTER_ID;
    COUNTER_ID++;
    ACTIVE_MEMBERS++;
}

void Member::follow(Member& m)
{
    //checking if "this" tried to follow himself
    if(this->id == m.id)
        return;

    //checking if "this" already follows him
    if(this->following_list.count(m.id) > 0)
        return;

    this->following_list.insert(pair<unsigned int, Member*>(m.id, &m));
    this->following++;

    m.followers_list.insert(pair<unsigned int, Member*>(this->id, this));
    m.followers++;
}

void Member::unfollow(Member& m)
{
    //checking if "this" tried to unfollow himself
    if(this->id == m.id)
        return;

    //checking if "this" does not follow him
    if(this->following_list.count(m.id) == 0)
        return;

    this->following_list.erase(m.id);
    this->following--;

    m.followers_list.erase(this->id);
    m.followers--;
}

unsigned int Member::numFollowing() const
{
        return this->following;
}

unsigned int Member::numFollowers() const
{
    return this->followers;
}

unsigned int Member::count()
{
    return ACTIVE_MEMBERS;
}

Member::~Member()
{
    map<unsigned int, Member*>::iterator itr;
    for(itr = this->followers_list.begin(); itr != this->followers_list.end(); ++itr )
    {
        Member* m = itr->second;
        m->following_list.erase(this->id);
        m->following--;
    }

    for(itr = this->following_list.begin(); itr != this->following_list.end(); ++itr)
    {
        Member* m = itr->second;
        m->followers_list.erase(this->id);
        m->followers--;
    }


    ACTIVE_MEMBERS--;
}