1 package bgammon
2
3 import (
4 "encoding/json"
5 "fmt"
6 )
7
8 const (
9 SpeedSlow int8 = 0
10 SpeedMedium int8 = 1
11 SpeedFast int8 = 2
12 SpeedInstant int8 = 3
13 )
14
15 type Event struct {
16 Type string
17 Player string
18 }
19
20 type EventWelcome struct {
21 Event
22 PlayerName string
23 Clients int
24 Games int
25 }
26
27 type EventHelp struct {
28 Event
29 Topic string
30 Message string
31 }
32
33 type EventPing struct {
34 Event
35 Message string
36 }
37
38 type EventNotice struct {
39 Event
40 Message string
41 }
42
43 type EventSay struct {
44 Event
45 Message string
46 }
47
48 type GameListing struct {
49 ID int
50 Password bool
51 Points int8
52 Players int8
53 Rating int
54 Name string
55 }
56
57 type EventList struct {
58 Event
59 Games []GameListing
60 }
61
62 type EventJoined struct {
63 Event
64 GameID int
65 PlayerNumber int8
66 }
67
68 type EventFailedJoin struct {
69 Event
70 Reason string
71 }
72
73 type EventLeft struct {
74 Event
75 }
76
77 type EventFailedLeave struct {
78 Event
79 Reason string
80 }
81
82 type EventBoard struct {
83 Event
84 GameState
85 }
86
87 type EventRolled struct {
88 Event
89 Roll1 int8
90 Roll2 int8
91 Roll3 int8
92 Selected bool
93 }
94
95 type EventFailedRoll struct {
96 Event
97 Reason string
98 }
99
100 type EventMoved struct {
101 Event
102 Moves [][]int8
103 }
104
105 type EventFailedMove struct {
106 Event
107 From int8
108 To int8
109 Reason string
110 }
111
112 type EventFailedOk struct {
113 Event
114 Reason string
115 }
116
117 type EventWin struct {
118 Event
119 Points int8
120 }
121
122 type EventSettings struct {
123 Event
124 AutoPlay bool
125 Highlight bool
126 Pips bool
127 Moves bool
128 Flip bool
129 Advanced bool
130 Speed int8
131 }
132
133 type EventReplay struct {
134 Event
135 ID int
136 Content []byte
137 }
138
139 type HistoryMatch struct {
140 ID int
141 Timestamp int64
142 Points int8
143 Opponent string
144 Winner int8
145 }
146
147 type EventHistory struct {
148 Event
149 Page int
150 Pages int
151 Matches []*HistoryMatch
152 CasualBackgammonSingle int
153 CasualBackgammonMulti int
154 CasualAceyDeuceySingle int
155 CasualAceyDeuceyMulti int
156 CasualTabulaSingle int
157 CasualTabulaMulti int
158 }
159
160 func DecodeEvent(message []byte) (interface{}, error) {
161 e := &Event{}
162 err := json.Unmarshal(message, e)
163 if err != nil {
164 return nil, err
165 }
166
167 var ev interface{}
168 switch e.Type {
169 case EventTypeWelcome:
170 ev = &EventWelcome{}
171 case EventTypeHelp:
172 ev = &EventHelp{}
173 case EventTypePing:
174 ev = &EventPing{}
175 case EventTypeNotice:
176 ev = &EventNotice{}
177 case EventTypeSay:
178 ev = &EventSay{}
179 case EventTypeList:
180 ev = &EventList{}
181 case EventTypeJoined:
182 ev = &EventJoined{}
183 case EventTypeFailedJoin:
184 ev = &EventFailedJoin{}
185 case EventTypeLeft:
186 ev = &EventLeft{}
187 case EventTypeFailedLeave:
188 ev = &EventFailedLeave{}
189 case EventTypeBoard:
190 ev = &EventBoard{}
191 case EventTypeRolled:
192 ev = &EventRolled{}
193 case EventTypeFailedRoll:
194 ev = &EventFailedRoll{}
195 case EventTypeMoved:
196 ev = &EventMoved{}
197 case EventTypeFailedMove:
198 ev = &EventFailedMove{}
199 case EventTypeFailedOk:
200 ev = &EventFailedOk{}
201 case EventTypeWin:
202 ev = &EventWin{}
203 case EventTypeSettings:
204 ev = &EventSettings{}
205 case EventTypeReplay:
206 ev = &EventReplay{}
207 case EventTypeHistory:
208 ev = &EventHistory{}
209 default:
210 return nil, fmt.Errorf("failed to decode event: unknown event type: %s", e.Type)
211 }
212
213 err = json.Unmarshal(message, ev)
214 if err != nil {
215 return nil, err
216 }
217 return ev, nil
218 }
219
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