1 package bei
2
3 import (
4 "encoding/json"
5 "fmt"
6 )
7
8 const (
9 EventTypeOkBEI = "okbei"
10 EventTypeOkList = "oklist"
11 EventTypeFailSet = "failset"
12 EventTypeOkSet = "okset"
13 EventTypeFailDouble = "faildouble"
14 EventTypeOkDouble = "okdouble"
15 EventTypeFailMove = "failmove"
16 EventTypeOkMove = "okmove"
17 EventTypeFailChoose = "failchoose"
18 EventTypeOkChoose = "okchoose"
19 )
20
21 func EncodeEvent(e interface{}) ([]byte, error) {
22
23 switch ev := e.(type) {
24 case *EventOkBEI:
25 ev.Type = EventTypeOkBEI
26 case *EventOkList:
27 ev.Type = EventTypeOkList
28 case *EventFailSet:
29 ev.Type = EventTypeFailSet
30 case *EventOkSet:
31 ev.Type = EventTypeOkSet
32 case *EventFailDouble:
33 ev.Type = EventTypeFailDouble
34 case *EventOkDouble:
35 ev.Type = EventTypeOkDouble
36 case *EventFailMove:
37 ev.Type = EventTypeFailMove
38 case *EventOkMove:
39 ev.Type = EventTypeOkMove
40 case *EventFailChoose:
41 ev.Type = EventTypeFailChoose
42 case *EventOkChoose:
43 ev.Type = EventTypeOkChoose
44 default:
45 return nil, fmt.Errorf("unknown event type %+v", ev)
46 }
47
48 return json.Marshal(e)
49 }
50
51 func DecodeEvent(message []byte) (interface{}, error) {
52 e := &Event{}
53 err := json.Unmarshal(message, e)
54 if err != nil {
55 return nil, err
56 }
57
58 var ev interface{}
59 switch e.Type {
60 case EventTypeOkBEI:
61 ev = &EventOkBEI{}
62 case EventTypeOkList:
63 ev = &EventOkList{}
64 case EventTypeFailSet:
65 ev = &EventFailSet{}
66 case EventTypeOkSet:
67 ev = &EventOkSet{}
68 case EventTypeFailDouble:
69 ev = &EventFailDouble{}
70 case EventTypeOkDouble:
71 ev = &EventOkDouble{}
72 case EventTypeFailMove:
73 ev = &EventFailMove{}
74 case EventTypeOkMove:
75 ev = &EventOkMove{}
76 case EventTypeFailChoose:
77 ev = &EventFailChoose{}
78 case EventTypeOkChoose:
79 ev = &EventOkChoose{}
80 default:
81 return nil, fmt.Errorf("failed to decode event: unknown event type: %s", e.Type)
82 }
83
84 err = json.Unmarshal(message, ev)
85 if err != nil {
86 return nil, err
87 }
88 return ev, nil
89 }
90
91 type Event struct {
92 Type string
93 }
94
95 type EventOkBEI struct {
96 Event
97 Version int
98 ID map[string]string
99 }
100
101 type SettingType int
102
103 const (
104 SettingBoolean SettingType = iota
105 SettingInteger
106 SettingString
107 )
108
109 type ListEntry struct {
110 Name string
111 Type SettingType
112 Description string
113 Default string
114 Value string
115 Min int
116 Max int
117 }
118
119 type EventOkList struct {
120 Event
121 List []*ListEntry
122 }
123
124 type EventFailSet struct {
125 Event
126 Name string
127 Reason string
128 }
129
130 type EventOkSet struct {
131 Event
132 Name string
133 Value string
134 }
135
136 type EventFailDouble struct {
137 Event
138 Reason string
139 }
140
141 type CubeEvaluation struct {
142 Offer bool
143 Take bool
144 }
145
146 type Probabilities struct {
147 LoseBackgammon float64
148 LoseGammon float64
149 Win float64
150 WinBackgammon float64
151 WinGammon float64
152 }
153
154 type EventOkDouble struct {
155 Event
156 Cube CubeEvaluation
157 Probabilities Probabilities
158 }
159
160 type EventFailMove struct {
161 Event
162 Reason string
163 }
164
165 type Play struct {
166 From int
167 To int
168 }
169
170 type Move struct {
171 Play []*Play
172 Probabilities Probabilities
173 }
174
175 type EventOkMove struct {
176 Event
177 Moves []*Move
178 }
179
180 type EventFailChoose struct {
181 Event
182 Reason string
183 }
184
185 type ChooseRoll struct {
186 Roll int
187 Probabilities Probabilities
188 }
189
190 type EventOkChoose struct {
191 Event
192 Rolls []*ChooseRoll
193 }
194
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