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967a2686 BA |
1 | // Game object: { |
2 | // // Static informations: | |
3 | // gameId: string | |
4 | // vname: string, | |
5 | // fenStart: string, | |
6 | // players: array of sid+id+name, | |
7 | // timeControl: string, | |
8 | // increment: integer (seconds), | |
9 | // mode: string ("live" or "corr") | |
10 | // imported: boolean (optional, default false) | |
11 | // // Game (dynamic) state: | |
12 | // fen: string, | |
13 | // moves: array of Move objects, | |
14 | // clocks: array of integers, | |
809ba2aa | 15 | // initime: array of integers (when clock start running), |
967a2686 BA |
16 | // score: string (several options; '*' == running), |
17 | // } | |
18 | ||
fd7aea36 BA |
19 | import { ajax } from "@/utils/ajax"; |
20 | ||
967a2686 BA |
21 | function dbOperation(callback) |
22 | { | |
23 | let db = null; | |
24 | let DBOpenRequest = window.indexedDB.open("vchess", 4); | |
25 | ||
26 | DBOpenRequest.onerror = function(event) { | |
27 | alert("Database error: " + event.target.errorCode); | |
28 | }; | |
29 | ||
30 | DBOpenRequest.onsuccess = function(event) { | |
31 | db = DBOpenRequest.result; | |
32 | callback(db); | |
33 | db.close(); | |
34 | }; | |
35 | ||
36 | DBOpenRequest.onupgradeneeded = function(event) { | |
37 | let db = event.target.result; | |
38 | db.onerror = function(event) { | |
39 | alert("Error while loading database: " + event.target.errorCode); | |
40 | }; | |
41 | // Create objectStore for vchess->games | |
42c15a75 BA |
42 | let objectStore = db.createObjectStore("games", { keyPath: "gameId" }); |
43 | objectStore.createIndex("score", "score"); //to search by game result | |
967a2686 BA |
44 | } |
45 | } | |
46 | ||
47 | export const GameStorage = | |
48 | { | |
49 | // Optional callback to get error status | |
50 | add: function(game, callback) | |
51 | { | |
52 | dbOperation((db) => { | |
53 | let transaction = db.transaction("games", "readwrite"); | |
54 | if (callback) | |
55 | { | |
56 | transaction.oncomplete = function() { | |
57 | callback({}); //everything's fine | |
58 | } | |
59 | transaction.onerror = function() { | |
60 | callback({errmsg: "addGame failed: " + transaction.error}); | |
61 | }; | |
62 | } | |
63 | let objectStore = transaction.objectStore("games"); | |
64 | objectStore.add(game); | |
65 | }); | |
66 | }, | |
67 | ||
68 | // TODO: also option to takeback a move ? | |
69 | // NOTE: for live games only (all on server for corr) | |
809ba2aa | 70 | update: function(gameId, obj) //colorIdx, nextIdx, move, fen, addTime, score |
967a2686 BA |
71 | { |
72 | dbOperation((db) => { | |
73 | let objectStore = db.transaction("games", "readwrite").objectStore("games"); | |
74 | objectStore.get(gameId).onsuccess = function(event) { | |
75 | const game = event.target.result; | |
76 | if (!!obj.move) | |
77 | { | |
78 | game.moves.push(obj.move); | |
79 | game.fen = obj.fen; | |
66d03f23 | 80 | game.clocks[obj.colorIdx] += obj.addTime; |
809ba2aa | 81 | game.initime[obj.nextIdx] = Date.now(); |
967a2686 | 82 | } |
967a2686 BA |
83 | if (!!obj.score) |
84 | game.score = obj.score; | |
85 | objectStore.put(game); //save updated data | |
86 | } | |
87 | }); | |
88 | }, | |
89 | ||
fd7aea36 BA |
90 | // Retrieve all local games (running, completed, imported...) |
91 | getAll: function(callback) | |
967a2686 BA |
92 | { |
93 | dbOperation((db) => { | |
94 | let objectStore = db.transaction('games').objectStore('games'); | |
fd7aea36 BA |
95 | let games = []; |
96 | objectStore.openCursor().onsuccess = function(event) { | |
97 | let cursor = event.target.result; | |
98 | // if there is still another cursor to go, keep running this code | |
99 | if (cursor) | |
100 | { | |
101 | games.push(cursor.value); | |
102 | cursor.continue(); | |
967a2686 | 103 | } |
fd7aea36 BA |
104 | else |
105 | callback(games); | |
967a2686 | 106 | } |
fd7aea36 BA |
107 | }); |
108 | }, | |
109 | ||
110 | // Retrieve any game from its identifiers (locally or on server) | |
111 | // NOTE: need callback because result is obtained asynchronously | |
112 | get: function(gameId, callback) | |
113 | { | |
114 | // corr games identifiers are integers | |
115 | if (Number.isInteger(gameId) || !isNaN(parseInt(gameId))) | |
116 | { | |
117 | ajax("/games", "GET", {gid:gameId}, res => { | |
118 | callback(res.game); | |
119 | }); | |
120 | } | |
121 | else //local game | |
122 | { | |
123 | dbOperation((db) => { | |
124 | let objectStore = db.transaction('games').objectStore('games'); | |
967a2686 BA |
125 | objectStore.get(gameId).onsuccess = function(event) { |
126 | callback(event.target.result); | |
127 | } | |
fd7aea36 BA |
128 | }); |
129 | } | |
967a2686 BA |
130 | }, |
131 | ||
42c15a75 BA |
132 | getCurrent: function(callback) |
133 | { | |
134 | dbOperation((db) => { | |
135 | let objectStore = db.transaction('games').objectStore('games'); | |
136 | objectStore.get("*").onsuccess = function(event) { | |
137 | callback(event.target.result); | |
138 | }; | |
139 | }); | |
140 | }, | |
141 | ||
967a2686 BA |
142 | // Delete a game in indexedDB |
143 | remove: function(gameId, callback) | |
144 | { | |
145 | dbOperation((db) => { | |
146 | let transaction = db.transaction(["games"], "readwrite"); | |
147 | if (callback) | |
148 | { | |
149 | transaction.oncomplete = function() { | |
150 | callback({}); //everything's fine | |
151 | } | |
152 | transaction.onerror = function() { | |
153 | callback({errmsg: "removeGame failed: " + transaction.error}); | |
154 | }; | |
155 | } | |
156 | transaction.objectStore("games").delete(gameId); | |
157 | }); | |
158 | }, | |
159 | }; |