| 1 | // Game object: { |
| 2 | // // Static informations: |
| 3 | // id: 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, |
| 15 | // initime: array of integers (when clock start running), |
| 16 | // score: string (several options; '*' == running), |
| 17 | // } |
| 18 | |
| 19 | import { ajax } from "@/utils/ajax"; |
| 20 | |
| 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 |
| 42 | let objectStore = db.createObjectStore("games", { keyPath: "id" }); |
| 43 | objectStore.createIndex("score", "score"); //to search by game result |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | export const GameStorage = |
| 48 | { |
| 49 | // Optional callback to get error status |
| 50 | // TODO: this func called from Hall seems to not work now... |
| 51 | add: function(game, callback) |
| 52 | { |
| 53 | dbOperation((db) => { |
| 54 | let transaction = db.transaction("games", "readwrite"); |
| 55 | if (callback) |
| 56 | { |
| 57 | transaction.oncomplete = function() { |
| 58 | callback({}); //everything's fine |
| 59 | } |
| 60 | transaction.onerror = function() { |
| 61 | callback({errmsg: "addGame failed: " + transaction.error}); |
| 62 | }; |
| 63 | } |
| 64 | let objectStore = transaction.objectStore("games"); |
| 65 | objectStore.add(game); |
| 66 | }); |
| 67 | }, |
| 68 | |
| 69 | // TODO: also option to takeback a move ? |
| 70 | update: function(gameId, obj) //move, fen, clocks, score, initime, ... |
| 71 | { |
| 72 | if (Number.isInteger(gameId) || !isNaN(parseInt(gameId))) |
| 73 | { |
| 74 | // corr: only move, fen and score |
| 75 | ajax( |
| 76 | "/games", |
| 77 | "PUT", |
| 78 | { |
| 79 | gid: gameId, |
| 80 | newObj: |
| 81 | { |
| 82 | move: obj.move, //may be undefined... |
| 83 | fen: obj.fen, |
| 84 | score: obj.score, |
| 85 | } |
| 86 | } |
| 87 | ); |
| 88 | } |
| 89 | else |
| 90 | { |
| 91 | // live |
| 92 | dbOperation((db) => { |
| 93 | let objectStore = db.transaction("games", "readwrite").objectStore("games"); |
| 94 | objectStore.get(gameId).onsuccess = function(event) { |
| 95 | const game = event.target.result; |
| 96 | Object.keys(obj).forEach(k => { |
| 97 | if (k == "move") |
| 98 | game.moves.push(obj[k]); |
| 99 | else |
| 100 | game[k] = obj[k]; |
| 101 | }); |
| 102 | objectStore.put(game); //save updated data |
| 103 | } |
| 104 | }); |
| 105 | } |
| 106 | }, |
| 107 | |
| 108 | // Retrieve all local games (running, completed, imported...) |
| 109 | getAll: function(callback) |
| 110 | { |
| 111 | dbOperation((db) => { |
| 112 | let objectStore = db.transaction('games').objectStore('games'); |
| 113 | let games = []; |
| 114 | objectStore.openCursor().onsuccess = function(event) { |
| 115 | let cursor = event.target.result; |
| 116 | // if there is still another cursor to go, keep running this code |
| 117 | if (cursor) |
| 118 | { |
| 119 | games.push(cursor.value); |
| 120 | cursor.continue(); |
| 121 | } |
| 122 | else |
| 123 | callback(games); |
| 124 | } |
| 125 | }); |
| 126 | }, |
| 127 | |
| 128 | // Retrieve any game from its identifiers (locally or on server) |
| 129 | // NOTE: need callback because result is obtained asynchronously |
| 130 | get: function(gameId, callback) |
| 131 | { |
| 132 | // corr games identifiers are integers |
| 133 | if (Number.isInteger(gameId) || !isNaN(parseInt(gameId))) |
| 134 | { |
| 135 | ajax("/games", "GET", {gid:gameId}, res => { |
| 136 | let game = res.game; |
| 137 | game.moves.forEach(m => { |
| 138 | m.squares = JSON.parse(m.squares); |
| 139 | }); |
| 140 | callback(game); |
| 141 | }); |
| 142 | } |
| 143 | else //local game |
| 144 | { |
| 145 | dbOperation((db) => { |
| 146 | let objectStore = db.transaction('games').objectStore('games'); |
| 147 | objectStore.get(gameId).onsuccess = function(event) { |
| 148 | callback(event.target.result); |
| 149 | } |
| 150 | }); |
| 151 | } |
| 152 | }, |
| 153 | |
| 154 | getCurrent: function(callback) |
| 155 | { |
| 156 | dbOperation((db) => { |
| 157 | let objectStore = db.transaction('games').objectStore('games'); |
| 158 | objectStore.get("*").onsuccess = function(event) { |
| 159 | callback(event.target.result); |
| 160 | }; |
| 161 | }); |
| 162 | }, |
| 163 | |
| 164 | // Delete a game in indexedDB |
| 165 | remove: function(gameId, callback) |
| 166 | { |
| 167 | dbOperation((db) => { |
| 168 | let transaction = db.transaction(["games"], "readwrite"); |
| 169 | if (callback) |
| 170 | { |
| 171 | transaction.oncomplete = function() { |
| 172 | callback({}); //everything's fine |
| 173 | } |
| 174 | transaction.onerror = function() { |
| 175 | callback({errmsg: "removeGame failed: " + transaction.error}); |
| 176 | }; |
| 177 | } |
| 178 | transaction.objectStore("games").delete(gameId); |
| 179 | }); |
| 180 | }, |
| 181 | }; |