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257 lines (236 loc) · 11.4 KB
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(function (EXPORTS) { //compactIDB v2.1.2
/* Compact IndexedDB operations */
'use strict';
const compactIDB = EXPORTS;
var defaultDB;
const indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
const IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction;
const IDBKeyRange = window.IDBKeyRange || window.webkitIDBKeyRange || window.msIDBKeyRange;
if (!indexedDB) {
console.error("Your browser doesn't support a stable version of IndexedDB.");
return;
}
compactIDB.setDefaultDB = dbName => defaultDB = dbName;
Object.defineProperty(compactIDB, 'default', {
get: () => defaultDB,
set: dbName => defaultDB = dbName
});
function getDBversion(dbName = defaultDB) {
return new Promise((resolve, reject) => {
openDB(dbName).then(db => {
resolve(db.version)
db.close()
}).catch(error => reject(error))
})
}
function upgradeDB(dbName, createList = null, deleteList = null) {
return new Promise((resolve, reject) => {
getDBversion(dbName).then(version => {
var idb = indexedDB.open(dbName, version + 1);
idb.onerror = (event) => reject("Error in opening IndexedDB");
idb.onupgradeneeded = (event) => {
let db = event.target.result;
if (createList instanceof Object) {
if (Array.isArray(createList)) {
let tmp = {}
createList.forEach(o => tmp[o] = {})
createList = tmp
}
for (let o in createList) {
let obs = db.createObjectStore(o, createList[o].options || {});
if (createList[o].indexes instanceof Object)
for (let i in createList[o].indexes)
obs.createIndex(i, i, createList[o].indexes || {});
}
}
if (Array.isArray(deleteList))
deleteList.forEach(o => db.deleteObjectStore(o));
resolve('Database upgraded')
}
idb.onsuccess = (event) => event.target.result.close();
}).catch(error => reject(error))
})
}
compactIDB.initDB = function (dbName, objectStores = {}) {
return new Promise((resolve, reject) => {
if (!(objectStores instanceof Object))
return reject('ObjectStores must be an object or array')
defaultDB = defaultDB || dbName;
var idb = indexedDB.open(dbName);
idb.onerror = (event) => reject("Error in opening IndexedDB");
idb.onsuccess = (event) => {
var db = event.target.result;
let cList = Object.values(db.objectStoreNames);
var obs = {},
a_obs = {},
d_obs = [];
if (!Array.isArray(objectStores))
var obs = objectStores
else
objectStores.forEach(o => obs[o] = {})
let nList = Object.keys(obs)
for (let o of nList)
if (!cList.includes(o))
a_obs[o] = obs[o]
for (let o of cList)
if (!nList.includes(o))
d_obs.push(o)
if (!Object.keys(a_obs).length && !d_obs.length)
resolve("Initiated IndexedDB");
else
upgradeDB(dbName, a_obs, d_obs)
.then(result => resolve(result))
.catch(error => reject(error))
db.close();
}
});
}
const openDB = compactIDB.openDB = function (dbName = defaultDB) {
return new Promise((resolve, reject) => {
var idb = indexedDB.open(dbName);
idb.onerror = (event) => reject("Error in opening IndexedDB");
idb.onupgradeneeded = (event) => {
event.target.result.close();
deleteDB(dbName).then(_ => null).catch(_ => null).finally(_ => reject("Datebase not found"))
}
idb.onsuccess = (event) => resolve(event.target.result);
});
}
const deleteDB = compactIDB.deleteDB = function (dbName = defaultDB) {
return new Promise((resolve, reject) => {
var deleteReq = indexedDB.deleteDatabase(dbName);;
deleteReq.onerror = (event) => reject("Error deleting database!");
deleteReq.onsuccess = (event) => resolve("Database deleted successfully");
});
}
compactIDB.writeData = function (obsName, data, key = false, dbName = defaultDB) {
return new Promise((resolve, reject) => {
openDB(dbName).then(db => {
var obs = db.transaction(obsName, "readwrite").objectStore(obsName);
let writeReq = (key ? obs.put(data, key) : obs.put(data));
writeReq.onsuccess = (evt) => resolve(`Write data Successful`);
writeReq.onerror = (evt) => reject(
`Write data unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`
);
db.close();
}).catch(error => reject(error));
});
}
compactIDB.addData = function (obsName, data, key = false, dbName = defaultDB) {
return new Promise((resolve, reject) => {
openDB(dbName).then(db => {
var obs = db.transaction(obsName, "readwrite").objectStore(obsName);
let addReq = (key ? obs.add(data, key) : obs.add(data));
addReq.onsuccess = (evt) => resolve(`Add data successful`);
addReq.onerror = (evt) => reject(
`Add data unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`
);
db.close();
}).catch(error => reject(error));
});
}
compactIDB.removeData = function (obsName, key, dbName = defaultDB) {
return new Promise((resolve, reject) => {
openDB(dbName).then(db => {
var obs = db.transaction(obsName, "readwrite").objectStore(obsName);
let delReq = obs.delete(key);
delReq.onsuccess = (evt) => resolve(`Removed Data ${key}`);
delReq.onerror = (evt) => reject(
`Remove data unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`
);
db.close();
}).catch(error => reject(error));
});
}
compactIDB.clearData = function (obsName, dbName = defaultDB) {
return new Promise((resolve, reject) => {
openDB(dbName).then(db => {
var obs = db.transaction(obsName, "readwrite").objectStore(obsName);
let clearReq = obs.clear();
clearReq.onsuccess = (evt) => resolve(`Clear data Successful`);
clearReq.onerror = (evt) => reject(`Clear data Unsuccessful`);
db.close();
}).catch(error => reject(error));
});
}
compactIDB.readData = function (obsName, key, dbName = defaultDB) {
return new Promise((resolve, reject) => {
openDB(dbName).then(db => {
var obs = db.transaction(obsName, "readonly").objectStore(obsName);
let getReq = obs.get(key);
getReq.onsuccess = (evt) => resolve(evt.target.result);
getReq.onerror = (evt) => reject(
`Read data unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`
);
db.close();
}).catch(error => reject(error));
});
}
compactIDB.readAllData = function (obsName, dbName = defaultDB) {
return new Promise((resolve, reject) => {
openDB(dbName).then(db => {
var obs = db.transaction(obsName, "readonly").objectStore(obsName);
var tmpResult = {}
let curReq = obs.openCursor();
curReq.onsuccess = (evt) => {
var cursor = evt.target.result;
if (cursor) {
tmpResult[cursor.primaryKey] = cursor.value;
cursor.continue();
} else
resolve(tmpResult);
}
curReq.onerror = (evt) => reject(
`Read-All data unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`
);
db.close();
}).catch(error => reject(error));
});
}
/* compactIDB.searchData = function (obsName, options = {}, dbName = defaultDB) {
return new Promise((resolve, reject) => {
openDB(dbName).then(db => {
var obs = db.transaction(obsName, "readonly").objectStore(obsName);
var filteredResult = {}
let keyRange;
if(options.lowerKey!==null && options.upperKey!==null)
keyRange = IDBKeyRange.bound(options.lowerKey, options.upperKey);
else if(options.lowerKey!==null)
keyRange = IDBKeyRange.lowerBound(options.lowerKey);
else if (options.upperKey!==null)
keyRange = IDBKeyRange.upperBound(options.upperBound);
else if (options.atKey)
let curReq = obs.openCursor(keyRange, )
}).catch(error => reject(error))
})
}*/
compactIDB.searchData = function (obsName, options = {}, dbName = defaultDB) {
options.lowerKey = options.atKey || options.lowerKey || 0
options.upperKey = options.atKey || options.upperKey || false
options.patternEval = options.patternEval || ((k, v) => true);
options.limit = options.limit || false;
options.reverse = options.reverse || false;
options.lastOnly = options.lastOnly || false
return new Promise((resolve, reject) => {
openDB(dbName).then(db => {
var obs = db.transaction(obsName, "readonly").objectStore(obsName);
var filteredResult = {}
let curReq = obs.openCursor(
options.upperKey ? IDBKeyRange.bound(options.lowerKey, options.upperKey) : IDBKeyRange.lowerBound(options.lowerKey),
options.lastOnly || options.reverse ? "prev" : "next");
curReq.onsuccess = (evt) => {
var cursor = evt.target.result;
if (!cursor || (options.limit && options.limit <= Object.keys(filteredResult).length))
return resolve(filteredResult); //reached end of key list or limit reached
else if (options.patternEval(cursor.primaryKey, cursor.value)) {
filteredResult[cursor.primaryKey] = cursor.value;
options.lastOnly ? resolve(filteredResult) : cursor.continue();
} else
cursor.continue();
}
curReq.onerror = (evt) => reject(`Search unsuccessful [${evt.target.error.name}] ${evt.target.error.message}`);
db.close();
}).catch(error => reject(error));
});
}
})(window.compactIDB = {});