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added bootstrap code for cash_payments_handler.html

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This commit is contained in:
Abhishek Sinha 2019-08-31 12:21:09 +05:30
parent fa1f4bae61
commit bf5b8d0cdc
1 changed files with 168 additions and 0 deletions
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168
supernode/cash_payments_handler.html
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@ -109,6 +109,171 @@
}
function readDB(tablename, id) {
return new Promise((resolve, reject) => {
var transaction = db.transaction([tablename]);
var objectStore = transaction.objectStore(tablename);
var request = objectStore.get(id);
request.onerror = function (event) {
reject("Unable to retrieve data from database!");
};
request.onsuccess = function (event) {
if (request.result) {
resolve(request.result);
} else {
resolve();
}
};
});
}
function readDBbyIndex(tablename, index, indexValue) {
return new Promise((resolve, reject) => {
var transaction = db.transaction([tablename]);
var objectStore = transaction.objectStore(tablename);
let response = [];
objectStore.openCursor().onerror = function (event) {
console.error("Error fetching data");
reject(event);
};
objectStore.openCursor().onsuccess = function (event) {
let cursor = event.target.result;
if (cursor) {
if (cursor.value[index] == indexValue) {
response.push(cursor.value);
}
cursor.continue();
} else {
resolve(response);
}
};
});
}
function readAllDB(tablename, limit=0) {
return new Promise((resolve, reject) => {
let response = [];
var objectStore = db.transaction(tablename).objectStore(tablename);
objectStore.openCursor().onsuccess = function (event) {
let cursor = event.target.result;
if (cursor) {
response.push(cursor.value);
cursor.continue();
} else {
resolve(response);
}
};
});
}
async function addDB(tablename, dbObject) {
try {
if(typeof dbObject.vectorClock == "undefined") dbObject.vectorClock = 0;
dbObject.timestamp = + new Date();
let request = db.transaction([tablename], "readwrite")
let store = request.objectStore(tablename)
await store.add(dbObject);
await request.complete;
console.info("Data added in " + tablename);
return dbObject;
} catch (error) {
return new Error(error);
}
}
async function updateinDB(tablename, Obj, key, updateByVectorClock=false, increaseVectorClock=true) {
// updateByVectorClock==true will not return Obj back.
// Return value will be undefined
try {
if(typeof Obj.vectorClock == "undefined") {
Obj.vectorClock = 0;
} else if(increaseVectorClock === false) {
// leave the vector clock field unchanged
} else {
Obj.vectorClock += 1;
}
if (typeof Obj.timestamp !== "number") {
Obj.timestamp = + new Date();
}
var request = db.transaction([tablename], "readwrite")
let store = request.objectStore(tablename)
if (updateByVectorClock===true) {
if (typeof key=="undefined") {
key = Obj[store.keyPath];
}
let objectStoreRequest = store.get(key);
objectStoreRequest.onsuccess =
async function(event) {
var myRecord = objectStoreRequest.result;
if(typeof myRecord !=="object") {
Obj.vectorClock = 1;
await store.put(Obj);
await request.complete;
} else if (myRecord.vectorClock+1 < Obj.vectorClock) {
await store.put(Obj);
await request.complete;
}
}
} else {
await store.put(Obj);
await request.complete;
}
return Obj;
} catch (error) {
return new Error(error);
}
}
async function removeinDB(tablename, id) {
try {
var request = db.transaction([tablename], "readwrite")
let store = request.objectStore(tablename)
await store.delete(id);
await request.complete;
return id;
} catch (error) {
return new Error(error);
}
}
function removeByIndex(tablename, indexName, indexValue) {
return new Promise((resolve, reject) => {
var request = db.transaction([tablename], "readwrite")
.objectStore(tablename);
var index = request.index(indexName);
var request = index.openCursor(IDBKeyRange.only(indexValue));
request.onsuccess = function () {
var cursor = request.result;
if (cursor) {
cursor.delete();
cursor.continue();
} else {
resolve(true);
}
};
request.onerror = function (e) {
reject(e);
}
})
}
async function removeAllinDB(tablename) {
try {
var request = db.transaction([tablename], "readwrite")
var objectStore = request.objectStore(tablename);
var objectStoreRequest = await objectStore.clear();
await request.complete;
console.info("All the data entry has been removed from your database " + tablename);
return tablename;
} catch (error) {
return new Error(error);
}
}
/* CODE_JUNCTION: Websockets */
function startWebSocket(wsUri) {
@ -153,6 +318,9 @@
}
})();
</script>
</body>