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Firebase Stub: simple implementation of data changes listener

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This commit is contained in:
gianantoniopini
2021-01-14 14:48:07 +01:00
parent 6d36c27889
commit 46781bba60
3 changed files with 135 additions and 79 deletions
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__mocks__/gatsby-plugin-firebase/database/reference.js
+48 -47
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@@ -68,27 +68,7 @@ class Reference {
return this._equalToValue;
}
debounceEventCallback(eventType) {
if (!(eventType in this.eventCallbacks)) {
return;
}
let snapshot = new DataSnapshot(eventType, () => this.getData(), null);
if (this.path === DatabaseConstants.connectedPath) {
snapshot = new DataSnapshot(eventType, () => this.getData(), true);
} else if (this.path === DatabaseConstants.resumesPath) {
snapshot = new DataSnapshot(eventType, () => this.getData());
}
const debouncedEventCallback = debounce(
this.eventCallbacks[eventType],
100,
);
debouncedEventCallback(snapshot);
}
getData() {
_getData() {
const databaseData = this._getDatabaseData(this.path);
if (!databaseData) {
@@ -106,6 +86,49 @@ class Reference {
return databaseData;
}
_setData(value) {
if (typeof value === 'undefined') {
throw new Error('value must be provided.');
}
this._setDatabaseData(this.path, value);
this.debounceEventCallback(DatabaseConstants.valueEventType);
const pathElements = this.path.split('/');
if (pathElements.length === 2) {
const parentReference = this._getReference(pathElements[0]);
if (parentReference) {
parentReference.debounceEventCallback(DatabaseConstants.valueEventType);
}
}
}
debounceEventCallback(eventType) {
if (!(eventType in this.eventCallbacks)) {
return;
}
let snapshot = new DataSnapshot(eventType, () => this._getData(), null);
if (this.path === DatabaseConstants.connectedPath) {
snapshot = new DataSnapshot(eventType, () => this._getData(), true);
} else if (this.path === DatabaseConstants.resumesPath) {
snapshot = new DataSnapshot(eventType, () => this._getData());
}
const debouncedEventCallback = debounce(
this.eventCallbacks[eventType],
100,
);
debouncedEventCallback(snapshot);
}
equalTo(value) {
this._equalToValue = value;
return this;
}
initializeQueryParameters() {
this._orderByChildPath = '';
this._equalToValue = '';
@@ -126,7 +149,7 @@ class Reference {
}
async once(eventType) {
const newDataSnapshot = new DataSnapshot(eventType, () => this.getData());
const newDataSnapshot = new DataSnapshot(eventType, () => this._getData());
const existingDataSnapshot = this._dataSnapshots[newDataSnapshot.eventType];
if (existingDataSnapshot) {
return Promise.resolve(existingDataSnapshot);
@@ -141,36 +164,14 @@ class Reference {
return this;
}
equalTo(value) {
this._equalToValue = value;
return this;
}
async update(value) {
if (typeof value === 'undefined') {
throw new Error('value must be provided.');
}
this._setData(value);
const result = this !== null;
return Promise.resolve(result);
return Promise.resolve(true);
}
async set(value) {
if (typeof value === 'undefined') {
throw new Error('value must be provided.');
}
this._setDatabaseData(this.path, value);
this.debounceEventCallback(DatabaseConstants.valueEventType);
const pathElements = this.path.split('/');
if (pathElements.length === 2) {
const parentReference = this._getReference(pathElements[0]);
if (parentReference) {
parentReference.debounceEventCallback(DatabaseConstants.valueEventType);
}
}
this._setData(value);
return Promise.resolve(true);
}