Firebase 3

[dinoboff]

Firebase 3 relies on App which encapsulate a connection to a firebase app (allows multiple connection to different app or with deferent auth). Instead of various intermediary services between our datastore services and the firebase client, the angular app simply require a "firebaseApp" constant, which is easy to mock in test.

We can remove most firebase related services; no more spfFirebaseRef or spfFirebase.

One issue, is that the requests are no longer logged to the console.

singpath-core API changes:

• added "firebaseApp" constant: this is just a firebase.app.App;
• removed "spfFirebaseRef": use firebaseApp.database().ref() instead (and template string to build a path);
• removed "spfFirebase": use firebase Reference method and angularFire method directly;
• added userInfo method to spfAuth services (return the the name and email from the Oauth2 signup data);
• spfAuth.logout() now return a promise.

OtherspfAuth method and spfAuthdata are unchanged.

TODO:

• [x] add tests for "singpath-core/services/datastore.js".
• [x] update classmentors dependencies.
• [x] update classmentors with new firebase access.
• [x] update deploy scripts to switch firebase app targets.

[SingaporeClouds]

Console errors Running with npm start after npm install and npm test.

Console errors after running npm build and npm run serve-build

[dinoboff]

It's a work in progress; only src/packages/singpath-core as been migrated (this is were spfFirebaseRef and spfFirebase.

Only singpath-core demo is completed:

cd src/packages/singpath-core
npm install
npm start

[dinoboff]

@SingaporeClouds @shiquan-lim It's ready for review.

When will it be suitable to merge? It might disrupt some PR in progress.

[dinoboff]

@SingaporeClouds @shiquan-lim

Rebased on last PR.

I will merge this PR once I document firebase angularFire setup on example app.

ps: this PR fails coverage check since it's adding all the code base to coverage, but I set coveralls to only report any decrease in coverage while the coverage is so low.

[coveralls]

Coverage decreased (-92.3%) to 7.697% when pulling 6bf0d14ce2a18a7d9883366d5a79502db525c06b on dinoboff:firebase-3 into 3621fe21e41b28f57f4d98a89f0c7b6f7fdbf208 on singpath:master.

[dinoboff]

@SingaporeClouds @shiquan-lim

PR replaces:

• var ref = spfFirebase.ref(['path/to', someId]) ->

var db = firebaseApp.database();
var ref = db.ref(`path/to/${someId}}`);

• var obj = spfFirebase.loadedObj(['path/to', someId]) ->

var db = firebaseApp.database();
var ref =  db.ref(`path/to/${someId}}`);
var obj = $firebaseObject(ref);

obj.$loaded().then(() => dosomething(obj);

• same thing with spfFirebase.loadedArray

No more intermediary services; we are now using firebase reference directly. Here is a guide for the for migrated code from firebase 2 to firebase 3 sdk.

The PR also create an index of component that the main module loads instead of each component individually.

Finally, In a few cases I used someRef.once() instead of creating a synchronized firebase object because the data needed to be read only once.

One change I didn't notice is that the initial value of $firebaseAuth.$getAuth() always returns null initially.

in #95, I added spfAuth.$loaded() to deal with it; a few view loading logic had to be adjusted.