philcockfield · December 3, 2012 07:42 · Dec 3, 2012 · Dec 3, 2012
diff --git a/auth.coffee b/auth.coffee
@@ -23,7 +23,6 @@ do ->
     css
 
   tmpl.label = -> 
-    # return 'Loading...' if Session.get('fb-loading') is true
     switch ns.signedIn()
       when true then 'Sign Out'
       when false then 'Sign In'

diff --git a/auth.coffee b/auth.coffee
@@ -0,0 +1,35 @@
+do -> 
+  # See: http://developers.facebook.com/docs/reference/javascript/
+  ns = APP.ns 'core.facebook'
+
+
+  # ---------------------- Methods ----------------------
+
+  ns.login    = (callback) -> FB.login -> callback?()
+  ns.logout   = (callback) -> FB.logout -> callback?()
+  ns.signedIn = -> authStatus() is 'signed-in'
+
+  authStatus  = -> Session.get('auth-status')
+
+
+
+  # ---------------------- Templates ----------------------
+
+  tmpl = Template['core-facebook-btn-login']
+
+  tmpl.class = -> 
+    css = ''
+    css += 'hidden' if authStatus() is 'unknown'
+    css
+
+  tmpl.label = -> 
+    # return 'Loading...' if Session.get('fb-loading') is true
+    switch ns.signedIn()
+      when true then 'Sign Out'
+      when false then 'Sign In'
+
+  tmpl.events =
+    'click button.fb.login': ->
+      switch ns.signedIn()
+        when true then ns.logout()
+        when false then ns.login()
diff --git a/auth.html b/auth.html
@@ -0,0 +1,4 @@
+<template name='core-facebook-btn-login'>
+  <button class='core btn fb login {{class}}'>{{ label }}</button>
+</template>
+
diff --git a/auth_server.coffee b/auth_server.coffee
@@ -0,0 +1,12 @@
+Meteor.methods
+  facebookLogin: (fbUser, accessToken) -> 
+    serviceData =
+      id:           fbUser.id
+      accessToken:  accessToken
+      email:        fbUser.email
+
+    options = 
+      profile: 
+        name:   fbUser.name
+
+    userId = Accounts.updateOrCreateUserFromExternalService('facebook', serviceData, options).id
diff --git a/facebook_auth_status.coffee b/facebook_auth_status.coffee
@@ -0,0 +1,49 @@
+do -> 
+  ns = APP.ns 'core.facebook'
+
+  ###
+  Monitors the Facebook SDK and provides a consistent set of 
+  status updates.
+  ###
+  ns._facebookAuthStatus = -> 
+    # Wire up events.
+    FB.Event.subscribe 'auth.authResponseChange', (res) -> updateStatus()
+    FB.getLoginStatus (res) -> updateStatus()
+
+    getFacebookUser = (callback) -> 
+      if ns.user?
+        callback?(ns.user)
+      else
+        FB.api '/me', (fbUser) -> 
+          ns.user = fbUser
+          Session.set 'fb-user', fbUser
+          callback?(fbUser)
+
+    setStatus = (value) -> Session.set 'fb-auth-status', value
+
+    updateStatus = -> 
+      authResponse = FB.getAuthResponse()
+
+      if authResponse is undefined
+        setStatus 'unknown'
+      else if authResponse is null
+        reset()
+        setStatus 'signed-out'
+      else
+        Session.set 'fb-token', authResponse.accessToken
+        if ns.user?
+          setStatus 'signed-in'
+        else
+          setStatus 'pending-user'
+          getFacebookUser -> updateStatus()
+
+
+    reset = -> 
+      ns.user = null
+      Session.set 'fb-user', null
+      Session.set 'fb-auth-token', null
+
+
+
+
+
diff --git a/meteor_auth_status.coffee b/meteor_auth_status.coffee
@@ -0,0 +1,34 @@
+###
+Manages the Meteor authentication status, which involves authenticating
+against the Meteor backend after the Facebook SDK has completed it's
+authentication steps.
+###
+do -> 
+  ns = APP.ns 'core.facebook'
+
+  setStatus = (value) -> Session.set 'auth-status', value
+  setStatus 'unknown'
+
+  SIGNED_IN   = 'signed-in'
+  SIGNED_OUT  = 'signed-out'
+
+
+  serverLogin = (callback) -> 
+    fbUser = Session.get('fb-user')
+    token  = Session.get('fb-token')
+    Meteor.call 'facebookLogin', fbUser, token, (err, userId) -> 
+      # Hook into the core Meteor account system, and pop
+      # the client into a state of being logged in.
+      Accounts._makeClientLoggedIn userId, token
+      callback?()
+
+
+  Meteor.autorun -> 
+    switch Session.get( 'fb-auth-status' )
+      when SIGNED_IN
+        serverLogin -> setStatus SIGNED_IN
+
+      when SIGNED_OUT
+        Meteor.logout -> setStatus SIGNED_OUT
+
+