65 lines
1.4 KiB
JavaScript
65 lines
1.4 KiB
JavaScript
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let oldpath
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let msgin
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module.exports = function(RED) {
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function FirebaseAdmin(config) {
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RED.nodes.createNode(this, config);
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var node = this;
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const cb = (res)=>{
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console.log('firebase get result '+res)
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//console.dir(res)
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let val = res.val()
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//console.dir(val)
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if(msgin){
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msgin.payload = val
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node.send(msgin)
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} else {
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node.send({payload: val})
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}
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}
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let setUpListener = (path)=>{
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console.log('rtdb-on setUpListener for path '+path)
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if(oldpath){
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this.admin.database().ref(oldpath).off('value', cb)
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}
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if(path){
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this.admin.database().ref(path).on('value', cb)
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oldpath = path
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} else {
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console.log('----- rtdb-on got empty path !!')
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console.dir(config)
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}
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}
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if(config.cred){
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let c = RED.nodes.getNode(config.cred)
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this.admin = c.admin
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}
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//console.log('------------------------------- rtdg-get config')
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//console.dir(config)
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this.path = config.path
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if(this.path){
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setUpListener(this.path)
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}
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//console.log('configuring rtdb-on to listen for messages')
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node.on('input', function(msg) {
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let path = this.path
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if(msg && msg.payload){
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path = path || msg.payload.path
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msgin = msg
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setUpListener(path)
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}
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}.bind(this));
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}
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RED.nodes.registerType("rtdb-on", FirebaseAdmin);
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} |