0.1.10 add makeCombination, fix bug in makeObserver, refactor failed, add sending boolean event as array where first element is ready value to check

.npmignore

@@ -2,3 +2,4 @@ tests/
 test/
 *.test.js
 testing/
+examples/

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@uci-utils/ready",
-  "version": "0.1.7",
+  "version": "0.1.10",
   "description": "A Class to Observe the reduced to boolean combined state of a map of observables",
   "main": "src/ready.js",
   "scripts": {
@@ -22,7 +22,7 @@
   },
   "homepage": "https://github.com/uCOMmandIt/uci-utils#readme",
   "dependencies": {
-    "@uci-utils/to-boolean": "^0.1.1",
+    "@uci-utils/to-boolean": "^0.1.5",
     "is-observable": "^2.0.0",
     "is-plain-object": "^3.0.0",
     "p-is-promise": "^3.0.0",
@@ -31,7 +31,7 @@
   "devDependencies": {
     "chai": "^4.2.0",
     "esm": "^3.2.25",
-    "mocha": "^6.2.2",
-    "nodemon": "^1.19.4"
+    "mocha": "^7.0.1",
+    "nodemon": "^2.0.2"
   }
 }

src/ready.js

@@ -8,12 +8,14 @@ import isPlainObject from 'is-plain-object'
 import { createBoolean } from '@uci-utils/to-boolean'
 
 class Ready extends Map {
-  constructor(opts) {
+  constructor(opts={}) {
     super(opts.observables)
     this.emitter = isEmitter(opts.emitter) ? opts.emitter : null
     const toBool = createBoolean(opts.boolean)
     this.toBoolean = (value) => {
+      // can emit plain object with ready prop, or array with first value as ready value or just ready value
       if (isPlainObject(value)) value = (value.ready || value.online || value.active || false)
+      if (Array.isArray(value)) value=value[0]
       return toBool(value)
     }
     this.condition = opts.condition || ( (ev) => this.toBoolean(ev) )
@@ -27,19 +29,26 @@ class Ready extends Map {
     if (opts.verbose||process.env.UCI_READY_VERBOSE==='true') this.logger.subscribe(console.log)
     this.handler = opts.handler || ((ready) => {console.log('default handler', ready)})
     this._first = true   // tracks first emission
+    console.log('@uci-utils/ready package tag 0.1.10')
   }
 
   get observers(){return Array.from(this.keys())}
   get combinations(){return Array.from(this._combinations.keys())}
   get all() { return this._all}
 
-  get failure () {
-    let ret = null
-    let failed = this.state.some(obs=> {
-      ret = obs[0]
-      return obs[1]===false
+  get failed() {
+    // console.log('making failures from',this.state)
+    let failed = this.state
+      .filter(([,ready]) => {
+        // console.log('in filter', ready)
+        // return !await this.getValue(name)
+        // ret = obs[0]
+        return !ready
       })
-    return !failed ? '__none__' : ret
+      .map(obs=> {return {name:obs[0], details: this.getObserverDetails(obs[0])} })
+    // console.log('failed as filtered', failed)
+
+    return failed.length ? failed : '__none__'
   }
 
   getObserverDetails(name) { return (this.get(name)||{}).details}
@@ -67,9 +76,10 @@ class Ready extends Map {
   getValue(name) {  //  NOT recommended.  if there is any issue will return false
     let obs = this.getObserver(name)
     return new Promise(resolve => {
-      setTimeout(()=>resolve(false),50)
+      setTimeout(()=>resolve(false),100)
       if (isObservable(obs)){
         const sub = obs.subscribe(val => {
+          console.log('in value subscriber', name,val)
           resolve(val)
         })
         sub.unsubscribe()
@@ -85,13 +95,18 @@ class Ready extends Map {
     condition = condition || this.condition
     if (isEmitter(obs) && (event || name)) obs = fromEvent(obs, event || name )  // it's an emitter
     if (isPromise(obs)) obs = from(obs) // it's a promise
-    if (!obs && this.emitter && (event || name)) obs = fromEvent(this.emitter,(event || name))
+    if ((!obs || typeof obs==='string') && this.emitter && (event || name || obs)) obs = fromEvent(this.emitter,(event || name || obs))
     if (!obs || !isObservable(obs)) return false
     let xobs = obs.pipe(
       tap(val => this.log(`${name} emitted/resolved the value =>${JSON.stringify(val)}`)),
+      // tap(val => console.log(`${name} emitted/resolved the value =>${JSON.stringify(val)}`)),
       // TODO retain plain object if it has a ready property
       map(condition),
+      // tap(val => console.log(`boolean: ${val}`)),
       tap(val => this.log(`boolean: ${val}`)),
+      map(val => {
+        // if (opts.reverse) console.log('reversing', val, opts.reverse ? !val : val)
+        return opts.reverse ? !val : val}),
       startWith(false),
       // shareReplay({refCount:true, bufferSize:1}),
       shareReplay(1),
@@ -131,6 +146,19 @@ class Ready extends Map {
     // TODO update affected combinations
   }
 
+  // TODO have combineObservers call this
+  makeCombination(observers,list){
+    observers = observers.filter(obs=>obs._readyType)
+    if (!observers.length) return false
+    let combination = combineLatest(observers).pipe(
+      tap(states => { if (list) this.log(list.map((name,index) => [name,states[index]]))}),
+      map(states => states.reduce((res,state) => {return res && state},true)),
+      changed(), //filters out emission if it is unchanged from last  TODO replace with distinctUntilChanged
+      shareReplay(1)
+    )
+    return combination
+  }
+
   // TODO add option for whether changed is enabled (default) or not and store with combo for remake
   combineObservers(name,list,opts={}) {
     if (!name || typeof(name)!=='string') return false // name required
@@ -141,14 +169,7 @@ class Ready extends Map {
       else return false
     }
     let observers = list.map(name=>{return name._readyType ? name : this.getObserver(name)})
-    observers = observers.filter(obs=>obs._readyType)
-    if (!observers.length) return false
-    let combination = combineLatest(observers).pipe(
-      tap(states => { this.log(list.map((name,index) => [name,states[index]]))}),
-      map(states => states.reduce((res,state) => {return res && state},true)),
-      changed(), //filters out emission if it is unchanged from last
-      shareReplay(1)
-    )
+    const combination = this.makeCombination(observers,list)
     this._combinations.set(name, combination)  // if name passed then save combo in Map
     return combination
   }