main.js

//
//
// new node controller
//
// main.js
//
//
// Jake Read at the Center for Bits and Atoms
// (c) Massachusetts Institute of Technology 2018
//
// This work may be reproduced, modified, distributed, performed, and
// displayed for any purpose, but must acknowledge the mods
// project. Copyright is retained and must be preserved. The work is
// provided as is; no warranty is provided, and users accept all
// liability.

/*

RULES:

*/

/*

SERVER

*/

/*
------------------------------------------------------
PROGRAM AS API
------------------------------------------------------
*/

// nodes are objects having inputs, outputs, and state
// nodes can be made up of other nodes 
// a node originates somewhere, 

// is it a JSON, or a txt .js file ? loadProgram and loadModule ...
// it wants to be an object that gets 'read' in ... 

const Reps = require('./reps.js')
const Programs = require('./programs.js')

var program = {} 

program = Programs.open('save/onesave.json')

const View = require('./views.js')
View.startHttp() 
View.startWs() 

Programs.assignSocket(View.uiSocket)
View.assignProgram(program)

/*

PROGRAM REPRESENT 

*/

//console.log('modules at prgmem start', modules)
function putReps() {
    var reps = new Array()
    for (mod in modules) {
        reps.push(makeRep(modules[mod]))
    }
    socketSend('add reps', reps)
}

function makeRep(mod) {
    // scrape for only things we'll want to represent 
    var rep = {
        id: mod.id,
        desc: mod.description,
        inputs: mod.inputs,
        outputs: mod.outputs,
        state: {}
    }

    // holds UI information - to load mods at location
    if (mod.ui != null) {
        rep.ui = mod.ui
    }

    for (var key in mod.state) {
        if (isStateKey(key)) {
            rep.state[key] = mod.state[key]
        }
    }

    return rep
}

function putRep(mod) {
    socketSend('add rep', makeRep(mod))
}

function changeRep(mod) {
    socketSend('change rep', makeRep(mod))
}

// update state from UI to server 
function changeState(data) {
    // of one module 
    // should just recv all state, walk tree for differences
    var oldState = modules[data.id].state
    var newState = data.state
    // rep only holds proper key-values w/o emitters, _values etc
    for (var key in newState) {
        if (isStateKey(key)) {
            if (oldState[key].isButton) {
                if (oldState[key].isPressed != newState[key].isPressed) {
                    console.log('CHANGE BUTTON STATE', key, 'to', newState[key], 'in', data.id)
                    // this will trigger some 'onChange' f'ns
                    // that might change some state
                    oldState[key] = newState[key]
                    // to prevent quickly changing it back, we'll exit now (one state change from UI per trx)
                    return true
                }
            } else if (oldState[key].isMultiLine) {
                if (oldState[key].value != newState[key].value) {
                    console.log('CHANGE MULTILINE STATE', key, 'to', newState[key].value, 'in', data.id)
                    oldState[key].value = newState[key].value
                    return true
                }
            } else if (oldState[key] !== newState[key]) {
                console.log('CHANGE STATE', key, 'to', newState[key], 'in', data.id)
                oldState[key] = newState[key]
                return true
            }
        }
    }
}

function changeUi(data) {
    var mod = modules[data.id]
    if (mod.ui == null) {
        console.log("NO UI")
        mod.ui = {}
    }
    mod.ui = data.ui
    console.log('CHANGE UI', mod.id, mod.ui)
}

function setUiPos(module, left, top) {
    if (module.ui == null) {
        module.ui = {}
    }
    module.ui.left = left
    module.ui.top = top
}

// push new state from server to UI
function putState(mod) {
    // push just the state to the individual mod
    // copy only the keys we want to see 
    var state = {}
    for (var key in mod.state) {
        if (isStateKey(key)) {
            state[key] = mod.state[key]
        }
    }
    var data = {
        id: mod.id,
        state: state
    }
    socketSend('change state', data)
}

function putLink(data) {
    var fromModule = modules.find((module) => {
        return module.id === data.from.id
    })

    var toModule = modules.find((module) => {
        return module.id === data.to.id
    })

    if (fromModule.outputs[data.from.output].isLinked(toModule.inputs[data.to.input])) {
        console.log("HOOKDOWN")
        fromModule.outputs[data.from.output].remove(toModule.inputs[data.to.input])
    } else {
        fromModule.outputs[data.from.output].attach(toModule.inputs[data.to.input])
    }

    // replace it 
    changeRep(fromModule)
}

function buildMenu() {
    var tree = {}
    var dir = fs.readdirSync('./src')
    for (i in dir) {
        tree[dir[i]] = {}
        var subdir = fs.readdirSync('./src/' + dir[i])
        for (j in subdir) {
            // find js files
            if (subdir[j].slice(-3) === '.js') {
                var obj = {}
                obj.path = './src/' + dir[i] + '/' + subdir[j]
                tree[dir[i]][subdir[j].slice(0, -3)] = obj
            }
        }
    }

    return tree
}

// put