let svg = document.querySelector("svg");

let nods = document.createElementNS(svgNamespace, 'g');
let arrows = document.createElementNS(svgNamespace, 'g');

svg.appendChild(arrows);
svg.appendChild(nods);

class Edge {
    renderedElement;
    end;
    trans;
    inEdge;
    dimension = 1;
    constructor(end, trans, inEdge = true) {
        this.end = end;
        this.trans = trans;
        this.inEdge = inEdge;
        this.renderedElement = inEdge ? new SVGArrow(end, trans) : new SVGArrow(trans, end);
        this.renderedElement.appendIt(arrows);
        end.updateList.push(this);
    }
    canSuck() {
        return this.end.marks >= this.dimension;
    }
    suck() {
        this.end.marks -= this.dimension;
        this.end.updatePoints();
    }
    canPush() {
        return this.end.capacity >= this.end.marks + this.dimension;
    }
    push() {
        this.end.marks += this.dimension;
        this.end.updatePoints();
    }
    updatePosition() {
        this.renderedElement.updatePosition();
    }
}

class Node {
    renderedElement;
    x = 0;
    y = 0;
    name;
    capacity = 1;
    marks = 0;

    updateList = [];

    constructor(name, x, y) {
        this.name = name;
        this.x = x;
        this.y = y;
        this.renderedElement = new SVGNode(this);
        this.renderedElement.appendIt(nods);
    }

    updatePoints() {
        this.renderedElement.setMarks(this.marks, this.capacity);
    }

    updatePosition(x, y) {
        this.x = x;
        this.y = y;
        this.renderedElement.translate(x, y);
        for (const elem of this.updateList) {
            elem.updatePosition();
        }
    }
}

class Transition {
    renderedElement;
    name = "noname";
    inEdges = [];
    outEdges = [];
    x;
    y;
    constructor(name, x, y) {
        this.name = name;
        this.x = x;
        this.y = y;
        this.renderedElement = new SVGTRansition(this);
        this.renderedElement.appendIt(nods);
    }
    canFire() {
        for (const inE of this.inEdges) {
            if (!inE.canSuck()) {
                this.renderedElement.setCanFire(false);
                return false;
            }
        }
        for (const outE of this.outEdges) {
            if (!outE.canPush()) {
                this.renderedElement.setCanFire(false);
                return false;
            }
        }
        this.renderedElement.setCanFire(true);
        return true;
    }
    fire() {
        if (!this.canFire()) return false;
        for (const inE of this.inEdges) {
            inE.suck();
        }
        for (const outE of this.outEdges) {
            outE.push();
        }
        return true;
    }
    updatePosition(x, y) {
        this.x = x;
        this.y = y;
        this.renderedElement.translate(x, y);
        for (const inE of this.inEdges) {
            inE.updatePosition();
        }
        for (const outE of this.outEdges) {
            outE.updatePosition();
        }
    }
}

let transitions = [];
let nodes = [];

function loop() {
    for (const trans of transitions) {
        console.log(trans.name, trans.fire());
    }
    update();
}

function update() {
    for (const nod of nodes) {
        nod.updatePoints();
    }
    for (const trans of transitions) {
        trans.canFire();
    }
}

window.onresize = () => {
    svg.setAttribute("viewBox", `0 0 ${window.innerWidth} ${window.innerHeight}`);
}
window.onresize();


let n1 = new Node("n1", 100, 100);
let n2 = new Node("n2", 100, 300);
let t1 = new Transition("t1", 100, 200);
t1.inEdges.push(new Edge(n1, t1, true))
t1.outEdges.push(new Edge(n2, t1, false));

nodes.push(n1, n2);
transitions.push(t1);