const fs = require("fs")

let points = {}
let rects = {}
let edges = []
let mode, name, x, y, w, h, cx, cy, rx, ry, x2, y2

function add_point(x, y) {
	if (name in points)
		points[name].push([x,y])
	else
		points[name] = [ [x,y] ]
}

function add_rect(x, y, w, h) {
	if (name in rects)
		rects[name].push([x,y,x+w,y+h])
	else
		rects[name] = [ [x,y,x+w,y+h] ]
}

function flush() {
	if (mode === 'path') {
		edges.push([ x, y, x2, y2 ])
	}
	if (mode === 'rect') {
		if (name.startsWith("$"))
			add_rect(x, y, w, h)
		else
			add_point( x + w/2, y + h/2 )
	}
	if (mode === 'circle') {
		add_point( cx, cy )
	}
	x = y = x2 = y2 = w = h = cx = cy = rx = ry = 0
}

function parse_path_data(path) {
	let cx = 0
	let cy = 0
	let abs = 0
	for (let i = 0; i < path.length;) {
		switch (path[i]) {
		case 'M':
			x = cx = Number(path[i+1])
			y = cy = Number(path[i+2])
			i += 3
			abs = true
			break
		case 'm':
			x = cx = cx + Number(path[i+1])
			y = cy = cy + Number(path[i+2])
			i += 3
			abs = false
			break
		case 'C':
			x2 = cx = Number(path[i+5])
			y2 = cy = Number(path[i+6])
			i += 7
			abs = true
			break
		case 'L':
			i += 1
			abs = true
			break
		case 'H':
			x2 = cx = Number(path[i+1])
			i += 2
			abs = true
			break
		case 'V':
			y2 = cy = Number(path[i+1])
			i += 2
			abs = true
			break
		case 'c':
			x2 = cx = cx + Number(path[i+5])
			y2 = cy = cy + Number(path[i+6])
			i += 7
			break
		case 'l':
			i += 1
			abs = false
			break
		case 'h':
			x2 = cx = cx + Number(path[i+1])
			i += 2
			abs = false
			break
		case 'v':
			y2 = cy = cy + Number(path[i+1])
			i += 2
			abs = false
			break
		default:
			if (abs) {
				x2 = cx = Number(path[i+0])
				y2 = cy = Number(path[i+1])
			} else {
				x2 = cx = cx + Number(path[i+0])
				y2 = cy = cy + Number(path[i+1])
			}
			i += 2
			break
		}
	}
}

for (let line of fs.readFileSync("tools/layout.svg", "utf-8").split("\n")) {
	line = line.trim()
	if (line.startsWith("<rect")) {
		flush()
		mode = "rect"
		x = y = w = h = 0
	}
	else if (line.startsWith("<ellipse") || line.startsWith("<circle")) {
		flush()
		mode = "circle"
		cx = cy = rx = ry = 0
	}
	else if (line.startsWith("<path")) {
		flush()
		mode = "path"
	}
	else if (line.startsWith("<g")) {
		flush()
		mode = "g"
	}
	else if (line.startsWith('x="'))
		x = (Number(line.split('"')[1]))
	else if (line.startsWith('y="'))
		y = (Number(line.split('"')[1]))
	else if (line.startsWith('width="'))
		w = (Number(line.split('"')[1]))
	else if (line.startsWith('height="'))
		h = (Number(line.split('"')[1]))
	else if (line.startsWith('cx="'))
		cx = (Number(line.split('"')[1]))
	else if (line.startsWith('cy="'))
		cy = (Number(line.split('"')[1]))
	else if (line.startsWith('r="'))
		rx = ry = (Number(line.split('"')[1]))
	else if (line.startsWith('rx="'))
		rx = (Number(line.split('"')[1]))
	else if (line.startsWith('ry="'))
		ry = (Number(line.split('"')[1]))
	else if (line.startsWith('inkscape:label="') && mode === "g")
		name = line.split('"')[1]
	else if (line.startsWith('d="'))
		parse_path_data(line.split('"')[1].split(/[ ,]/))
}

flush()

let labels = []

// names.txt is layout.svg cleaned up by svgo and filtered to only include text nodes
for (let line of fs.readFileSync("tools/names.txt", "utf-8").split("\n")) {
	let m = line.match(/<tspan x="([\d.]*)" y="([\d.]*)">([^<]*)</)
	if (m)
		labels.push({x: Number(m[1]), y: Number(m[2]), name: m[3]})
}

function find_closest_node(list, x, y) {
	let nd = Infinity, nn = null

	for (let n of list) {
		let d = Math.hypot(n.x - x, n.y - y)
		if (d < nd) {
			nd = d
			nn = n
		}
	}

	if (!nn) {
		console.log("NOT FOUND", x, y)
		return [ null, 0 ]
	}

	return [ nn, nd ]
}

function find_enclosing_rect(list, x, y) {
	for (let [x1, y1, x2, y2] of list) {
		if (x >= x1 && x <= x2)
			if (y >= y1 && y <= y2)
				return true
	}
	return false
}

// FIND and label all points!
let all_labels = labels.slice()
let out = {}
for (let key in points) {
	out = {}
	for (let [x, y] of points[key]) {
		let [ node, dist ] = find_closest_node(labels, x, y)
		if (dist > 10) {
			console.log(key,x,y, dist)
		}
		if (node) {
			if (node.name in out)
				console.log("DUPLICATE", node.name, x, y, out[node.name])
			labels = labels.filter(x => x !== node)
			let suit = "UNKNOWN"
			if (find_enclosing_rect(rects.$CLUBS, x, y))
				suit = "clubs"
			else if (find_enclosing_rect(rects.$HEARTS, x, y))
				suit = "hearts"
			else if (find_enclosing_rect(rects.$DIAMONDS, x, y))
				suit = "diamonds"
			else if (find_enclosing_rect(rects.$SPADES, x, y))
				suit = "spades"
			else
				console.log("NOT ASSIGNED SUIT", x, y)
			out[node.name] = [x, y, dist, suit]
		} else {
			let [ dupname, dupdist ] = find_closest_node(all_labels, x, y)
			console.log("ALREADY USED", dupname, dupdist, x, y, "OLD", out[dupname])
		}
	}
}