Broken shift parsing

Better WIP

1 files changed, 162 insertions, 22 deletions

diff --git a/server.js b/server.js
index 9d641eb..d0792c5 100644
--- a/server.js
+++ b/server.js
@@ -2,21 +2,83 @@ const http	= require("http");
 const fs	= require("fs");
 const url	= require("url");
 
-mainPage = "./index.html";
-allowedPaths = [mainPage, "./index.css"];
-path404 = "./404/index.html";
+let maxshifts = Infinity;
 
-shifts = [
-	//1:
-	"Ruokailuvuoro 1",
-	//2:
-	"Ruokailuvuoro 2",
-	//3:
-	"Ruokailuvuoro 3"
-];
+function init()
+{
+	const mainPage = "./index.html";
+	const allowedPaths = [mainPage, "./index.css"];
+	const path404 = "./404/index.html";
+
+	const weekdays = [undefined, "MAANANTAI", "TIISTAI", "KESKIVIIKKO", "TORSTAI", "PERJANTAI", undefined];
+
+	shifts = [
+		//1:
+		"Ruokailuvuoro 1",
+		//2:
+		"Ruokailuvuoro 2",
+		//3:
+		"Ruokailuvuoro 3"
+	];
+
+	/*openFile("shifts.txt").then(data =>
+	{
+		let shifts = 0;
+		let i = 0;
+		do
+		{
+			i = getToLineStartingWith(data.toString("utf-8"), i + 1, "RUOKAILUVUORO");
+			shifts++;
+		} while (i !== -1)
+		maxshifts = shifts / 5; // 5 = number of days
+	});*/
+	function server(req, res)
+	{
+		let q = url.parse(req.url, true); //true?
+		let path = "." + q.pathname;
+		if (path == "./")
+			path = "./index.html";
+
+		console.log(path);
 
+		if (!allowedPaths.includes(path))
+				path = path404;
 
-http.createServer((req, res) =>
+		switch(path)
+		{
+			case mainPage:
+				buildMain(q.query, path, maxshifts).then(
+					(data) =>
+					{
+						res.write(data);
+						res.end();
+					}
+				);
+				break;
+			case path404:
+				build404(path, q.pathname).then(
+					data =>
+					{
+						res.write(data);
+						res.end();
+					}
+				);
+				break;
+			default:
+				buildDefault(path).then(
+					data =>
+					{
+						res.write(data);
+						res.end();
+					}
+				);
+		}
+	}
+
+	http.createServer(server).listen(8080);
+}
+
+function server(req, res)
 {
 	let q = url.parse(req.url, true); //true?
 	let path = "." + q.pathname;
@@ -31,7 +93,7 @@ http.createServer((req, res) =>
 	switch(path)
 	{
 		case mainPage:
-			buildMain(q.query, path).then(
+			buildMain(q.query, path, maxshifts).then(
 				(data) =>
 				{
 					res.write(data);
@@ -57,7 +119,7 @@ http.createServer((req, res) =>
 				}
 			);
 	}
-}).listen(8080)
+}
 
 function openFile(path)
 {
@@ -73,7 +135,7 @@ function openFile(path)
 	});
 }
 
-function buildMain(query, path)
+function buildMain(query, path, maxshifts)
 {
 	return new Promise((resolve, reject) =>
 	{
@@ -83,7 +145,7 @@ function buildMain(query, path)
 				data_string = data.toString("utf-8");
 				if (query.index === undefined)
 					resolve(data_string.replace("\\(result\\)", ""));
-				resolve(data_string.replace("\\(result\\)", shifts[parseshift(query) - 1]));
+				resolve(data_string.replace("\\(result\\)", shifts[parseshift(query, maxshifts) - 1]));
 			}
 		);
 	});
@@ -117,18 +179,57 @@ function buildDefault(path)
 	});
 }
 
-function parseshift(index)
+function parseshift(index, maxshifts)
 {
-	//get index type
-	is_teacher = isNaN(parseInt(index[index.length - 1]));
-	is_course = !is_teacher;
+	/*//get index type
+	let is_teacher = isNaN(parseInt(index[index.length - 1]));
+	let is_course = !is_teacher;
+
+	//get day of week
+	const d = new Date();
+	let day = weekdays[d.getDay()];
+	if (day === undefined)
+		day = weekdays[1];
+
 	//read shiftfile
 	openFile("shifts.txt").then(
-		data =>  {}
+		data =>
+		{
+			data = data.toString("utf-8");
+			// get to the position of the day
+			let i = getToLineStartingWith(data, 0, day);
+			if (i === -1)
+				return -1;
+
+			// iterate through shifts
+			let shift = "";
+			let shifts = 0;
+			while (shifts < maxshifts) // infinite loop if maxshift is infinity, FIX!
+			{
+				i = getToLineStartingWith(data, i, "RUOKAILUVUORO");
+				let nextLineStart = getNextChar(data, i, "\n");
+				shift = data.substring(i, nextLineStart);
+
+				// Get to the line with the teachers & courses
+				i = nextLineStart;
+				while (!((nextLineStart - i) > 2))
+				{
+					i = nextLineStart;
+					nextLineStart = getNextChar(data, i + 1, "\n");
+				}
+				i++;
+				// Find whether the course is in the line or not
+				let parsed_line = data.substring(i + 1, nextLineStart).replaceAll(",", "");
+				if (findExpression(parsed_line, index, i) !== -1)
+					return shift;
+				shifts++;
+			}
+			return -1;
+		}
 	);
 	//iterate over lines, search for day
 	//iterate shifts for course / teacher
-	//return the shift number
+	//return the shift number*/
 	return 1;
 }
 
@@ -141,3 +242,42 @@ function getCharAmount(s, c)
 	}
 	return n;
 }
+
+function getNextChar(s, i, c)
+{
+	for (; i < s.length; i++)
+	{
+		if (s[i] === c)
+			return i;
+	}
+	return -1;
+}
+
+function getToLineStartingWith(s, start, ss)
+{
+	let i = start;
+	do
+	{
+		if (s.substr(i, ss.length) === ss)
+			break;
+		i = getNextChar(s, i, "\n") + 1;
+	} while(i !== -1)
+	
+	if (i === -1)
+		return -1;
+	return i;
+
+}
+
+function findExpression(data, expr, start = 0)
+{
+    if (Number.isInteger(start) && (start < 0))
+        throw new TypeError("Start must be a positive integer!");
+    while ((data.substr(start, expr.length) !== expr) && (start + expr.length < data.length))
+        start++;
+    if (data.substr(start, expr.length) !== expr)
+        return -1;
+    return start;
+}
+
+init();