From d0975a6e7ee57de4debda94e823011d813fbf4a1 Mon Sep 17 00:00:00 2001
From: Furkan Sahin <furkan-dev@proton.me>
Date: Sun, 5 Sep 2021 21:39:24 -0500
Subject: Initial rewrite in svelte

---
 src/util/error.ts  |   6 +++
 src/util/parser.ts | 107 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 113 insertions(+)
 create mode 100644 src/util/error.ts
 create mode 100644 src/util/parser.ts

(limited to 'src/util')

diff --git a/src/util/error.ts b/src/util/error.ts
new file mode 100644
index 0000000..5380849
--- /dev/null
+++ b/src/util/error.ts
@@ -0,0 +1,6 @@
+export class PeerTeacherImportError extends Error {
+    constructor(message) {
+        super(message);
+        this.name = "PeerTeacherImportError";
+    }
+}
\ No newline at end of file
diff --git a/src/util/parser.ts b/src/util/parser.ts
new file mode 100644
index 0000000..6d706d7
--- /dev/null
+++ b/src/util/parser.ts
@@ -0,0 +1,107 @@
+import EventInfo from "../models/EventInfo";
+import Lab from "../models/Lab";
+import PeerTeacher from "../models/PeerTeacher";
+import { PeerTeacherImportError } from "./error";
+
+interface LabSchedule {
+    data: {
+        courseNumber: string,
+        sequenceNumber: string,
+        meetingsFaculty: {
+            meetingTime: {
+                beginTime: string | null,
+                building: string,
+                endTime: string | null,
+                friday: boolean,
+                meetingType: string,
+                monday: boolean,
+                room: string,
+                thursday: boolean,
+                tuesday: boolean,
+                wednesday: boolean
+            }
+        }[]
+    }[]
+};
+
+/**
+ * Parses a peer teacher schedule
+ * @param schedule The schedule to parse
+ * @returns A peer teacher
+ */
+export function parsePTSchedule(schedule: string) {
+    // namePatter: <firstname> <lastname> <uin>
+    const namePattern = /^(.*)\s(.*)\s(\d{9})/;
+    // eventPattern (24hr time): MTWRF hh:mm - hh:mm
+    const eventPattern = /^(M?T?W?R?F?)\s(\d{1,2}:\d{2})\s?-\s?(\d{1,2}:\d{2})/;
+    const lines = schedule.split("\n").filter(line => line.trim());
+
+    const nameLine = lines.find(line => line.match(namePattern));
+    if(nameLine === undefined) {
+        throw new PeerTeacherImportError(`No peer teacher in schedule`);
+    }
+
+    const [, firstname, lastname, uin] = nameLine.match(namePattern) as RegExpMatchArray;
+    const peerTeacher = new PeerTeacher(uin, firstname, lastname);
+
+    const events = lines
+        .filter(line => line.match(eventPattern))
+        .map(line => {
+            let [, days, start, end] = line.match(eventPattern) as RegExpMatchArray;
+            start = start.replace(":", "");
+            end = end.replace(":", "");
+            return new EventInfo(days, start, end);
+        });
+    
+    peerTeacher.events = events;
+    return peerTeacher;
+}
+
+/**
+ * Parses the course schedule into labs attended by PTs
+ * @param schedule The course schedule object from Howdy
+ * @returns An array of labs
+ */
+export function parseLabSchedule(schedule: LabSchedule) {
+    const taughtCourses = ['110', '111', '121', '206', '221', '312', '313', '315'];
+    const results: Lab[] = [];
+
+    const courses = schedule.data;
+    for(const course of courses) {
+        if(!taughtCourses.includes(course.courseNumber)) {
+            continue;
+        }
+
+        for(const meeting of course.meetingsFaculty) {
+            const { meetingTime } = meeting;
+
+            if(meetingTime.meetingType !== "LAB") {
+                continue;
+            }
+
+            let days = "";
+            days += meetingTime.monday ? 'M' : '';
+            days += meetingTime.tuesday ? 'T' : '';
+            days += meetingTime.wednesday ? 'W' : '';
+            days += meetingTime.thursday ? 'R' : '';
+            days += meetingTime.friday ? 'F' : '';
+
+            const start = meetingTime.beginTime === null ? -1 : meetingTime.beginTime;
+            const end = meetingTime.endTime === null ? -1 : meetingTime.endTime;
+            const { courseNumber, sequenceNumber } = course;
+            const { building, room} = meetingTime;
+
+            results.push(
+                new Lab(
+                    courseNumber, 
+                    sequenceNumber, 
+                    new EventInfo(days, start, end), 
+                    building, 
+                    room
+                )
+            );
+        }
+    }
+
+    return results;
+}
\ No newline at end of file
-- 
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