feat: code

src/client.ts

@@ -0,0 +1,117 @@
+import Undici from 'undici'
+import { DisplayDate, Homework, User } from '../types'
+import { API_BASE, BASE_URL } from './consts'
+
+export class ClasschartsClient {
+    public studentCode = ''
+    public dateOfBirth = ''
+    public studentId = 0
+    public studentName = ''
+    private authCookies: Array<string> | undefined
+    private sessionId = ''
+    constructor(studentCode: unknown, dateOfBirth: unknown) {
+        this.studentCode = String(studentCode)
+        this.dateOfBirth = String(dateOfBirth)
+    }
+    async init() {
+        const formData = new URLSearchParams()
+        if (!this.studentCode) throw new Error('Student Code not inputted')
+        formData.append('_method', 'POST')
+        formData.append('code', this.studentCode.toUpperCase())
+        formData.append('dob', this.dateOfBirth)
+        formData.append('remember_me', '1')
+        formData.append('recaptcha-token', 'no-token-avaliable')
+        const request = await Undici.request(BASE_URL + '/student/login', {
+            method: 'POST',
+            body: formData.toString(),
+            headers: {
+                'Content-Type': 'application/x-www-form-urlencoded',
+            },
+        })
+        if (request.statusCode != 302 || !request.headers['set-cookie'])
+            throw new Error('Unauthenticated: Classcharts returned an error')
+        let cookies = request.headers['set-cookie']
+        for (let i = 0; i < cookies.length; i++) {
+            cookies[i] = cookies[i].substring(0, cookies[i].indexOf(';'))
+        }
+        this.authCookies = cookies
+        let sessionID: any = decodeURI(cookies[2])
+            .replace(/%3A/g, ':')
+            .replace(/%2C/g, ',')
+        sessionID = JSON.parse(
+            sessionID.substring(sessionID.indexOf('{'), sessionID.length)
+        )
+        this.sessionId = sessionID.session_id
+        const user = await this.getStudentInfo()
+        this.studentId = user.id
+        this.studentName = user.name
+    }
+
+    /**
+     *
+     * @returns {User}
+     */
+    async getStudentInfo(): Promise<User> {
+        if (!this.authCookies) throw new Error('Not authenticated')
+        const request = await Undici.request(API_BASE + '/ping', {
+            method: 'POST',
+            body: 'include_date=true',
+            headers: {
+                'Content-Type': 'application/x-www-form-urlencoded',
+                Cookie: this.authCookies.join(';'),
+                authorization: 'Basic ' + this.sessionId,
+            },
+        })
+        const data = await request.body.json()
+        return data.data?.user
+    }
+    /**
+     * Gets all the homework from
+     * @param displayDate {DisplayDate}
+     * @param fromDate
+     * @param toDate
+     * @returns {Array<Homework>}
+     */
+    async listHomeworks(
+        displayDate: DisplayDate,
+        fromDate: string,
+        toDate: string
+    ): Promise<Array<Homework>> {
+        if (!this.authCookies) throw new Error('Not authenticated')
+        const params = new URLSearchParams()
+        params.append('display_date', String(displayDate))
+        fromDate && params.append('from', String(fromDate))
+        toDate && params.append('to', String(toDate))
+        const request = await Undici.request(
+            API_BASE + '/homeworks/' + this.studentId + '?' + params.toString(),
+            {
+                method: 'GET',
+                headers: {
+                    Cookie: this.authCookies.join(';'),
+                    authorization: 'Basic ' + this.sessionId,
+                },
+            }
+        )
+        let responseJSON
+        try {
+            responseJSON = await request.body.json()
+        } catch (err) {
+            throw new Error('Invalid JSON response, check your dates')
+        }
+
+        if (responseJSON.success == 0) {
+            throw new Error(responseJSON.error)
+        }
+        let data: Array<Homework> = responseJSON?.data
+        for (let i = 0; i < data.length; i++) {
+            // homework.lesson.replace(/\\/g, '')
+            data[i].description = data[i].description.replace(
+                /(<([^>]+)>)/gi,
+                ''
+            )
+            data[i].description = data[i].description.replace(/&nbsp;/g, '')
+            data[i].description = data[i].description.trim()
+        }
+        return data
+    }
+}