mirror of
https://gitlab.dit.htwk-leipzig.de/htwk-software/htwkalender-pwa.git
synced 2025-07-16 09:38:51 +02:00
refactoring and documentation
This commit is contained in:
Elmar Kresse
@ -24,7 +24,7 @@ func addRoutes(app *pocketbase.PocketBase) {
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Method: http.MethodGet,
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Path: "/api/fetchPlans",
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Handler: func(c echo.Context) error {
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return fetch.FetchHTWK(c, app)
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return fetch.GetSeminarEvents(c, app)
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},
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Middlewares: []echo.MiddlewareFunc{
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apis.ActivityLogger(app),
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35
openapi.yml
Normal file
35
openapi.yml
Normal file
@ -0,0 +1,35 @@
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openapi: 3.0.0
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info:
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title: Your API
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version: 1.0.0
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paths:
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/api/fetchPlans:
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get:
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summary: Fetch Seminar Plans
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responses:
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'200':
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description: Successful response
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/api/fetchGroups:
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get:
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summary: Fetch Seminar Groups
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responses:
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'200':
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description: Successful response
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/api/rooms:
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get:
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summary: Get Rooms
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responses:
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'200':
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description: Successful response
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/api/feedURL:
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get:
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summary: Get iCal Feed URL
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responses:
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'200':
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description: Successful response
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/api/feed:
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get:
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summary: Get iCal Feed
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responses:
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'200':
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description: Successful response
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@ -18,27 +18,11 @@ import (
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"time"
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)
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func FetchHTWK(c echo.Context, app *pocketbase.PocketBase) error {
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var seminarGroups []model.SeminarGroup
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//seminarGroupsLabel := []string{
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// "22EIM-MET",
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//}
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func GetSeminarEvents(c echo.Context, app *pocketbase.PocketBase) error {
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seminarGroupsLabel := db.GetAllCourses(app)
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for _, seminarGroupLabel := range seminarGroupsLabel {
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result, getError := getPlanHTML("ws", seminarGroupLabel)
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if getError == nil {
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seminarGroup := parseSeminarGroup(result)
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seminarGroups = append(seminarGroups, seminarGroup)
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}
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}
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//Save SeminarGroups to DB
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print("Saving SeminarGroups to DB...\n")
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seminarGroups := GetSeminarGroupsEventsFromHTML(seminarGroupsLabel)
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collection, dbError := findCollection(app, "events")
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if dbError != nil {
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@ -53,6 +37,25 @@ func FetchHTWK(c echo.Context, app *pocketbase.PocketBase) error {
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return c.JSON(http.StatusOK, seminarGroups)
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}
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func GetSeminarGroupsEventsFromHTML(seminarGroupsLabel []string) []model.SeminarGroup {
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var seminarGroups []model.SeminarGroup
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for _, seminarGroupLabel := range seminarGroupsLabel {
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result, getError := getPlanHTML("ss", seminarGroupLabel)
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if getError == nil {
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seminarGroup := parseSeminarGroup(result)
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seminarGroups = append(seminarGroups, seminarGroup)
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}
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result, getError = getPlanHTML("ws", seminarGroupLabel)
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if getError == nil {
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seminarGroup := parseSeminarGroup(result)
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seminarGroups = append(seminarGroups, seminarGroup)
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}
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}
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return seminarGroups
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}
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func findCollection(app *pocketbase.PocketBase, collectionName string) (*models.Collection, error) {
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collection, dbError := app.Dao().FindCollectionByNameOrId(collectionName)
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return collection, dbError
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@ -237,6 +240,7 @@ func toUtf8(iso88591Buf []byte) string {
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return string(buf)
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}
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// getPlanHTML Get the HTML document from the specified URL
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func getPlanHTML(semester string, matrikel string) (string, error) {
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url := "https://stundenplan.htwk-leipzig.de/" + string(semester) + "/Berichte/Text-Listen;Studenten-Sets;name;" + matrikel + "?template=sws_semgrp&weeks=1-65"
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@ -264,199 +268,3 @@ func getPlanHTML(semester string, matrikel string) (string, error) {
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return toUtf8(body), err
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}
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// Find the first <table> element in the HTML document
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func findFirstTable(node *html.Node) *html.Node {
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if node.Type == html.ElementNode && node.Data == "table" {
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return node
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}
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// Traverse child nodes recursively
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for child := node.FirstChild; child != nil; child = child.NextSibling {
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found := findFirstTable(child)
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if found != nil {
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return found
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}
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}
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return nil
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}
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// Find the first <span> element with the specified class attribute value
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func findFirstSpanWithClass(node *html.Node, classValue string) *html.Node {
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if node.Type == html.ElementNode && node.Data == "span" {
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if hasClassAttribute(node, classValue) {
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return node
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}
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}
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// Traverse child nodes recursively
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for child := node.FirstChild; child != nil; child = child.NextSibling {
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found := findFirstSpanWithClass(child, classValue)
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if found != nil {
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return found
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}
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}
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return nil
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}
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// Check if the specified element has the specified class attribute value
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func hasClassAttribute(node *html.Node, classValue string) bool {
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for _, attr := range node.Attr {
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if attr.Key == "class" && strings.Contains(attr.Val, classValue) {
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return true
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}
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}
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return false
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}
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// Get Tables with days
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func getEventTables(node *html.Node) [][]*html.Node {
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var eventTables [][]*html.Node
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tables := findTables(node)
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// get all tables with events
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for events := range tables {
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rows := findTableRows(tables[events])
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// check that a first row exists
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if len(rows) > 0 {
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rows = rows[1:]
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eventTables = append(eventTables, rows)
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}
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}
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return eventTables
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}
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// Get Tables with days
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func getAllDayLabels(node *html.Node) []string {
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paragraphs := findParagraphs(node)
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var dayArray []string
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for _, p := range paragraphs {
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label := getDayLabel(p)
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if label != "" {
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dayArray = append(dayArray, label)
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}
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}
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return dayArray
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}
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// Find all <p> elements in the HTML document
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func findParagraphs(node *html.Node) []*html.Node {
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var paragraphs []*html.Node
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if node.Type == html.ElementNode && node.Data == "p" {
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paragraphs = append(paragraphs, node)
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}
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for child := node.FirstChild; child != nil; child = child.NextSibling {
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paragraphs = append(paragraphs, findParagraphs(child)...)
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}
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return paragraphs
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}
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// Find all <tr> elements in <tbody>, excluding the first one
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func findTableRows(node *html.Node) []*html.Node {
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var tableRows []*html.Node
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if node.Type == html.ElementNode && node.Data == "tbody" {
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child := node.FirstChild
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for child != nil {
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if child.Type == html.ElementNode && child.Data == "tr" {
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tableRows = append(tableRows, child)
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}
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child = child.NextSibling
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}
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}
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// Traverse child nodes recursively
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for child := node.FirstChild; child != nil; child = child.NextSibling {
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var tableRowElement = findTableRows(child)
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if tableRowElement != nil {
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tableRows = append(tableRows, tableRowElement...)
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}
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}
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if tableRows == nil {
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return []*html.Node{}
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} else {
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return tableRows
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}
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}
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// Find all <p> elements in the HTML document
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func findTables(node *html.Node) []*html.Node {
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var tables []*html.Node
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if node.Type == html.ElementNode && node.Data == "table" {
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tables = append(tables, node)
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}
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for child := node.FirstChild; child != nil; child = child.NextSibling {
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tables = append(tables, findDayTables(child)...)
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}
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return tables
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}
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// Find all <p> elements in the HTML document
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func findDayTables(node *html.Node) []*html.Node {
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var tables []*html.Node
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for child := node.FirstChild; child != nil; child = child.NextSibling {
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tables = append(tables, findDayTables(child)...)
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}
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if node.Type == html.ElementNode && node.Data == "table" && hasClassAttribute(node, "spreadsheet") {
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tables = append(tables, node)
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}
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return tables
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}
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// Get the text content of the specified node and its descendants
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func getDayLabel(node *html.Node) string {
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child := node.FirstChild
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if child != nil {
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if child.Type == html.ElementNode && child.Data == "span" {
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if child.FirstChild != nil {
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return child.FirstChild.Data
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}
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}
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}
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return ""
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}
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// Find all <td> elements in the current <tr>
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func findTableData(node *html.Node) []*html.Node {
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var tableData []*html.Node
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if node.Type == html.ElementNode && node.Data == "tr" {
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child := node.FirstChild
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for child != nil {
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if child.Type == html.ElementNode && child.Data == "td" {
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tableData = append(tableData, child)
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}
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child = child.NextSibling
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}
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}
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return tableData
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}
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func getTextContent(node *html.Node) string {
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var textContent string
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if node.Type == html.TextNode {
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textContent = node.Data
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}
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for child := node.FirstChild; child != nil; child = child.NextSibling {
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textContent += getTextContent(child)
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}
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return textContent
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}
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@ -85,6 +85,5 @@ func parseSeminarGroups(result string) []model.SeminarGroup {
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}
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}
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}
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return seminarGroups
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}
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202
service/fetch/htmlParsingFunctions.go
Normal file
202
service/fetch/htmlParsingFunctions.go
Normal file
@ -0,0 +1,202 @@
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package fetch
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import (
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"golang.org/x/net/html"
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"strings"
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)
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// Find the first <table> element in the HTML document
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func findFirstTable(node *html.Node) *html.Node {
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if node.Type == html.ElementNode && node.Data == "table" {
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return node
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}
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// Traverse child nodes recursively
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for child := node.FirstChild; child != nil; child = child.NextSibling {
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found := findFirstTable(child)
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if found != nil {
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return found
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}
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}
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return nil
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}
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// Find the first <span> element with the specified class attribute value
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func findFirstSpanWithClass(node *html.Node, classValue string) *html.Node {
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// Check if the current node is a <span> element with the specified class attribute value
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if node.Type == html.ElementNode && node.Data == "span" {
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if hasClassAttribute(node, classValue) {
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return node
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}
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}
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// Traverse child nodes recursively
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for child := node.FirstChild; child != nil; child = child.NextSibling {
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found := findFirstSpanWithClass(child, classValue)
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if found != nil {
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return found
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}
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}
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return nil
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}
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// Check if the specified element has the specified class attribute value
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func hasClassAttribute(node *html.Node, classValue string) bool {
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for _, attr := range node.Attr {
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if attr.Key == "class" && strings.Contains(attr.Val, classValue) {
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return true
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}
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}
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return false
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}
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// Get Tables with days
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func getEventTables(node *html.Node) [][]*html.Node {
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var eventTables [][]*html.Node
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tables := findTables(node)
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// get all tables with events
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for events := range tables {
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rows := findTableRows(tables[events])
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// check that a first row exists
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if len(rows) > 0 {
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rows = rows[1:]
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eventTables = append(eventTables, rows)
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}
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}
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return eventTables
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}
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// Get Tables with days
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func getAllDayLabels(node *html.Node) []string {
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paragraphs := findParagraphs(node)
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var dayArray []string
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for _, p := range paragraphs {
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label := getDayLabel(p)
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if label != "" {
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dayArray = append(dayArray, label)
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}
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}
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return dayArray
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}
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// Find all <p> elements in the HTML document
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func findParagraphs(node *html.Node) []*html.Node {
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var paragraphs []*html.Node
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if node.Type == html.ElementNode && node.Data == "p" {
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paragraphs = append(paragraphs, node)
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}
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for child := node.FirstChild; child != nil; child = child.NextSibling {
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paragraphs = append(paragraphs, findParagraphs(child)...)
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}
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return paragraphs
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}
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// Find all <tr> elements in <tbody>, excluding the first one
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func findTableRows(node *html.Node) []*html.Node {
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var tableRows []*html.Node
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if node.Type == html.ElementNode && node.Data == "tbody" {
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child := node.FirstChild
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for child != nil {
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if child.Type == html.ElementNode && child.Data == "tr" {
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tableRows = append(tableRows, child)
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}
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child = child.NextSibling
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}
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}
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// Traverse child nodes recursively
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for child := node.FirstChild; child != nil; child = child.NextSibling {
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var tableRowElement = findTableRows(child)
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if tableRowElement != nil {
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tableRows = append(tableRows, tableRowElement...)
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}
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}
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// check if tableRows is nil
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if tableRows == nil {
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return []*html.Node{}
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} else {
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return tableRows
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}
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}
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// Find all <p> elements in the HTML document
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func findTables(node *html.Node) []*html.Node {
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var tables []*html.Node
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if node.Type == html.ElementNode && node.Data == "table" {
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tables = append(tables, node)
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}
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for child := node.FirstChild; child != nil; child = child.NextSibling {
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tables = append(tables, findDayTables(child)...)
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}
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return tables
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}
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// Find all <p> elements in the HTML document
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func findDayTables(node *html.Node) []*html.Node {
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var tables []*html.Node
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for child := node.FirstChild; child != nil; child = child.NextSibling {
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tables = append(tables, findDayTables(child)...)
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}
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if node.Type == html.ElementNode && node.Data == "table" && hasClassAttribute(node, "spreadsheet") {
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tables = append(tables, node)
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}
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return tables
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}
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// Get the text content of the specified node and its descendants
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func getDayLabel(node *html.Node) string {
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child := node.FirstChild
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if child != nil {
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if child.Type == html.ElementNode && child.Data == "span" {
|
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if child.FirstChild != nil {
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return child.FirstChild.Data
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}
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}
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}
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return ""
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}
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// Find all <td> elements in the current <tr>
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func findTableData(node *html.Node) []*html.Node {
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var tableData []*html.Node
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if node.Type == html.ElementNode && node.Data == "tr" {
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child := node.FirstChild
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for child != nil {
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if child.Type == html.ElementNode && child.Data == "td" {
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tableData = append(tableData, child)
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}
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child = child.NextSibling
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}
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}
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return tableData
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}
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// Get the text content of the specified node and its descendants
|
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func getTextContent(node *html.Node) string {
|
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var textContent string
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if node.Type == html.TextNode {
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textContent = node.Data
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}
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for child := node.FirstChild; child != nil; child = child.NextSibling {
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textContent += getTextContent(child)
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}
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return textContent
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}
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Reference in New Issue
Block a user