reorganize functions to aplus-related and canvas-related.

aplus.go

@@ -0,0 +1,76 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+)
+
+func get_aplus(token string, link string, client http.Client) string {
+	resp, err := client.Get(link)
+
+	if err != nil {
+		fmt.Println("Error performing GET request to initial link.")
+	}
+	defer resp.Body.Close()
+	body, _ := io.ReadAll(resp.Body)
+
+	var aplus Aplus
+	json.Unmarshal(body, &aplus)
+
+	return aplus.URL
+}
+
+func get_form_from_request_body(req_body []byte) string {
+	body_str := string(req_body)
+	form_start := strings.Index(body_str, "<form")
+	form_end := strings.Index(body_str, "</form>") + 7
+	form_html := req_body[form_start:form_end]
+
+	return string(form_html)
+}
+
+// parse_form extracts form fields and values from the given HTML form string.
+func parse_form(form_html string) url.Values {
+	form_values := make(url.Values)
+	inputs := strings.Split(form_html, "<input")
+
+	for _, input := range inputs {
+		// Extract field name and value
+		name := extract_attribute(input, "name")
+		value := extract_attribute(input, "value")
+
+		if name != "" {
+			form_values.Add(name, value)
+		}
+	}
+
+	return form_values
+}
+
+func extract_attribute(input string, attribute string) string {
+	start := strings.Index(input, attribute+"=\"")
+	if start == -1 {
+		start = strings.Index(input, attribute+"='")
+	}
+
+	if start == -1 {
+		return ""
+	}
+
+	start += len(attribute) + 2
+
+	end := strings.Index(input[start:], "\"")
+	if end == -1 {
+		end = strings.Index(input[start:], "'")
+	}
+
+	if end == -1 {
+		return ""
+	}
+
+	return input[start : start+end]
+}

canvas.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+)
+
+func initialize() {
+	base_link = "https://floridapolytechnic.instructure.com/api/v1"
+	token = os.Getenv("CANVAS_API_KEY")
+}
+
+func get_courses(token string, link string, client http.Client) []CanvasCourse {
+	resp, err := client.Get(link)
+	if err != nil {
+		fmt.Println("Error performing GET request to get courses.")
+	}
+	defer resp.Body.Close()
+	body, _ := io.ReadAll(resp.Body)
+
+	var canvas_courses []CanvasCourse
+	err2 := json.Unmarshal(body, &canvas_courses)
+	if err2 != nil {
+		fmt.Println(err2)
+		return nil
+	}
+
+	return canvas_courses
+}
+
+// Need to change this to grab both ID and name, return as pairs.
+func get_course_id_name_pair(canvas_courses []CanvasCourse) []uint64 {
+	var courses []uint64
+
+	for _, course := range canvas_courses {
+		courses = append(courses, course.ID%10000)
+	}
+	return courses
+}
+
+/*
+func select_course() int {
+	// course selection by user happens below
+	favorites := fmt.Sprintf("%s/users/self/favorites/courses?access_token=%s&per_page=100", base_link, token)
+	all_courses := fmt.Sprintf("%s/courses?access_token=%s&per_page=100", base_link, token)
+	var canvas_courses []CanvasCourse
+	canvas_courses = get_courses(token, favorites, client)
+	var course_ids []uint64
+	course_ids = get_course_ids(canvas_courses)
+	//selected := 1 // course_ids[selected]
+	// course selection by user happens above
+	return 0
+}
+*/

funcs.go

@@ -1,128 +0,0 @@
-package main
-
-import (
-	"encoding/json"
-	"fmt"
-	"io"
-	"net/http"
-	"net/url"
-	"strings"
-)
-
-/*
-func get_courses(token string, link string, client http.Client) []CanvasCourse {
-	resp, err := client.Get(link)
-	if err != nil {
-		fmt.Println("Error performing GET request to get courses.")
-	}
-	defer resp.Body.Close()
-	body, err := io.ReadAll(resp.Body)
-
-	if err != nil {
-		fmt.Println("Error trying to read html body for courses.")
-	}
-
-	var canvas_courses []CanvasCourse
-	err2 := json.Unmarshal(body, &canvas_courses)
-	if err2 != nil {
-		fmt.Println(err2)
-		return nil
-	}
-
-	return canvas_courses
-}
-
-// Need to change this to grab both ID and name, return as pairs.
-func get_course_id_name_pair(canvas_courses []CanvasCourse) []uint64 {
-	var courses []uint64
-
-	for _, course := range canvas_courses {
-		courses = append(courses, course.ID%10000)
-	}
-	return courses
-}
-
-func select_course() int {
-	// course selection by user happens below
-	//favorites := fmt.Sprintf("%s/users/self/favorites/courses?access_token=%s&per_page=100", base_link, token)
-	//all_courses := fmt.Sprintf("%s/courses?access_token=%s&per_page=100", base_link,token)
-	// var canvas_courses []CanvasCourse
-	//canvas_courses = get_courses(token, favorites, client)
-	//var course_ids []uint64
-	//course_ids = get_course_ids(canvas_courses)
-	//selected := 1 // course_ids[selected]
-	// course selection by user happens above
-	return 0
-}
-*/
-
-func get_aplus(token string, link string, client http.Client) string {
-	resp, err := client.Get(link)
-
-	if err != nil {
-		fmt.Println("Error performing GET request to initial link.")
-	}
-	defer resp.Body.Close()
-	body, err := io.ReadAll(resp.Body)
-
-	if err != nil {
-		fmt.Println("Error reading body of initial aplus html response " +
-			"which is supposed to contain a one-time link for getting the form.")
-	}
-
-	var aplus Aplus
-	json.Unmarshal(body, &aplus)
-
-	return aplus.URL
-}
-
-func get_form_from_request_body(req_body []byte) string {
-	body_str := string(req_body)
-	form_start := strings.Index(body_str, "<form")
-	form_end := strings.Index(body_str, "</form>") + 7
-	form_html := req_body[form_start:form_end]
-
-	return string(form_html)
-}
-
-// parse_form extracts form fields and values from the given HTML form string.
-func parse_form(form_html string) url.Values {
-	form_values := make(url.Values)
-	inputs := strings.Split(form_html, "<input")
-
-	for _, input := range inputs {
-		// Extract field name and value
-		name := extract_attribute(input, "name")
-		value := extract_attribute(input, "value")
-
-		if name != "" {
-			form_values.Add(name, value)
-		}
-	}
-
-	return form_values
-}
-
-func extract_attribute(input string, attribute string) string {
-	start := strings.Index(input, attribute+"=\"")
-	if start == -1 {
-		start = strings.Index(input, attribute+"='")
-	}
-
-	if start == -1 {
-		return ""
-	}
-
-	start += len(attribute) + 2
-
-	end := strings.Index(input[start:], "\"")
-	if end == -1 {
-		end = strings.Index(input[start:], "'")
-	}
-
-	if end == -1 {
-		return ""
-	}
-
-	return input[start : start+end]
-}

main.go

@@ -4,9 +4,11 @@ import (
 	"fmt"
 	"io"
 	"net/http"
-	"os"
 )
 
+var base_link string
+var token string
+
 func main() {
 	client := http.Client{
 		CheckRedirect: func(req *http.Request, via []*http.Request) error {
@@ -15,8 +17,7 @@ func main() {
 		},
 	}
 
-	base_link := "https://floridapolytechnic.instructure.com/api/v1"
+	initialize()
-	token := os.Getenv("CANVAS_API_KEY")
 
 	// select_course()
 
@@ -30,11 +31,7 @@ func main() {
 	}
 
 	defer resp.Body.Close()
-	body, err := io.ReadAll(resp.Body)
+	body, _ := io.ReadAll(resp.Body)
-
-	if err != nil {
-		fmt.Println("Error reading body of initial aplus html response.")
-	}
 
 	form_str := get_form_from_request_body(body)
 	fmt.Println(form_str)
@@ -62,8 +59,8 @@ func main() {
 	fmt.Println(req)
 
 	// we need to submit the above post request correctly in order to submit this request.
-	//resp, err = client.Get("https://floridapoly.aplusattendance.com/canvas/student/?canvasCourse=7329&doStudentAuth=true")
+	//resp, _ = client.Get("https://floridapoly.aplusattendance.com/canvas/student/?canvasCourse=7329&doStudentAuth=true")
-	//body, err = io.ReadAll(req.Body)
+	//body, _ = io.ReadAll(resp.Body)
 
 	//fmt.Println(string(body))
 	//fmt.Println(req)