use the Canvas API to get A+ tool ID and URL

Was previously hardcoded.

1 files changed, 29 insertions, 3 deletions

diff --git a/canvas.go b/canvas.go
index df5f94c..5a43999 100644
--- a/canvas.go
+++ b/canvas.go
@@ -2,20 +2,21 @@ package main
 
 import (
         "encoding/json"
+        "errors"
         "fmt"
         "io"
         "net/http"
         "net/http/cookiejar"
         "os"
+        "strings"
 
         "golang.org/x/net/publicsuffix"
 )
 
 func initialize() {
-        base_link = "https://floridapolytechnic.instructure.com/api/v1"
-        base_aplus_link = "https://floridapoly.aplusattendance.com/canvas"
+        instance_url := "https://floridapolytechnic.instructure.com"
+        base_link = instance_url + "/api/v1"
         token = os.Getenv("CANVAS_API_KEY")
-        external_tools_code = 913
         jar, _ := cookiejar.New(&cookiejar.Options{
                 PublicSuffixList: publicsuffix.List,
         })
@@ -49,6 +50,31 @@ func get_courses(token string, link string, client http.Client) []CanvasCourse {
         return canvas_courses
 }
 
+func init_aplus_toolid(course_id int) error {
+        link := fmt.Sprintf("%s/courses/%d/external_tools?access_token=%s&search_term=aplus&include_parents=true", base_link, course_id, token)
+        resp, err := client.Get(link)
+        if err != nil {
+                return err
+        }
+        defer resp.Body.Close()
+        body, _ := io.ReadAll(resp.Body)
+
+        var external_tools []ExternalTool
+        err = json.Unmarshal(body, &external_tools)
+        if err != nil && !strings.Contains(string(body), "\"unauthorized\"") {
+                return err
+        }
+
+        for _, tool := range external_tools {
+                if strings.Contains(tool.URL, ".aplusattendance.com/") && base_aplus_link == "" {
+                        base_aplus_link = tool.URL
+                        external_tools_code = tool.ID
+                }
+        }
+
+        return errors.New("Could not find A+ link and tool ID")
+}
+
 func list_all_courses() {
         all_courses := fmt.Sprintf("%s/courses?access_token=%s&per_page=100", base_link, token)