Go program for finding out the average number of students per section from the Clever API.

clever_average_student.go

package main

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"net/http"
)

type Response struct {
	Paging struct {
		Count float64
	}
	Data []SectionData
}

type SectionData struct {
	Data struct {
		Students []string
	}
}

func main() {
	// Setup request to get all Sections from Clever API.
	// Set limit to 1000 so only need to read one page.
	req, err := http.NewRequest("GET", "https://api.clever.com/v1.1/sections?limit=1000", nil)
	if err != nil {
		fmt.Println("Error:", err)
	}
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded; param=value")
	req.SetBasicAuth("DEMO_KEY", "")

	// Make request to Clever API and unmarshall the response into the structs above.
	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		fmt.Println("Error:", err)
	}
	defer resp.Body.Close()
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		fmt.Println("Error:", err)
	}
	response := &Response{}
	json.Unmarshal(body, &response)

	// Sum up students and calculate the average number of students per section.
	totalStudents := 0.0
	totalSections := response.Paging.Count
	for _, section := range response.Data {
		totalStudents += float64(len(section.Data.Students))
	}
	fmt.Println("Total Students:", totalStudents)
	fmt.Println("Total Sections:", totalSections)
	fmt.Println("Average Number of Students per Section:", totalStudents/totalSections)
}