netmaker/cli/functions/http_client.go

package functions

import (
	"bytes"
	"encoding/json"
	"io"
	"log"
	"net/http"

	"github.com/gravitl/netmaker/cli/config"
	"github.com/gravitl/netmaker/models"
)

func getAuthToken(ctx config.Context, force bool) string {
	if !force && ctx.AuthToken != "" {
		return ctx.AuthToken
	}
	authParams := &models.UserAuthParams{UserName: ctx.Username, Password: ctx.Password}
	payload, err := json.Marshal(authParams)
	if err != nil {
		log.Fatal(err)
	}
	res, err := http.Post(ctx.Endpoint+"/api/users/adm/authenticate", "application/json", bytes.NewReader(payload))
	if err != nil {
		log.Fatal(err)
	}
	resBodyBytes, err := io.ReadAll(res.Body)
	if err != nil {
		log.Fatalf("Client could not read response body: %s", err)
	}
	if res.StatusCode != http.StatusOK {
		log.Fatalf("Error response: %s", string(resBodyBytes))
	}
	body := new(models.SuccessResponse)
	if err := json.Unmarshal(resBodyBytes, body); err != nil {
		log.Fatalf("Error unmarshalling JSON: %s", err)
	}
	authToken := body.Response.(map[string]any)["AuthToken"].(string)
	config.SetAuthToken(authToken)
	return authToken
}

func request[T any](method, route string, payload any) *T {
	var (
		_, ctx = config.GetCurrentContext()
		req    *http.Request
		err    error
	)
	if payload == nil {
		req, err = http.NewRequest(method, ctx.Endpoint+route, nil)
		if err != nil {
			log.Fatalf("Client could not create request: %s", err)
		}
	} else {
		payloadBytes, jsonErr := json.Marshal(payload)
		if jsonErr != nil {
			log.Fatalf("Error in request JSON marshalling: %s", err)
		}
		req, err = http.NewRequest(method, ctx.Endpoint+route, bytes.NewReader(payloadBytes))
		if err != nil {
			log.Fatalf("Client could not create request: %s", err)
		}
		req.Header.Set("Content-Type", "application/json")
	}
	if ctx.MasterKey != "" {
		req.Header.Set("Authorization", "Bearer "+ctx.MasterKey)
	} else {
		req.Header.Set("Authorization", "Bearer "+getAuthToken(ctx, false))
	}
retry:
	res, err := http.DefaultClient.Do(req)
	if err != nil {
		log.Fatalf("Client error making http request: %s", err)
	}
	// refresh JWT token
	if res.StatusCode == http.StatusUnauthorized {
		req.Header.Set("Authorization", "Bearer "+getAuthToken(ctx, true))
		goto retry
	}
	resBodyBytes, err := io.ReadAll(res.Body)
	if err != nil {
		log.Fatalf("Client could not read response body: %s", err)
	}
	if res.StatusCode != http.StatusOK {
		log.Fatalf("Error Status: %d Response: %s", http.StatusOK, string(resBodyBytes))
	}
	body := new(T)
	if len(resBodyBytes) > 0 {
		if err := json.Unmarshal(resBodyBytes, body); err != nil {
			log.Fatalf("Error unmarshalling JSON: %s", err)
		}
	}
	return body
}