christianselig-apollo-backend/internal/reddit/request.go

137 lines
2.5 KiB
Go

package reddit
import (
"context"
"encoding/base64"
"fmt"
"net/http"
"net/url"
"strings"
)
const userAgent = "server:apollo-backend:v1.0 (by /u/iamthatis) contact me@christianselig.com"
type Request struct {
body url.Values
query url.Values
method string
token string
url string
auth string
tags []string
emptyResponseBytes int
retry bool
client *http.Client
}
type RequestOption func(*Request)
func NewRequest(opts ...RequestOption) *Request {
req := &Request{
body: url.Values{},
query: url.Values{},
method: "GET",
url: "",
token: "",
auth: "",
tags: nil,
emptyResponseBytes: 0,
retry: true,
client: nil,
}
req.query.Set("raw_json", "1")
for _, opt := range opts {
opt(req)
}
return req
}
func (r *Request) HTTPRequest(ctx context.Context) (*http.Request, error) {
req, err := http.NewRequestWithContext(ctx, r.method, r.url, strings.NewReader(r.body.Encode()))
req.URL.RawQuery = r.query.Encode()
req.Header.Add("Accept", "application/json")
req.Header.Add("User-Agent", userAgent)
if r.token != "" {
req.Header.Add("Authorization", fmt.Sprintf("Bearer %s", r.token))
}
if r.auth != "" {
req.Header.Add("Authorization", fmt.Sprintf("Basic %s", r.auth))
}
return req, err
}
func WithTags(tags []string) RequestOption {
return func(req *Request) {
req.tags = tags
}
}
func WithMethod(method string) RequestOption {
return func(req *Request) {
req.method = method
}
}
func WithURL(url string) RequestOption {
return func(req *Request) {
req.url = url
}
}
func WithBasicAuth(user, password string) RequestOption {
return func(req *Request) {
encoded := base64.StdEncoding.EncodeToString([]byte(user + ":" + password))
req.auth = encoded
}
}
func WithToken(token string) RequestOption {
return func(req *Request) {
req.token = token
}
}
func WithBody(key, val string) RequestOption {
return func(req *Request) {
req.body.Set(key, val)
}
}
func WithQuery(key, val string) RequestOption {
if val == "" {
return func(req *Request) {}
}
return func(req *Request) {
req.query.Set(key, val)
}
}
func WithEmptyResponseBytes(bytes int) RequestOption {
return func(req *Request) {
req.emptyResponseBytes = bytes
}
}
func WithRetry(retry bool) RequestOption {
return func(req *Request) {
req.retry = retry
}
}
func WithClient(client *http.Client) RequestOption {
return func(req *Request) {
req.client = client
}
}