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|
package ibd
import (
"context"
"errors"
"log/slog"
"net/http"
"slices"
"github.com/ansg191/ibd-trader-backend/internal/database"
"github.com/ansg191/ibd-trader-backend/internal/ibd/transport"
)
var ErrNoAvailableCookies = errors.New("no available cookies")
var ErrNoAvailableTransports = errors.New("no available transports")
type Client struct {
transports []transport.Transport
cookies database.CookieSource
}
func NewClient(
transports []transport.Transport,
cookies database.CookieSource,
) *Client {
return &Client{transports, cookies}
}
func (c *Client) getCookie(ctx context.Context, subject *string) (uint, *http.Cookie, error) {
if subject == nil {
// No subject requirement, get any cookie
cookie, err := c.cookies.GetAnyCookie(ctx)
if err != nil {
return 0, nil, err
}
if cookie == nil {
return 0, nil, ErrNoAvailableCookies
}
return cookie.ID, cookie.ToHTTPCookie(), nil
}
// Get cookie by subject
cookies, err := c.cookies.GetCookies(ctx, *subject, false)
if err != nil {
return 0, nil, err
}
if len(cookies) == 0 {
return 0, nil, ErrNoAvailableCookies
}
cookie := cookies[0]
return cookie.ID, cookie.ToHTTPCookie(), nil
}
func (c *Client) Do(req *http.Request) (*http.Response, error) {
return c.DoWithStatus(req, []int{http.StatusOK})
}
func (c *Client) DoWithStatus(req *http.Request, expectedStatus []int) (*http.Response, error) {
for i, tp := range c.transports {
resp, err := tp.Do(req)
if errors.Is(err, transport.ErrUnsupportedRequest) {
// Skip unsupported transport
continue
}
if err != nil {
slog.ErrorContext(req.Context(), "transport error",
"transport", i,
"error", err,
)
continue
}
if slices.Contains(expectedStatus, resp.StatusCode) {
return resp, nil
} else {
slog.ErrorContext(req.Context(), "unexpected status code",
"transport", i,
"expected", expectedStatus,
"actual", resp.StatusCode,
)
continue
}
}
return nil, ErrNoAvailableTransports
}
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