status.go

package rudder

import (
	"bytes"
	"context"
	"fmt"
	"io"
	"net/http"
	"net/url"

	"github.com/infra-rdc/rudder-go/internal/hooks"
	"github.com/infra-rdc/rudder-go/internal/utils"
	"github.com/infra-rdc/rudder-go/models/components"
	"github.com/infra-rdc/rudder-go/models/operations"
	"github.com/infra-rdc/rudder-go/models/sdkerrors"
)

// Status - Is alive check
type Status struct {
	sdkConfiguration sdkConfiguration
}

func newStatus(sdkConfig sdkConfiguration) *Status {
	return &Status{
		sdkConfiguration: sdkConfig,
	}
}

// None - Check if Rudder is alive
// An unauthenticated API to check if Rudder web application is up and running. Be careful: this API does not follow other Rudder's API convention:
// - it is not versioned, so the path is just `/api/status`;
// - it returns a plain text message.
func (s *Status) None(ctx context.Context) (*operations.NoneResponse, error) {
	hookCtx := hooks.HookContext{
		Context:        ctx,
		OperationID:    "none",
		SecuritySource: nil,
	}

	baseURL := utils.ReplaceParameters(s.sdkConfiguration.GetServerDetails())
	opURL, err := url.JoinPath(baseURL, "/status")
	if err != nil {
		return nil, fmt.Errorf("error generating URL: %w", err)
	}

	req, err := http.NewRequestWithContext(ctx, "GET", opURL, nil)
	if err != nil {
		return nil, fmt.Errorf("error creating request: %w", err)
	}
	req.Header.Set("Accept", "text/plain")
	req.Header.Set("User-Agent", s.sdkConfiguration.UserAgent)

	req, err = s.sdkConfiguration.Hooks.BeforeRequest(hooks.BeforeRequestContext{HookContext: hookCtx}, req)
	if err != nil {
		return nil, err
	}

	httpRes, err := s.sdkConfiguration.Client.Do(req)
	if err != nil || httpRes == nil {
		if err != nil {
			err = fmt.Errorf("error sending request: %w", err)
		} else {
			err = fmt.Errorf("error sending request: no response")
		}

		_, err = s.sdkConfiguration.Hooks.AfterError(hooks.AfterErrorContext{HookContext: hookCtx}, nil, err)
		return nil, err
	} else if utils.MatchStatusCodes([]string{"4XX", "5XX"}, httpRes.StatusCode) {
		_httpRes, err := s.sdkConfiguration.Hooks.AfterError(hooks.AfterErrorContext{HookContext: hookCtx}, httpRes, nil)
		if err != nil {
			return nil, err
		} else if _httpRes != nil {
			httpRes = _httpRes
		}
	} else {
		httpRes, err = s.sdkConfiguration.Hooks.AfterSuccess(hooks.AfterSuccessContext{HookContext: hookCtx}, httpRes)
		if err != nil {
			return nil, err
		}
	}

	res := &operations.NoneResponse{
		HTTPMeta: components.HTTPMetadata{
			Request:  req,
			Response: httpRes,
		},
	}

	rawBody, err := io.ReadAll(httpRes.Body)
	if err != nil {
		return nil, fmt.Errorf("error reading response body: %w", err)
	}
	httpRes.Body.Close()
	httpRes.Body = io.NopCloser(bytes.NewBuffer(rawBody))

	switch {
	case httpRes.StatusCode == 200:
		switch {
		case utils.MatchContentType(httpRes.Header.Get("Content-Type"), `text/plain`):

			out := string(rawBody)
			res.Res = &out
		default:
			return nil, sdkerrors.NewSDKError(fmt.Sprintf("unknown content-type received: %s", httpRes.Header.Get("Content-Type")), httpRes.StatusCode, string(rawBody), httpRes)
		}
	case httpRes.StatusCode >= 400 && httpRes.StatusCode < 500:
		fallthrough
	case httpRes.StatusCode >= 500 && httpRes.StatusCode < 600:
		return nil, sdkerrors.NewSDKError("API error occurred", httpRes.StatusCode, string(rawBody), httpRes)
	default:
		return nil, sdkerrors.NewSDKError("unknown status code returned", httpRes.StatusCode, string(rawBody), httpRes)
	}

	return res, nil

}