114 lines
2.9 KiB
Go
114 lines
2.9 KiB
Go
package proxy
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import (
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"bytes"
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"context"
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"fmt"
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"io"
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"net/http"
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"devone.aplikasi.web.id/gitea/mario/go-ohif-proxy/internal/auth"
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)
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// Client is responsible for making requests to the Healthcare API
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type Client struct {
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googleAuth *auth.GoogleClient
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projectID string
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location string
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dataset string
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dicomStore string
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}
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// NewClient creates a new Healthcare API client
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// Hanya menerima cfg.Google struct instead of all cfg.Config
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func NewClient(googleAuth *auth.GoogleClient, googleConfig struct {
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ProjectID string `mapstructure:"project_id"`
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Location string `mapstructure:"location"`
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Dataset string `mapstructure:"dataset"`
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DicomStore string `mapstructure:"dicom_store"`
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CredentialsPath string `mapstructure:"credentials_path"`
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}) *Client {
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return &Client{
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googleAuth: googleAuth,
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projectID: googleConfig.ProjectID,
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location: googleConfig.Location,
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dataset: googleConfig.Dataset,
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dicomStore: googleConfig.DicomStore,
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}
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}
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// Response represents the HTTP response from the Healthcare API
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type Response struct {
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StatusCode int
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Headers map[string]string
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Body []byte
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}
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// ForwardRequest forwards a request to Google Healthcare API
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func (c *Client) ForwardRequest(ctx context.Context, method, path string, headers map[string]string, body []byte) (*Response, error) {
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token, err := c.googleAuth.GetAccessToken()
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if err != nil {
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return nil, fmt.Errorf("failed to get access token: %w", err)
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}
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// Build URL - Simplified to exactly match OHIF's expected structure
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baseURL := fmt.Sprintf("https://healthcare.googleapis.com/v1/projects/%s/locations/%s/datasets/%s/dicomStores/%s/dicomWeb",
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c.projectID, c.location, c.dataset, c.dicomStore)
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// Ensure path starts with /
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if len(path) > 0 && path[0] != '/' {
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path = "/" + path
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}
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fullURL := baseURL + path
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// Log the full URL for debugging
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fmt.Printf("Requesting URL: %s\n", fullURL)
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// Create request
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req, err := http.NewRequestWithContext(ctx, method, fullURL, bytes.NewReader(body))
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if err != nil {
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return nil, fmt.Errorf("failed to create request: %w", err)
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}
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// Set headers
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for k, v := range headers {
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// Skip setting certain headers that might cause issues
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if k == "Host" || k == "Content-Length" {
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continue
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}
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req.Header.Set(k, v)
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}
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// Set auth header
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req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token))
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// Make request
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client := &http.Client{}
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resp, err := client.Do(req)
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if err != nil {
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return nil, fmt.Errorf("failed to execute request: %w", err)
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}
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defer resp.Body.Close()
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// Read response body
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respBody, err := io.ReadAll(resp.Body)
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if err != nil {
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return nil, fmt.Errorf("failed to read response body: %w", err)
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}
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// Collect response headers
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respHeaders := make(map[string]string)
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for k, v := range resp.Header {
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if len(v) > 0 {
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respHeaders[k] = v[0]
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}
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}
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return &Response{
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StatusCode: resp.StatusCode,
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Headers: respHeaders,
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Body: respBody,
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}, nil
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}
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