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package mollie |
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import ( |
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"bytes" |
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"context" |
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"encoding/json" |
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"errors" |
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"fmt" |
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"io" |
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"net/http" |
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"net/url" |
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"os" |
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"regexp" |
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"runtime" |
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"strings" |
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"github.com/google/go-querystring/query" |
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) |
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// Constants holding values for client initialization and request instantiation. |
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const ( |
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BaseURL string = "https://api.mollie.com/" |
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AuthHeader string = "Authorization" |
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TokenType string = "Bearer" |
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APITokenEnv string = "MOLLIE_API_TOKEN" |
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OrgTokenEnv string = "MOLLIE_ORG_TOKEN" |
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RequestContentType string = "application/json" |
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) |
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var ( |
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accessTokenExpr = regexp.MustCompile(`(?m)^access_`) |
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errEmptyAuthKey = errors.New("you must provide a non-empty authentication key") |
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errBadBaseURL = errors.New("malformed base url, it must contain a trailing slash") |
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) |
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// Client manages communication with Mollie's API. |
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type Client struct { |
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BaseURL *url.URL |
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authentication string |
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userAgent string |
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client *http.Client |
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common service // Reuse a single struct instead of allocating one for each service on the heap. |
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config *Config |
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// Services |
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Payments *PaymentsService |
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Chargebacks *ChargebacksService |
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PaymentMethods *PaymentMethodsService |
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Invoices *InvoicesService |
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Organizations *OrganizationsService |
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Profiles *ProfilesService |
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Refunds *RefundsService |
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Shipments *ShipmentsService |
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Orders *OrdersService |
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Settlements *SettlementsService |
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Captures *CapturesService |
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Subscriptions *SubscriptionsService |
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Customers *CustomersService |
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Miscellaneous *MiscellaneousService |
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Mandates *MandatesService |
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Permissions *PermissionsService |
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Onboarding *OnboardingService |
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PaymentLinks *PaymentLinksService |
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Partners *PartnerService |
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} |
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type service struct { |
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client *Client |
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} |
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func (c *Client) get(ctx context.Context, uri string, options interface{}) (res *Response, err error) { |
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if options != nil { |
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v, _ := query.Values(options) |
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uri = fmt.Sprintf("%s?%s", uri, v.Encode()) |
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} |
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req, err := c.NewAPIRequest(ctx, http.MethodGet, uri, nil) |
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if err != nil { |
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return |
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} |
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return c.Do(req) |
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} |
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func (c *Client) post(ctx context.Context, uri string, body interface{}, options interface{}) (res *Response, err error) { |
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if options != nil { |
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v, _ := query.Values(options) |
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uri = fmt.Sprintf("%s?%s", uri, v.Encode()) |
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} |
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req, err := c.NewAPIRequest(ctx, http.MethodPost, uri, body) |
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if err != nil { |
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return |
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} |
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return c.Do(req) |
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} |
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func (c *Client) patch(ctx context.Context, uri string, body interface{}, options interface{}) (res *Response, err error) { |
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if options != nil { |
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v, _ := query.Values(options) |
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uri = fmt.Sprintf("%s?%s", uri, v.Encode()) |
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} |
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req, err := c.NewAPIRequest(ctx, http.MethodPatch, uri, body) |
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if err != nil { |
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return |
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} |
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return c.Do(req) |
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} |
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func (c *Client) delete(ctx context.Context, uri string, options interface{}) (res *Response, err error) { |
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if options != nil { |
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v, _ := query.Values(options) |
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uri = fmt.Sprintf("%s?%s", uri, v.Encode()) |
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} |
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req, err := c.NewAPIRequest(ctx, http.MethodDelete, uri, nil) |
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if err != nil { |
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return |
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} |
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return c.Do(req) |
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} |
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// WithAuthenticationValue offers a convenient setter for any of the valid authentication |
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// tokens provided by Mollie. |
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// |
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// Ideally your API key will be provided from and environment variable or |
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// a secret management engine. |
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// This should only be used when environment variables are "impossible" to be used. |
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func (c *Client) WithAuthenticationValue(k string) error { |
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if k == "" { |
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return errEmptyAuthKey |
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} |
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c.authentication = strings.TrimSpace(k) |
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return nil |
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} |
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// HasAccessToken will return true when the provided authentication token |
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// complies with the access token REGEXP match check. |
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// This will enable TestMode inside the request body. |
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// |
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// See: https://github.com/VictorAvelar/mollie-api-go/issues/123 |
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func (c *Client) HasAccessToken() bool { |
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return accessTokenExpr.Match([]byte(c.authentication)) |
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} |
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// NewAPIRequest is a wrapper around the http.NewRequest function. |
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// |
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// It will setup the authentication headers/parameters according to the client config. |
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func (c *Client) NewAPIRequest(ctx context.Context, method string, uri string, body interface{}) (req *http.Request, err error) { |
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if !strings.HasSuffix(c.BaseURL.Path, "/") { |
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return nil, errBadBaseURL |
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} |
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url, err := c.BaseURL.Parse(uri) |
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if err != nil { |
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return nil, fmt.Errorf("url_parsing_error: %w", err) |
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} |
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if c.config.testing && c.HasAccessToken() { |
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qp := url.Query() |
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qp.Add("testmode", "true") |
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url.RawQuery = qp.Encode() |
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} |
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var buf io.ReadWriter |
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if body != nil { |
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buf = new(bytes.Buffer) |
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enc := json.NewEncoder(buf) |
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enc.SetEscapeHTML(false) |
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err := enc.Encode(body) |
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if err != nil { |
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return nil, fmt.Errorf("encoding_error: %w", err) |
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} |
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} |
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if ctx == nil { |
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ctx = context.Background() |
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} |
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req, err = http.NewRequestWithContext(ctx, method, url.String(), buf) |
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if err != nil { |
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return |
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} |
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req.Header.Add(AuthHeader, strings.Join([]string{TokenType, c.authentication}, " ")) |
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req.Header.Set("Content-Type", RequestContentType) |
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req.Header.Set("Accept", RequestContentType) |
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req.Header.Set("User-Agent", c.userAgent) |
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return |
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} |
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// Do sends an API request and returns the API response or returned as an |
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// error if an API error has occurred. |
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func (c *Client) Do(req *http.Request) (*Response, error) { |
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resp, err := c.client.Do(req) |
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if err != nil { |
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return nil, fmt.Errorf("httperror: %w", err) |
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} |
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defer resp.Body.Close() |
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response, err := newResponse(resp) |
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if err != nil { |
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return response, err |
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} |
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err = CheckResponse(response) |
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if err != nil { |
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return response, err |
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} |
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return response, nil |
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} |
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// NewClient returns a new Mollie HTTP API client. |
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// You can pass a previously build http client, if none is provided then |
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// http.DefaultClient will be used. |
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// |
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// NewClient will lookup the environment for values to assign to the |
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// API token (`MOLLIE_API_TOKEN`) and the Organization token (`MOLLIE_ORG_TOKEN`) |
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// according to the provided Config object. |
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// |
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// You can also set the token values programmatically by using the Client |
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// WithAPIKey and WithOrganizationKey functions. |
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func NewClient(baseClient *http.Client, conf *Config) (mollie *Client, err error) { |
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if baseClient == nil { |
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baseClient = http.DefaultClient |
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} |
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uri, _ := url.Parse(BaseURL) |
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mollie = &Client{ |
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BaseURL: uri, |
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client: baseClient, |
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config: conf, |
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} |
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mollie.common.client = mollie |
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// services for resources |
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mollie.Payments = (*PaymentsService)(&mollie.common) |
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mollie.Chargebacks = (*ChargebacksService)(&mollie.common) |
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mollie.PaymentMethods = (*PaymentMethodsService)(&mollie.common) |
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mollie.Invoices = (*InvoicesService)(&mollie.common) |
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mollie.Organizations = (*OrganizationsService)(&mollie.common) |
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mollie.Profiles = (*ProfilesService)(&mollie.common) |
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mollie.Refunds = (*RefundsService)(&mollie.common) |
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mollie.Shipments = (*ShipmentsService)(&mollie.common) |
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mollie.Orders = (*OrdersService)(&mollie.common) |
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mollie.Captures = (*CapturesService)(&mollie.common) |
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mollie.Settlements = (*SettlementsService)(&mollie.common) |
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mollie.Subscriptions = (*SubscriptionsService)(&mollie.common) |
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mollie.Customers = (*CustomersService)(&mollie.common) |
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mollie.Miscellaneous = (*MiscellaneousService)(&mollie.common) |
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mollie.Mandates = (*MandatesService)(&mollie.common) |
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mollie.Permissions = (*PermissionsService)(&mollie.common) |
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mollie.Onboarding = (*OnboardingService)(&mollie.common) |
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mollie.PaymentLinks = (*PaymentLinksService)(&mollie.common) |
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mollie.Partners = (*PartnerService)(&mollie.common) |
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mollie.userAgent = strings.Join([]string{ |
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runtime.GOOS, |
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runtime.GOARCH, |
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runtime.Version(), |
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}, ";") |
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273
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// Parse authorization from specified environment variable |
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1 |
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tkn, ok := os.LookupEnv(mollie.config.auth) |
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if ok { |
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mollie.authentication = tkn |
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} |
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return |
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} |
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/* |
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Constructor for Error. |
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*/ |
285
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func newError(rsp *Response) error { |
286
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merr := &BaseError{} |
287
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288
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1 |
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if rsp.ContentLength > 0 { |
289
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1 |
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err := json.Unmarshal(rsp.content, merr) |
290
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1 |
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if err != nil { |
291
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return err |
292
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} |
293
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} else { |
294
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1 |
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merr.Status = rsp.StatusCode |
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merr.Title = rsp.Status |
296
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1 |
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merr.Detail = string(rsp.content) |
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} |
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299
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1 |
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return merr |
300
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} |
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302
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// Response is a Mollie API response. This wraps the standard http.Response |
303
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// returned from Mollie and provides convenient access to things like |
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// pagination links. |
305
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type Response struct { |
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*http.Response |
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content []byte |
308
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} |
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310
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func newResponse(rsp *http.Response) (*Response, error) { |
311
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1 |
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res := Response{Response: rsp} |
312
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313
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1 |
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data, err := io.ReadAll(rsp.Body) |
314
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1 |
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if err != nil { |
315
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return &res, err |
316
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} |
317
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318
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1 |
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res.content = data |
319
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320
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1 |
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rsp.Body = io.NopCloser(bytes.NewBuffer(data)) |
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1 |
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res.Response = rsp |
322
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323
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1 |
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return &res, nil |
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} |
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326
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// CheckResponse checks the API response for errors, and returns them if |
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// present. A response is considered an error if it has a status code outside |
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// the 200 range. |
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// API error responses are expected to have either no response |
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// body, or a JSON response body. |
331
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func CheckResponse(r *Response) error { |
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1 |
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if r.StatusCode >= http.StatusMultipleChoices { |
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1 |
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return newError(r) |
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} |
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336
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return nil |
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} |
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