client.go

/*
Rudder API

Download OpenAPI specification: [openapi.yml](openapi.yml)  **Other documentation sources**:  * [Main documentation](https://docs.rudder.io) * [Internal relay API](https://docs.rudder.io/api/relay/)  # Introduction  Rudder exposes a REST API, enabling the user to interact with Rudder without using the webapp, for example, in scripts or cron jobs.  ## Authentication  The Rudder REST API uses simple API keys for authentication. All requests must be authenticated (except from a generic status API). The tokens are 32-character strings, passed in a `X-API-Token` header, like in:   ```bash curl --header \"X-API-Token: yourToken\" https://rudder.example.com/rudder/api/latest/rules ```  The tokens are the API equivalent of a password, and must be secured just like a password would be.  ### API accounts  The accounts are managed in the Web interface. There are two possible types of accounts:  * **Global API accounts**: they are not linked to a Rudder user, and are managed by Rudder administrators in the _Administration -> API accounts_ page. You should define an expiration date whenever possible.  ![General API tokens settings](assets/api-tokens.png \"General API tokens settings\")  * **User tokens**: they are linked to a Rudder user, and give the same rights the user has. There can be only one token by user. This feature is provided by the `api-authorizatons` plugin.  ![User API token](assets/api-user.png \"User API token\")  When an action produces a change of configuration on the server, the API account that made it will be recorded in the event log, like for a Web interaction.  ### Authorization  When using Rudder without the `api-authorizatons` plugin, only global accounts are available, with two possible privilege levels, read-only or write. With the `api-authorizatons` plugin, you also get access to:  * User tokens, which have the same permissions as the user, using the Rudder roles and permissions feature. * Custom ACLs on global API accounts. They provide fine-grained permissions on every endpoint:  ![Custom API ACL](assets/custom-acl.png \"Custom API ACL\")  As a general principle, you should create dedicated tokens with the least privilege level for each different interaction you have with the API. This limits the risks of exploitation if a token is stolen, and allows tracking the activity of each token separately. Token renewal is also easier when they are only used for a limited purpose.  ## Versioning  Each time the API is extended with new features (new functions, new parameters, new responses, ...), it will be assigned a new version number. This will allow you to keep your existing scripts (based on previous behavior). Versions will always be integers (no 2.1 or 3.3, just 2, 3, 4, ...) or `latest`.  You can change the version of the API used by setting it either within the url or in a header:  * the URL: each URL is prefixed by its version id, like `/api/version/function`.  ```bash # Version 10 curl -X GET -H \"X-API-Token: yourToken\" https://rudder.example.com/rudder/api/10/rules # Latest curl -X GET -H \"X-API-Token: yourToken\" https://rudder.example.com/rudder/api/latest/rules # Wrong (not an integer) => 404 not found curl -X GET -H \"X-API-Token: yourToken\" https://rudder.example.com/rudder/api/3.14/rules ```  * the HTTP headers. You can add the **X-API-Version** header to your request. The value needs to be an integer or `latest`.  ```bash # Version 10 curl -X GET -H \"X-API-Token: yourToken\" -H \"X-API-Version: 10\" https://rudder.example.com/rudder/api/rules # Wrong => Error response indicating which versions are available curl -X GET -H \"X-API-Token: yourToken\" -H \"X-API-Version: 3.14\" https://rudder.example.com/rudder/api/rules ```  In the future, we may declare some versions as deprecated, in order to remove them in a later version of Rudder, but we will never remove any versions without warning, or without a safe period of time to allow migration from previous versions.   <h4>Existing versions</h4> <table>   <thead>     <tr>       <th style=\"width: 20%\">Version</th>       <th style=\"width: 20%\">Rudder versions it appeared in</th>       <th style=\"width: 70%\">Description</th>     </tr>   </thead>   <tbody>     <tr>       <td class=\"code\">1</td>       <td class=\"code\">Never released (for internal use only)</td>       <td>Experimental version</td>     </tr>     <tr>       <td class=\"code\">2 to 10 (deprecated)</td>       <td class=\"code\">4.3 and before</td>       <td>These versions provided the core set of API features for rules, directives, nodes global parameters, change requests and compliance, rudder settings, and system API</td>     </tr>     <tr>       <td class=\"code\">11</td>       <td class=\"code\">5.0</td>       <td>New system API (replacing old localhost v1 api): status, maintenance operations and server behavior</td>     </tr>     <tr>       <td class=\"code\">12</td>       <td class=\"code\">6.0 and 6.1</td>       <td>Node key management</td>     </tr>     <tr>       <td class=\"code\">13</td>       <td class=\"code\">6.2</td>       <td><ul>         <li>Node status endpoint</li>         <li>System health check</li>         <li>System maintenance job to purge software [that endpoint was back-ported in 6.1]</li>       </ul></td>     </tr>     <tr>       <td class=\"code\">14</td>       <td class=\"code\">7.0</td>       <td><ul>         <li>Secret management</li>         <li>Directive tree</li>         <li>Improve techniques management</li>         <li>Demote a relay</li>       </ul></td>     </tr>     <tr>       <td class=\"code\">15</td>       <td class=\"code\">7.1</td>       <td><ul>         <li>Package updates in nodes</li>       </ul></td>     </tr>     <tr>       <td class=\"code\">16</td>       <td class=\"code\">7.2</td>       <td><ul>         <li>Create node API included from plugin</li>         <li>Configuration archive import/export</li>       </ul></td>     </tr>     <tr>       <td class=\"code\">17</td>       <td class=\"code\">7.3</td>       <td><ul>         <li>Compliance by directive</li>         <li>Path campaigns API included</li>       </ul></td>     </tr>     <tr>       <td class=\"code\">18</td>       <td class=\"code\">8.0</td>       <td><ul>         <li>Allowed network </li>         <li>Improve the structure of `/settings/allowed_networks` output</li>       </ul></td>     </tr>   </tbody> </table>   ## Response format  All responses from the API are in the JSON format.  ```json {   \"action\": \"The name of the called function\",   \"id\": \"The ID of the element you want, if relevant\",   \"result\": \"The result of your action: success or error\",   \"data\": \"Only present if this is a success and depends on the function, it's usually a JSON object\",   \"errorDetails\": \"Only present if this is an error, it contains the error message\" } ```   * __Success__ responses are sent with the 200 HTTP (Success) code  * __Error__ responses are sent with a HTTP error code (mostly 5xx...)   ## HTTP method  Rudder's REST API is based on the usage of [HTTP methods](http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html). We use them to indicate what action will be done by the request. Currently, we use four of them:   * **GET**: search or retrieve information (get rule details, get a group, ...)  * **PUT**: add new objects (create a directive, clone a Rule, ...)  * **DELETE**: remove objects (delete a node, delete a parameter, ...)  * **POST**: update existing objects (update a directive, reload a group, ...)   ## Parameters  ### General parameters  Some parameters are available for almost all API functions. They will be described in this section. They must be part of the query and can't be submitted in a JSON form.  #### Available for all requests  <table>   <thead>     <tr>       <th style=\"width: 30%\">Field</th>       <th style=\"width: 10%\">Type</th>       <th style=\"width: 70%\">Description</th>     </tr>   </thead>   <tbody>     <tr>       <td class=\"code\">prettify</td>       <td><b>boolean</b><br><i>optional</i></td>       <td>         Determine if the answer should be prettified (human friendly) or not. We recommend using this for debugging purposes, but not for general script usage as this does add some unnecessary load on the server side.         <p class=\"default-value\">Default value: <code>false</code></p>       </td>     </tr>   </tbody> </table>   #### Available for modification requests (PUT/POST/DELETE)  <table>   <thead>     <tr>       <th style=\"width: 25%\">Field</th>       <th style=\"width: 12%\">Type</th>       <th style=\"width: 70%\">Description</th>     </tr>   </thead>   <tbody>     <tr>       <td class=\"code\">reason</td>       <td><b>string</b><br><i>optional</i> or <i>required</i></td>       <td>         Set a message to explain the change. If you set the reason messages to be mandatory in the web interface, failing to supply this value will lead to an error.         <p class=\"default-value\">Default value: <code>\"\"</code></p>       </td>     </tr>     <tr>       <td class=\"code\">changeRequestName</td>       <td><b>string</b><br><i>optional</i></td>       <td>         Set the change request name, is used only if workflows are enabled. The default value depends on the function called         <p class=\"default-value\">Default value: <code>A default string for each function</code></p>       </td>     </tr>     <tr>       <td class=\"code\">changeRequestDescription</td>       <td><b>string</b><br><i>optional</i></td>       <td>         Set the change request description, is used only if workflows are enabled.         <p class=\"default-value\">Default value: <code>\"\"</code></p>       </td>     </tr>   </tbody> </table>   ### Passing parameters  Parameters to the API can be sent:  * As part of the URL for resource identification  * As data for POST/PUT requests    * Directly in JSON format    * As request arguments  #### As part of the URL for resource identification  Parameters in URLs are used to indicate which resource you want to interact with. The function will not work if this resource is missing.  ```bash # Get the Rule of ID \"id\" curl -H \"X-API-Token: yourToken\" https://rudder.example.com/rudder/api/latest/rules/id ```  CAUTION: To avoid surprising behavior, do not put a '/' at the end of a URL: it would be interpreted as '/[empty string parameter]' and redirected to '/index', likely not what you wanted to do.   #### Sending data for POST/PUT requests  ##### Directly in JSON format  JSON format is the preferred way to interact with Rudder API for creating or updating resources. You'll also have to set the *Content-Type* header to **application/json** (without it the JSON content would be ignored). In a `curl` `POST` request, that header can be provided with the `-H` parameter:  ```bash curl -X POST -H \"Content-Type: application/json\" ... ```  The supplied file must contain a valid JSON: strings need quotes, booleans and integers don't, etc.  The (human-readable) format is:  ```json {   \"key1\": \"value1\",   \"key2\": false,   \"key3\": 42 } ```  Here is an example with inlined data:  ```bash # Update the Rule 'id' with a new name, disabled, and setting it one directive curl -X POST -H \"X-API-Token: yourToken\" -H  \"Content-Type: application/json\" https://rudder.example.com/rudder/api/rules/latest/{id}   -d '{ \"displayName\": \"new name\", \"enabled\": false, \"directives\": \"directiveId\"}' ```  You can also pass a supply the JSON in a file:  ```bash # Update the Rule 'id' with a new name, disabled, and setting it one directive curl -X POST -H \"X-API-Token: yourToken\" -H \"Content-Type: application/json\" https://rudder.example.com/rudder/api/rules/latest/{id} -d @jsonParam ```  Note that the general parameters view in the previous chapter cannot be passed in a JSON, and you will need to pass them a URL parameters if you want them to be taken into account (you can't mix JSON and request parameters):  ```bash # Update the Rule 'id' with a new name, disabled, and setting it one directive with reason message \"Reason used\" curl -X POST -H \"X-API-Token: yourToken\" -H \"Content-Type: application/json\" \"https://rudder.example.com/rudder/api/rules/latest/{id}?reason=Reason used\" -d @jsonParam -d \"reason=Reason ignored\" ```  ##### Request parameters  In some cases, when you have little, simple data to update, JSON can feel bloated. In such cases, you can use request parameters. You will need to pass one parameter for each data you want to change.  Parameters follow the following schema:  ``` key=value ```  You can pass parameters by two means:  * As query parameters: At the end of your url, put a **?** then your first parameter and then a **&** before next parameters. In that case, parameters need to be https://en.wikipedia.org/wiki/Percent-encoding[URL encoded]  ```bash # Update the Rule 'id' with a new name, disabled, and setting it one directive curl -X POST -H \"X-API-Token: yourToken\"  https://rudder.example.com/rudder/api/rules/latest/{id}?\"displayName=my new name\"&\"enabled=false\"&\"directives=aDirectiveId\" ```  * As request data: You can pass those parameters in the request data, they won't figure in the URL, making it lighter to read, You can pass a file that contains data.  ```bash # Update the Rule 'id' with a new name, disabled, and setting it one directive (in file directive-info.json) curl -X POST -H \"X-API-Token: yourToken\" https://rudder.example.com/rudder/api/rules/latest/{id} -d \"displayName=my new name\" -d \"enabled=false\" -d @directive-info.json ``` 

API version: 18
Contact: dev@rudder.io
*/

// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.

package rudder-golang

import (
	"bytes"
	"context"
	"encoding/json"
	"encoding/xml"
	"errors"
	"fmt"
	"io"
	"log"
	"mime/multipart"
	"net/http"
	"net/http/httputil"
	"net/url"
	"os"
	"path/filepath"
	"reflect"
	"regexp"
	"strconv"
	"strings"
	"time"
	"unicode/utf8"

)

var (
	JsonCheck       = regexp.MustCompile(`(?i:(?:application|text)/(?:[^;]+\+)?json)`)
	XmlCheck        = regexp.MustCompile(`(?i:(?:application|text)/(?:[^;]+\+)?xml)`)
	queryParamSplit = regexp.MustCompile(`(^|&)([^&]+)`)
	queryDescape    = strings.NewReplacer( "%5B", "[", "%5D", "]" )
)

// APIClient manages communication with the Rudder API API v18
// In most cases there should be only one, shared, APIClient.
type APIClient struct {
	cfg    *Configuration
	common service // Reuse a single struct instead of allocating one for each service on the heap.

	// API Services

	APIInfoAPI *APIInfoAPIService

	ArchivesAPI *ArchivesAPIService

	BrandingAPI *BrandingAPIService

	CVEAPI *CVEAPIService

	CampaignsAPI *CampaignsAPIService

	ChangeRequestsAPI *ChangeRequestsAPIService

	ComplianceAPI *ComplianceAPIService

	DataSourcesAPI *DataSourcesAPIService

	DirectivesAPI *DirectivesAPIService

	GroupsAPI *GroupsAPIService

	InventoriesAPI *InventoriesAPIService

	NodesAPI *NodesAPIService

	OpenSCAPAPI *OpenSCAPAPIService

	ParametersAPI *ParametersAPIService

	RulesAPI *RulesAPIService

	ScaleOutRelayAPI *ScaleOutRelayAPIService

	SecretManagementAPI *SecretManagementAPIService

	SettingsAPI *SettingsAPIService

	StatusAPI *StatusAPIService

	SystemAPI *SystemAPIService

	SystemUpdateCampaignsAPI *SystemUpdateCampaignsAPIService

	TechniquesAPI *TechniquesAPIService

	UserManagementAPI *UserManagementAPIService
}

type service struct {
	client *APIClient
}

// NewAPIClient creates a new API client. Requires a userAgent string describing your application.
// optionally a custom http.Client to allow for advanced features such as caching.
func NewAPIClient(cfg *Configuration) *APIClient {
	if cfg.HTTPClient == nil {
		cfg.HTTPClient = http.DefaultClient
	}

	c := &APIClient{}
	c.cfg = cfg
	c.common.client = c

	// API Services
	c.APIInfoAPI = (*APIInfoAPIService)(&c.common)
	c.ArchivesAPI = (*ArchivesAPIService)(&c.common)
	c.BrandingAPI = (*BrandingAPIService)(&c.common)
	c.CVEAPI = (*CVEAPIService)(&c.common)
	c.CampaignsAPI = (*CampaignsAPIService)(&c.common)
	c.ChangeRequestsAPI = (*ChangeRequestsAPIService)(&c.common)
	c.ComplianceAPI = (*ComplianceAPIService)(&c.common)
	c.DataSourcesAPI = (*DataSourcesAPIService)(&c.common)
	c.DirectivesAPI = (*DirectivesAPIService)(&c.common)
	c.GroupsAPI = (*GroupsAPIService)(&c.common)
	c.InventoriesAPI = (*InventoriesAPIService)(&c.common)
	c.NodesAPI = (*NodesAPIService)(&c.common)
	c.OpenSCAPAPI = (*OpenSCAPAPIService)(&c.common)
	c.ParametersAPI = (*ParametersAPIService)(&c.common)
	c.RulesAPI = (*RulesAPIService)(&c.common)
	c.ScaleOutRelayAPI = (*ScaleOutRelayAPIService)(&c.common)
	c.SecretManagementAPI = (*SecretManagementAPIService)(&c.common)
	c.SettingsAPI = (*SettingsAPIService)(&c.common)
	c.StatusAPI = (*StatusAPIService)(&c.common)
	c.SystemAPI = (*SystemAPIService)(&c.common)
	c.SystemUpdateCampaignsAPI = (*SystemUpdateCampaignsAPIService)(&c.common)
	c.TechniquesAPI = (*TechniquesAPIService)(&c.common)
	c.UserManagementAPI = (*UserManagementAPIService)(&c.common)

	return c
}

func atoi(in string) (int, error) {
	return strconv.Atoi(in)
}

// selectHeaderContentType select a content type from the available list.
func selectHeaderContentType(contentTypes []string) string {
	if len(contentTypes) == 0 {
		return ""
	}
	if contains(contentTypes, "application/json") {
		return "application/json"
	}
	return contentTypes[0] // use the first content type specified in 'consumes'
}

// selectHeaderAccept join all accept types and return
func selectHeaderAccept(accepts []string) string {
	if len(accepts) == 0 {
		return ""
	}

	if contains(accepts, "application/json") {
		return "application/json"
	}

	return strings.Join(accepts, ",")
}

// contains is a case insensitive match, finding needle in a haystack
func contains(haystack []string, needle string) bool {
	for _, a := range haystack {
		if strings.EqualFold(a, needle) {
			return true
		}
	}
	return false
}

// Verify optional parameters are of the correct type.
func typeCheckParameter(obj interface{}, expected string, name string) error {
	// Make sure there is an object.
	if obj == nil {
		return nil
	}

	// Check the type is as expected.
	if reflect.TypeOf(obj).String() != expected {
		return fmt.Errorf("expected %s to be of type %s but received %s", name, expected, reflect.TypeOf(obj).String())
	}
	return nil
}

func parameterValueToString( obj interface{}, key string ) string {
	if reflect.TypeOf(obj).Kind() != reflect.Ptr {
		return fmt.Sprintf("%v", obj)
	}
	var param,ok = obj.(MappedNullable)
	if !ok {
		return ""
	}
	dataMap,err := param.ToMap()
	if err != nil {
		return ""
	}
	return fmt.Sprintf("%v", dataMap[key])
}

// parameterAddToHeaderOrQuery adds the provided object to the request header or url query
// supporting deep object syntax
func parameterAddToHeaderOrQuery(headerOrQueryParams interface{}, keyPrefix string, obj interface{}, collectionType string) {
	var v = reflect.ValueOf(obj)
	var value = ""
	if v == reflect.ValueOf(nil) {
		value = "null"
	} else {
		switch v.Kind() {
			case reflect.Invalid:
				value = "invalid"

			case reflect.Struct:
				if t,ok := obj.(MappedNullable); ok {
					dataMap,err := t.ToMap()
					if err != nil {
						return
					}
					parameterAddToHeaderOrQuery(headerOrQueryParams, keyPrefix, dataMap, collectionType)
					return
				}
				if t, ok := obj.(time.Time); ok {
					parameterAddToHeaderOrQuery(headerOrQueryParams, keyPrefix, t.Format(time.RFC3339), collectionType)
					return
				}
				value = v.Type().String() + " value"
			case reflect.Slice:
				var indValue = reflect.ValueOf(obj)
				if indValue == reflect.ValueOf(nil) {
					return
				}
				var lenIndValue = indValue.Len()
				for i:=0;i<lenIndValue;i++ {
					var arrayValue = indValue.Index(i)
					parameterAddToHeaderOrQuery(headerOrQueryParams, keyPrefix, arrayValue.Interface(), collectionType)
				}
				return

			case reflect.Map:
				var indValue = reflect.ValueOf(obj)
				if indValue == reflect.ValueOf(nil) {
					return
				}
				iter := indValue.MapRange()
				for iter.Next() {
					k,v := iter.Key(), iter.Value()
					parameterAddToHeaderOrQuery(headerOrQueryParams, fmt.Sprintf("%s[%s]", keyPrefix, k.String()), v.Interface(), collectionType)
				}
				return

			case reflect.Interface:
				fallthrough
			case reflect.Ptr:
				parameterAddToHeaderOrQuery(headerOrQueryParams, keyPrefix, v.Elem().Interface(), collectionType)
				return

			case reflect.Int, reflect.Int8, reflect.Int16,
				reflect.Int32, reflect.Int64:
				value = strconv.FormatInt(v.Int(), 10)
			case reflect.Uint, reflect.Uint8, reflect.Uint16,
				reflect.Uint32, reflect.Uint64, reflect.Uintptr:
				value = strconv.FormatUint(v.Uint(), 10)
			case reflect.Float32, reflect.Float64:
				value = strconv.FormatFloat(v.Float(), 'g', -1, 32)
			case reflect.Bool:
				value = strconv.FormatBool(v.Bool())
			case reflect.String:
				value = v.String()
			default:
				value = v.Type().String() + " value"
		}
	}

	switch valuesMap := headerOrQueryParams.(type) {
		case url.Values:
			if collectionType == "csv" && valuesMap.Get(keyPrefix) != "" {
				valuesMap.Set(keyPrefix, valuesMap.Get(keyPrefix) + "," + value)
			} else {
				valuesMap.Add(keyPrefix, value)
			}
			break
		case map[string]string:
			valuesMap[keyPrefix] = value
			break
	}
}

// helper for converting interface{} parameters to json strings
func parameterToJson(obj interface{}) (string, error) {
	jsonBuf, err := json.Marshal(obj)
	if err != nil {
		return "", err
	}
	return string(jsonBuf), err
}

// callAPI do the request.
func (c *APIClient) callAPI(request *http.Request) (*http.Response, error) {
	if c.cfg.Debug {
		dump, err := httputil.DumpRequestOut(request, true)
		if err != nil {
			return nil, err
		}
		log.Printf("\n%s\n", string(dump))
	}

	resp, err := c.cfg.HTTPClient.Do(request)
	if err != nil {
		return resp, err
	}

	if c.cfg.Debug {
		dump, err := httputil.DumpResponse(resp, true)
		if err != nil {
			return resp, err
		}
		log.Printf("\n%s\n", string(dump))
	}
	return resp, err
}

// Allow modification of underlying config for alternate implementations and testing
// Caution: modifying the configuration while live can cause data races and potentially unwanted behavior
func (c *APIClient) GetConfig() *Configuration {
	return c.cfg
}

type formFile struct {
		fileBytes []byte
		fileName string
		formFileName string
}

// prepareRequest build the request
func (c *APIClient) prepareRequest(
	ctx context.Context,
	path string, method string,
	postBody interface{},
	headerParams map[string]string,
	queryParams url.Values,
	formParams url.Values,
	formFiles []formFile) (localVarRequest *http.Request, err error) {

	var body *bytes.Buffer

	// Detect postBody type and post.
	if postBody != nil {
		contentType := headerParams["Content-Type"]
		if contentType == "" {
			contentType = detectContentType(postBody)
			headerParams["Content-Type"] = contentType
		}

		body, err = setBody(postBody, contentType)
		if err != nil {
			return nil, err
		}
	}

	// add form parameters and file if available.
	if strings.HasPrefix(headerParams["Content-Type"], "multipart/form-data") && len(formParams) > 0 || (len(formFiles) > 0) {
		if body != nil {
			return nil, errors.New("Cannot specify postBody and multipart form at the same time.")
		}
		body = &bytes.Buffer{}
		w := multipart.NewWriter(body)

		for k, v := range formParams {
			for _, iv := range v {
				if strings.HasPrefix(k, "@") { // file
					err = addFile(w, k[1:], iv)
					if err != nil {
						return nil, err
					}
				} else { // form value
					w.WriteField(k, iv)
				}
			}
		}
		for _, formFile := range formFiles {
			if len(formFile.fileBytes) > 0 && formFile.fileName != "" {
				w.Boundary()
				part, err := w.CreateFormFile(formFile.formFileName, filepath.Base(formFile.fileName))
				if err != nil {
						return nil, err
				}
				_, err = part.Write(formFile.fileBytes)
				if err != nil {
						return nil, err
				}
			}
		}

		// Set the Boundary in the Content-Type
		headerParams["Content-Type"] = w.FormDataContentType()

		// Set Content-Length
		headerParams["Content-Length"] = fmt.Sprintf("%d", body.Len())
		w.Close()
	}

	if strings.HasPrefix(headerParams["Content-Type"], "application/x-www-form-urlencoded") && len(formParams) > 0 {
		if body != nil {
			return nil, errors.New("Cannot specify postBody and x-www-form-urlencoded form at the same time.")
		}
		body = &bytes.Buffer{}
		body.WriteString(formParams.Encode())
		// Set Content-Length
		headerParams["Content-Length"] = fmt.Sprintf("%d", body.Len())
	}

	// Setup path and query parameters
	url, err := url.Parse(path)
	if err != nil {
		return nil, err
	}

	// Override request host, if applicable
	if c.cfg.Host != "" {
		url.Host = c.cfg.Host
	}

	// Override request scheme, if applicable
	if c.cfg.Scheme != "" {
		url.Scheme = c.cfg.Scheme
	}

	// Adding Query Param
	query := url.Query()
	for k, v := range queryParams {
		for _, iv := range v {
			query.Add(k, iv)
		}
	}

	// Encode the parameters.
	url.RawQuery = queryParamSplit.ReplaceAllStringFunc(query.Encode(), func(s string) string {
		pieces := strings.Split(s, "=")
		pieces[0] = queryDescape.Replace(pieces[0])
		return strings.Join(pieces, "=")
	})

	// Generate a new request
	if body != nil {
		localVarRequest, err = http.NewRequest(method, url.String(), body)
	} else {
		localVarRequest, err = http.NewRequest(method, url.String(), nil)
	}
	if err != nil {
		return nil, err
	}

	// add header parameters, if any
	if len(headerParams) > 0 {
		headers := http.Header{}
		for h, v := range headerParams {
			headers[h] = []string{v}
		}
		localVarRequest.Header = headers
	}

	// Add the user agent to the request.
	localVarRequest.Header.Add("User-Agent", c.cfg.UserAgent)

	if ctx != nil {
		// add context to the request
		localVarRequest = localVarRequest.WithContext(ctx)

		// Walk through any authentication.

	}

	for header, value := range c.cfg.DefaultHeader {
		localVarRequest.Header.Add(header, value)
	}
	return localVarRequest, nil
}

func (c *APIClient) decode(v interface{}, b []byte, contentType string) (err error) {
	if len(b) == 0 {
		return nil
	}
	if s, ok := v.(*string); ok {
		*s = string(b)
		return nil
	}
	if f, ok := v.(*os.File); ok {
		f, err = os.CreateTemp("", "HttpClientFile")
		if err != nil {
			return
		}
		_, err = f.Write(b)
		if err != nil {
			return
		}
		_, err = f.Seek(0, io.SeekStart)
		return
	}
	if f, ok := v.(**os.File); ok {
		*f, err = os.CreateTemp("", "HttpClientFile")
		if err != nil {
			return
		}
		_, err = (*f).Write(b)
		if err != nil {
			return
		}
		_, err = (*f).Seek(0, io.SeekStart)
		return
	}
	if XmlCheck.MatchString(contentType) {
		if err = xml.Unmarshal(b, v); err != nil {
			return err
		}
		return nil
	}
	if JsonCheck.MatchString(contentType) {
		if actualObj, ok := v.(interface{ GetActualInstance() interface{} }); ok { // oneOf, anyOf schemas
			if unmarshalObj, ok := actualObj.(interface{ UnmarshalJSON([]byte) error }); ok { // make sure it has UnmarshalJSON defined
				if err = unmarshalObj.UnmarshalJSON(b); err != nil {
					return err
				}
			} else {
				return errors.New("Unknown type with GetActualInstance but no unmarshalObj.UnmarshalJSON defined")
			}
		} else if err = json.Unmarshal(b, v); err != nil { // simple model
			return err
		}
		return nil
	}
	return errors.New("undefined response type")
}

// Add a file to the multipart request
func addFile(w *multipart.Writer, fieldName, path string) error {
	file, err := os.Open(filepath.Clean(path))
	if err != nil {
		return err
	}
	err = file.Close()
	if err != nil {
		return err
	}

	part, err := w.CreateFormFile(fieldName, filepath.Base(path))
	if err != nil {
		return err
	}
	_, err = io.Copy(part, file)

	return err
}

// Prevent trying to import "fmt"
func reportError(format string, a ...interface{}) error {
	return fmt.Errorf(format, a...)
}

// A wrapper for strict JSON decoding
func newStrictDecoder(data []byte) *json.Decoder {
	dec := json.NewDecoder(bytes.NewBuffer(data))
	dec.DisallowUnknownFields()
	return dec
}

// Set request body from an interface{}
func setBody(body interface{}, contentType string) (bodyBuf *bytes.Buffer, err error) {
	if bodyBuf == nil {
		bodyBuf = &bytes.Buffer{}
	}

	if reader, ok := body.(io.Reader); ok {
		_, err = bodyBuf.ReadFrom(reader)
	} else if fp, ok := body.(*os.File); ok {
		_, err = bodyBuf.ReadFrom(fp)
	} else if b, ok := body.([]byte); ok {
		_, err = bodyBuf.Write(b)
	} else if s, ok := body.(string); ok {
		_, err = bodyBuf.WriteString(s)
	} else if s, ok := body.(*string); ok {
		_, err = bodyBuf.WriteString(*s)
	} else if JsonCheck.MatchString(contentType) {
		err = json.NewEncoder(bodyBuf).Encode(body)
	} else if XmlCheck.MatchString(contentType) {
		var bs []byte
		bs, err = xml.Marshal(body)
		if err == nil {
			bodyBuf.Write(bs)
		}
	}

	if err != nil {
		return nil, err
	}

	if bodyBuf.Len() == 0 {
		err = fmt.Errorf("invalid body type %s\n", contentType)
		return nil, err
	}
	return bodyBuf, nil
}

// detectContentType method is used to figure out `Request.Body` content type for request header
func detectContentType(body interface{}) string {
	contentType := "text/plain; charset=utf-8"
	kind := reflect.TypeOf(body).Kind()

	switch kind {
	case reflect.Struct, reflect.Map, reflect.Ptr:
		contentType = "application/json; charset=utf-8"
	case reflect.String:
		contentType = "text/plain; charset=utf-8"
	default:
		if b, ok := body.([]byte); ok {
			contentType = http.DetectContentType(b)
		} else if kind == reflect.Slice {
			contentType = "application/json; charset=utf-8"
		}
	}

	return contentType
}

// Ripped from https://github.com/gregjones/httpcache/blob/master/httpcache.go
type cacheControl map[string]string

func parseCacheControl(headers http.Header) cacheControl {
	cc := cacheControl{}
	ccHeader := headers.Get("Cache-Control")
	for _, part := range strings.Split(ccHeader, ",") {
		part = strings.Trim(part, " ")
		if part == "" {
			continue
		}
		if strings.ContainsRune(part, '=') {
			keyval := strings.Split(part, "=")
			cc[strings.Trim(keyval[0], " ")] = strings.Trim(keyval[1], ",")
		} else {
			cc[part] = ""
		}
	}
	return cc
}

// CacheExpires helper function to determine remaining time before repeating a request.
func CacheExpires(r *http.Response) time.Time {
	// Figure out when the cache expires.
	var expires time.Time
	now, err := time.Parse(time.RFC1123, r.Header.Get("date"))
	if err != nil {
		return time.Now()
	}
	respCacheControl := parseCacheControl(r.Header)

	if maxAge, ok := respCacheControl["max-age"]; ok {
		lifetime, err := time.ParseDuration(maxAge + "s")
		if err != nil {
			expires = now
		} else {
			expires = now.Add(lifetime)
		}
	} else {
		expiresHeader := r.Header.Get("Expires")
		if expiresHeader != "" {
			expires, err = time.Parse(time.RFC1123, expiresHeader)
			if err != nil {
				expires = now
			}
		}
	}
	return expires
}

func strlen(s string) int {
	return utf8.RuneCountInString(s)
}

// GenericOpenAPIError Provides access to the body, error and model on returned errors.
type GenericOpenAPIError struct {
	body  []byte
	error string
	model interface{}
}

// Error returns non-empty string if there was an error.
func (e GenericOpenAPIError) Error() string {
	return e.error
}

// Body returns the raw bytes of the response
func (e GenericOpenAPIError) Body() []byte {
	return e.body
}

// Model returns the unpacked model of the error
func (e GenericOpenAPIError) Model() interface{} {
	return e.model
}

// format error message using title and detail when model implements rfc7807
func formatErrorMessage(status string, v interface{}) string {
	str := ""
	metaValue := reflect.ValueOf(v).Elem()

	if metaValue.Kind() == reflect.Struct {
		field := metaValue.FieldByName("Title")
		if field != (reflect.Value{}) {
			str = fmt.Sprintf("%s", field.Interface())
		}

		field = metaValue.FieldByName("Detail")
		if field != (reflect.Value{}) {
			str = fmt.Sprintf("%s (%s)", str, field.Interface())
		}
	}

	return strings.TrimSpace(fmt.Sprintf("%s %s", status, str))
}