api_client.go

/*
 * EVE Swagger Interface
 *
 * An OpenAPI for EVE Online
 *
 * OpenAPI spec version: 0.3.10.dev12
 *
 * Generated by: https://github.com/swagger-api/swagger-codegen.git
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package evesi

import (
	"bytes"
	"encoding/json"
	"encoding/xml"
	"errors"
	"fmt"
	"golang.org/x/net/context"
	"golang.org/x/oauth2"
	"io"
	"mime/multipart"
	"net/http"
	"net/url"
	"os"
	"path/filepath"
	"reflect"
	"regexp"
	"strings"
	"time"
	"unicode/utf8"
)

var (
	jsonCheck = regexp.MustCompile("(?i:[application|text]/json)")
	xmlCheck  = regexp.MustCompile("(?i:[application|text]/xml)")
)

// APIClient manages communication with the EVE Swagger Interface API v0.3.10.dev12
// In most cases there should be only one, shared, APIClient.
type APIClient struct {
	client    *http.Client // The HTTP client.
	userAgent string       // User Agent
	common    service      // Reuse a single struct instead of allocating one for each service on the heap.
	basePath  string       //

	// API Services
	AllianceApi             *AllianceApiService
	AssetsApi               *AssetsApiService
	BookmarksApi            *BookmarksApiService
	CalendarApi             *CalendarApiService
	CharacterApi            *CharacterApiService
	ClonesApi               *ClonesApiService
	ContactsApi             *ContactsApiService
	CorporationApi          *CorporationApiService
	FittingsApi             *FittingsApiService
	FleetsApi               *FleetsApiService
	IncursionsApi           *IncursionsApiService
	IndustryApi             *IndustryApiService
	InsuranceApi            *InsuranceApiService
	KillmailsApi            *KillmailsApiService
	LocationApi             *LocationApiService
	MailApi                 *MailApiService
	MarketApi               *MarketApiService
	PlanetaryInteractionApi *PlanetaryInteractionApiService
	SearchApi               *SearchApiService
	SkillsApi               *SkillsApiService
	SovereigntyApi          *SovereigntyApiService
	UniverseApi             *UniverseApiService
	UserInterfaceApi        *UserInterfaceApiService
	WalletApi               *WalletApiService
	WarsApi                 *WarsApiService
}

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(httpClient *http.Client, userAgent string) *APIClient {
	if httpClient == nil {
		httpClient = http.DefaultClient
	}

	c := &APIClient{}
	c.client = httpClient
	c.basePath = "https://esi.tech.ccp.is/latest"
	c.userAgent = userAgent
	c.common.client = c

	// API Services
	c.AllianceApi = (*AllianceApiService)(&c.common)
	// API Services
	c.AssetsApi = (*AssetsApiService)(&c.common)
	// API Services
	c.BookmarksApi = (*BookmarksApiService)(&c.common)
	// API Services
	c.CalendarApi = (*CalendarApiService)(&c.common)
	// API Services
	c.CharacterApi = (*CharacterApiService)(&c.common)
	// API Services
	c.ClonesApi = (*ClonesApiService)(&c.common)
	// API Services
	c.ContactsApi = (*ContactsApiService)(&c.common)
	// API Services
	c.CorporationApi = (*CorporationApiService)(&c.common)
	// API Services
	c.FittingsApi = (*FittingsApiService)(&c.common)
	// API Services
	c.FleetsApi = (*FleetsApiService)(&c.common)
	// API Services
	c.IncursionsApi = (*IncursionsApiService)(&c.common)
	// API Services
	c.IndustryApi = (*IndustryApiService)(&c.common)
	// API Services
	c.InsuranceApi = (*InsuranceApiService)(&c.common)
	// API Services
	c.KillmailsApi = (*KillmailsApiService)(&c.common)
	// API Services
	c.LocationApi = (*LocationApiService)(&c.common)
	// API Services
	c.MailApi = (*MailApiService)(&c.common)
	// API Services
	c.MarketApi = (*MarketApiService)(&c.common)
	// API Services
	c.PlanetaryInteractionApi = (*PlanetaryInteractionApiService)(&c.common)
	// API Services
	c.SearchApi = (*SearchApiService)(&c.common)
	// API Services
	c.SkillsApi = (*SkillsApiService)(&c.common)
	// API Services
	c.SovereigntyApi = (*SovereigntyApiService)(&c.common)
	// API Services
	c.UniverseApi = (*UniverseApiService)(&c.common)
	// API Services
	c.UserInterfaceApi = (*UserInterfaceApiService)(&c.common)
	// API Services
	c.WalletApi = (*WalletApiService)(&c.common)
	// API Services
	c.WarsApi = (*WarsApiService)(&c.common)

	return c
}

// 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 insenstive match, finding needle in a haystack
func contains(haystack []string, needle string) bool {
	for _, a := range haystack {
		if strings.ToLower(a) == strings.ToLower(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
}

// parameterToString convert interface{} parameters to string, using a delimiter if format is provided.
func parameterToString(obj interface{}, collectionFormat string) string {
	var delimiter string

	switch collectionFormat {
	case "pipes":
		delimiter = "|"
	case "ssv":
		delimiter = " "
	case "tsv":
		delimiter = "\t"
	case "csv":
		delimiter = ","
	}

	if reflect.TypeOf(obj).Kind() == reflect.Slice {
		return strings.Trim(strings.Replace(fmt.Sprint(obj), " ", delimiter, -1), "[]")
	}

	return fmt.Sprintf("%v", obj)
}

// callAPI do the request.
func (c *APIClient) callAPI(request *http.Request) (*http.Response, error) {
	return c.client.Do(request)
}

// Change base path to allow switching to mocks
func (c *APIClient) ChangeBasePath(path string) {
	c.basePath = path
}

// 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,
	fileName string,
	fileBytes []byte) (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 paramters and file if available.
	if len(formParams) > 0 || (len(fileBytes) > 0 && fileName != "") {
		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)
				}
			}
		}
		if len(fileBytes) > 0 && fileName != "" {
			w.Boundary()
			//_, fileNm := filepath.Split(fileName)
			part, err := w.CreateFormFile("file", filepath.Base(fileName))
			if err != nil {
				return nil, err
			}
			_, err = part.Write(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()
	}

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

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

	// Encode the parameters.
	url.RawQuery = query.Encode()

	// 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.Set(h, v)
		}
		localVarRequest.Header = headers
	}

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

	// Walk through any authentication.
	if ctx != nil {
		// OAuth2 authentication
		if tok, ok := ctx.Value(ContextOAuth2).(oauth2.TokenSource); ok {
			// We were able to grab an oauth2 token from the context
			var latestToken *oauth2.Token
			if latestToken, err = tok.Token(); err != nil {
				return nil, err
			}

			latestToken.SetAuthHeader(localVarRequest)
		}

		// Basic HTTP Authentication
		if auth, ok := ctx.Value(ContextBasicAuth).(BasicAuth); ok {
			localVarRequest.SetBasicAuth(auth.UserName, auth.Password)
		}

		// [TODO] API Key Authentication
	}

	return localVarRequest, nil
}

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

	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...)
}

// 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 b, ok := body.([]byte); ok {
		_, err = bodyBuf.Write(b)
	} 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) {
		xml.NewEncoder(bodyBuf).Encode(body)
	}

	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
		}
		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)
}

// Custom date type for Swagger date.
type SwaggerDateType struct {
	time.Time
}

const swaggerDateTypeLayout = "2006-01-02"

func (c *SwaggerDateType) UnmarshalJSON(b []byte) (err error) {
	c.Time, err = c.parseTime(string(b))
	return
}

func (c *SwaggerDateType) UnmarshalXML(d *xml.Decoder, start xml.StartElement) (err error) {
	var t string
	d.DecodeElement(&t, &start)
	c.Time, err = c.parseTime(t)
	return
}

func (c *SwaggerDateType) UnmarshalXMLAttr(a xml.Attr) (err error) {
	c.Time, err = c.parseTime(a.Value)
	return err
}

func (c *SwaggerDateType) parseTime(t string) (r time.Time, err error) {
	t = strings.Replace(t, `"`, "", -1)
	r, err = time.Parse(swaggerDateTypeLayout, t)
	if err != nil {
		r, err = time.Parse(time.RFC3339, t)
		if err != nil {
			r, err = time.Parse(time.RFC3339Nano, t)
		}
	}
	return r, err
}