// Package drive provides access to the Drive API.
//
// See https://developers.google.com/drive/
//
// Usage example:
//
//   import "google.golang.org/api/drive/v1"
//   ...
//   driveService, err := drive.New(oauthHttpClient)
package drive

import (
	"bytes"
	"encoding/json"
	"errors"
	"fmt"
	"golang.org/x/net/context"
	"golang.org/x/net/context/ctxhttp"
	"google.golang.org/api/googleapi"
	"google.golang.org/api/internal"
	"io"
	"net/http"
	"net/url"
	"strconv"
	"strings"
)

// Always reference these packages, just in case the auto-generated code
// below doesn't.
var _ = bytes.NewBuffer
var _ = strconv.Itoa
var _ = fmt.Sprintf
var _ = json.NewDecoder
var _ = io.Copy
var _ = url.Parse
var _ = googleapi.Version
var _ = errors.New
var _ = strings.Replace

const apiId = "drive:v1"
const apiName = "drive"
const apiVersion = "v1"
const basePath = "https://www.googleapis.com/drive/v1/"

// OAuth2 scopes used by this API.
const (
	// View and manage Google Drive files and folders that you have opened
	// or created with this app
	DriveFileScope = "https://www.googleapis.com/auth/drive.file"
)

func New(client *http.Client) (*Service, error) {
	if client == nil {
		return nil, errors.New("client is nil")
	}
	s := &Service{client: client, BasePath: basePath}
	s.Files = NewFilesService(s)
	return s, nil
}

type Service struct {
	client    *http.Client
	BasePath  string // API endpoint base URL
	UserAgent string // optional additional User-Agent fragment

	Files *FilesService
}

func (s *Service) userAgent() string {
	if s.UserAgent == "" {
		return googleapi.UserAgent
	}
	return googleapi.UserAgent + " " + s.UserAgent
}

func NewFilesService(s *Service) *FilesService {
	rs := &FilesService{s: s}
	return rs
}

type FilesService struct {
	s *Service
}

// File: The metadata for a file.
type File struct {
	// CreatedDate: Create time for this file (formatted RFC 3339
	// timestamp).
	CreatedDate string `json:"createdDate,omitempty"`

	// Description: A short description of the file
	Description string `json:"description,omitempty"`

	DownloadUrl string `json:"downloadUrl,omitempty"`

	// Etag: ETag of the file.
	Etag string `json:"etag,omitempty"`

	// FileExtension: The file extension used when downloading this file.
	// This field is read only. To set the extension, include it on title
	// when creating the file. This will only be populated on files with
	// content stored in Drive.
	FileExtension string `json:"fileExtension,omitempty"`

	// FileSize: The size of the file in bytes. This will only be populated
	// on files with content stored in Drive.
	FileSize int64 `json:"fileSize,omitempty,string"`

	// Id: The id of the file.
	Id string `json:"id,omitempty"`

	// IndexableText: Indexable text attributes for the file (can only be
	// written)
	IndexableText *FileIndexableText `json:"indexableText,omitempty"`

	// Kind: The type of file. This is always drive#file
	Kind string `json:"kind,omitempty"`

	// Labels: Labels for the file.
	Labels *FileLabels `json:"labels,omitempty"`

	// LastViewedDate: Last time this file was viewed by the user (formatted
	// RFC 3339 timestamp).
	LastViewedDate string `json:"lastViewedDate,omitempty"`

	// Md5Checksum: An MD5 checksum for the content of this file. This will
	// only be populated on files with content stored in Drive.
	Md5Checksum string `json:"md5Checksum,omitempty"`

	// MimeType: The mimetype of the file
	MimeType string `json:"mimeType,omitempty"`

	// ModifiedByMeDate: Last time this file was modified by the user
	// (formatted RFC 3339 timestamp).
	ModifiedByMeDate string `json:"modifiedByMeDate,omitempty"`

	// ModifiedDate: Last time this file was modified by anyone (formatted
	// RFC 3339 timestamp).
	ModifiedDate string `json:"modifiedDate,omitempty"`

	// ParentsCollection: Collection of parent folders which contain this
	// file.
	// On insert, setting this field will put the file in all of the
	// provided folders. If no folders are provided, the file will be placed
	// in the default root folder. On update, this field is ignored.
	ParentsCollection []*FileParentsCollection `json:"parentsCollection,omitempty"`

	// SelfLink: A link back to this file.
	SelfLink string `json:"selfLink,omitempty"`

	// Title: The title of this file.
	Title string `json:"title,omitempty"`

	// UserPermission: The permissions for the authenticated user on this
	// file.
	UserPermission *Permission `json:"userPermission,omitempty"`

	// ForceSendFields is a list of field names (e.g. "CreatedDate") to
	// unconditionally include in API requests. By default, fields with
	// empty values are omitted from API requests. However, any non-pointer,
	// non-interface field appearing in ForceSendFields will be sent to the
	// server regardless of whether the field is empty or not. This may be
	// used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`
}

func (s *File) MarshalJSON() ([]byte, error) {
	type noMethod File
	raw := noMethod(*s)
	return internal.MarshalJSON(raw, s.ForceSendFields)
}

// FileIndexableText: Indexable text attributes for the file (can only
// be written)
type FileIndexableText struct {
	// Text: The text to be indexed for this file
	Text string `json:"text,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Text") to
	// unconditionally include in API requests. By default, fields with
	// empty values are omitted from API requests. However, any non-pointer,
	// non-interface field appearing in ForceSendFields will be sent to the
	// server regardless of whether the field is empty or not. This may be
	// used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`
}

func (s *FileIndexableText) MarshalJSON() ([]byte, error) {
	type noMethod FileIndexableText
	raw := noMethod(*s)
	return internal.MarshalJSON(raw, s.ForceSendFields)
}

// FileLabels: Labels for the file.
type FileLabels struct {
	// Hidden: Whether this file is hidden from the user
	Hidden bool `json:"hidden,omitempty"`

	// Starred: Whether this file is starred by the user.
	Starred bool `json:"starred,omitempty"`

	// Trashed: Whether this file has been trashed.
	Trashed bool `json:"trashed,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Hidden") to
	// unconditionally include in API requests. By default, fields with
	// empty values are omitted from API requests. However, any non-pointer,
	// non-interface field appearing in ForceSendFields will be sent to the
	// server regardless of whether the field is empty or not. This may be
	// used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`
}

func (s *FileLabels) MarshalJSON() ([]byte, error) {
	type noMethod FileLabels
	raw := noMethod(*s)
	return internal.MarshalJSON(raw, s.ForceSendFields)
}

type FileParentsCollection struct {
	// Id: The id of this parent
	Id string `json:"id,omitempty"`

	// ParentLink: A link to get the metadata for this parent
	ParentLink string `json:"parentLink,omitempty"`

	// ForceSendFields is a list of field names (e.g. "Id") to
	// unconditionally include in API requests. By default, fields with
	// empty values are omitted from API requests. However, any non-pointer,
	// non-interface field appearing in ForceSendFields will be sent to the
	// server regardless of whether the field is empty or not. This may be
	// used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`
}

func (s *FileParentsCollection) MarshalJSON() ([]byte, error) {
	type noMethod FileParentsCollection
	raw := noMethod(*s)
	return internal.MarshalJSON(raw, s.ForceSendFields)
}

// Permission: A single permission for a file.
type Permission struct {
	// AdditionalRoles: Any additional roles that this permission describes.
	AdditionalRoles []string `json:"additionalRoles,omitempty"`

	// Etag: An etag for this permission.
	Etag string `json:"etag,omitempty"`

	// Kind: The kind of this permission. This is always drive#permission
	Kind string `json:"kind,omitempty"`

	// Role: The role that this permission describes. (For example: reader,
	// writer, owner)
	Role string `json:"role,omitempty"`

	// Type: The type of permission (For example: user, group etc).
	Type string `json:"type,omitempty"`

	// ForceSendFields is a list of field names (e.g. "AdditionalRoles") to
	// unconditionally include in API requests. By default, fields with
	// empty values are omitted from API requests. However, any non-pointer,
	// non-interface field appearing in ForceSendFields will be sent to the
	// server regardless of whether the field is empty or not. This may be
	// used to include empty fields in Patch requests.
	ForceSendFields []string `json:"-"`
}

func (s *Permission) MarshalJSON() ([]byte, error) {
	type noMethod Permission
	raw := noMethod(*s)
	return internal.MarshalJSON(raw, s.ForceSendFields)
}

// method id "drive.files.get":

type FilesGetCall struct {
	s    *Service
	id   string
	opt_ map[string]interface{}
	ctx_ context.Context
}

// Get: Gets a file's metadata by id.
func (r *FilesService) Get(id string) *FilesGetCall {
	c := &FilesGetCall{s: r.s, opt_: make(map[string]interface{})}
	c.id = id
	return c
}

// Projection sets the optional parameter "projection": This parameter
// is deprecated and has no function.
//
// Possible values:
//   "BASIC" - Deprecated
//   "FULL" - Deprecated
func (c *FilesGetCall) Projection(projection string) *FilesGetCall {
	c.opt_["projection"] = projection
	return c
}

// UpdateViewedDate sets the optional parameter "updateViewedDate":
// Whether to update the view date after successfully retrieving the
// file.
func (c *FilesGetCall) UpdateViewedDate(updateViewedDate bool) *FilesGetCall {
	c.opt_["updateViewedDate"] = updateViewedDate
	return c
}

// Fields allows partial responses to be retrieved.
// See https://developers.google.com/gdata/docs/2.0/basics#PartialResponse
// for more information.
func (c *FilesGetCall) Fields(s ...googleapi.Field) *FilesGetCall {
	c.opt_["fields"] = googleapi.CombineFields(s)
	return c
}

// Context sets the context to be used in this call's Do method.
// Any pending HTTP request will be aborted if the provided context
// is canceled.
func (c *FilesGetCall) Context(ctx context.Context) *FilesGetCall {
	c.ctx_ = ctx
	return c
}

func (c *FilesGetCall) doRequest(alt string) (*http.Response, error) {
	var body io.Reader = nil
	params := make(url.Values)
	params.Set("alt", alt)
	if v, ok := c.opt_["projection"]; ok {
		params.Set("projection", fmt.Sprintf("%v", v))
	}
	if v, ok := c.opt_["updateViewedDate"]; ok {
		params.Set("updateViewedDate", fmt.Sprintf("%v", v))
	}
	if v, ok := c.opt_["fields"]; ok {
		params.Set("fields", fmt.Sprintf("%v", v))
	}
	urls := googleapi.ResolveRelative(c.s.BasePath, "files/{id}")
	urls += "?" + params.Encode()
	req, _ := http.NewRequest("GET", urls, body)
	googleapi.Expand(req.URL, map[string]string{
		"id": c.id,
	})
	req.Header.Set("User-Agent", c.s.userAgent())
	if c.ctx_ != nil {
		return ctxhttp.Do(c.ctx_, c.s.client, req)
	}
	return c.s.client.Do(req)
}

func (c *FilesGetCall) Do() (*File, error) {
	res, err := c.doRequest("json")
	if err != nil {
		return nil, err
	}
	defer googleapi.CloseBody(res)
	if err := googleapi.CheckResponse(res); err != nil {
		return nil, err
	}
	var ret *File
	if err := json.NewDecoder(res.Body).Decode(&ret); err != nil {
		return nil, err
	}
	return ret, nil
	// {
	//   "description": "Gets a file's metadata by id.",
	//   "httpMethod": "GET",
	//   "id": "drive.files.get",
	//   "parameterOrder": [
	//     "id"
	//   ],
	//   "parameters": {
	//     "id": {
	//       "description": "The id for the file in question.",
	//       "location": "path",
	//       "required": true,
	//       "type": "string"
	//     },
	//     "projection": {
	//       "description": "This parameter is deprecated and has no function.",
	//       "enum": [
	//         "BASIC",
	//         "FULL"
	//       ],
	//       "enumDescriptions": [
	//         "Deprecated",
	//         "Deprecated"
	//       ],
	//       "location": "query",
	//       "type": "string"
	//     },
	//     "updateViewedDate": {
	//       "default": "true",
	//       "description": "Whether to update the view date after successfully retrieving the file.",
	//       "location": "query",
	//       "type": "boolean"
	//     }
	//   },
	//   "path": "files/{id}",
	//   "response": {
	//     "$ref": "File"
	//   },
	//   "scopes": [
	//     "https://www.googleapis.com/auth/drive.file"
	//   ]
	// }

}

// method id "drive.files.insert":

type FilesInsertCall struct {
	s          *Service
	file       *File
	opt_       map[string]interface{}
	media_     io.Reader
	resumable_ googleapi.SizeReaderAt
	mediaType_ string
	protocol_  string
	ctx_       context.Context
}

// Insert: Inserts a file, and any settable metadata or blob content
// sent with the request.
func (r *FilesService) Insert(file *File) *FilesInsertCall {
	c := &FilesInsertCall{s: r.s, opt_: make(map[string]interface{})}
	c.file = file
	return c
}

// Media specifies the media to upload in a single chunk.
// At most one of Media and ResumableMedia may be set.
func (c *FilesInsertCall) Media(r io.Reader) *FilesInsertCall {
	c.media_ = r
	c.protocol_ = "multipart"
	return c
}

// ResumableMedia specifies the media to upload in chunks and can be canceled with ctx.
// At most one of Media and ResumableMedia may be set.
// mediaType identifies the MIME media type of the upload, such as "image/png".
// If mediaType is "", it will be auto-detected.
// The provided ctx will supersede any context previously provided to
// the Context method.
func (c *FilesInsertCall) ResumableMedia(ctx context.Context, r io.ReaderAt, size int64, mediaType string) *FilesInsertCall {
	c.ctx_ = ctx
	c.resumable_ = io.NewSectionReader(r, 0, size)
	c.mediaType_ = mediaType
	c.protocol_ = "resumable"
	return c
}

// ProgressUpdater provides a callback function that will be called after every chunk.
// It should be a low-latency function in order to not slow down the upload operation.
// This should only be called when using ResumableMedia (as opposed to Media).
func (c *FilesInsertCall) ProgressUpdater(pu googleapi.ProgressUpdater) *FilesInsertCall {
	c.opt_["progressUpdater"] = pu
	return c
}

// Fields allows partial responses to be retrieved.
// See https://developers.google.com/gdata/docs/2.0/basics#PartialResponse
// for more information.
func (c *FilesInsertCall) Fields(s ...googleapi.Field) *FilesInsertCall {
	c.opt_["fields"] = googleapi.CombineFields(s)
	return c
}

// Context sets the context to be used in this call's Do method.
// Any pending HTTP request will be aborted if the provided context
// is canceled.
// This context will supersede any context previously provided to
// the ResumableMedia method.
func (c *FilesInsertCall) Context(ctx context.Context) *FilesInsertCall {
	c.ctx_ = ctx
	return c
}

func (c *FilesInsertCall) doRequest(alt string) (*http.Response, error) {
	var body io.Reader = nil
	body, err := googleapi.WithoutDataWrapper.JSONReader(c.file)
	if err != nil {
		return nil, err
	}
	ctype := "application/json"
	params := make(url.Values)
	params.Set("alt", alt)
	if v, ok := c.opt_["fields"]; ok {
		params.Set("fields", fmt.Sprintf("%v", v))
	}
	urls := googleapi.ResolveRelative(c.s.BasePath, "files")
	if c.media_ != nil || c.resumable_ != nil {
		urls = strings.Replace(urls, "https://www.googleapis.com/", "https://www.googleapis.com/upload/", 1)
		params.Set("uploadType", c.protocol_)
	}
	urls += "?" + params.Encode()
	if c.protocol_ != "resumable" {
		var cancel func()
		cancel, _ = googleapi.ConditionallyIncludeMedia(c.media_, &body, &ctype)
		if cancel != nil {
			defer cancel()
		}
	}
	req, _ := http.NewRequest("POST", urls, body)
	googleapi.SetOpaque(req.URL)
	if c.protocol_ == "resumable" {
		if c.mediaType_ == "" {
			c.mediaType_ = googleapi.DetectMediaType(c.resumable_)
		}
		req.Header.Set("X-Upload-Content-Type", c.mediaType_)
		req.Header.Set("Content-Type", "application/json; charset=utf-8")
	} else {
		req.Header.Set("Content-Type", ctype)
	}
	req.Header.Set("User-Agent", c.s.userAgent())
	if c.ctx_ != nil {
		return ctxhttp.Do(c.ctx_, c.s.client, req)
	}
	return c.s.client.Do(req)
}

func (c *FilesInsertCall) Do() (*File, error) {
	res, err := c.doRequest("json")
	if err != nil {
		return nil, err
	}
	defer googleapi.CloseBody(res)
	if err := googleapi.CheckResponse(res); err != nil {
		return nil, err
	}
	var progressUpdater_ googleapi.ProgressUpdater
	if v, ok := c.opt_["progressUpdater"]; ok {
		if pu, ok := v.(googleapi.ProgressUpdater); ok {
			progressUpdater_ = pu
		}
	}
	if c.protocol_ == "resumable" {
		loc := res.Header.Get("Location")
		rx := &googleapi.ResumableUpload{
			Client:        c.s.client,
			UserAgent:     c.s.userAgent(),
			URI:           loc,
			Media:         c.resumable_,
			MediaType:     c.mediaType_,
			ContentLength: c.resumable_.Size(),
			Callback:      progressUpdater_,
		}
		res, err = rx.Upload(c.ctx_)
		if err != nil {
			return nil, err
		}
		defer res.Body.Close()
	}
	var ret *File
	if err := json.NewDecoder(res.Body).Decode(&ret); err != nil {
		return nil, err
	}
	return ret, nil
	// {
	//   "description": "Inserts a file, and any settable metadata or blob content sent with the request.",
	//   "httpMethod": "POST",
	//   "id": "drive.files.insert",
	//   "mediaUpload": {
	//     "accept": [
	//       "*/*"
	//     ],
	//     "maxSize": "5120GB",
	//     "protocols": {
	//       "resumable": {
	//         "multipart": true,
	//         "path": "/resumable/upload/drive/v1/files"
	//       },
	//       "simple": {
	//         "multipart": true,
	//         "path": "/upload/drive/v1/files"
	//       }
	//     }
	//   },
	//   "path": "files",
	//   "request": {
	//     "$ref": "File"
	//   },
	//   "response": {
	//     "$ref": "File"
	//   },
	//   "scopes": [
	//     "https://www.googleapis.com/auth/drive.file"
	//   ],
	//   "supportsMediaUpload": true
	// }

}

// method id "drive.files.patch":

type FilesPatchCall struct {
	s    *Service
	id   string
	file *File
	opt_ map[string]interface{}
	ctx_ context.Context
}

// Patch: Updates file metadata and/or content. This method supports
// patch semantics.
func (r *FilesService) Patch(id string, file *File) *FilesPatchCall {
	c := &FilesPatchCall{s: r.s, opt_: make(map[string]interface{})}
	c.id = id
	c.file = file
	return c
}

// NewRevision sets the optional parameter "newRevision": Whether a blob
// upload should create a new revision. If false, the blob data in the
// current head revision is replaced. If true or not set, a new blob is
// created as head revision, and previous unpinned revisions are
// preserved for a short period of time. Pinned revisions are stored
// indefinitely, using additional storage quota, up to a maximum of 200
// revisions.
func (c *FilesPatchCall) NewRevision(newRevision bool) *FilesPatchCall {
	c.opt_["newRevision"] = newRevision
	return c
}

// UpdateModifiedDate sets the optional parameter "updateModifiedDate":
// Controls updating the modified date of the file. If true, the
// modified date will be updated to the current time, regardless of
// whether other changes are being made. If false, the modified date
// will only be updated to the current time if other changes are also
// being made (changing the title, for example).
func (c *FilesPatchCall) UpdateModifiedDate(updateModifiedDate bool) *FilesPatchCall {
	c.opt_["updateModifiedDate"] = updateModifiedDate
	return c
}

// UpdateViewedDate sets the optional parameter "updateViewedDate":
// Whether to update the view date after successfully updating the file.
func (c *FilesPatchCall) UpdateViewedDate(updateViewedDate bool) *FilesPatchCall {
	c.opt_["updateViewedDate"] = updateViewedDate
	return c
}

// Fields allows partial responses to be retrieved.
// See https://developers.google.com/gdata/docs/2.0/basics#PartialResponse
// for more information.
func (c *FilesPatchCall) Fields(s ...googleapi.Field) *FilesPatchCall {
	c.opt_["fields"] = googleapi.CombineFields(s)
	return c
}

// Context sets the context to be used in this call's Do method.
// Any pending HTTP request will be aborted if the provided context
// is canceled.
func (c *FilesPatchCall) Context(ctx context.Context) *FilesPatchCall {
	c.ctx_ = ctx
	return c
}

func (c *FilesPatchCall) doRequest(alt string) (*http.Response, error) {
	var body io.Reader = nil
	body, err := googleapi.WithoutDataWrapper.JSONReader(c.file)
	if err != nil {
		return nil, err
	}
	ctype := "application/json"
	params := make(url.Values)
	params.Set("alt", alt)
	if v, ok := c.opt_["newRevision"]; ok {
		params.Set("newRevision", fmt.Sprintf("%v", v))
	}
	if v, ok := c.opt_["updateModifiedDate"]; ok {
		params.Set("updateModifiedDate", fmt.Sprintf("%v", v))
	}
	if v, ok := c.opt_["updateViewedDate"]; ok {
		params.Set("updateViewedDate", fmt.Sprintf("%v", v))
	}
	if v, ok := c.opt_["fields"]; ok {
		params.Set("fields", fmt.Sprintf("%v", v))
	}
	urls := googleapi.ResolveRelative(c.s.BasePath, "files/{id}")
	urls += "?" + params.Encode()
	req, _ := http.NewRequest("PATCH", urls, body)
	googleapi.Expand(req.URL, map[string]string{
		"id": c.id,
	})
	req.Header.Set("Content-Type", ctype)
	req.Header.Set("User-Agent", c.s.userAgent())
	if c.ctx_ != nil {
		return ctxhttp.Do(c.ctx_, c.s.client, req)
	}
	return c.s.client.Do(req)
}

func (c *FilesPatchCall) Do() (*File, error) {
	res, err := c.doRequest("json")
	if err != nil {
		return nil, err
	}
	defer googleapi.CloseBody(res)
	if err := googleapi.CheckResponse(res); err != nil {
		return nil, err
	}
	var ret *File
	if err := json.NewDecoder(res.Body).Decode(&ret); err != nil {
		return nil, err
	}
	return ret, nil
	// {
	//   "description": "Updates file metadata and/or content. This method supports patch semantics.",
	//   "httpMethod": "PATCH",
	//   "id": "drive.files.patch",
	//   "parameterOrder": [
	//     "id"
	//   ],
	//   "parameters": {
	//     "id": {
	//       "description": "The id for the file in question.",
	//       "location": "path",
	//       "required": true,
	//       "type": "string"
	//     },
	//     "newRevision": {
	//       "default": "true",
	//       "description": "Whether a blob upload should create a new revision. If false, the blob data in the current head revision is replaced. If true or not set, a new blob is created as head revision, and previous unpinned revisions are preserved for a short period of time. Pinned revisions are stored indefinitely, using additional storage quota, up to a maximum of 200 revisions.",
	//       "location": "query",
	//       "type": "boolean"
	//     },
	//     "updateModifiedDate": {
	//       "default": "false",
	//       "description": "Controls updating the modified date of the file. If true, the modified date will be updated to the current time, regardless of whether other changes are being made. If false, the modified date will only be updated to the current time if other changes are also being made (changing the title, for example).",
	//       "location": "query",
	//       "type": "boolean"
	//     },
	//     "updateViewedDate": {
	//       "default": "true",
	//       "description": "Whether to update the view date after successfully updating the file.",
	//       "location": "query",
	//       "type": "boolean"
	//     }
	//   },
	//   "path": "files/{id}",
	//   "request": {
	//     "$ref": "File"
	//   },
	//   "response": {
	//     "$ref": "File"
	//   },
	//   "scopes": [
	//     "https://www.googleapis.com/auth/drive.file"
	//   ]
	// }

}

// method id "drive.files.update":

type FilesUpdateCall struct {
	s          *Service
	id         string
	file       *File
	opt_       map[string]interface{}
	media_     io.Reader
	resumable_ googleapi.SizeReaderAt
	mediaType_ string
	protocol_  string
	ctx_       context.Context
}

// Update: Updates file metadata and/or content
func (r *FilesService) Update(id string, file *File) *FilesUpdateCall {
	c := &FilesUpdateCall{s: r.s, opt_: make(map[string]interface{})}
	c.id = id
	c.file = file
	return c
}

// NewRevision sets the optional parameter "newRevision": Whether a blob
// upload should create a new revision. If false, the blob data in the
// current head revision is replaced. If true or not set, a new blob is
// created as head revision, and previous unpinned revisions are
// preserved for a short period of time. Pinned revisions are stored
// indefinitely, using additional storage quota, up to a maximum of 200
// revisions.
func (c *FilesUpdateCall) NewRevision(newRevision bool) *FilesUpdateCall {
	c.opt_["newRevision"] = newRevision
	return c
}

// UpdateModifiedDate sets the optional parameter "updateModifiedDate":
// Controls updating the modified date of the file. If true, the
// modified date will be updated to the current time, regardless of
// whether other changes are being made. If false, the modified date
// will only be updated to the current time if other changes are also
// being made (changing the title, for example).
func (c *FilesUpdateCall) UpdateModifiedDate(updateModifiedDate bool) *FilesUpdateCall {
	c.opt_["updateModifiedDate"] = updateModifiedDate
	return c
}

// UpdateViewedDate sets the optional parameter "updateViewedDate":
// Whether to update the view date after successfully updating the file.
func (c *FilesUpdateCall) UpdateViewedDate(updateViewedDate bool) *FilesUpdateCall {
	c.opt_["updateViewedDate"] = updateViewedDate
	return c
}

// Media specifies the media to upload in a single chunk.
// At most one of Media and ResumableMedia may be set.
func (c *FilesUpdateCall) Media(r io.Reader) *FilesUpdateCall {
	c.media_ = r
	c.protocol_ = "multipart"
	return c
}

// ResumableMedia specifies the media to upload in chunks and can be canceled with ctx.
// At most one of Media and ResumableMedia may be set.
// mediaType identifies the MIME media type of the upload, such as "image/png".
// If mediaType is "", it will be auto-detected.
// The provided ctx will supersede any context previously provided to
// the Context method.
func (c *FilesUpdateCall) ResumableMedia(ctx context.Context, r io.ReaderAt, size int64, mediaType string) *FilesUpdateCall {
	c.ctx_ = ctx
	c.resumable_ = io.NewSectionReader(r, 0, size)
	c.mediaType_ = mediaType
	c.protocol_ = "resumable"
	return c
}

// ProgressUpdater provides a callback function that will be called after every chunk.
// It should be a low-latency function in order to not slow down the upload operation.
// This should only be called when using ResumableMedia (as opposed to Media).
func (c *FilesUpdateCall) ProgressUpdater(pu googleapi.ProgressUpdater) *FilesUpdateCall {
	c.opt_["progressUpdater"] = pu
	return c
}

// Fields allows partial responses to be retrieved.
// See https://developers.google.com/gdata/docs/2.0/basics#PartialResponse
// for more information.
func (c *FilesUpdateCall) Fields(s ...googleapi.Field) *FilesUpdateCall {
	c.opt_["fields"] = googleapi.CombineFields(s)
	return c
}

// Context sets the context to be used in this call's Do method.
// Any pending HTTP request will be aborted if the provided context
// is canceled.
// This context will supersede any context previously provided to
// the ResumableMedia method.
func (c *FilesUpdateCall) Context(ctx context.Context) *FilesUpdateCall {
	c.ctx_ = ctx
	return c
}

func (c *FilesUpdateCall) doRequest(alt string) (*http.Response, error) {
	var body io.Reader = nil
	body, err := googleapi.WithoutDataWrapper.JSONReader(c.file)
	if err != nil {
		return nil, err
	}
	ctype := "application/json"
	params := make(url.Values)
	params.Set("alt", alt)
	if v, ok := c.opt_["newRevision"]; ok {
		params.Set("newRevision", fmt.Sprintf("%v", v))
	}
	if v, ok := c.opt_["updateModifiedDate"]; ok {
		params.Set("updateModifiedDate", fmt.Sprintf("%v", v))
	}
	if v, ok := c.opt_["updateViewedDate"]; ok {
		params.Set("updateViewedDate", fmt.Sprintf("%v", v))
	}
	if v, ok := c.opt_["fields"]; ok {
		params.Set("fields", fmt.Sprintf("%v", v))
	}
	urls := googleapi.ResolveRelative(c.s.BasePath, "files/{id}")
	if c.media_ != nil || c.resumable_ != nil {
		urls = strings.Replace(urls, "https://www.googleapis.com/", "https://www.googleapis.com/upload/", 1)
		params.Set("uploadType", c.protocol_)
	}
	urls += "?" + params.Encode()
	if c.protocol_ != "resumable" {
		var cancel func()
		cancel, _ = googleapi.ConditionallyIncludeMedia(c.media_, &body, &ctype)
		if cancel != nil {
			defer cancel()
		}
	}
	req, _ := http.NewRequest("PUT", urls, body)
	googleapi.Expand(req.URL, map[string]string{
		"id": c.id,
	})
	if c.protocol_ == "resumable" {
		if c.mediaType_ == "" {
			c.mediaType_ = googleapi.DetectMediaType(c.resumable_)
		}
		req.Header.Set("X-Upload-Content-Type", c.mediaType_)
		req.Header.Set("Content-Type", "application/json; charset=utf-8")
	} else {
		req.Header.Set("Content-Type", ctype)
	}
	req.Header.Set("User-Agent", c.s.userAgent())
	if c.ctx_ != nil {
		return ctxhttp.Do(c.ctx_, c.s.client, req)
	}
	return c.s.client.Do(req)
}

func (c *FilesUpdateCall) Do() (*File, error) {
	res, err := c.doRequest("json")
	if err != nil {
		return nil, err
	}
	defer googleapi.CloseBody(res)
	if err := googleapi.CheckResponse(res); err != nil {
		return nil, err
	}
	var progressUpdater_ googleapi.ProgressUpdater
	if v, ok := c.opt_["progressUpdater"]; ok {
		if pu, ok := v.(googleapi.ProgressUpdater); ok {
			progressUpdater_ = pu
		}
	}
	if c.protocol_ == "resumable" {
		loc := res.Header.Get("Location")
		rx := &googleapi.ResumableUpload{
			Client:        c.s.client,
			UserAgent:     c.s.userAgent(),
			URI:           loc,
			Media:         c.resumable_,
			MediaType:     c.mediaType_,
			ContentLength: c.resumable_.Size(),
			Callback:      progressUpdater_,
		}
		res, err = rx.Upload(c.ctx_)
		if err != nil {
			return nil, err
		}
		defer res.Body.Close()
	}
	var ret *File
	if err := json.NewDecoder(res.Body).Decode(&ret); err != nil {
		return nil, err
	}
	return ret, nil
	// {
	//   "description": "Updates file metadata and/or content",
	//   "httpMethod": "PUT",
	//   "id": "drive.files.update",
	//   "mediaUpload": {
	//     "accept": [
	//       "*/*"
	//     ],
	//     "maxSize": "5120GB",
	//     "protocols": {
	//       "resumable": {
	//         "multipart": true,
	//         "path": "/resumable/upload/drive/v1/files/{id}"
	//       },
	//       "simple": {
	//         "multipart": true,
	//         "path": "/upload/drive/v1/files/{id}"
	//       }
	//     }
	//   },
	//   "parameterOrder": [
	//     "id"
	//   ],
	//   "parameters": {
	//     "id": {
	//       "description": "The id for the file in question.",
	//       "location": "path",
	//       "required": true,
	//       "type": "string"
	//     },
	//     "newRevision": {
	//       "default": "true",
	//       "description": "Whether a blob upload should create a new revision. If false, the blob data in the current head revision is replaced. If true or not set, a new blob is created as head revision, and previous unpinned revisions are preserved for a short period of time. Pinned revisions are stored indefinitely, using additional storage quota, up to a maximum of 200 revisions.",
	//       "location": "query",
	//       "type": "boolean"
	//     },
	//     "updateModifiedDate": {
	//       "default": "false",
	//       "description": "Controls updating the modified date of the file. If true, the modified date will be updated to the current time, regardless of whether other changes are being made. If false, the modified date will only be updated to the current time if other changes are also being made (changing the title, for example).",
	//       "location": "query",
	//       "type": "boolean"
	//     },
	//     "updateViewedDate": {
	//       "default": "true",
	//       "description": "Whether to update the view date after successfully updating the file.",
	//       "location": "query",
	//       "type": "boolean"
	//     }
	//   },
	//   "path": "files/{id}",
	//   "request": {
	//     "$ref": "File"
	//   },
	//   "response": {
	//     "$ref": "File"
	//   },
	//   "scopes": [
	//     "https://www.googleapis.com/auth/drive.file"
	//   ],
	//   "supportsMediaUpload": true
	// }

}