// Package admin provides access to the Email Migration API v2.
//
// See https://developers.google.com/admin-sdk/email-migration/v2/
//
// Usage example:
//
//   import "google.golang.org/api/admin/email_migration_v2"
//   ...
//   adminService, err := admin.New(oauthHttpClient)
package admin

import (
	"bytes"
	"encoding/json"
	"errors"
	"fmt"
	"golang.org/x/net/context"
	"google.golang.org/api/googleapi"
	"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
var _ = context.Background

const apiId = "admin:email_migration_v2"
const apiName = "admin"
const apiVersion = "email_migration_v2"
const basePath = "https://www.googleapis.com/email/v2/users/"

// OAuth2 scopes used by this API.
const (
	// Manage email messages of users on your domain
	EmailMigrationScope = "https://www.googleapis.com/auth/email.migration"
)

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

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

	Mail *MailService
}

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

func NewMailService(s *Service) *MailService {
	rs := &MailService{s: s}
	return rs
}

type MailService struct {
	s *Service
}

type MailItem struct {
	// IsDeleted: Boolean indicating if the mail is deleted (used in Vault)
	IsDeleted bool `json:"isDeleted,omitempty"`

	// IsDraft: Boolean indicating if the mail is draft
	IsDraft bool `json:"isDraft,omitempty"`

	// IsInbox: Boolean indicating if the mail is in inbox
	IsInbox bool `json:"isInbox,omitempty"`

	// IsSent: Boolean indicating if the mail is in 'sent mails'
	IsSent bool `json:"isSent,omitempty"`

	// IsStarred: Boolean indicating if the mail is starred
	IsStarred bool `json:"isStarred,omitempty"`

	// IsTrash: Boolean indicating if the mail is in trash
	IsTrash bool `json:"isTrash,omitempty"`

	// IsUnread: Boolean indicating if the mail is unread
	IsUnread bool `json:"isUnread,omitempty"`

	// Kind: Kind of resource this is.
	Kind string `json:"kind,omitempty"`

	// Labels: List of labels (strings)
	Labels []string `json:"labels,omitempty"`
}

// method id "emailMigration.mail.insert":

type MailInsertCall struct {
	s          *Service
	userKey    string
	mailitem   *MailItem
	opt_       map[string]interface{}
	media_     io.Reader
	resumable_ googleapi.SizeReaderAt
	mediaType_ string
	ctx_       context.Context
	protocol_  string
}

// Insert: Insert Mail into Google's Gmail backends
func (r *MailService) Insert(userKey string, mailitem *MailItem) *MailInsertCall {
	c := &MailInsertCall{s: r.s, opt_: make(map[string]interface{})}
	c.userKey = userKey
	c.mailitem = mailitem
	return c
}

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

// ResumableMedia specifies the media to upload in chunks and can be cancelled 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.
func (c *MailInsertCall) ResumableMedia(ctx context.Context, r io.ReaderAt, size int64, mediaType string) *MailInsertCall {
	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 *MailInsertCall) ProgressUpdater(pu googleapi.ProgressUpdater) *MailInsertCall {
	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 *MailInsertCall) Fields(s ...googleapi.Field) *MailInsertCall {
	c.opt_["fields"] = googleapi.CombineFields(s)
	return c
}

func (c *MailInsertCall) Do() error {
	var body io.Reader = nil
	body, err := googleapi.WithoutDataWrapper.JSONReader(c.mailitem)
	if err != nil {
		return err
	}
	ctype := "application/json"
	params := make(url.Values)
	params.Set("alt", "json")
	if v, ok := c.opt_["fields"]; ok {
		params.Set("fields", fmt.Sprintf("%v", v))
	}
	urls := googleapi.ResolveRelative(c.s.BasePath, "{userKey}/mail")
	var progressUpdater_ googleapi.ProgressUpdater
	if v, ok := c.opt_["progressUpdater"]; ok {
		if pu, ok := v.(googleapi.ProgressUpdater); ok {
			progressUpdater_ = pu
		}
	}
	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.Expand(req.URL, map[string]string{
		"userKey": c.userKey,
	})
	if c.protocol_ == "resumable" {
		req.ContentLength = 0
		if c.mediaType_ == "" {
			c.mediaType_ = googleapi.DetectMediaType(c.resumable_)
		}
		req.Header.Set("X-Upload-Content-Type", c.mediaType_)
		req.Body = nil
	} else {
		req.Header.Set("Content-Type", ctype)
	}
	req.Header.Set("User-Agent", c.s.userAgent())
	res, err := c.s.client.Do(req)
	if err != nil {
		return err
	}
	defer googleapi.CloseBody(res)
	if err := googleapi.CheckResponse(res); err != nil {
		return err
	}
	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 err
		}
		defer res.Body.Close()
	}
	return nil
	// {
	//   "description": "Insert Mail into Google's Gmail backends",
	//   "httpMethod": "POST",
	//   "id": "emailMigration.mail.insert",
	//   "mediaUpload": {
	//     "accept": [
	//       "message/rfc822"
	//     ],
	//     "maxSize": "35MB",
	//     "protocols": {
	//       "resumable": {
	//         "multipart": true,
	//         "path": "/resumable/upload/email/v2/users/{userKey}/mail"
	//       },
	//       "simple": {
	//         "multipart": true,
	//         "path": "/upload/email/v2/users/{userKey}/mail"
	//       }
	//     }
	//   },
	//   "parameterOrder": [
	//     "userKey"
	//   ],
	//   "parameters": {
	//     "userKey": {
	//       "description": "The email or immutable id of the user",
	//       "location": "path",
	//       "required": true,
	//       "type": "string"
	//     }
	//   },
	//   "path": "{userKey}/mail",
	//   "request": {
	//     "$ref": "MailItem"
	//   },
	//   "scopes": [
	//     "https://www.googleapis.com/auth/email.migration"
	//   ],
	//   "supportsMediaUpload": true
	// }

}