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|
package slack
import (
"context"
"encoding/json"
"fmt"
"io"
"net/url"
"strconv"
"strings"
)
const (
// Add here the defaults in the siten
DEFAULT_FILES_USER = ""
DEFAULT_FILES_CHANNEL = ""
DEFAULT_FILES_TS_FROM = 0
DEFAULT_FILES_TS_TO = -1
DEFAULT_FILES_TYPES = "all"
DEFAULT_FILES_COUNT = 100
DEFAULT_FILES_PAGE = 1
DEFAULT_FILES_SHOW_HIDDEN = false
)
// File contains all the information for a file
type File struct {
ID string `json:"id"`
Created JSONTime `json:"created"`
Timestamp JSONTime `json:"timestamp"`
Name string `json:"name"`
Title string `json:"title"`
Mimetype string `json:"mimetype"`
ImageExifRotation int `json:"image_exif_rotation"`
Filetype string `json:"filetype"`
PrettyType string `json:"pretty_type"`
User string `json:"user"`
Mode string `json:"mode"`
Editable bool `json:"editable"`
IsExternal bool `json:"is_external"`
ExternalType string `json:"external_type"`
Size int `json:"size"`
URL string `json:"url"` // Deprecated - never set
URLDownload string `json:"url_download"` // Deprecated - never set
URLPrivate string `json:"url_private"`
URLPrivateDownload string `json:"url_private_download"`
OriginalH int `json:"original_h"`
OriginalW int `json:"original_w"`
Thumb64 string `json:"thumb_64"`
Thumb80 string `json:"thumb_80"`
Thumb160 string `json:"thumb_160"`
Thumb360 string `json:"thumb_360"`
Thumb360Gif string `json:"thumb_360_gif"`
Thumb360W int `json:"thumb_360_w"`
Thumb360H int `json:"thumb_360_h"`
Thumb480 string `json:"thumb_480"`
Thumb480W int `json:"thumb_480_w"`
Thumb480H int `json:"thumb_480_h"`
Thumb720 string `json:"thumb_720"`
Thumb720W int `json:"thumb_720_w"`
Thumb720H int `json:"thumb_720_h"`
Thumb960 string `json:"thumb_960"`
Thumb960W int `json:"thumb_960_w"`
Thumb960H int `json:"thumb_960_h"`
Thumb1024 string `json:"thumb_1024"`
Thumb1024W int `json:"thumb_1024_w"`
Thumb1024H int `json:"thumb_1024_h"`
Permalink string `json:"permalink"`
PermalinkPublic string `json:"permalink_public"`
EditLink string `json:"edit_link"`
Preview string `json:"preview"`
PreviewHighlight string `json:"preview_highlight"`
Lines int `json:"lines"`
LinesMore int `json:"lines_more"`
IsPublic bool `json:"is_public"`
PublicURLShared bool `json:"public_url_shared"`
Channels []string `json:"channels"`
Groups []string `json:"groups"`
IMs []string `json:"ims"`
InitialComment Comment `json:"initial_comment"`
CommentsCount int `json:"comments_count"`
NumStars int `json:"num_stars"`
IsStarred bool `json:"is_starred"`
Shares Share `json:"shares"`
}
type Share struct {
Public map[string][]ShareFileInfo `json:"public"`
Private map[string][]ShareFileInfo `json:"private"`
}
type ShareFileInfo struct {
ReplyUsers []string `json:"reply_users"`
ReplyUsersCount int `json:"reply_users_count"`
ReplyCount int `json:"reply_count"`
Ts string `json:"ts"`
ThreadTs string `json:"thread_ts"`
LatestReply string `json:"latest_reply"`
ChannelName string `json:"channel_name"`
TeamID string `json:"team_id"`
}
// FileUploadParameters contains all the parameters necessary (including the optional ones) for an UploadFile() request.
//
// There are three ways to upload a file. You can either set Content if file is small, set Reader if file is large,
// or provide a local file path in File to upload it from your filesystem.
//
// Note that when using the Reader option, you *must* specify the Filename, otherwise the Slack API isn't happy.
type FileUploadParameters struct {
File string
Content string
Reader io.Reader
Filetype string
Filename string
Title string
InitialComment string
Channels []string
ThreadTimestamp string
}
// GetFilesParameters contains all the parameters necessary (including the optional ones) for a GetFiles() request
type GetFilesParameters struct {
User string
Channel string
TimestampFrom JSONTime
TimestampTo JSONTime
Types string
Count int
Page int
ShowHidden bool
}
// ListFilesParameters contains all the parameters necessary (including the optional ones) for a ListFiles() request
type ListFilesParameters struct {
Limit int
User string
Channel string
Types string
Cursor string
}
type UploadFileV2Parameters struct {
File string
FileSize int
Content string
Reader io.Reader
Filename string
Title string
InitialComment string
Channel string
ThreadTimestamp string
AltTxt string
SnippetText string
}
type getUploadURLExternalParameters struct {
altText string
fileSize int
fileName string
snippetText string
}
type getUploadURLExternalResponse struct {
UploadURL string `json:"upload_url"`
FileID string `json:"file_id"`
SlackResponse
}
type uploadToURLParameters struct {
UploadURL string
Reader io.Reader
File string
Content string
Filename string
}
type FileSummary struct {
ID string `json:"id"`
Title string `json:"title"`
}
type completeUploadExternalParameters struct {
title string
channel string
initialComment string
threadTimestamp string
}
type completeUploadExternalResponse struct {
SlackResponse
Files []FileSummary `json:"files"`
}
type fileResponseFull struct {
File `json:"file"`
Paging `json:"paging"`
Comments []Comment `json:"comments"`
Files []File `json:"files"`
Metadata ResponseMetadata `json:"response_metadata"`
SlackResponse
}
// NewGetFilesParameters provides an instance of GetFilesParameters with all the sane default values set
func NewGetFilesParameters() GetFilesParameters {
return GetFilesParameters{
User: DEFAULT_FILES_USER,
Channel: DEFAULT_FILES_CHANNEL,
TimestampFrom: DEFAULT_FILES_TS_FROM,
TimestampTo: DEFAULT_FILES_TS_TO,
Types: DEFAULT_FILES_TYPES,
Count: DEFAULT_FILES_COUNT,
Page: DEFAULT_FILES_PAGE,
ShowHidden: DEFAULT_FILES_SHOW_HIDDEN,
}
}
func (api *Client) fileRequest(ctx context.Context, path string, values url.Values) (*fileResponseFull, error) {
response := &fileResponseFull{}
err := api.postMethod(ctx, path, values, response)
if err != nil {
return nil, err
}
return response, response.Err()
}
// GetFileInfo retrieves a file and related comments
func (api *Client) GetFileInfo(fileID string, count, page int) (*File, []Comment, *Paging, error) {
return api.GetFileInfoContext(context.Background(), fileID, count, page)
}
// GetFileInfoContext retrieves a file and related comments with a custom context
func (api *Client) GetFileInfoContext(ctx context.Context, fileID string, count, page int) (*File, []Comment, *Paging, error) {
values := url.Values{
"token": {api.token},
"file": {fileID},
"count": {strconv.Itoa(count)},
"page": {strconv.Itoa(page)},
}
response, err := api.fileRequest(ctx, "files.info", values)
if err != nil {
return nil, nil, nil, err
}
return &response.File, response.Comments, &response.Paging, nil
}
// GetFile retreives a given file from its private download URL
func (api *Client) GetFile(downloadURL string, writer io.Writer) error {
return api.GetFileContext(context.Background(), downloadURL, writer)
}
// GetFileContext retreives a given file from its private download URL with a custom context
//
// For more details, see GetFile documentation.
func (api *Client) GetFileContext(ctx context.Context, downloadURL string, writer io.Writer) error {
return downloadFile(ctx, api.httpclient, api.token, downloadURL, writer, api)
}
// GetFiles retrieves all files according to the parameters given
func (api *Client) GetFiles(params GetFilesParameters) ([]File, *Paging, error) {
return api.GetFilesContext(context.Background(), params)
}
// GetFilesContext retrieves all files according to the parameters given with a custom context
func (api *Client) GetFilesContext(ctx context.Context, params GetFilesParameters) ([]File, *Paging, error) {
values := url.Values{
"token": {api.token},
}
if params.User != DEFAULT_FILES_USER {
values.Add("user", params.User)
}
if params.Channel != DEFAULT_FILES_CHANNEL {
values.Add("channel", params.Channel)
}
if params.TimestampFrom != DEFAULT_FILES_TS_FROM {
values.Add("ts_from", strconv.FormatInt(int64(params.TimestampFrom), 10))
}
if params.TimestampTo != DEFAULT_FILES_TS_TO {
values.Add("ts_to", strconv.FormatInt(int64(params.TimestampTo), 10))
}
if params.Types != DEFAULT_FILES_TYPES {
values.Add("types", params.Types)
}
if params.Count != DEFAULT_FILES_COUNT {
values.Add("count", strconv.Itoa(params.Count))
}
if params.Page != DEFAULT_FILES_PAGE {
values.Add("page", strconv.Itoa(params.Page))
}
if params.ShowHidden != DEFAULT_FILES_SHOW_HIDDEN {
values.Add("show_files_hidden_by_limit", strconv.FormatBool(params.ShowHidden))
}
response, err := api.fileRequest(ctx, "files.list", values)
if err != nil {
return nil, nil, err
}
return response.Files, &response.Paging, nil
}
// ListFiles retrieves all files according to the parameters given. Uses cursor based pagination.
func (api *Client) ListFiles(params ListFilesParameters) ([]File, *ListFilesParameters, error) {
return api.ListFilesContext(context.Background(), params)
}
// ListFilesContext retrieves all files according to the parameters given with a custom context.
//
// For more details, see ListFiles documentation.
func (api *Client) ListFilesContext(ctx context.Context, params ListFilesParameters) ([]File, *ListFilesParameters, error) {
values := url.Values{
"token": {api.token},
}
if params.User != DEFAULT_FILES_USER {
values.Add("user", params.User)
}
if params.Channel != DEFAULT_FILES_CHANNEL {
values.Add("channel", params.Channel)
}
if params.Limit != DEFAULT_FILES_COUNT {
values.Add("limit", strconv.Itoa(params.Limit))
}
if params.Cursor != "" {
values.Add("cursor", params.Cursor)
}
response, err := api.fileRequest(ctx, "files.list", values)
if err != nil {
return nil, nil, err
}
params.Cursor = response.Metadata.Cursor
return response.Files, ¶ms, nil
}
// UploadFile uploads a file
func (api *Client) UploadFile(params FileUploadParameters) (file *File, err error) {
return api.UploadFileContext(context.Background(), params)
}
// UploadFileContext uploads a file and setting a custom context
func (api *Client) UploadFileContext(ctx context.Context, params FileUploadParameters) (file *File, err error) {
// Test if user token is valid. This helps because client.Do doesn't like this for some reason. XXX: More
// investigation needed, but for now this will do.
_, err = api.AuthTestContext(ctx)
if err != nil {
return nil, err
}
response := &fileResponseFull{}
values := url.Values{}
if params.Filetype != "" {
values.Add("filetype", params.Filetype)
}
if params.Filename != "" {
values.Add("filename", params.Filename)
}
if params.Title != "" {
values.Add("title", params.Title)
}
if params.InitialComment != "" {
values.Add("initial_comment", params.InitialComment)
}
if params.ThreadTimestamp != "" {
values.Add("thread_ts", params.ThreadTimestamp)
}
if len(params.Channels) != 0 {
values.Add("channels", strings.Join(params.Channels, ","))
}
if params.Content != "" {
values.Add("content", params.Content)
values.Add("token", api.token)
err = api.postMethod(ctx, "files.upload", values, response)
} else if params.File != "" {
err = postLocalWithMultipartResponse(ctx, api.httpclient, api.endpoint+"files.upload", params.File, "file", api.token, values, response, api)
} else if params.Reader != nil {
if params.Filename == "" {
return nil, fmt.Errorf("files.upload: FileUploadParameters.Filename is mandatory when using FileUploadParameters.Reader")
}
err = postWithMultipartResponse(ctx, api.httpclient, api.endpoint+"files.upload", params.Filename, "file", api.token, values, params.Reader, response, api)
}
if err != nil {
return nil, err
}
return &response.File, response.Err()
}
// DeleteFileComment deletes a file's comment
func (api *Client) DeleteFileComment(commentID, fileID string) error {
return api.DeleteFileCommentContext(context.Background(), fileID, commentID)
}
// DeleteFileCommentContext deletes a file's comment with a custom context
func (api *Client) DeleteFileCommentContext(ctx context.Context, fileID, commentID string) (err error) {
if fileID == "" || commentID == "" {
return ErrParametersMissing
}
values := url.Values{
"token": {api.token},
"file": {fileID},
"id": {commentID},
}
_, err = api.fileRequest(ctx, "files.comments.delete", values)
return err
}
// DeleteFile deletes a file
func (api *Client) DeleteFile(fileID string) error {
return api.DeleteFileContext(context.Background(), fileID)
}
// DeleteFileContext deletes a file with a custom context
func (api *Client) DeleteFileContext(ctx context.Context, fileID string) (err error) {
values := url.Values{
"token": {api.token},
"file": {fileID},
}
_, err = api.fileRequest(ctx, "files.delete", values)
return err
}
// RevokeFilePublicURL disables public/external sharing for a file
func (api *Client) RevokeFilePublicURL(fileID string) (*File, error) {
return api.RevokeFilePublicURLContext(context.Background(), fileID)
}
// RevokeFilePublicURLContext disables public/external sharing for a file with a custom context
func (api *Client) RevokeFilePublicURLContext(ctx context.Context, fileID string) (*File, error) {
values := url.Values{
"token": {api.token},
"file": {fileID},
}
response, err := api.fileRequest(ctx, "files.revokePublicURL", values)
if err != nil {
return nil, err
}
return &response.File, nil
}
// ShareFilePublicURL enabled public/external sharing for a file
func (api *Client) ShareFilePublicURL(fileID string) (*File, []Comment, *Paging, error) {
return api.ShareFilePublicURLContext(context.Background(), fileID)
}
// ShareFilePublicURLContext enabled public/external sharing for a file with a custom context
func (api *Client) ShareFilePublicURLContext(ctx context.Context, fileID string) (*File, []Comment, *Paging, error) {
values := url.Values{
"token": {api.token},
"file": {fileID},
}
response, err := api.fileRequest(ctx, "files.sharedPublicURL", values)
if err != nil {
return nil, nil, nil, err
}
return &response.File, response.Comments, &response.Paging, nil
}
// getUploadURLExternal gets a URL and fileID from slack which can later be used to upload a file
func (api *Client) getUploadURLExternal(ctx context.Context, params getUploadURLExternalParameters) (*getUploadURLExternalResponse, error) {
values := url.Values{
"token": {api.token},
"filename": {params.fileName},
"length": {strconv.Itoa(params.fileSize)},
}
if params.altText != "" {
values.Add("initial_comment", params.altText)
}
if params.snippetText != "" {
values.Add("thread_ts", params.snippetText)
}
response := &getUploadURLExternalResponse{}
err := api.postMethod(ctx, "files.getUploadURLExternal", values, response)
if err != nil {
return nil, err
}
return response, response.Err()
}
// uploadToURL uploads the file to the provided URL using post method
func (api *Client) uploadToURL(ctx context.Context, params uploadToURLParameters) (err error) {
values := url.Values{}
if params.Content != "" {
values.Add("content", params.Content)
values.Add("token", api.token)
err = postForm(ctx, api.httpclient, params.UploadURL, values, nil, api)
} else if params.File != "" {
err = postLocalWithMultipartResponse(ctx, api.httpclient, params.UploadURL, params.File, "file", api.token, values, nil, api)
} else if params.Reader != nil {
err = postWithMultipartResponse(ctx, api.httpclient, params.UploadURL, params.Filename, "file", api.token, values, params.Reader, nil, api)
}
return err
}
// completeUploadExternal once files are uploaded, this completes the upload and shares it to the specified channel
func (api *Client) completeUploadExternal(ctx context.Context, fileID string, params completeUploadExternalParameters) (file *completeUploadExternalResponse, err error) {
request := []FileSummary{{ID: fileID, Title: params.title}}
requestBytes, err := json.Marshal(request)
if err != nil {
return nil, err
}
values := url.Values{
"token": {api.token},
"files": {string(requestBytes)},
"channel_id": {params.channel},
}
if params.initialComment != "" {
values.Add("initial_comment", params.initialComment)
}
if params.threadTimestamp != "" {
values.Add("thread_ts", params.threadTimestamp)
}
response := &completeUploadExternalResponse{}
err = api.postMethod(ctx, "files.completeUploadExternal", values, response)
if err != nil {
return nil, err
}
if response.Err() != nil {
return nil, response.Err()
}
return response, nil
}
// UploadFileV2 uploads file to a given slack channel using 3 steps -
// 1. Get an upload URL using files.getUploadURLExternal API
// 2. Send the file as a post to the URL provided by slack
// 3. Complete the upload and share it to the specified channel using files.completeUploadExternal
func (api *Client) UploadFileV2(params UploadFileV2Parameters) (*FileSummary, error) {
return api.UploadFileV2Context(context.Background(), params)
}
// UploadFileV2 uploads file to a given slack channel using 3 steps with a custom context -
// 1. Get an upload URL using files.getUploadURLExternal API
// 2. Send the file as a post to the URL provided by slack
// 3. Complete the upload and share it to the specified channel using files.completeUploadExternal
func (api *Client) UploadFileV2Context(ctx context.Context, params UploadFileV2Parameters) (file *FileSummary, err error) {
if params.Filename == "" {
return nil, fmt.Errorf("file.upload.v2: filename cannot be empty")
}
if params.FileSize == 0 {
return nil, fmt.Errorf("file.upload.v2: file size cannot be 0")
}
if params.Channel == "" {
return nil, fmt.Errorf("file.upload.v2: channel cannot be empty")
}
u, err := api.getUploadURLExternal(ctx, getUploadURLExternalParameters{
altText: params.AltTxt,
fileName: params.Filename,
fileSize: params.FileSize,
snippetText: params.SnippetText,
})
if err != nil {
return nil, err
}
err = api.uploadToURL(ctx, uploadToURLParameters{
UploadURL: u.UploadURL,
Reader: params.Reader,
File: params.File,
Content: params.Content,
Filename: params.Filename,
})
if err != nil {
return nil, err
}
c, err := api.completeUploadExternal(ctx, u.FileID, completeUploadExternalParameters{
title: params.Title,
channel: params.Channel,
initialComment: params.InitialComment,
threadTimestamp: params.ThreadTimestamp,
})
if err != nil {
return nil, err
}
if len(c.Files) != 1 {
return nil, fmt.Errorf("file.upload.v2: something went wrong; received %d files instead of 1", len(c.Files))
}
return &c.Files[0], nil
}
|