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| Original file line number | Diff line number | Diff line change |
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@@ -2,6 +2,7 @@ boo | |
| /completions/ | ||
| dist/ | ||
| *.dll | ||
| .DS_Store | ||
| **/*.env | ||
| *.exe | ||
| *.exe~ | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,224 @@ | ||
| package cmd | ||
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| import ( | ||
| "bytes" | ||
| "encoding/json" | ||
| "fmt" | ||
| "io" | ||
| "log/slog" | ||
| "net/http" | ||
| "os" | ||
| "strings" | ||
| "time" | ||
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| "github.com/spf13/cobra" | ||
| "github.com/spf13/viper" | ||
| ) | ||
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| var ( | ||
| slack_channel string | ||
| slack_bot_token string | ||
| ) | ||
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| var slackCmd = &cobra.Command{ | ||
| Use: "slack", | ||
| Short: "Post to a Slack channel", | ||
| Long: `Post on a Slack channel. Note: \n * You need to set the SLACK_BOT_TOKEN in the environment`, | ||
| Args: cobra.ExactArgs(1), | ||
| RunE: slackPost, | ||
| } | ||
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| func InitSlack() { | ||
| rootCmd.AddCommand(slackCmd) | ||
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| slackCmd.Flags().StringVar(&slack_channel, "channel", "", "Slack Channel ID") | ||
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| addImageFlag(slackCmd) | ||
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| viper.BindEnv("SLACK_BOT_TOKEN") | ||
| } | ||
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| type slackSectionText struct { | ||
| Type string `json:"type"` | ||
| Text string `json:"text"` | ||
| } | ||
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| type slackSectionBlock struct { | ||
| Type string `json:"type"` | ||
| Text slackSectionText `json:"text"` | ||
| } | ||
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| type slackSlackFile struct { | ||
| Id string `json:"id"` | ||
| } | ||
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| type slackImageBlock struct { | ||
| Type string `json:"type"` | ||
| Image slackSlackFile `json:"slack_file"` | ||
| AltText string `json:"alt_text"` | ||
| } | ||
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| type slackPostMessage struct { | ||
| Channel string `json:"channel"` | ||
| Text string `json:"text,omitempty"` | ||
| Blocks []interface{} `json:"blocks"` | ||
| } | ||
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| func slackPost(cmd *cobra.Command, args []string) error { | ||
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| slack_bot_token = viper.GetString("slack_bot_token") | ||
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| hasImage, err := checkImage() | ||
| if err != nil { | ||
| return err | ||
| } | ||
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| body, bodyErr := getInput(args[0]) | ||
| if bodyErr != nil { | ||
| return bodyErr | ||
| } | ||
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| blocks := make([]interface{}, 0) | ||
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| sectionBlock := slackSectionBlock{ | ||
| Type: "section", | ||
| Text: slackSectionText{ | ||
| Type: "mrkdwn", | ||
| Text: body, | ||
| }, | ||
| } | ||
| blocks = append(blocks, sectionBlock) | ||
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| if hasImage { | ||
| photoId, photoErr := slackUploadImage() | ||
| if photoErr != nil { | ||
| return photoErr | ||
| } | ||
| blocks = append(blocks, slackImageBlock{ | ||
| Type: "image", | ||
| Image: slackSlackFile{ | ||
| Id: photoId, | ||
| }, | ||
| AltText: "Image", | ||
| }) | ||
| } | ||
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| message := slackPostMessage{ | ||
| Channel: slack_channel, | ||
| Text: fmt.Sprintf("Plain text: %s", body), | ||
| Blocks: blocks, | ||
| } | ||
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| bytesBody, jsonErr := json.Marshal(message) | ||
| if jsonErr != nil { | ||
| return jsonErr | ||
| } | ||
| slog.Info("Slack body", "body", string(bytesBody)) | ||
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| bodyReader := bytes.NewReader(bytesBody) | ||
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| req, reqErr := http.NewRequest(http.MethodPost, "https://slack.com/api/chat.postMessage", bodyReader) | ||
| if reqErr != nil { | ||
| return reqErr | ||
| } | ||
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| req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", slack_bot_token)) | ||
| req.Header.Set("Content-Type", "application/json; charset=UTF-8") | ||
| req.Header.Set("User-Agent", UserAgent) | ||
| client := http.Client{ | ||
| Timeout: 30 * time.Second, | ||
| } | ||
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| res, resErr := client.Do(req) | ||
| if resErr != nil { | ||
| return resErr | ||
| } | ||
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| resBody, readErr := io.ReadAll(res.Body) | ||
| if readErr != nil { | ||
| return readErr | ||
| } | ||
| slog.Info("Slack response", "status", res.Status, "body", resBody) | ||
| return nil | ||
| } | ||
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| type slackGetUploadURLExternal struct { | ||
| Ok bool `json:"ok"` | ||
| UploadURL string `json:"upload_url"` | ||
| FileId string `json:"file_id"` | ||
| } | ||
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| func slackUploadImage() (string, error) { | ||
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| imageStat, statErr := os.Stat(imageFile) | ||
| if statErr != nil { | ||
| return "", statErr | ||
| } | ||
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| requestURL := fmt.Sprintf("https://slack.com/api/files.getUploadURLExternal?filename=%s&length=%d", imageFile, imageStat.Size()) | ||
| urlReq, urlReqErr := http.NewRequest("GET", requestURL, nil) | ||
| if urlReqErr != nil { | ||
| return "", urlReqErr | ||
| } | ||
| urlReq.Header.Set("Authorization", fmt.Sprintf("Bearer %s", slack_bot_token)) | ||
| urlReq.Header.Set("User-Agent", UserAgent) | ||
| client := http.Client{ | ||
| Timeout: 30 * time.Second, | ||
| } | ||
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| urlResp, urlRespErr := client.Do(urlReq) | ||
| if urlRespErr != nil { | ||
| return "", urlRespErr | ||
| } | ||
| var uploadURL = slackGetUploadURLExternal{} | ||
| uploadURLBody, uploadURLErr := io.ReadAll(urlResp.Body) | ||
| if uploadURLErr != nil { | ||
| return "", uploadURLErr | ||
| } | ||
| jsonErr := json.Unmarshal(uploadURLBody, &uploadURL) | ||
| if jsonErr != nil { | ||
| return "", jsonErr | ||
| } | ||
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| if !uploadURL.Ok { | ||
| return "", fmt.Errorf("failed to get upload URL: %s", uploadURLBody) | ||
| } | ||
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| f, _ := os.Open(imageFile) | ||
| defer f.Close() | ||
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| // post the image to the upload URL | ||
| postReq, postReqErr := http.NewRequest("POST", uploadURL.UploadURL, f) | ||
| if postReqErr != nil { | ||
| return "", postReqErr | ||
| } | ||
| postReq.Header.Set("Content-Type", "image/jpeg") | ||
| postReq.Header.Set("Authorization", fmt.Sprintf("Bearer %s", slack_bot_token)) | ||
| postReq.Header.Set("User-Agent", UserAgent) | ||
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| _, postErr := client.Do(postReq) | ||
| if postErr != nil { | ||
| return "", postErr | ||
| } | ||
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| // complete the upload | ||
| completeBody := fmt.Sprintf("{\"files\": [{\"id\":\"%s\"}]}", uploadURL.FileId) | ||
| completeReq, completeReqErr := http.NewRequest("POST", "https://slack.com/api/files.completeUploadExternal", strings.NewReader(completeBody)) | ||
| if completeReqErr != nil { | ||
| return "", completeReqErr | ||
| } | ||
| completeReq.Header.Set("Content-Type", "application/json; charset=UTF-8") | ||
| completeReq.Header.Set("Authorization", fmt.Sprintf("Bearer %s", slack_bot_token)) | ||
| completeReq.Header.Set("User-Agent", UserAgent) | ||
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| _, completeRespErr := client.Do(completeReq) | ||
| if completeRespErr != nil { | ||
| return "", completeRespErr | ||
| } | ||
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| //discovered after much pain: sleep for 1 second | ||
| time.Sleep(5 * time.Second) | ||
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| slog.Info("Uploaded image", "file_id", uploadURL.FileId) | ||
| return uploadURL.FileId, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
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@@ -76,6 +76,7 @@ func main() { | |
| cmd.InitEmail() | ||
| cmd.InitFacebook() | ||
| cmd.InitMastodon() | ||
| cmd.InitSlack() | ||
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| cmd.Execute() | ||
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