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// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package mailservice
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
"os"
"strings"
"time"
)
const (
INBUCKET_API = "/api/v1/mailbox/"
)
// OutputJSONHeader holds the received Header to test sending emails (inbucket)
type JSONMessageHeaderInbucket []struct {
Mailbox string
ID string `json:"Id"`
From, Subject, Date string
To []string
Size int
}
// OutputJSONMessage holds the received Message fto test sending emails (inbucket)
type JSONMessageInbucket struct {
Mailbox string
ID string `json:"Id"`
From, Subject, Date string
Size int
Header map[string][]string
Body struct {
Text string
HTML string `json:"Html"`
}
Attachments []struct {
Filename string
ContentType string `json:"content-type"`
DownloadLink string `json:"download-link"`
Bytes []byte `json:"-"`
}
}
func ParseEmail(email string) string {
pos := strings.Index(email, "@")
parsedEmail := email[0:pos]
return parsedEmail
}
func GetMailBox(email string) (results JSONMessageHeaderInbucket, err error) {
parsedEmail := ParseEmail(email)
url := fmt.Sprintf("%s%s%s", getInbucketHost(), INBUCKET_API, parsedEmail)
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return nil, err
}
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.Body == nil {
return nil, fmt.Errorf("No Mailbox")
}
var record JSONMessageHeaderInbucket
err = json.NewDecoder(resp.Body).Decode(&record)
switch {
case err == io.EOF:
return nil, fmt.Errorf("Error: %s", err)
case err != nil:
return nil, fmt.Errorf("Error: %s", err)
}
if len(record) == 0 {
return nil, fmt.Errorf("No mailbox")
}
return record, nil
}
func GetMessageFromMailbox(email, id string) (results JSONMessageInbucket, err error) {
parsedEmail := ParseEmail(email)
var record JSONMessageInbucket
url := fmt.Sprintf("%s%s%s/%s", getInbucketHost(), INBUCKET_API, parsedEmail, id)
emailResponse, err := get(url)
if err != nil {
return record, err
}
defer emailResponse.Body.Close()
err = json.NewDecoder(emailResponse.Body).Decode(&record)
// download attachments
if record.Attachments != nil && len(record.Attachments) > 0 {
for i := range record.Attachments {
if bytes, err := downloadAttachment(record.Attachments[i].DownloadLink); err != nil {
return record, err
} else {
record.Attachments[i].Bytes = make([]byte, len(bytes))
copy(record.Attachments[i].Bytes, bytes)
}
}
}
return record, err
}
func downloadAttachment(url string) ([]byte, error) {
attachmentResponse, err := get(url)
if err != nil {
return nil, err
}
defer attachmentResponse.Body.Close()
buf := new(bytes.Buffer)
io.Copy(buf, attachmentResponse.Body)
return buf.Bytes(), nil
}
func get(url string) (*http.Response, error) {
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return nil, err
}
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
return nil, err
}
return resp, nil
}
func DeleteMailBox(email string) (err error) {
parsedEmail := ParseEmail(email)
url := fmt.Sprintf("%s%s%s", getInbucketHost(), INBUCKET_API, parsedEmail)
req, err := http.NewRequest("DELETE", url, nil)
if err != nil {
return err
}
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
return nil
}
func RetryInbucket(attempts int, callback func() error) (err error) {
for i := 0; ; i++ {
err = callback()
if err == nil {
return nil
}
if i >= (attempts - 1) {
break
}
time.Sleep(5 * time.Second)
fmt.Println("retrying...")
}
return fmt.Errorf("After %d attempts, last error: %s", attempts, err)
}
func getInbucketHost() (host string) {
inbucket_host := os.Getenv("CI_HOST")
if inbucket_host == "" {
inbucket_host = "dockerhost"
}
inbucket_port := os.Getenv("CI_INBUCKET_PORT")
if inbucket_port == "" {
inbucket_port = "9000"
}
return fmt.Sprintf("http://%s:%s", inbucket_host, inbucket_port)
}
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