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cmd_list.go
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/
cmd_list.go
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package main
import (
"context"
"encoding/base64"
"fmt"
"os"
"sort"
"strings"
"sync"
"time"
"github.com/shu-go/gli"
"golang.org/x/xerrors"
gmail "google.golang.org/api/gmail/v1"
"google.golang.org/api/option"
)
type listCmd struct {
Format string `cli:"format,f" default:"{id} {subject} ({date})" help:"{id}, {subject}, {date}, {snippet}, {body}"`
Sort gli.StrList `cli:"sort" default:"-date,subject,id" help:"sort criteria that is a list of [id, subject, date, snippet] (- means descending order)"`
}
func (c listCmd) Run(g globalCmd, args []string) error {
config, err := getConfig(g.Credentials, g.ClientID, g.ClientSecret)
if err != nil {
return xerrors.Errorf("failed to get config: %v", err)
}
/*client*/
_, token, err := getClient(config, g.Token, g.AuthPort)
if err != nil {
return xerrors.Errorf("failed to connect services: %v", err)
}
ctx := context.Background()
gmailService, err := gmail.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
if err != nil {
return xerrors.Errorf("failed to instantiate a gmail service: %v", err)
}
q := strings.Join(args, " ")
// check for label Notes/pomera_sync
var pomeraSync *gmail.Label
{
labelsService := gmail.NewUsersLabelsService(gmailService)
resp, err := labelsService.List(g.UserID).Do()
if err != nil {
return err
}
for _, lbl := range resp.Labels {
if lbl.Name == g.Label {
pomeraSync = lbl
}
}
if pomeraSync == nil {
return fmt.Errorf("Label %q not found", g.Label)
}
}
list := make([]listItem, 0, 4)
// list messages
{
msgService := gmail.NewUsersMessagesService(gmailService)
resp, err := msgService.List(g.UserID).LabelIds(pomeraSync.Id).Q(q).Do()
if err != nil {
return err
}
wg := sync.WaitGroup{}
mut := sync.Mutex{}
for _, msg := range resp.Messages {
wg.Add(1)
go func(msg *gmail.Message) {
//m, err := msgService.Get(c.LoginID, msg.Id).Format("metadata").Do()
m, err := msgService.Get(g.UserID, msg.Id).Format("full").Do()
if err != nil {
fmt.Fprintf(os.Stderr, "ERROR: %v\n", err)
return
}
content := c.Format
content = strings.ReplaceAll(content, "{id}", m.Id)
if strings.Contains(c.Format, "{subject}") {
content = strings.ReplaceAll(content, "{subject}", getHeader(m.Payload.Headers, "Subject"))
}
if strings.Contains(c.Format, "{headers}") {
content = strings.ReplaceAll(content, "{headers}", fmt.Sprintf("%#v", m.Payload.Headers))
}
if strings.Contains(c.Format, "{date}") {
content = strings.ReplaceAll(content, "{date}", getHeader(m.Payload.Headers, "Date"))
}
if strings.Contains(c.Format, "{snippet}") {
content = strings.ReplaceAll(content, "{snippet}", m.Snippet)
}
if strings.Contains(c.Format, "{body}") {
decoded, err := base64.URLEncoding.DecodeString(m.Payload.Body.Data)
if err != nil {
fmt.Fprintf(os.Stderr, "ERROR: %v\n", err)
return
}
content = strings.ReplaceAll(content, "{body}", string(decoded))
}
dt, err := time.Parse(time.RFC822Z, getHeader(m.Payload.Headers, "Date"))
if err != nil {
dt = time.Now()
}
mut.Lock()
list = append(list, listItem{
Content: content,
ID: m.Id,
Subject: getHeader(m.Payload.Headers, "Subject"),
Date: dt,
Snippet: m.Snippet,
})
mut.Unlock()
wg.Done()
}(msg)
}
wg.Wait()
}
sortListItems(list, c.Sort)
for _, item := range list {
fmt.Println(item.Content)
}
return nil
}
// used to collect displaying items
// list, trash
type listItem struct {
Content string
ID, Subject, Snippet string
Date time.Time
}
func sortListItems(list []listItem, criteria []string) {
sort.Slice(list, func(i, j int) bool {
for _, c := range criteria {
switch strings.ToLower(c) {
case "id":
if list[i].ID < list[j].ID {
return true
} else if list[i].ID > list[j].ID {
return false
}
case "-id":
if list[j].ID < list[i].ID {
return true
} else if list[j].ID > list[i].ID {
return false
}
case "subject":
if list[i].Subject < list[j].Subject {
return true
} else if list[i].Subject > list[j].Subject {
return false
}
case "-subject":
if list[j].Subject < list[i].Subject {
return true
} else if list[j].Subject > list[i].Subject {
return false
}
case "date":
if list[i].Date.Before(list[j].Date) {
return true
} else if list[i].Date.After(list[j].Date) {
return false
}
case "-date":
if list[j].Date.Before(list[i].Date) {
return true
} else if list[j].Date.After(list[i].Date) {
return false
}
case "snippet":
if list[i].Snippet < list[j].Snippet {
return true
} else if list[i].Snippet > list[j].Snippet {
return false
}
case "-snippet":
if list[j].Snippet < list[i].Snippet {
return true
} else if list[j].Snippet > list[i].Snippet {
return false
}
//default:
//nop
}
}
return false
})
}