1package main
2
3import (
4 "bytes"
5 "encoding/base64"
6 "fmt"
7 "log"
8 "os"
9 "path/filepath"
10 "regexp"
11 "strings"
12 "time"
13
14 "github.com/andrinoff/email-cli/config"
15 "github.com/andrinoff/email-cli/fetcher"
16 "github.com/andrinoff/email-cli/sender"
17 "github.com/andrinoff/email-cli/tui"
18 tea "github.com/charmbracelet/bubbletea"
19 "github.com/google/uuid"
20 "github.com/yuin/goldmark"
21 "github.com/yuin/goldmark/renderer/html"
22)
23
24const (
25 initialEmailLimit = 20
26 paginationLimit = 20
27)
28
29type mainModel struct {
30 current tea.Model
31 previousModel tea.Model
32 cachedComposer *tui.Composer // To cache a discarded draft
33 config *config.Config
34 emails []fetcher.Email
35 inbox *tui.Inbox
36 width int
37 height int
38 err error
39}
40
41func newInitialModel(cfg *config.Config) *mainModel {
42 // Determine if there is a cached composer to pass to the initial choice view
43 hasCache := false
44 initialModel := &mainModel{}
45 if cfg == nil {
46 initialModel.current = tui.NewLogin()
47 } else {
48 initialModel.current = tui.NewChoice(hasCache)
49 initialModel.config = cfg
50 }
51 return initialModel
52}
53
54func (m *mainModel) Init() tea.Cmd {
55 return m.current.Init()
56}
57
58func (m *mainModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
59 var cmd tea.Cmd
60 var cmds []tea.Cmd
61
62 m.current, cmd = m.current.Update(msg)
63 cmds = append(cmds, cmd)
64
65 switch msg := msg.(type) {
66 case tea.WindowSizeMsg:
67 m.width = msg.Width
68 m.height = msg.Height
69 return m, nil
70
71 case tea.KeyMsg:
72 if msg.String() == "ctrl+c" {
73 return m, tea.Quit
74 }
75 if msg.String() == "esc" {
76 switch m.current.(type) {
77 case *tui.FilePicker:
78 return m, func() tea.Msg { return tui.CancelFilePickerMsg{} }
79 case *tui.Inbox, *tui.Login:
80 m.current = tui.NewChoice(m.cachedComposer != nil)
81 return m, m.current.Init()
82 }
83 }
84
85 case tui.BackToInboxMsg:
86 if m.inbox != nil {
87 m.current = m.inbox
88 } else {
89 m.current = tui.NewChoice(m.cachedComposer != nil)
90 }
91 return m, nil
92
93 case tui.DiscardDraftMsg:
94 m.cachedComposer = msg.ComposerState
95 m.current = tui.NewChoice(true) // Now there is a cached draft
96 return m, m.current.Init()
97
98 case tui.RestoreDraftMsg:
99 if m.cachedComposer != nil {
100 m.current = m.cachedComposer
101 m.cachedComposer.ResetConfirmation()
102 m.cachedComposer = nil // Clear cache after restoring
103 return m, m.current.Init()
104 }
105
106 case tui.Credentials:
107 cfg := &config.Config{
108 ServiceProvider: msg.Provider,
109 Name: msg.Name,
110 Email: msg.Email,
111 Password: msg.Password,
112 }
113 if err := config.SaveConfig(cfg); err != nil {
114 log.Printf("could not save config: %v", err)
115 return m, tea.Quit
116 }
117 m.config = cfg
118 m.current = tui.NewChoice(m.cachedComposer != nil)
119 return m, m.current.Init()
120
121 case tui.GoToInboxMsg:
122 m.current = tui.NewStatus("Fetching emails...")
123 return m, tea.Batch(m.current.Init(), fetchEmails(m.config, initialEmailLimit, 0))
124
125 case tui.EmailsFetchedMsg:
126 m.emails = msg.Emails
127 m.inbox = tui.NewInbox(m.emails)
128 m.current = m.inbox
129 m.current, _ = m.current.Update(tea.WindowSizeMsg{Width: m.width, Height: m.height})
130 return m, m.current.Init()
131
132 case tui.FetchMoreEmailsMsg:
133 return m, tea.Batch(
134 func() tea.Msg { return tui.FetchingMoreEmailsMsg{} },
135 fetchEmails(m.config, paginationLimit, msg.Offset),
136 )
137
138 case tui.EmailsAppendedMsg:
139 m.emails = append(m.emails, msg.Emails...)
140 return m, nil
141
142 case tui.GoToSendMsg:
143 // When composing a new email, we discard any previously cached draft.
144 m.cachedComposer = nil
145 m.current = tui.NewComposer(m.config.Email, msg.To, msg.Subject, msg.Body)
146 m.current, _ = m.current.Update(tea.WindowSizeMsg{Width: m.width, Height: m.height})
147 return m, m.current.Init()
148
149 case tui.GoToSettingsMsg:
150 m.current = tui.NewLogin()
151 m.current, _ = m.current.Update(tea.WindowSizeMsg{Width: m.width, Height: m.height})
152 return m, m.current.Init()
153
154 case tui.ViewEmailMsg:
155 emailView := tui.NewEmailView(m.emails[msg.Index], m.width, m.height)
156 m.current = emailView
157 return m, m.current.Init()
158
159 case tui.ReplyToEmailMsg:
160 to := msg.Email.From
161 subject := "Re: " + msg.Email.Subject
162 body := fmt.Sprintf("\n\nOn %s, %s wrote:\n> %s", msg.Email.Date.Format("Jan 2, 2006 at 3:04 PM"), msg.Email.From, strings.ReplaceAll(msg.Email.Body, "\n", "\n> "))
163 m.current = tui.NewComposer(m.config.Email, to, subject, body)
164 m.current, _ = m.current.Update(tea.WindowSizeMsg{Width: m.width, Height: m.height})
165 return m, m.current.Init()
166
167 case tui.GoToFilePickerMsg:
168 m.previousModel = m.current
169 wd, _ := os.Getwd()
170 m.current = tui.NewFilePicker(wd)
171 m.current, _ = m.current.Update(tea.WindowSizeMsg{Width: m.width, Height: m.height})
172 return m, m.current.Init()
173
174 case tui.FileSelectedMsg, tui.CancelFilePickerMsg:
175 if m.previousModel != nil {
176 m.current = m.previousModel
177 m.previousModel = nil
178 }
179 return m, nil
180
181 case tui.SendEmailMsg:
182 m.cachedComposer = nil // Clear cache on successful send
183 m.current = tui.NewStatus("Sending email...")
184 return m, tea.Batch(m.current.Init(), sendEmail(m.config, msg))
185
186 case tui.EmailResultMsg:
187 m.current = tui.NewChoice(m.cachedComposer != nil)
188 return m, m.current.Init()
189
190 case tui.DeleteEmailMsg:
191 m.previousModel = m.current
192 m.current = tui.NewStatus("Deleting email...")
193 return m, tea.Batch(m.current.Init(), deleteEmailCmd(m.config, msg.UID))
194
195 case tui.ArchiveEmailMsg:
196 m.previousModel = m.current
197 m.current = tui.NewStatus("Archiving email...")
198 return m, tea.Batch(m.current.Init(), archiveEmailCmd(m.config, msg.UID))
199
200 case tui.EmailActionDoneMsg:
201 if msg.Err != nil {
202 log.Printf("Action failed: %v", msg.Err)
203 m.current = m.inbox
204 return m, nil
205 }
206 var updatedEmails []fetcher.Email
207 for _, email := range m.emails {
208 if email.UID != msg.UID {
209 updatedEmails = append(updatedEmails, email)
210 }
211 }
212 m.emails = updatedEmails
213 m.inbox = tui.NewInbox(m.emails)
214 m.current = m.inbox
215 m.current, _ = m.current.Update(tea.WindowSizeMsg{Width: m.width, Height: m.height})
216 return m, m.current.Init()
217
218 case tui.DownloadAttachmentMsg:
219 m.previousModel = m.current
220 m.current = tui.NewStatus(fmt.Sprintf("Downloading %s...", msg.Filename))
221 return m, tea.Batch(m.current.Init(), downloadAttachmentCmd(msg))
222
223 case tui.AttachmentDownloadedMsg:
224 var statusMsg string
225 if msg.Err != nil {
226 statusMsg = fmt.Sprintf("Error downloading: %v", msg.Err)
227 } else {
228 statusMsg = fmt.Sprintf("Saved to %s", msg.Path)
229 }
230 m.current = tui.NewStatus(statusMsg)
231 return m, tea.Tick(2*time.Second, func(t time.Time) tea.Msg {
232 return tui.RestoreViewMsg{}
233 })
234
235 case tui.RestoreViewMsg:
236 if m.previousModel != nil {
237 m.current = m.previousModel
238 m.previousModel = nil
239 }
240 return m, nil
241 }
242
243 return m, tea.Batch(cmds...)
244}
245
246func (m *mainModel) View() string {
247 return m.current.View()
248}
249
250func markdownToHTML(md []byte) []byte {
251 var buf bytes.Buffer
252 p := goldmark.New(goldmark.WithRendererOptions(html.WithUnsafe()))
253 if err := p.Convert(md, &buf); err != nil {
254 return md
255 }
256 return buf.Bytes()
257}
258
259func sendEmail(cfg *config.Config, msg tui.SendEmailMsg) tea.Cmd {
260 return func() tea.Msg {
261 recipients := []string{msg.To}
262 body := msg.Body
263 images := make(map[string][]byte)
264 attachments := make(map[string][]byte)
265
266 re := regexp.MustCompile(`!\[.*?\]\((.*?)\)`)
267 matches := re.FindAllStringSubmatch(body, -1)
268
269 for _, match := range matches {
270 imgPath := match[1]
271 imgData, err := os.ReadFile(imgPath)
272 if err != nil {
273 log.Printf("Could not read image file %s: %v", imgPath, err)
274 continue
275 }
276 cid := fmt.Sprintf("%s%s@%s", uuid.NewString(), filepath.Ext(imgPath), "email-cli")
277 images[cid] = []byte(base64.StdEncoding.EncodeToString(imgData))
278 body = strings.Replace(body, imgPath, "cid:"+cid, 1)
279 }
280
281 htmlBody := markdownToHTML([]byte(body))
282
283 if msg.AttachmentPath != "" {
284 fileData, err := os.ReadFile(msg.AttachmentPath)
285 if err != nil {
286 log.Printf("Could not read attachment file %s: %v", msg.AttachmentPath, err)
287 } else {
288 _, filename := filepath.Split(msg.AttachmentPath)
289 attachments[filename] = fileData
290 }
291 }
292
293 err := sender.SendEmail(cfg, recipients, msg.Subject, msg.Body, string(htmlBody), images, attachments, msg.InReplyTo, msg.References)
294 if err != nil {
295 log.Printf("Failed to send email: %v", err)
296 return tui.EmailResultMsg{Err: err}
297 }
298 return tui.EmailResultMsg{}
299 }
300}
301
302func fetchEmails(cfg *config.Config, limit, offset uint32) tea.Cmd {
303 return func() tea.Msg {
304 emails, err := fetcher.FetchEmails(cfg, limit, offset)
305 if err != nil {
306 return tui.FetchErr(err)
307 }
308 if offset == 0 {
309 return tui.EmailsFetchedMsg{Emails: emails}
310 }
311 return tui.EmailsAppendedMsg{Emails: emails}
312 }
313}
314
315func deleteEmailCmd(cfg *config.Config, uid uint32) tea.Cmd {
316 return func() tea.Msg {
317 err := fetcher.DeleteEmail(cfg, uid)
318 return tui.EmailActionDoneMsg{UID: uid, Err: err}
319 }
320}
321
322func archiveEmailCmd(cfg *config.Config, uid uint32) tea.Cmd {
323 return func() tea.Msg {
324 err := fetcher.ArchiveEmail(cfg, uid)
325 return tui.EmailActionDoneMsg{UID: uid, Err: err}
326 }
327}
328
329func downloadAttachmentCmd(msg tui.DownloadAttachmentMsg) tea.Cmd {
330 return func() tea.Msg {
331 homeDir, err := os.UserHomeDir()
332 if err != nil {
333 return tui.AttachmentDownloadedMsg{Err: err}
334 }
335 downloadsPath := filepath.Join(homeDir, "Downloads")
336 if _, err := os.Stat(downloadsPath); os.IsNotExist(err) {
337 if mkErr := os.MkdirAll(downloadsPath, 0755); mkErr != nil {
338 return tui.AttachmentDownloadedMsg{Err: mkErr}
339 }
340 }
341 filePath := filepath.Join(downloadsPath, msg.Filename)
342 err = os.WriteFile(filePath, msg.Data, 0644)
343 return tui.AttachmentDownloadedMsg{Path: filePath, Err: err}
344 }
345}
346
347func main() {
348 cfg, err := config.LoadConfig()
349 var initialModel *mainModel
350 if err != nil {
351 initialModel = newInitialModel(nil)
352 } else {
353 initialModel = newInitialModel(cfg)
354 }
355
356 p := tea.NewProgram(initialModel, tea.WithAltScreen())
357
358 if _, err := p.Run(); err != nil {
359 fmt.Printf("Alas, there's been an error: %v", err)
360 os.Exit(1)
361 }
362}