Ok pour la lecture des mails, reste à voir comment les servir via http

blogentry.go

@@ -0,0 +1,9 @@
+package main
+
+type BlogEntry struct {
+	Id     string
+	Title  string
+	Author string
+	HTML   string
+	Text   string
+}

cli.go

@@ -0,0 +1,49 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strings"
+)
+
+func prompt(question string, options []string, defaultAnswer string, currentValue string, permitEmpty bool) (string, error) {
+	r := bufio.NewReader(os.Stdin)
+	if len(currentValue) == 0 {
+		currentValue = "None"
+	}
+	if len(defaultAnswer) == 0 {
+		defaultAnswer = "None"
+	}
+	if options == nil {
+		fmt.Print("->", question, "( defaults to:", defaultAnswer, " current value:", currentValue, " )", ":")
+
+	} else {
+		fmt.Print("->", question, "( defaults to:", defaultAnswer, " current value:", currentValue, " )[ ", strings.Join(options, " | "), " ]", ":")
+	}
+	response, _ := r.ReadString('\n')
+	response = strings.Trim(response, "\n")
+	if len(response) == 0 && currentValue != "None" {
+		response = currentValue
+	}
+	if len(response) == 0 && defaultAnswer != "None" {
+		response = defaultAnswer
+	}
+	if options != nil {
+		validOption := false
+		for _, opt := range options {
+			if strings.EqualFold(response, opt) {
+				validOption = true
+				response = opt
+				break
+			}
+		}
+		if !validOption {
+			return response, fmt.Errorf("invalid option")
+		}
+	}
+	if !permitEmpty && len(response) == 0 {
+		return response, fmt.Errorf("empty response")
+	}
+	return response, nil
+}

configuration.go

@@ -2,17 +2,15 @@ package main
 
 type MailBoxConfiguration struct {
 	Server   string
-	Port     int
+	Port     string
 	User     string
 	Password string
 	SSL      string
+	InBox    string
 }
 type BlogConfiguration struct {
 	Title     string
-	MailBox string
+	ShortName string
+	MailBox   MailBoxConfiguration
 	WWWRoot   string
 }
-type Configuration struct {
-	MailBoxes map[string]MailBoxConfiguration
-	Blogs     map[string]BlogConfiguration
-}

imap_handler.go

@@ -6,6 +6,8 @@ import (
 	"io"
 	"log"
 	"mime"
+	"strconv"
+	"strings"
 
 	"github.com/emersion/go-imap/v2"
 	"github.com/emersion/go-imap/v2/imapclient"
@@ -15,12 +17,28 @@ import (
 
 type MailBox struct {
 	Server   string
+	Port     uint16
 	User     string
 	Password string
+	SSL      string
 	InBox    string
 	Client   *imapclient.Client
 }
 
+func (mb *MailBox) Configure(conf *MailBoxConfiguration) error {
+
+	mb.Server = conf.Server
+	port, err := strconv.ParseUint(conf.Port, 10, 16)
+	if err != nil {
+		return err
+	}
+	mb.Port = uint16(port)
+	mb.User = conf.User
+	mb.Password = conf.Password
+	mb.SSL = conf.SSL
+	mb.InBox = conf.InBox
+	return nil
+}
 func (mb *MailBox) ListMessages() (string, error) {
 	return "", nil
 }
@@ -30,9 +48,19 @@ func (mb *MailBox) Connect() error {
 		WordDecoder: &mime.WordDecoder{CharsetReader: charset.Reader},
 	}
 	var err error
-	mb.Client, err = imapclient.DialTLS(mb.Server, options)
+	imapServer := fmt.Sprintf("%s:%d", mb.Server, mb.Port)
+	switch mb.SSL {
+	case "SSL/TLS":
+		mb.Client, err = imapclient.DialTLS(imapServer, options)
+	case "StartTLS":
+		mb.Client, err = imapclient.DialStartTLS(imapServer, options)
+	case "NoTLS":
+		mb.Client, err = imapclient.DialInsecure(imapServer, options)
+	default:
+		return fmt.Errorf("bad tls configuration")
+	}
 	if err != nil {
-		log.Println("Error connnecting to", mb.Server, ":", err)
+		log.Println("Error connnecting to", imapServer, ":", err)
 		return err
 	}
 	log.Println("Connected")
@@ -41,21 +69,33 @@ func (mb *MailBox) Connect() error {
 		log.Fatal("failed to login:", err)
 	}
 	log.Println("Logged in")
-
+	return nil
+}
+func (mb *MailBox) ListFolders() ([]string, error) {
+	folders := make([]string, 0)
 	mailBoxes, err := mb.Client.List("", "%", nil).Collect()
 	if err != nil {
-		log.Fatal("Error listing mailboxes", err)
+		return nil, err
 	}
 	for _, mbox := range mailBoxes {
-		log.Println("mailbox:", mbox.Mailbox)
+		folders = append(folders, mbox.Mailbox)
 	}
+	return folders, nil
+}
+func (mb *MailBox) GetMessages() ([]BlogEntry, error) {
+
 	inbox, err := mb.Client.Select(mb.InBox, nil).Wait()
 	if err != nil {
 		log.Fatal("Error selecting mailbox:", mb.InBox, err)
 	}
 	log.Println("Inbox has", inbox.NumMessages, "messages")
 
-	for i := uint32(0); i <= inbox.NumMessages; i++ {
+	if inbox.NumMessages <= 0 {
+		return nil, fmt.Errorf("nomessages")
+	}
+	entries := make([]BlogEntry, 0)
+	for i := uint32(1); i <= inbox.NumMessages; i++ {
+		var entry BlogEntry
 		seqSet := imap.SeqSetNum(i)
 		bodySection := &imap.FetchItemBodySection{}
 		fetchOptions := &imap.FetchOptions{
@@ -66,44 +106,63 @@ func (mb *MailBox) Connect() error {
 		if err != nil {
 			log.Fatal("Error fetching mails:", err)
 		}
-		for _, msg := range messages {
-			log.Println("**************MESSAGE**************")
-			log.Println("From:", msg.Envelope.From)
-			log.Println("To:", msg.Envelope.To)
-			log.Println("Date:", msg.Envelope.Date)
-			log.Println("Subject:", msg.Envelope.Subject)
+		entry.Title = strings.Trim(messages[0].Envelope.Subject, "\t ")
+		if !strings.HasPrefix(strings.ToLower(entry.Title), "blog ") {
+			continue
+		}
 
-			section := msg.FindBodySection(bodySection)
+		entry.Id = messages[0].Envelope.MessageID
+		entry.Title = entry.Title[5:]
+		entry.Author = messages[0].Envelope.From[0].Name
+
+		section := messages[0].FindBodySection(bodySection)
 		ioReader := bytes.NewReader(section)
 		mailReader, err := mail.CreateReader(ioReader)
 		if err != nil {
-				log.Fatalf("failed to create mail reader: %v", err)
+			return nil, err
 		}
 		for {
 			part, err := mailReader.NextPart()
 			if err == io.EOF {
 				break
 			} else if err != nil {
-					log.Fatal("Error reading part", err)
+				return nil, err
 			}
-				log.Println("------------PART-----------")
-				fmt.Println("Content-Type:", part.Header.Get("Content-Type"))
-				fmt.Println("Content-Transfer-Encoding:", part.Header.Get("Content-Transfer-Encoding"))
-				fmt.Println("header:", part.Header)
-				switch header := part.Header.(type) {
+
+			switch part.Header.(type) {
 			case *mail.AttachmentHeader:
+				/*
 					filename, _ := header.Filename()
+
 					log.Println("------------FILE-----------")
 					log.Println("Attachment:", filename)
+				*/
 			case *mail.InlineHeader:
-					log.Println("------------INLINE-----------")
+
 				body, _ := io.ReadAll(part.Body)
-					log.Println(string(body))
+				contentTypeFull := strings.TrimPrefix(
+					strings.ToLower(part.Header.Get("Content-Type")), "content-type")
+				mediaType, _, err := mime.ParseMediaType(strings.TrimLeft(contentTypeFull, ": "))
+				if err != nil {
+					return nil, err
+				}
+				switch mediaType {
+				case "text/plain":
+					entry.Text = string(body)
+				case "text/html":
+					entry.HTML = string(body)
+				default:
+					log.Println("Content-Type:", part.Header.Get("Content-Type"))
+
+				}
+
+			default:
+				log.Printf("Unkown part type %+v", part)
 			}
 		}
+		entries = append(entries, entry)
 	}
-	}
-	return nil
+	return entries, nil
 }
 
 func (mb *MailBox) Close() {

mailblog.go

@@ -1,11 +1,13 @@
 package main
 
 import (
+	"encoding/json"
+	"fmt"
 	"log"
 	"net/http"
-	"net/url"
 	"os"
-	"strings"
+	"regexp"
+	"strconv"
 )
 
 func slash(w http.ResponseWriter, r *http.Request) {
@@ -14,29 +16,122 @@ func slash(w http.ResponseWriter, r *http.Request) {
 
 func main() {
 
-	var mb MailBox
+	var err error
+	var configuration BlogConfiguration
+	args := os.Args[1:]
 
-	url, err := url.Parse(os.Getenv("MAILBOX"))
+	home := os.Getenv("HOME")
+	err = os.MkdirAll(fmt.Sprintf("%s/.config/", home), 0600)
 	if err != nil {
-		log.Fatal("Bad parameter MAILBOX:", os.Getenv("MAILBOX"), "(", err, ")")
+		log.Fatal(err)
 	}
-	mb.Server = url.Host
-	mb.User = os.Getenv("IMAP_USER")
-	mb.Password = os.Getenv("IMAP_PASSWORD")
-	mb.InBox, _ = strings.CutPrefix(url.Path, "/")
+	file, err := os.Open(fmt.Sprintf("%s/.config/mailblog.json", home))
+	if err == nil {
+		defer file.Close()
+		decoder := json.NewDecoder(file)
+		err = decoder.Decode(&configuration)
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+
+	if len(args) > 0 {
+		switch args[0] {
+		case "configure":
+
+			configuration.Title, err = prompt("Blog Title", nil, "", configuration.Title, false)
+			if err != nil {
+				log.Fatal(err)
+			}
+			configuration.ShortName, err = prompt("Blog Short Name (only letters and numbers, no special signes)", nil, "blog", configuration.ShortName, false)
+			if err != nil {
+				log.Fatal(err)
+			}
+			if !regexp.MustCompile(`^[a-zA-Z0-9]+$`).MatchString(configuration.ShortName) {
+				log.Fatal("Short Name invalid")
+			}
+
+			configuration.WWWRoot, err = prompt("Web Root directory", nil, fmt.Sprintf("/var/www/html/%s", configuration.ShortName), configuration.WWWRoot, false)
+			if err != nil {
+				log.Fatal(err)
+			}
+			configuration.MailBox.Server, err = prompt("IMAP Server Hostname or IP", nil, "", configuration.MailBox.Server, false)
+			if err != nil {
+				log.Fatal(err)
+			}
+
+			configuration.MailBox.Port, err = prompt("IMAP Server Port", nil, "993", configuration.MailBox.Port, false)
+			if err != nil {
+				log.Fatal(err)
+			}
+			_, err = strconv.ParseUint(configuration.MailBox.Port, 10, 16)
+			if err != nil {
+				log.Fatal("IMAP Server Port invalid")
+			}
+			configuration.MailBox.User, err = prompt("IMAP User Login", nil, "", configuration.MailBox.User, false)
+			if err != nil {
+				log.Fatal(err)
+			}
+			configuration.MailBox.Password, err = prompt("IMAP User Password", nil, "", configuration.MailBox.Password, false)
+			if err != nil {
+				log.Fatal(err)
+			}
+
+			options := [...]string{"SSL/TLS", "StartTLS", "NoTLS"}
+			configuration.MailBox.SSL, err = prompt("IMAP SSL/TLS", options[:], "SSL/TLS", configuration.MailBox.SSL, false)
+			if err != nil {
+				log.Fatal(err)
+			}
+
+			configuration.MailBox.InBox, err = prompt("IMAP INBOX", nil, "INBOX", configuration.MailBox.InBox, false)
+			if err != nil {
+				log.Fatal(err)
+			}
+
+			file, err = os.Create(fmt.Sprintf("%s/.config/mailblog.json", home))
+			if err != nil {
+				log.Fatal(err)
+			}
+			encoder := json.NewEncoder(file)
+			err = encoder.Encode(configuration)
+			if err != nil {
+				log.Fatal(err)
+			}
+			fmt.Printf("Configuration save in %s/.config/mailblob.json\n", home)
+			return
+		}
+	}
+
+	var mb MailBox
+	mb.Configure(&configuration.MailBox)
 	err = mb.Connect()
 	if err != nil {
 		log.Fatal(err)
 	}
-	msg, err := mb.ListMessages()
+	folders, err := mb.ListFolders()
+	if err != nil {
+		log.Fatal(err)
+	}
+	log.Println(folders)
+	msgs, err := mb.GetMessages()
 	if err != nil {
 		log.Fatal(err)
 	}
 
-	log.Println(msg)
+	for _, m := range msgs {
+		log.Println(m.Id)
+		log.Println(m.Title)
+		log.Println(m.Author)
+		log.Println("Text version")
+		log.Println(m.Text)
+		log.Println("HTML version")
+		log.Println(m.HTML)
+		log.Println(m.Id)
+		log.Println()
+	}
 
 	mb.Close()
-	return
+
 	http.HandleFunc("/", slash)
 	http.ListenAndServe("0.0.0.0:8080", nil)
 }