feat(GODT-3121): adds KB suggestion scoring.

internal/frontend/grpc/event_factory.go

@@ -69,7 +69,7 @@ func NewShowMainWindowEvent() *StreamEvent {
 func NewRequestKnowledgeBaseSuggestionsEvent(suggestions kb.ArticleList) *StreamEvent {
 	s := xslices.Map(
 		suggestions,
-		func(article kb.Article) *KnowledgeBaseSuggestion {
+		func(article *kb.Article) *KnowledgeBaseSuggestion {
 			return &KnowledgeBaseSuggestion{Url: article.URL, Title: article.Title}
 		},
 	)

internal/kb/kbArticleList.json

@@ -6,7 +6,10 @@
     "keywords": [
       "start",
       "automatically",
-      "login"
+      "login",
+      "startup",
+      "start-up",
+      "boot"
     ]
   },
   {
@@ -14,7 +17,11 @@
     "url": "https://proton.me/support/bridge-automatic-update",
     "title": "Automatic Update and Bridge",
     "keywords": [
-      "TBD"
+      "update",
+      "upgrade",
+      "restart",
+      "automatic",
+      "manual"
     ]
   },
   {
@@ -22,7 +29,12 @@
     "url": "https://proton.me/support/messages-encrypted-via-bridge",
     "title": "Are my messages encrypted via Proton Mail Bridge?",
     "keywords": [
-      "TBD"
+      "encrypted",
+      "privacy",
+      "message",
+      "security",
+      "gpg",
+      "pgp"
     ]
   },
   {
@@ -70,7 +82,7 @@
     "url": "https://proton.me/support/update-required",
     "title": "Update required",
     "keywords": [
-      "TBD"
+      "update", "upgrade", "restart", "reboot"
     ]
   },
   {
@@ -78,7 +90,7 @@
     "url": "https://proton.me/support/port-already-occupied-error",
     "title": "Port already occupied error",
     "keywords": [
-      "TBD"
+      "Port", "occupied", "1143", "1025", "SMTP", "IMAP", "error"
     ]
   },
   {
@@ -86,7 +98,7 @@
     "url": "https://proton.me/support/clients-supported-bridge",
     "title": "Email clients supported by Proton Mail Bridge",
     "keywords": [
-      "TBD"
+      "client", "Outlook", "Thunderbird", "Apple Mail", "EM Client", "The Bat", "Eudora", "Postbox"
     ]
   },
   {
@@ -94,7 +106,7 @@
     "url": "https://proton.me/support/imap-smtp-and-pop3-setup",
     "title": "IMAP, SMTP, and POP3 setup",
     "keywords": [
-      "TBD"
+      "IMAP", "SMTP", "setup"
     ]
   },
   {
@@ -102,7 +114,7 @@
     "url": "https://proton.me/support/protonmail-bridge-install",
     "title": "How to install Proton Mail Bridge",
     "keywords": [
-      "TBD"
+      "install", "setup", "installer"
     ]
   },
   {
@@ -110,7 +122,7 @@
     "url": "https://proton.me/support/bridge-for-linux",
     "title": "Proton Mail Bridge for Linux",
     "keywords": [
-      "TBD"
+      "Linux", "Ubuntu", "Fedora", "Debian", "Unix", "deb", "rpm"
     ]
   },
   {
@@ -118,7 +130,8 @@
     "url": "https://proton.me/support/operating-systems-supported-bridge",
     "title": "System requirements for Proton Mail Bridge",
     "keywords": [
-      "TBD"
+      "requirement", "cpu", "memory", "Windows 7", "Windows XP", "Windows", "Windows 10", "Windows 11","Catalina", "Sonoma", "Ventura",
+      "Debian", "Ubuntu", "Fedora", "Redhat", "Big Sur", "Monterey"
     ]
   },
   {
@@ -126,7 +139,7 @@
     "url": "https://proton.me/support/protonmail-bridge-configure-client",
     "title": "How to configure your email client for Proton Mail Bridge",
     "keywords": [
-      "TBD"
+      "Client", "Outlook", "configure", "setup", "IMAP", "SMTP"
     ]
   },
   {
@@ -134,7 +147,7 @@
     "url": "https://proton.me/support/invalid-password-error-setting-email-client",
     "title": "Invalid password error while setting up email client",
     "keywords": [
-      "TBD"
+      "password", "invalid", "error"
     ]
   },
   {
@@ -142,7 +155,7 @@
     "url": "https://proton.me/support/protonmail-bridge-clients-windows-outlook-2019",
     "title": "Proton Mail Bridge Microsoft Outlook for Windows 2019 setup guide",
     "keywords": [
-      "TBD"
+      "Outlook", "2019", "setup", "configuration"
     ]
   },
   {

internal/kb/suggester.go

@@ -20,6 +20,11 @@ package kb
 import (
 	_ "embed"
 	"encoding/json"
+	"regexp"
+	"strings"
+
+	"github.com/bradenaw/juniper/xslices"
+	"golang.org/x/exp/slices"
 )
 
 //go:embed kbArticleList.json
@@ -31,9 +36,10 @@ type Article struct {
 	URL      string   `json:"url"`
 	Title    string   `json:"title"`
 	Keywords []string `json:"keywords"`
+	Score    int
 }
 
-type ArticleList []Article
+type ArticleList []*Article
 
 // GetArticleList returns the list of KB articles.
 func GetArticleList() (ArticleList, error) {
@@ -44,17 +50,35 @@ func GetArticleList() (ArticleList, error) {
 }
 
 // GetSuggestions return a list of up to 3 suggestions for KB articles matching the given user input.
-func GetSuggestions(_ string) (ArticleList, error) {
+func GetSuggestions(userInput string) (ArticleList, error) {
+	userInput = strings.ToUpper(userInput)
 	articles, err := GetArticleList()
 	if err != nil {
 		return ArticleList{}, err
 	}
 
-	// note starting with go 1.21, we will be able to do:
+	for _, article := range articles {
-	// return articles[:min(3, len(articles))]
+		for _, keyword := range article.Keywords {
-	l := len(articles)
+			if strings.Contains(userInput, strings.ToUpper(keyword)) {
-	if l > 3 {
+				article.Score++
-		l = 3
+			}
+		}
 	}
-	return articles[:l], nil
+
+	articles = xslices.Filter(articles, func(article *Article) bool { return article.Score > 0 })
+	slices.SortFunc(articles, func(lhs, rhs *Article) bool { return lhs.Score > rhs.Score })
+
+	if len(articles) > 3 {
+		return articles[:3], nil
+	}
+
+	return articles, nil
+}
+
+func simplifyUserInput(input string) string {
+	// replace any sequence not matching of the following with a single space:
+	// - letters in any language (accentuated or not)
+	// - numbers
+	// - the apostrophe character '
+	return strings.TrimSpace(regexp.MustCompile(`[^\p{L}\p{N}']+`).ReplaceAllString(input, " "))
 }

internal/kb/suggester_test.go

@@ -18,6 +18,7 @@
 package kb
 
 import (
+	"fmt"
 	"testing"
 
 	"github.com/stretchr/testify/require"
@@ -39,7 +40,18 @@ func Test_ArticleList(t *testing.T) {
 }
 
 func Test_GetSuggestions(t *testing.T) {
-	suggestions, err := GetSuggestions("")
+	suggestions, err := GetSuggestions("Thunderbird is not working, error during password")
+	require.NoError(t, err)
+	require.True(t, len(suggestions) <= 3)
+	for _, article := range suggestions {
+		fmt.Printf("Score: %v - %#v\n", article.Score, article.Title)
+	}
+
+	suggestions, err = GetSuggestions("Supercalifragilisticexpialidocious Sesquipedalian Worcestershire")
 	require.NoError(t, err)
 	require.Empty(t, suggestions)
 }
+
+func Test_simplifyUserInput(t *testing.T) {
+	require.Equal(t, "word1 ñóÄ don't déjà 33 pizza", simplifyUserInput("  \nword1    \n\tñóÄ   don't\n\n\ndéjà, 33    pizza=🍕\n,\n"))
+}