mention regex better but not 100% there

internal/db/pg/pg.go

@@ -1300,12 +1300,14 @@ func (ps *postgresService) MentionStringsToMentions(targetAccounts []string, ori
 		// okay we're good now, we can start pulling accounts out of the database
 		mentionedAccount := &gtsmodel.Account{}
 		var err error
+
+		// match username + account, case insensitive
 		if local {
 			// local user -- should have a null domain
-			err = ps.conn.Model(mentionedAccount).Where("username = ?", username).Where("? IS NULL", pg.Ident("domain")).Select()
+			err = ps.conn.Model(mentionedAccount).Where("LOWER(?) = LOWER(?)", pg.Ident("username"), username).Where("? IS NULL", pg.Ident("domain")).Select()
 		} else {
 			// remote user -- should have domain defined
-			err = ps.conn.Model(mentionedAccount).Where("username = ?", username).Where("? = ?", pg.Ident("domain"), domain).Select()
+			err = ps.conn.Model(mentionedAccount).Where("LOWER(?) = LOWER(?)", pg.Ident("username"), username).Where("LOWER(?) = LOWER(?)", pg.Ident("domain"), domain).Select()
 		}
 
 		if err != nil {
@@ -1326,6 +1328,7 @@ func (ps *postgresService) MentionStringsToMentions(targetAccounts []string, ori
 			TargetAccountID:     mentionedAccount.ID,
 			NameString:          a,
 			MentionedAccountURI: mentionedAccount.URI,
+			MentionedAccountURL: mentionedAccount.URL,
 			GTSAccount:          mentionedAccount,
 		})
 	}

internal/gtsmodel/mention.go

@@ -56,6 +56,10 @@ type Mention struct {
 	//
 	// This will not be put in the database, it's just for convenience.
 	MentionedAccountURI string `pg:"-"`
+	// MentionedAccountURL is the web url of the user mentioned.
+	//
+	// This will not be put in the database, it's just for convenience.
+	MentionedAccountURL string `pg:"-"`
 	// A pointer to the gtsmodel account of the mentioned account.
 	GTSAccount *Account `pg:"-"`
 }

internal/processing/synchronous/status/create.go

@@ -16,6 +16,7 @@ func (p *processor) Create(account *gtsmodel.Account, application *gtsmodel.Appl
 	thisStatusID := uuid.NewString()
 	thisStatusURI := fmt.Sprintf("%s/%s", uris.StatusesURI, thisStatusID)
 	thisStatusURL := fmt.Sprintf("%s/%s", uris.StatusesURL, thisStatusID)
+
 	newStatus := &gtsmodel.Status{
 		ID:                       thisStatusID,
 		URI:                      thisStatusURI,
@@ -66,6 +67,10 @@ func (p *processor) Create(account *gtsmodel.Account, application *gtsmodel.Appl
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
+	if err := p.processContent(form, account.ID, newStatus); err != nil {
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
 	// put the new status in the database, generating an ID for it in the process
 	if err := p.db.Put(newStatus); err != nil {
 		return nil, gtserror.NewErrorInternalError(err)

internal/processing/synchronous/status/util.go

@@ -3,6 +3,7 @@ package status
 import (
 	"errors"
 	"fmt"
+	"strings"
 
 	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
 	"github.com/superseriousbusiness/gotosocial/internal/db"
@@ -228,3 +229,28 @@ func (p *processor) processEmojis(form *apimodel.AdvancedStatusCreateForm, accou
 	status.Emojis = emojis
 	return nil
 }
+
+func (p *processor) processContent(form *apimodel.AdvancedStatusCreateForm, accountID string, status *gtsmodel.Status) error {
+	if form.Status == "" {
+		status.Content = ""
+		return nil
+	}
+
+	// surround the whole status in '<p>'
+	content := fmt.Sprintf(`<p>%s</p>`, form.Status)
+
+	// format mentions nicely
+	for _, menchie := range status.GTSMentions {
+		targetAccount := &gtsmodel.Account{}
+		if err := p.db.GetByID(menchie.TargetAccountID, targetAccount); err == nil {
+			mentionContent := fmt.Sprintf(`<span class="h-card"><a href="%s" class="u-url mention">@<span>%s</span></a></span>`, targetAccount.URL, targetAccount.Username)
+			content = strings.ReplaceAll(content, menchie.NameString, mentionContent)
+		}
+	}
+
+	// replace newlines with breaks
+	content = strings.ReplaceAll(content, "\n", "<br />")
+
+	status.Content = content
+	return nil
+}

internal/timeline/manager.go

@@ -54,6 +54,7 @@ type Manager interface {
 	// It should already be established before calling this function that the status/post actually belongs in the timeline!
 	Ingest(status *gtsmodel.Status, timelineAccountID string) error
 	// IngestAndPrepare takes one status and indexes it into the timeline for the given account ID, and then immediately prepares it for serving.
+	// This is useful in cases where we know the status will need to be shown at the top of a user's timeline immediately (eg., a new status is created).
 	//
 	// It should already be established before calling this function that the status/post actually belongs in the timeline!
 	IngestAndPrepare(status *gtsmodel.Status, timelineAccountID string) error

internal/timeline/timeline.go

@@ -68,8 +68,8 @@ type Timeline interface {
 
 	// PrepareXFromTop instructs the timeline to prepare x amount of posts from the top of the timeline.
 	PrepareXFromTop(amount int) error
-	// PrepareXFromIndex instrucst the timeline to prepare the next amount of entries for serialization, from index onwards.
-	PrepareXFromIndex(amount int, index int) error
+	// PrepareXFromPosition instrucst the timeline to prepare the next amount of entries for serialization, from position onwards.
+	PrepareXFromPosition(amount int, position int) error
 	// IndexOne puts a status into the timeline at the appropriate place according to its 'createdAt' property,
 	// and then immediately prepares it.
 	IndexAndPrepareOne(statusCreatedAt time.Time, statusID string) error
@@ -111,11 +111,11 @@ func NewTimeline(accountID string, db db.DB, typeConverter typeutils.TypeConvert
 	}
 }
 
-func (t *timeline) PrepareXFromIndex(amount int, index int) error {
+func (t *timeline) PrepareXFromPosition(amount int, desiredPosition int) error {
 	t.Lock()
 	defer t.Unlock()
 
-	var indexed int
+	var position int
 	var prepared int
 	var preparing bool
 	for e := t.postIndex.data.Front(); e != nil; e = e.Next() {
@@ -125,12 +125,11 @@ func (t *timeline) PrepareXFromIndex(amount int, index int) error {
 		}
 
 		if !preparing {
-			// we haven't hit the index we need to prepare from yet
-			if indexed == index {
+			// we haven't hit the position we need to prepare from yet
+			if position == desiredPosition {
 				preparing = true
 			}
-			indexed = indexed + 1
-			continue
+			position = position + 1
 		} else {
 			if err := t.prepare(entry.statusID); err != nil {
 				return fmt.Errorf("PrepareXFromTop: error preparing status with id %s: %s", entry.statusID, err)
@@ -230,7 +229,7 @@ func (t *timeline) GetXFromIDOnwards(amount int, fromID string) ([]*apimodel.Sta
 
 	// make sure we have enough posts prepared behind it to return what we're being asked for
 	if t.preparedPosts.data.Len() < amount+position {
-		if err := t.PrepareXFromIndex(amount, position); err != nil {
+		if err := t.PrepareXFromPosition(amount, position); err != nil {
 			return nil, err
 		}
 	}

internal/util/regexes.go

@@ -41,7 +41,7 @@ var (
 	mentionNameRegex = regexp.MustCompile(mentionNameRegexString)
 
 	// mention regex can be played around with here: https://regex101.com/r/qwM9D3/1
-	mentionFinderRegexString = `(?: |^|\W)(@[a-zA-Z0-9_]+(?:@[a-zA-Z0-9_\-\.]+)?)(?: |\n)`
+	mentionFinderRegexString = `(?: |^|\W)(@[a-zA-Z0-9_]+(?:@[a-zA-Z0-9_\-\.]+)?)(?:[^a-zA-Z0-9]|\W)`
 	mentionFinderRegex       = regexp.MustCompile(mentionFinderRegexString)
 
 	// hashtag regex can be played with here: https://regex101.com/r/Vhy8pg/1