internal/api/issue235_type_test.go

@@ -0,0 +1,40 @@
+package api
+
+import "testing"
+
+// #235: Type column. Text pastes show the language, attachment pastes show
+// the file extension (lowercase, no dot).
+func TestDisplayType(t *testing.T) {
+	lang := "python"
+	cases := []struct {
+		lang *string
+		att  string
+		want string
+	}{
+		{nil, "", "text"},
+		{&lang, "", "python"},
+		{&lang, "report.pdf", "pdf"},
+		{nil, "photo.PNG", "png"},
+		{&lang, "archive.tar.gz", "gz"},
+		{&lang, "noext", "python"},     // no extension: fall back to language
+		{&lang, ".hidden", "python"},   // dotfile: no extension
+		{&lang, "dir/name.txt", "txt"}, // path component only
+	}
+	for _, c := range cases {
+		if got := displayType(c.lang, c.att); got != c.want {
+			t.Errorf("displayType(%v, %q) = %q, want %q", c.lang, c.att, got, c.want)
+		}
+	}
+}
+
+func TestAttachmentExtName(t *testing.T) {
+	cases := map[string]string{
+		"a.txt": "txt", "A.PNG": "png", "noext": "", ".hidden": "",
+		"x.": "", "dir/b.md": "md", "": "",
+	}
+	for in, want := range cases {
+		if got := attachmentExtName(in); got != want {
+			t.Errorf("attachmentExtName(%q) = %q, want %q", in, got, want)
+		}
+	}
+}

internal/api/server.go

@@ -315,11 +315,26 @@ func (a *apiServer) handleGetPaste(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, 200, map[string]any{
 		"id": row.ID, "content": row.Content, "content_type": row.ContentType,
 		"language": store.NullStrPtr(row.Language), "title": store.NullStrPtr(row.Title), "created_at": row.CreatedAt,
+		"type":     a.pasteTypeLabel(row),
 		"view_count": row.ViewCount, "visibility": row.Visibility,
 		"reads_remaining": rem,
 	})
 }
 
+// pasteTypeLabel computes the Type value for a single paste (#235): file
+// extension for attachment pastes, else the stored language, else "text".
+func (a *apiServer) pasteTypeLabel(row *store.PasteRow) string {
+	if att, err := a.store.GetAttachmentForPaste(row.ID); err == nil && att != nil {
+		if ext := attachmentExtName(att.Filename); ext != "" {
+			return ext
+		}
+	}
+	if !row.Language.Valid || row.Language.String == "" {
+		return "text"
+	}
+	return row.Language.String
+}
+
 func (a *apiServer) handleDeletePaste(w http.ResponseWriter, r *http.Request) {
 	id := chi.URLParam(r, "id")
 	row, err := a.store.GetPaste(id)
@@ -376,6 +391,33 @@ func (a *apiServer) deletionAuthorized(r *http.Request, row *store.PasteRow) boo
 		row.ViewerID.String != "" && row.ViewerID.String == vid
 }
 
+// displayType returns the Type-column value for a list row (#235): the file
+// extension for attachment pastes, otherwise the detected language (default
+// "text").
+func displayType(lang *string, attFilename string) string {
+	if ext := attachmentExtName(attFilename); ext != "" {
+		return ext
+	}
+	if lang == nil || *lang == "" {
+		return "text"
+	}
+	return *lang
+}
+
+// attachmentExtName returns the lowercase extension (without dot) of a
+// filename, or "" when there is none.
+func attachmentExtName(filename string) string {
+	name := filename
+	if i := strings.LastIndexByte(name, '/'); i >= 0 {
+		name = name[i+1:]
+	}
+	i := strings.LastIndexByte(name, '.')
+	if i <= 0 || i == len(name)-1 {
+		return ""
+	}
+	return strings.ToLower(name[i+1:])
+}
+
 // handleListMine serves /api/mine: pastes created from this browser (#37).
 func (a *apiServer) handleListMine(w http.ResponseWriter, r *http.Request) {
 	vid := currentViewerID(r)
@@ -394,7 +436,7 @@ func (a *apiServer) handleListMine(w http.ResponseWriter, r *http.Request) {
 	for _, row := range rows {
 		lang, title := store.NullStrPtr(row.Language), store.NullStrPtr(row.Title)
 		items = append(items, map[string]any{
-			"id": row.ID, "title": title, "language": lang,
+			"id": row.ID, "title": title, "language": lang, "type": displayType(lang, row.AttFilename),
 			"created_at": row.CreatedAt, "view_count": row.ViewCount, "size": row.Size,
 			"custom_slug": store.NullStrPtr(row.CustomSlug), "visibility": row.Visibility,
 			"is_can": row.IsCan,
@@ -415,7 +457,7 @@ func (a *apiServer) handleListPublic(w http.ResponseWriter, r *http.Request) {
 	for _, row := range rows {
 		lang, title := store.NullStrPtr(row.Language), store.NullStrPtr(row.Title)
 		items = append(items, map[string]any{
-			"id": row.ID, "title": title, "language": lang,
+			"id": row.ID, "title": title, "language": lang, "type": displayType(lang, row.AttFilename),
 			"created_at": row.CreatedAt, "view_count": row.ViewCount, "size": row.Size,
 			"custom_slug": store.NullStrPtr(row.CustomSlug),
 			"is_can":      row.IsCan,

internal/store/store.go

@@ -63,6 +63,7 @@ type PasteRow struct {
 	DeletionToken sql.NullString
 	ViewerID      sql.NullString
 	IsCan         bool // set on list rows that are cans (#4)
+	AttFilename   string // attachment filename when the paste is a file paste (#235); empty otherwise
 }
 
 type CanRow struct {
@@ -304,11 +305,12 @@ func (s *Store) GetPaste(idOrSlug string) (*PasteRow, error) {
 // listed, and password-protected pastes are excluded at the query level
 // (#65) so their metadata (title, slug, existence) never leaks.
 func (s *Store) ListPublic(limit, offset int) ([]PasteRow, int, error) {
-	rows, err := s.db.Query(`SELECT id, custom_slug, content_type, language, title, visibility, created_at, view_count, LENGTH(content), 0
-		FROM pastes
-		WHERE visibility='public' AND deleted_at IS NULL AND can_id IS NULL AND password_hash IS NULL AND (expires_at IS NULL OR expires_at > ?)
+	rows, err := s.db.Query(`SELECT p.id, p.custom_slug, p.content_type, p.language, p.title, p.visibility, p.created_at, p.view_count, LENGTH(p.content), 0, COALESCE(a.filename, '')
+		FROM pastes p
+		LEFT JOIN attachments a ON a.paste_id = p.id
+		WHERE p.visibility='public' AND p.deleted_at IS NULL AND p.can_id IS NULL AND p.password_hash IS NULL AND (p.expires_at IS NULL OR p.expires_at > ?)
 		UNION ALL
-		SELECT id, NULL, 'text/plain', NULL, title, visibility, created_at, 0, 0, 1
+		SELECT id, NULL, 'text/plain', NULL, title, visibility, created_at, 0, 0, 1, ''
 		FROM paste_cans
 		WHERE visibility='public' AND deleted_at IS NULL AND (expires_at IS NULL OR expires_at > ?)
 		ORDER BY created_at DESC LIMIT ? OFFSET ?`, time.Now().Unix(), time.Now().Unix(), limit, offset)
@@ -321,7 +323,7 @@ func (s *Store) ListPublic(limit, offset int) ([]PasteRow, int, error) {
 		var r PasteRow
 		var cs, lang, title sql.NullString
 		var isCan int
-		if err := rows.Scan(&r.ID, &cs, &r.ContentType, &lang, &title, &r.Visibility, &r.CreatedAt, &r.ViewCount, &r.Size, &isCan); err != nil {
+		if err := rows.Scan(&r.ID, &cs, &r.ContentType, &lang, &title, &r.Visibility, &r.CreatedAt, &r.ViewCount, &r.Size, &isCan, &r.AttFilename); err != nil {
 			return nil, 0, err
 		}
 		r.CustomSlug = cs
@@ -339,11 +341,12 @@ func (s *Store) ListPublic(limit, offset int) ([]PasteRow, int, error) {
 
 // ListMine lists pastes created from the given viewer id (browser cookie), newest first.
 func (s *Store) ListMine(viewerID string, limit, offset int) ([]PasteRow, int, error) {
-	rows, err := s.db.Query(`SELECT id, custom_slug, language, title, visibility, created_at, view_count, LENGTH(content), 0
-		FROM pastes
-		WHERE viewer_id = ? AND deleted_at IS NULL AND can_id IS NULL AND (expires_at IS NULL OR expires_at > ?)
+	rows, err := s.db.Query(`SELECT p.id, p.custom_slug, p.language, p.title, p.visibility, p.created_at, p.view_count, LENGTH(p.content), 0, COALESCE(a.filename, '')
+		FROM pastes p
+		LEFT JOIN attachments a ON a.paste_id = p.id
+		WHERE p.viewer_id = ? AND p.deleted_at IS NULL AND p.can_id IS NULL AND (p.expires_at IS NULL OR p.expires_at > ?)
 		UNION ALL
-		SELECT id, NULL, NULL, title, visibility, created_at, 0, 0, 1
+		SELECT id, NULL, NULL, title, visibility, created_at, 0, 0, 1, ''
 		FROM paste_cans
 		WHERE viewer_id = ? AND deleted_at IS NULL AND (expires_at IS NULL OR expires_at > ?)
 		ORDER BY created_at DESC LIMIT ? OFFSET ?`, viewerID, time.Now().Unix(), viewerID, time.Now().Unix(), limit, offset)
@@ -356,7 +359,7 @@ func (s *Store) ListMine(viewerID string, limit, offset int) ([]PasteRow, int, e
 		var r PasteRow
 		var cs, lang, title sql.NullString
 		var isCan int
-		if err := rows.Scan(&r.ID, &cs, &lang, &title, &r.Visibility, &r.CreatedAt, &r.ViewCount, &r.Size, &isCan); err != nil {
+		if err := rows.Scan(&r.ID, &cs, &lang, &title, &r.Visibility, &r.CreatedAt, &r.ViewCount, &r.Size, &isCan, &r.AttFilename); err != nil {
 			return nil, 0, err
 		}
 		r.CustomSlug, r.Language, r.Title = cs, lang, title

internal/web/static/history.js

@@ -9,7 +9,7 @@ const t = PaletteTable.init({
       ? `${t.esc(it.title)}${it.is_can ? ' <span class="badge" title="Can — bundle of items">can</span>' : ''}`
       : `<a class="slug paste-name" href="/${t.esc(it.id)}">${t.esc(it.id)}</a>${it.is_can ? ' <span class="badge" title="Can — bundle of items">can</span>' : ''}`) +
     `</td>` +
-    `<td><span class="badge">${t.esc(it.language || 'text')}</span></td>` +
+    `<td><span class="badge">${t.esc(it.type || it.language || 'text')}</span></td>` +
     `<td class="dim">${t.fmtSize(it.size)}</td><td class="dim">${it.view_count}</td><td class="dim" data-ts="${it.created_at}">${t.ago(it.created_at)}</td>` +
     (it.custom_slug ? `<td><a class="slug url-link" href="/${t.esc(it.custom_slug)}">/${t.esc(it.custom_slug)}</a></td>` : `<td class="dim">none</td>`) +
     `<td class="dim"><a class="id-link" href="/${t.esc(it.id)}">${t.esc(it.id)}</a></td></tr>`,

internal/web/static/mine.js

@@ -21,7 +21,7 @@ const t = PaletteTable.init({
       ? `${t.esc(it.title)}${it.is_can ? ' <span class="badge" title="Can — bundle of items">can</span>' : ''}`
       : `<a class="slug paste-name" href="/${t.esc(it.id)}">${t.esc(it.id)}</a>${it.is_can ? ' <span class="badge" title="Can — bundle of items">can</span>' : ''}`) +
     `</td>` +
-    `<td><span class="badge">${t.esc(it.language || 'text')}</span></td>` +
+    `<td><span class="badge">${t.esc(it.type || it.language || 'text')}</span></td>` +
     `<td class="dim">${t.fmtSize(it.size)}</td><td class="dim" data-ts="${it.created_at}">${t.ago(it.created_at)}</td>` +
     (it.custom_slug ? `<td><a class="slug url-link" href="/${t.esc(it.custom_slug)}">/${t.esc(it.custom_slug)}</a></td>` : `<td class="dim">none</td>`) +
     `<td class="dim"><a class="id-link" href="/${t.esc(it.id)}">${t.esc(it.id)}</a></td>` +

internal/web/static/table.js

@@ -16,7 +16,7 @@ const PaletteTable = (() => {
   const sortVal = (it, k) => {
     let v = it[k];
     if (k === 'title' || k === 'custom_slug') v = (v == null || v === '') ? null : String(v).toLowerCase();
-    if (k === 'language') v = (v == null || v === '') ? 'text' : String(v).toLowerCase();
+    if (k === 'language' || k === 'type') v = (v == null || v === '') ? 'text' : String(v).toLowerCase();
     if (k === 'size' || k === 'view_count' || k === 'created_at') return v == null ? -1 : v;
     return v == null ? null : v;
   };

internal/web/templates/history.html

@@ -11,7 +11,7 @@
       <colgroup><col class="col-a"><col class="col-b"><col class="col-c"><col class="col-d"><col class="col-e"><col class="col-f"><col class="col-g"></colgroup>
       <thead><tr>
         <th data-sort="title" class="sortable">Paste<span class="sort-ind"></span></th>
-        <th data-sort="language" class="sortable">Language<span class="sort-ind"></span></th>
+        <th data-sort="type" class="sortable">Type<span class="sort-ind"></span></th>
         <th data-sort="size" class="sortable">Size<span class="sort-ind"></span></th>
         <th data-sort="view_count" class="sortable">Views<span class="sort-ind"></span></th>
         <th data-sort="created_at" class="sortable">Created<span class="sort-ind"></span></th>

internal/web/templates/mine.html

@@ -11,7 +11,7 @@
       <colgroup><col class="col-a"><col class="col-b"><col class="col-c"><col class="col-d2"><col class="col-e"><col class="col-f"><col class="col-del"></colgroup>
       <thead><tr>
         <th data-sort="title" class="sortable">Paste<span class="sort-ind"></span></th>
-        <th data-sort="language" class="sortable">Language<span class="sort-ind"></span></th>
+        <th data-sort="type" class="sortable">Type<span class="sort-ind"></span></th>
         <th data-sort="size" class="sortable">Size<span class="sort-ind"></span></th>
         <th data-sort="created_at" class="sortable">Created<span class="sort-ind"></span></th>
         <th data-sort="custom_slug" class="sortable">URL<span class="sort-ind"></span></th>

internal/web/templates/paste.html

@@ -20,7 +20,7 @@
       </button>
       <div class="stats-body" id="stats-body" hidden>
         <div class="stats-grid">
-          <span class="stats-k">Language</span><span class="stats-v">{{if .Language}}{{.Language}}{{else}}text{{end}}</span>
+          <span class="stats-k">Type</span><span class="stats-v">{{.TypeLabel}}</span>
           <span class="stats-k">Size</span><span class="stats-v">{{.SizeHuman}} ({{.LineCount}} lines)</span>
           <span class="stats-k">Views</span><span class="stats-v">{{.ViewCount}}</span>
           <span class="stats-k">Created</span><span class="stats-v" data-ts="{{.CreatedAtUnix}}">{{.CreatedAgo}}</span>

internal/web/web.go

@@ -231,6 +231,20 @@ func (h *Handlers) renderPageStatus(w http.ResponseWriter, name string, status i
 	}
 }
 
+// attachmentExt returns the lowercase file extension (without dot) of a
+// filename, or "" when the name has none. Used by the Type display (#235).
+func attachmentExt(filename string) string {
+	name := filename
+	if i := strings.LastIndexByte(name, '/'); i >= 0 {
+		name = name[i+1:]
+	}
+	i := strings.LastIndexByte(name, '.')
+	if i <= 0 || i == len(name)-1 {
+		return ""
+	}
+	return strings.ToLower(name[i+1:])
+}
+
 func (h *Handlers) renderPaste(w http.ResponseWriter, row *store.PasteRow, justCreated bool, deletionToken string, readsRemaining *int) {
 	lines := strings.Count(row.Content, "\n") + 1
 	gutter := ""
@@ -258,7 +272,17 @@ func (h *Handlers) renderPaste(w http.ResponseWriter, row *store.PasteRow, justC
 	if attachment != nil {
 		summarySize = int(attachment.Size)
 	}
-	summary := fmt.Sprintf("%s · %s · %d views · %s", lang, humanSize(summarySize), row.ViewCount, agoString(row.CreatedAt))
+	// #235: column renamed to "Type". Text pastes keep the detected
+	// language; attachment pastes show the file extension instead.
+	attExt := ""
+	typeLabel := lang
+	if attachment != nil {
+		if ext := attachmentExt(attachment.Filename); ext != "" {
+			attExt = ext
+			typeLabel = ext
+		}
+	}
+	summary := fmt.Sprintf("%s · %s · %d views · %s", typeLabel, humanSize(summarySize), row.ViewCount, agoString(row.CreatedAt))
 	// #221: image attachments render the image, not a text/code box. Size
 	// comes from the attachment's actual file size, not the text content.
 	attImage := false
@@ -278,7 +302,10 @@ func (h *Handlers) renderPaste(w http.ResponseWriter, row *store.PasteRow, justC
 		"Page":          "paste",
 		"ID":            row.ID,
 		"Title":         row.Title.String,
-		"Language":      row.Language.String,
+		"Language":      typeLabel,
+		"TypeLabel":     typeLabel,
+		"HasAttachment":  attachment != nil,
+		"AttachmentExt": attExt,
 		"StatsSummary":  summary,
 		"SizeHuman":     sizeHuman,
 		"HasPassword":   row.PasswordHash.Valid,