refactor: set viewport function

gshmm.go

@@ -275,6 +275,16 @@ func filterDatasheetNames(m model) []string {
 	return m.datasheetNames
 }
 
+// setViewport sets the viewport content.
+func (m *model) setViewport() {
+	if len(m.filteredDatasheets) == 0 {
+		return
+	}
+	lastDatasheet := m.filteredDatasheets[len(m.filteredDatasheets)-1]
+	viewportText := m.datasheetFromName(lastDatasheet)
+	m.datasheetViewport.SetContent(viewportText)
+}
+
 // Update updates the program state.
 func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	var (
@@ -291,19 +301,16 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	m.loadDatasheetSpinner, cmd = m.loadDatasheetSpinner.Update(msg)
 	cmds = append(cmds, cmd)
 
+	// TODO: implement cursor for scrolling up/down filtered
+	//       results so we can view the PDF contents as desired
+	//       it's currently just the last one (closest to input)
 	if m.input.Focused() && m.datasheetsLoaded {
 		if m.filterMode == filenameFilterMode {
 			m.filteredDatasheets = filterDatasheetNames(m)
 		} else {
 			m.filteredDatasheets = filterDatasheetContents(m)
 		}
-
-		// TODO: implement cursor for scrolling up/down filtered
-		//       results so we can view the PDF contents as desired
-		//       it's currently just the last one (closest to input)
-		lastDatasheet := m.filteredDatasheets[len(m.filteredDatasheets)-1]
-		viewportText := m.datasheetFromName(lastDatasheet)
-		m.datasheetViewport.SetContent(viewportText)
+		m.setViewport()
 	}
 
 	switch msg := msg.(type) {
@@ -311,10 +318,7 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		m.datasheets = msg.datasheets
 		m.datasheetNames = msg.datasheetNames
 		m.filteredDatasheets = msg.datasheetNames
-
-		selectedDatasheet := msg.datasheets[len(msg.datasheets)-1]
-		m.datasheetViewport.SetContent(selectedDatasheet.contents)
-
+		m.setViewport()
 		m.datasheetsLoaded = true
 	case peerDiscoveredMsg:
 		m.peers = msg.discovered
@@ -328,6 +332,8 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			return m, tea.Quit
 		case "tab":
 			m.toggleFilterMode()
+		case "enter":
+			// TODO: fire content search query
 		case "o":
 			selectedDatasheet := m.datasheets[len(m.datasheets)-1]
 			// TODO: handle error