3 files changed, 63 insertions, 5 deletions
diff --git a/internal/client/ui/core/chat/chat.go b/internal/client/ui/core/chat/chat.go
index 8600f46..c41c313 100644
--- a/internal/client/ui/core/chat/chat.go
+++ b/internal/client/ui/core/chat/chat.go
@@ -7,8 +7,12 @@ import (
 	tea "github.com/charmbracelet/bubbletea"
 	"github.com/charmbracelet/lipgloss"
 
+	"github.com/kyren223/eko/internal/client/gateway"
 	"github.com/kyren223/eko/internal/client/ui/colors"
+	"github.com/kyren223/eko/internal/client/ui/core/state"
 	"github.com/kyren223/eko/internal/client/ui/viminput"
+	"github.com/kyren223/eko/internal/packet"
+	"github.com/kyren223/eko/pkg/snowflake"
 )
 
 var (
@@ -28,6 +32,10 @@ type Model struct {
 	vi     viminput.Model
 	focus  bool
 	locked bool
+
+	networkIndex   int // Note this might be invalid, rely on frequencyIndex
+	receiverIndex  *int
+	frequencyIndex *int
 }
 
 func New() Model {
@@ -126,12 +134,17 @@ func (m Model) Update(msg tea.Msg) (Model, tea.Cmd) {
 	}
 
 	if m.locked {
-		InNormal := m.vi.Mode() == viminput.NormalMode
-		if key, ok := msg.(tea.KeyMsg); ok && InNormal {
-			if key.String() == "q" {
+		if key, ok := msg.(tea.KeyMsg); ok {
+			InNormal := m.vi.Mode() == viminput.NormalMode
+			if key.String() == "q" && InNormal {
 				m.locked = false
 				return m, nil
 			}
+
+			if key.Type == tea.KeyEnter {
+				cmd := m.sendMessage()
+				return m, cmd
+			}
 		}
 
 		var cmd tea.Cmd
@@ -165,3 +178,41 @@ func (m *Model) Blur() {
 func (m Model) Locked() bool {
 	return m.locked
 }
+
+func (m *Model) sendMessage() tea.Cmd {
+	message := m.vi.String()
+	if len(message) > MaxCharCount {
+		return nil
+	}
+	if len(strings.TrimSpace(message)) == 0 {
+		return nil
+	}
+
+	m.vi.Reset()
+
+	var receiverId *snowflake.ID = nil
+	if m.receiverIndex != nil {
+		// TODO: do nothing for now, until trusted friends are implemented
+	}
+
+	var frequencyId *snowflake.ID = nil
+	if m.frequencyIndex != nil {
+		network := state.State.Networks[m.networkIndex]
+		frequencyId = &network.Frequencies[*m.frequencyIndex].ID
+	}
+
+	return gateway.Send(&packet.SendMessage{
+		ReceiverID:  receiverId,
+		FrequencyID: frequencyId,
+		Content:     message,
+	})
+}
+
+func (m *Model) SetNetworkIndex(networkIndex int) {
+	m.networkIndex = networkIndex
+}
+
+func (m *Model) Set(receiverIndex, frequencyIndex *int) {
+	m.receiverIndex = receiverIndex
+	m.frequencyIndex = frequencyIndex
+}
diff --git a/internal/client/ui/core/core.go b/internal/client/ui/core/core.go
index 5d87294..5115274 100644
--- a/internal/client/ui/core/core.go
+++ b/internal/client/ui/core/core.go
@@ -288,9 +288,12 @@ func (m *Model) updateConnected(msg tea.Msg) tea.Cmd {
 	switch m.focus {
 	case FocusNetworkList:
 		m.networkList, cmd = m.networkList.Update(msg)
-		m.frequencyList.Set(m.networkList.Index())
+		m.frequencyList.SetNetworkIndex(m.networkList.Index())
+		m.chat.SetNetworkIndex(m.networkList.Index())
 	case FocusFrequencyList:
 		m.frequencyList, cmd = m.frequencyList.Update(msg)
+		index := m.frequencyList.Index()
+		m.chat.Set(nil, &index)
 	case FocusChat:
 		m.chat, cmd = m.chat.Update(msg)
 	}
diff --git a/internal/client/ui/core/frequencylist/frequencylist.go b/internal/client/ui/core/frequencylist/frequencylist.go
index 3b7f800..c00b8cd 100644
--- a/internal/client/ui/core/frequencylist/frequencylist.go
+++ b/internal/client/ui/core/frequencylist/frequencylist.go
@@ -148,7 +148,7 @@ func (m Model) Swap(dir int) (Model, tea.Cmd) {
 	return m, cmd
 }
 
-func (m *Model) Set(index int) {
+func (m *Model) SetNetworkIndex(index int) {
 	m.networkIndex = index
 }
 
@@ -162,3 +162,7 @@ func (m Model) Network() *packet.FullNetwork {
 	}
 	return &state.State.Networks[m.networkIndex]
 }
+
+func (m *Model) Index() int {
+	return  m.index
+}