opencode/packages/tui/internal/components/chat/messages.go
2025-07-14 11:18:08 -04:00

621 lines
16 KiB
Go

package chat
import (
"fmt"
"strings"
"github.com/charmbracelet/bubbles/v2/viewport"
tea "github.com/charmbracelet/bubbletea/v2"
"github.com/charmbracelet/lipgloss/v2"
"github.com/sst/opencode-sdk-go"
"github.com/sst/opencode/internal/app"
"github.com/sst/opencode/internal/components/dialog"
"github.com/sst/opencode/internal/layout"
"github.com/sst/opencode/internal/styles"
"github.com/sst/opencode/internal/theme"
"github.com/sst/opencode/internal/util"
)
type MessagesComponent interface {
tea.Model
View(width, height int) string
SetWidth(width int) tea.Cmd
PageUp() (tea.Model, tea.Cmd)
PageDown() (tea.Model, tea.Cmd)
HalfPageUp() (tea.Model, tea.Cmd)
HalfPageDown() (tea.Model, tea.Cmd)
First() (tea.Model, tea.Cmd)
Last() (tea.Model, tea.Cmd)
Previous() (tea.Model, tea.Cmd)
Next() (tea.Model, tea.Cmd)
ToolDetailsVisible() bool
Selected() string
}
type messagesComponent struct {
width int
app *app.App
viewport viewport.Model
cache *MessageCache
rendering bool
showToolDetails bool
tail bool
partCount int
lineCount int
selectedPart int
selectedText string
}
type renderFinishedMsg struct{}
type selectedMessagePartChangedMsg struct {
part int
}
type ToggleToolDetailsMsg struct{}
func (m *messagesComponent) Init() tea.Cmd {
return tea.Batch(m.viewport.Init())
}
func (m *messagesComponent) Selected() string {
return m.selectedText
}
func (m *messagesComponent) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
var cmds []tea.Cmd
switch msg := msg.(type) {
case app.SendMsg:
m.viewport.GotoBottom()
m.tail = true
m.selectedPart = -1
return m, nil
case app.OptimisticMessageAddedMsg:
m.tail = true
m.rendering = true
return m, m.Reload()
case dialog.ThemeSelectedMsg:
m.cache.Clear()
m.rendering = true
return m, m.Reload()
case ToggleToolDetailsMsg:
m.showToolDetails = !m.showToolDetails
m.rendering = true
return m, m.Reload()
case app.SessionLoadedMsg, app.SessionClearedMsg:
m.cache.Clear()
m.tail = true
m.rendering = true
return m, m.Reload()
case renderFinishedMsg:
m.rendering = false
if m.tail {
m.viewport.GotoBottom()
}
case selectedMessagePartChangedMsg:
return m, m.Reload()
case opencode.EventListResponseEventSessionUpdated:
if msg.Properties.Info.ID == m.app.Session.ID {
m.renderView(m.width)
if m.tail {
m.viewport.GotoBottom()
}
}
case opencode.EventListResponseEventMessageUpdated:
if msg.Properties.Info.SessionID == m.app.Session.ID {
m.renderView(m.width)
if m.tail {
m.viewport.GotoBottom()
}
}
case opencode.EventListResponseEventMessagePartUpdated:
if msg.Properties.Part.SessionID == m.app.Session.ID {
m.renderView(m.width)
if m.tail {
m.viewport.GotoBottom()
}
}
}
viewport, cmd := m.viewport.Update(msg)
m.viewport = viewport
m.tail = m.viewport.AtBottom()
cmds = append(cmds, cmd)
return m, tea.Batch(cmds...)
}
func (m *messagesComponent) renderView(width int) {
measure := util.Measure("messages.renderView")
defer measure("messageCount", len(m.app.Messages))
t := theme.CurrentTheme()
blocks := make([]string, 0)
m.partCount = 0
m.lineCount = 0
orphanedToolCalls := make([]opencode.ToolPart, 0)
for _, message := range m.app.Messages {
var content string
var cached bool
switch casted := message.Info.(type) {
case opencode.UserMessage:
userLoop:
for partIndex, part := range message.Parts {
switch part := part.(type) {
case opencode.TextPart:
remainingParts := message.Parts[partIndex+1:]
fileParts := make([]opencode.FilePart, 0)
for _, part := range remainingParts {
switch part := part.(type) {
case opencode.FilePart:
fileParts = append(fileParts, part)
}
}
flexItems := []layout.FlexItem{}
if len(fileParts) > 0 {
fileStyle := styles.NewStyle().Background(t.BackgroundElement()).Foreground(t.TextMuted()).Padding(0, 1)
mediaTypeStyle := styles.NewStyle().Background(t.Secondary()).Foreground(t.BackgroundPanel()).Padding(0, 1)
for _, filePart := range fileParts {
mediaType := ""
switch filePart.Mime {
case "text/plain":
mediaType = "txt"
case "image/png", "image/jpeg", "image/gif", "image/webp":
mediaType = "img"
mediaTypeStyle = mediaTypeStyle.Background(t.Accent())
case "application/pdf":
mediaType = "pdf"
mediaTypeStyle = mediaTypeStyle.Background(t.Primary())
}
flexItems = append(flexItems, layout.FlexItem{
View: mediaTypeStyle.Render(mediaType) + fileStyle.Render(filePart.Filename),
})
}
}
bgColor := t.BackgroundPanel()
files := layout.Render(
layout.FlexOptions{
Background: &bgColor,
Width: width - 6,
Direction: layout.Column,
},
flexItems...,
)
key := m.cache.GenerateKey(casted.ID, part.Text, width, m.selectedPart == m.partCount, files)
content, cached = m.cache.Get(key)
if !cached {
content = renderText(
m.app,
message.Info,
part.Text,
m.app.Config.Username,
m.showToolDetails,
m.partCount == m.selectedPart,
width,
files,
)
m.cache.Set(key, content)
}
if content != "" {
m = m.updateSelected(content, part.Text)
blocks = append(blocks, content)
}
// Only render the first text part
break userLoop
}
}
case opencode.AssistantMessage:
hasTextPart := false
for partIndex, p := range message.Parts {
switch part := p.(type) {
case opencode.TextPart:
hasTextPart = true
finished := casted.Time.Completed > 0
remainingParts := message.Parts[partIndex+1:]
toolCallParts := make([]opencode.ToolPart, 0)
// sometimes tool calls happen without an assistant message
// these should be included in this assistant message as well
if len(orphanedToolCalls) > 0 {
toolCallParts = append(toolCallParts, orphanedToolCalls...)
orphanedToolCalls = make([]opencode.ToolPart, 0)
}
remaining := true
for _, part := range remainingParts {
if !remaining {
break
}
switch part := part.(type) {
case opencode.TextPart:
// we only want tool calls associated with the current text part.
// if we hit another text part, we're done.
remaining = false
case opencode.ToolPart:
toolCallParts = append(toolCallParts, part)
if part.State.Status != opencode.ToolPartStateStatusCompleted || part.State.Status != opencode.ToolPartStateStatusError {
// i don't think there's a case where a tool call isn't in result state
// and the message time is 0, but just in case
finished = false
}
}
}
if finished {
key := m.cache.GenerateKey(casted.ID, part.Text, width, m.showToolDetails, m.selectedPart == m.partCount)
content, cached = m.cache.Get(key)
if !cached {
content = renderText(
m.app,
message.Info,
part.Text,
casted.ModelID,
m.showToolDetails,
m.partCount == m.selectedPart,
width,
"",
toolCallParts...,
)
m.cache.Set(key, content)
}
} else {
content = renderText(
m.app,
message.Info,
part.Text,
casted.ModelID,
m.showToolDetails,
m.partCount == m.selectedPart,
width,
"",
toolCallParts...,
)
}
if content != "" {
m = m.updateSelected(content, part.Text)
blocks = append(blocks, content)
}
case opencode.ToolPart:
if !m.showToolDetails {
if !hasTextPart {
orphanedToolCalls = append(orphanedToolCalls, part)
}
continue
}
if part.State.Status == opencode.ToolPartStateStatusCompleted || part.State.Status == opencode.ToolPartStateStatusError {
key := m.cache.GenerateKey(casted.ID,
part.ID,
m.showToolDetails,
width,
m.partCount == m.selectedPart,
)
content, cached = m.cache.Get(key)
if !cached {
content = renderToolDetails(
m.app,
part,
m.partCount == m.selectedPart,
width,
)
m.cache.Set(key, content)
}
} else {
// if the tool call isn't finished, don't cache
content = renderToolDetails(
m.app,
part,
m.partCount == m.selectedPart,
width,
)
}
if content != "" {
m = m.updateSelected(content, "")
blocks = append(blocks, content)
}
}
}
}
error := ""
if assistant, ok := message.Info.(opencode.AssistantMessage); ok {
switch err := assistant.Error.AsUnion().(type) {
case nil:
case opencode.AssistantMessageErrorMessageOutputLengthError:
error = "Message output length exceeded"
case opencode.ProviderAuthError:
error = err.Data.Message
case opencode.MessageAbortedError:
error = "Request was aborted"
case opencode.UnknownError:
error = err.Data.Message
}
}
if error != "" {
error = styles.NewStyle().Width(width - 6).Render(error)
error = renderContentBlock(
m.app,
error,
false,
width,
WithBorderColor(t.Error()),
)
blocks = append(blocks, error)
m.lineCount += lipgloss.Height(error) + 1
}
}
m.viewport.SetContent("\n" + strings.Join(blocks, "\n\n"))
if m.selectedPart == m.partCount {
m.viewport.GotoBottom()
}
}
func (m *messagesComponent) updateSelected(content string, selectedText string) *messagesComponent {
if m.selectedPart == m.partCount {
m.viewport.SetYOffset(m.lineCount - (m.viewport.Height() / 2) + 4)
m.selectedText = selectedText
}
m.partCount++
m.lineCount += lipgloss.Height(content) + 1
return m
}
func (m *messagesComponent) header(width int) string {
if m.app.Session.ID == "" {
return ""
}
t := theme.CurrentTheme()
base := styles.NewStyle().Foreground(t.Text()).Background(t.Background()).Render
muted := styles.NewStyle().Foreground(t.TextMuted()).Background(t.Background()).Render
headerLines := []string{}
headerLines = append(
headerLines,
util.ToMarkdown("# "+m.app.Session.Title, width-6, t.Background()),
)
share := ""
if m.app.Session.Share.URL != "" {
share = muted(m.app.Session.Share.URL + " /unshare")
} else {
share = base("/share") + muted(" to create a shareable link")
}
sessionInfo := ""
tokens := float64(0)
cost := float64(0)
contextWindow := m.app.Model.Limit.Context
for _, message := range m.app.Messages {
if assistant, ok := message.Info.(opencode.AssistantMessage); ok {
cost += assistant.Cost
usage := assistant.Tokens
if usage.Output > 0 {
if assistant.Summary {
tokens = usage.Output
continue
}
tokens = (usage.Input +
usage.Cache.Write +
usage.Cache.Read +
usage.Output +
usage.Reasoning)
}
}
}
// Check if current model is a subscription model (cost is 0 for both input and output)
isSubscriptionModel := m.app.Model != nil &&
m.app.Model.Cost.Input == 0 && m.app.Model.Cost.Output == 0
sessionInfo = styles.NewStyle().
Foreground(t.TextMuted()).
Background(t.Background()).
Render(formatTokensAndCost(tokens, contextWindow, cost, isSubscriptionModel))
background := t.Background()
share = layout.Render(
layout.FlexOptions{
Background: &background,
Direction: layout.Row,
Justify: layout.JustifySpaceBetween,
Align: layout.AlignStretch,
Width: width - 6,
},
layout.FlexItem{
View: share,
},
layout.FlexItem{
View: sessionInfo,
},
)
headerLines = append(headerLines, share)
header := strings.Join(headerLines, "\n")
header = styles.NewStyle().
Background(t.Background()).
Width(width).
PaddingLeft(2).
PaddingRight(2).
BorderLeft(true).
BorderRight(true).
BorderBackground(t.Background()).
BorderForeground(t.BackgroundElement()).
BorderStyle(lipgloss.ThickBorder()).
Render(header)
return "\n" + header + "\n"
}
func formatTokensAndCost(
tokens float64,
contextWindow float64,
cost float64,
isSubscriptionModel bool,
) string {
// Format tokens in human-readable format (e.g., 110K, 1.2M)
var formattedTokens string
switch {
case tokens >= 1_000_000:
formattedTokens = fmt.Sprintf("%.1fM", float64(tokens)/1_000_000)
case tokens >= 1_000:
formattedTokens = fmt.Sprintf("%.1fK", float64(tokens)/1_000)
default:
formattedTokens = fmt.Sprintf("%d", int(tokens))
}
// Remove .0 suffix if present
if strings.HasSuffix(formattedTokens, ".0K") {
formattedTokens = strings.Replace(formattedTokens, ".0K", "K", 1)
}
if strings.HasSuffix(formattedTokens, ".0M") {
formattedTokens = strings.Replace(formattedTokens, ".0M", "M", 1)
}
percentage := (float64(tokens) / float64(contextWindow)) * 100
if isSubscriptionModel {
return fmt.Sprintf(
"%s/%d%%",
formattedTokens,
int(percentage),
)
}
formattedCost := fmt.Sprintf("$%.2f", cost)
return fmt.Sprintf(
"%s/%d%% (%s)",
formattedTokens,
int(percentage),
formattedCost,
)
}
func (m *messagesComponent) View(width, height int) string {
t := theme.CurrentTheme()
if m.rendering {
return lipgloss.Place(
width,
height,
lipgloss.Center,
lipgloss.Center,
styles.NewStyle().Background(t.Background()).Render(""),
styles.WhitespaceStyle(t.Background()),
)
}
header := m.header(width)
m.viewport.SetWidth(width)
m.viewport.SetHeight(height - lipgloss.Height(header))
return styles.NewStyle().
Background(t.Background()).
Render(header + "\n" + m.viewport.View())
}
func (m *messagesComponent) SetWidth(width int) tea.Cmd {
if m.width == width {
return nil
}
// Clear cache on resize since width affects rendering
if m.width != width {
m.cache.Clear()
}
m.width = width
m.viewport.SetWidth(width)
m.renderView(width)
return nil
}
func (m *messagesComponent) Reload() tea.Cmd {
return func() tea.Msg {
m.renderView(m.width)
return renderFinishedMsg{}
}
}
func (m *messagesComponent) PageUp() (tea.Model, tea.Cmd) {
m.viewport.ViewUp()
return m, nil
}
func (m *messagesComponent) PageDown() (tea.Model, tea.Cmd) {
m.viewport.ViewDown()
return m, nil
}
func (m *messagesComponent) HalfPageUp() (tea.Model, tea.Cmd) {
m.viewport.HalfViewUp()
return m, nil
}
func (m *messagesComponent) HalfPageDown() (tea.Model, tea.Cmd) {
m.viewport.HalfViewDown()
return m, nil
}
func (m *messagesComponent) Previous() (tea.Model, tea.Cmd) {
m.tail = false
if m.selectedPart < 0 {
m.selectedPart = m.partCount
}
m.selectedPart--
if m.selectedPart < 0 {
m.selectedPart = 0
}
return m, util.CmdHandler(selectedMessagePartChangedMsg{
part: m.selectedPart,
})
}
func (m *messagesComponent) Next() (tea.Model, tea.Cmd) {
m.tail = false
m.selectedPart++
if m.selectedPart >= m.partCount {
m.selectedPart = m.partCount
}
return m, util.CmdHandler(selectedMessagePartChangedMsg{
part: m.selectedPart,
})
}
func (m *messagesComponent) First() (tea.Model, tea.Cmd) {
m.selectedPart = 0
m.tail = false
return m, util.CmdHandler(selectedMessagePartChangedMsg{
part: m.selectedPart,
})
}
func (m *messagesComponent) Last() (tea.Model, tea.Cmd) {
m.selectedPart = m.partCount - 1
m.tail = true
return m, util.CmdHandler(selectedMessagePartChangedMsg{
part: m.selectedPart,
})
}
func (m *messagesComponent) ToolDetailsVisible() bool {
return m.showToolDetails
}
func NewMessagesComponent(app *app.App) MessagesComponent {
vp := viewport.New()
vp.KeyMap = viewport.KeyMap{}
return &messagesComponent{
app: app,
viewport: vp,
showToolDetails: true,
cache: NewMessageCache(),
tail: true,
selectedPart: -1,
}
}