wip chat sessions

shared_conversation_view.go

@@ -0,0 +1,107 @@
+package mujica
+
+import (
+	"cmp"
+	"fmt"
+	"log/slog"
+	"time"
+
+	"github.com/egoist/mygo/ui"
+
+	"mujicaui/icons"
+	"mujicaui/internal"
+	"mujicaui/theme"
+)
+
+// SessionRole is who wrote a message. The zero value is SessionUser.
+type SessionRole int
+
+const (
+	SessionUser SessionRole = iota
+	SessionAssistant
+	SessionSystem
+)
+
+// SessionMessage is one message of a saved conversation, as plain text.
+type SessionMessage struct {
+	Role SessionRole
+	// Author names the writer; empty uses the role's name.
+	Author string
+	Text   string
+	Time   time.Time
+}
+
+// SharedConversationViewOptions configure a SharedConversationView.
+type SharedConversationViewOptions struct {
+	Title    string
+	SharedBy string
+	SharedAt time.Time
+	Disabled bool
+}
+
+// SharedConversationView shows a shared conversation read-only, with who shared it and when; it reports Copy link.
+func SharedConversationView(c *ui.Context, messages []SessionMessage, opts SharedConversationViewOptions) ChoiceResult {
+	if opts.Title == "" {
+		panic("mujica: SharedConversationView needs a Title")
+	}
+	k := Tokens(c)
+	d := Density(c)
+	col := ui.Column(c).Grow(1).MinHeight(0).Gap(d.Unit() * 3).Disabled(opts.Disabled)
+	rows := *ui.Local(col, sharedConversationKey{}, func() *ui.ListState { return &ui.ListState{} })
+	copied := false
+	col.Children(func() {
+		ui.Row(c).Gap(d.Unit() * 3).AlignItems(ui.Center).Children(func() {
+			ui.Column(c).Grow(1).Gap(2).Children(func() {
+				ui.Text(c, opts.Title).Font(theme.SerifFont).FontSize(FontSize(c, theme.H2Size)).TextColor(k.Text)
+				by := fmt.Sprintf(msg(c, "shared_conversation_view.shared_by"), cmp.Or(opts.SharedBy, msg(c, "shared_conversation_view.someone")))
+				if !opts.SharedAt.IsZero() {
+					by += " · " + dateSeparatorLabel(c, DateOf(opts.SharedAt), DateOf(c.Now()))
+				}
+				ui.Text(c, by).FontSize(FontSize(c, theme.CaptionSize)).TextColor(k.TextMuted)
+			})
+			ui.Row(c).Gap(d.Unit()).AlignItems(ui.Center).Children(func() {
+				ui.Icon(c, icons.Must("lock")).Size(14, 14).TextColor(k.TextMuted)
+				ui.Text(c, msg(c, "shared_conversation_view.read_only")).FontSize(FontSize(c, theme.CaptionSize)).TextColor(k.TextMuted)
+			})
+			copied = Button(c, msg(c, "shared_conversation_view.copy_link"), ButtonOptions{Variant: Secondary, Icon: icons.Must("copy"),
+				Disabled: opts.Disabled}).Clicked()
+		})
+		ui.Box(c).FillWidth().Height(9).Draw(func(p *ui.Painter, r ui.Rect) { internal.RuleDiamond(p, r, 6, 5, k.Ornament) })
+		rows.Key = func(i int) any { return i }
+		ui.List(c, rows, len(messages), func(i int) { sessionMessageView(c, k, messages[i]) }).Grow(1).MinHeight(0).Gap(d.Unit() * 3)
+	})
+	if copied {
+		slog.Debug("mujica: shared_conversation_view copy_link")
+	}
+	return ChoiceResult{Element: col, changed: copied}
+}
+
+type sharedConversationKey struct{}
+
+// sessionMessageView is one read-only message: author, time and selectable plain text.
+func sessionMessageView(c *ui.Context, k theme.Tokens, m SessionMessage) {
+	d := Density(c)
+	if m.Role < SessionUser || m.Role > SessionSystem {
+		panic("mujica: SessionMessage Role out of range")
+	}
+	author := cmp.Or(m.Author, msg(c, sessionRoleKeys[m.Role]))
+	box := ui.Column(c).Gap(d.Unit()).Padding(d.Unit()*2, d.Unit()*3).Radius(theme.CardRadius)
+	if m.Role == SessionUser {
+		box.Background(k.Background).Border(theme.BorderWidth, k.Border)
+	}
+	box.Children(func() {
+		ui.Row(c).Gap(d.Unit() * 2).AlignItems(ui.Center).Children(func() {
+			ui.Text(c, author).Bold().TextColor(k.Text)
+			if !m.Time.IsZero() {
+				ui.Text(c, m.Time.Format("15:04")).FontSize(FontSize(c, theme.CaptionSize)).TextColor(k.TextMuted)
+			}
+		})
+		// Plain text: Markdown is not rendered here.
+		Text(c, m.Text, TextOptions{Selectable: true})
+	})
+}
+
+var sessionRoleKeys = map[SessionRole]string{
+	SessionUser: "shared_conversation_view.user", SessionAssistant: "shared_conversation_view.assistant",
+	SessionSystem: "shared_conversation_view.system",
+}