move gotd fork into repo. (#111)

- update to latest telegram layer
- remove some references to fields in tg.Entities that don't exist in
the schema
- originally added here:
https://github.com/beeper/td/commit/820929062a2ba0104397bc01235ab58a9cff780e
  - referenced here
-
https://github.com/mautrix/telegramgo/commit/124f0967ed195b5a380c9bd02e170ada9710dde3
-
https://github.com/mautrix/telegramgo/commit/4205047aab2e0639217148b5d125bfaab668bd8e

pkg/gotd/telegram/message/entity/fix_test.go

@@ -0,0 +1,98 @@
+package entity
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tg"
+)
+
+func TestEnsureTrim(t *testing.T) {
+	a := require.New(t)
+
+	prefix := "pre"
+	expected := "abc\nabc"
+	b := Builder{}
+	b.Plain(prefix)
+	b.Format(expected+"\n\n\n", Bold(), Italic())
+
+	msg, ent := b.Complete()
+	a.Equal(prefix+expected, msg)
+	a.Equal([]tg.MessageEntityClass{
+		&tg.MessageEntityBold{
+			Offset: len(prefix),
+			Length: ComputeLength(expected),
+		},
+		&tg.MessageEntityItalic{
+			Offset: len(prefix),
+			Length: ComputeLength(expected),
+		},
+	}, ent)
+}
+
+func TestComplete(t *testing.T) {
+	tests := []struct {
+		name     string
+		format   func(e *Builder)
+		msg      string
+		entities []tg.MessageEntityClass
+	}{
+		{"PlainBold", func(e *Builder) {
+			e.Plain("plain").Bold("bold")
+		}, "plainbold", []tg.MessageEntityClass{
+			&tg.MessageEntityBold{
+				Offset: ComputeLength("plain"),
+				Length: ComputeLength("bold"),
+			},
+		}},
+		{"PlainBoldAndStrike", func(e *Builder) {
+			e.Plain("plain").Format("10\n\n\n\n", Bold(), Strike())
+		}, "plain10", []tg.MessageEntityClass{
+			&tg.MessageEntityBold{
+				Offset: ComputeLength("plain"),
+				Length: ComputeLength("10"),
+			},
+			&tg.MessageEntityStrike{
+				Offset: ComputeLength("plain"),
+				Length: ComputeLength("10"),
+			},
+		}},
+		{"BoldPlainBold", func(e *Builder) {
+			e.Bold("bold").Plain("plain").Bold("bold2\n\n\n\n")
+		}, "boldplainbold2", []tg.MessageEntityClass{
+			&tg.MessageEntityBold{
+				Offset: ComputeLength("boldplain"),
+				Length: ComputeLength("bold2"),
+			},
+			&tg.MessageEntityBold{
+				Offset: 0,
+				Length: ComputeLength("bold"),
+			},
+		}},
+		{"BoldBold", func(e *Builder) {
+			e.Bold("bold\n\n\n\n").Bold("bold2\n\n\n\n")
+		}, "bold\n\n\n\nbold2", []tg.MessageEntityClass{
+			&tg.MessageEntityBold{
+				Offset: 0,
+				Length: ComputeLength("bold\n\n\n\n"),
+			},
+			&tg.MessageEntityBold{
+				Offset: ComputeLength("bold\n\n\n\n"),
+				Length: ComputeLength("bold2"),
+			},
+		}},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			a := require.New(t)
+			b := Builder{}
+			test.format(&b)
+
+			msg, entities := b.Complete()
+			a.Equal(test.msg, msg)
+			a.Equal(test.entities, entities)
+		})
+	}
+}