feat: sync rich text message support

internal/rpc/convert_rich_message.go

@@ -2,6 +2,7 @@ package rpc
 
 import (
 	"context"
+	"strconv"
 
 	"github.com/gotd/td/bin"
 	"github.com/gotd/td/tg"
@@ -50,6 +51,81 @@ func decodeRichBlocks(data []byte) ([]tg.PageBlockClass, error) {
 	return out, nil
 }
 
+func normalizeRichBlocksForClients(blocks []tg.PageBlockClass) {
+	for _, block := range blocks {
+		normalizeRichBlockForClients(block)
+	}
+}
+
+func normalizeRichBlockForClients(block tg.PageBlockClass) {
+	switch b := block.(type) {
+	case *tg.PageBlockList:
+		for _, item := range b.Items {
+			if item, ok := item.(*tg.PageListItemBlocks); ok {
+				normalizeRichBlocksForClients(item.Blocks)
+			}
+		}
+	case *tg.PageBlockCover:
+		normalizeRichBlockForClients(b.Cover)
+	case *tg.PageBlockEmbedPost:
+		normalizeRichBlocksForClients(b.Blocks)
+	case *tg.PageBlockCollage:
+		normalizeRichBlocksForClients(b.Items)
+	case *tg.PageBlockSlideshow:
+		normalizeRichBlocksForClients(b.Items)
+	case *tg.PageBlockOrderedList:
+		normalizeOrderedListForClients(b)
+	case *tg.PageBlockDetails:
+		normalizeRichBlocksForClients(b.Blocks)
+	case *tg.PageBlockBlockquoteBlocks:
+		normalizeRichBlocksForClients(b.Blocks)
+	}
+}
+
+func normalizeOrderedListForClients(list *tg.PageBlockOrderedList) {
+	if list == nil {
+		return
+	}
+	reversed := list.Reversed || list.Flags.Has(2)
+	current := 1
+	if list.Flags.Has(0) || list.Start != 0 {
+		current = list.Start
+	} else if reversed {
+		current = len(list.Items)
+	}
+	step := 1
+	if reversed {
+		step = -1
+	}
+	for _, item := range list.Items {
+		value := current
+		switch i := item.(type) {
+		case *tg.PageListOrderedItemText:
+			if v, ok := i.GetValue(); ok || i.Value != 0 {
+				value = v
+				if !ok {
+					value = i.Value
+				}
+			}
+			if num, ok := i.GetNum(); !ok || num == "" {
+				i.SetNum(strconv.Itoa(value))
+			}
+		case *tg.PageListOrderedItemBlocks:
+			if v, ok := i.GetValue(); ok || i.Value != 0 {
+				value = v
+				if !ok {
+					value = i.Value
+				}
+			}
+			if num, ok := i.GetNum(); !ok || num == "" {
+				i.SetNum(strconv.Itoa(value))
+			}
+			normalizeRichBlocksForClients(i.Blocks)
+		}
+		current = value + step
+	}
+}
+
 // domainRichMessageFromInput 把入站 tg.InputRichMessageClass 解析为 domain 快照：
 // 序列化 blocks + 按 id 解析内嵌 photos/documents（复用 sendMedia 同款媒体解析）。
 // 返回 nil 表示无富文本载荷。Phase 1 仅认 *tg.InputRichMessage。
@@ -62,9 +138,16 @@ func (r *Router) domainRichMessageFromInput(ctx context.Context, input tg.InputR
 		// Phase 1：HTML/Markdown 变体需服务端解析为 PageBlock，尚未支持。
 		return nil, mediaInvalidErr()
 	}
-	if r.deps.Files == nil {
+	if len(in.Blocks) == 0 {
+		if len(in.Photos) == 0 && len(in.Documents) == 0 {
+			return nil, nil
+		}
+		return nil, mediaInvalidErr()
+	}
+	if (len(in.Photos) > 0 || len(in.Documents) > 0) && r.deps.Files == nil {
 		return nil, notImplementedErr()
 	}
+	normalizeRichBlocksForClients(in.Blocks)
 	blocks, err := encodeRichBlocks(in.Blocks)
 	if err != nil {
 		return nil, err
@@ -132,3 +215,11 @@ func tgRichMessage(m *domain.MessageRichMessage) (*tg.RichMessage, error) {
 	}
 	return out, nil
 }
+
+func mustTGRichMessage(m *domain.MessageRichMessage) *tg.RichMessage {
+	out, err := tgRichMessage(m)
+	if err != nil {
+		panic("invalid stored rich_message: " + err.Error())
+	}
+	return out
+}