Initial open source release

internal/compat/tdesktop/config.go

@@ -0,0 +1,56 @@
+package tdesktop
+
+import (
+	"time"
+
+	"github.com/gotd/td/tg"
+)
+
+// BuildConfig 构造 help.getConfig 返回的 tg.Config，含自建 DC 的 DCOptions。
+//
+// 字段值取 Telegram 常见默认；TDesktop 联调阶段按客户端实际需要微调
+// （记录于 docs/compatibility-matrix.md）。
+func BuildConfig(dc int, ip string, port int, now time.Time) *tg.Config {
+	return &tg.Config{
+		Date:     int(now.Unix()),
+		Expires:  int(now.Add(time.Hour).Unix()),
+		TestMode: false,
+		ThisDC:   dc,
+		DCOptions: []tg.DCOption{
+			{ID: dc, IPAddress: ip, Port: port, Static: true},
+		},
+		ChatSizeMax:          200,
+		MegagroupSizeMax:     200000,
+		ForwardedCountMax:    100,
+		OnlineUpdatePeriodMs: 120000,
+		OfflineBlurTimeoutMs: 5000,
+		OfflineIdleTimeoutMs: 30000,
+		OnlineCloudTimeoutMs: 300000,
+		NotifyCloudDelayMs:   30000,
+		NotifyDefaultDelayMs: 1500,
+		PushChatPeriodMs:     60000,
+		PushChatLimit:        2,
+		EditTimeLimit:        172800,
+		RevokeTimeLimit:      172800,
+		RevokePmTimeLimit:    172800,
+		RatingEDecay:         2419200,
+		StickersRecentLimit:  200,
+		CallReceiveTimeoutMs: 20000,
+		CallRingTimeoutMs:    90000,
+		CallConnectTimeoutMs: 30000,
+		CallPacketTimeoutMs:  10000,
+		MeURLPrefix:          "https://t.me/",
+		CaptionLengthMax:     1024,
+		MessageLengthMax:     4096,
+		WebfileDCID:          dc,
+	}
+}
+
+// NearestDC 构造 help.getNearestDc 返回值。
+func NearestDC(dc int) *tg.NearestDC {
+	return &tg.NearestDC{
+		Country:   "US",
+		ThisDC:    dc,
+		NearestDC: dc,
+	}
+}