feat: initial whatsmeow bot with command handler and context helpers

Core framework (Handler, Command, Default muxer) in core/ package. Command self-registration via init() with blank imports in cmds/. Context helpers (send, reply, download, upload) in context/ package. Permission system with GROUP_ONLY / PRIVATE_ONLY checks. WhatsApp client configured as Safari with history sync disabled.
2026-07-06 18:53:04 +07:00
commit faeda0b21d
14 changed files with 1054 additions and 0 deletions
@@ -0,0 +1,153 @@
+package context
+
+import (
+	stdctx "context"
+	"strings"
+
+	"github.com/gabriel-vasile/mimetype"
+	"go.mau.fi/whatsmeow"
+	waE2E "go.mau.fi/whatsmeow/proto/waE2E"
+	"google.golang.org/protobuf/proto"
+)
+
+func (c *Ctx) UploadImage(bytes []byte, caption string) (*waE2E.ImageMessage, error) {
+	mime := mimetype.Detect(bytes)
+	resp, err := c.client.Upload(stdctx.Background(), bytes, whatsmeow.MediaImage)
+	if err != nil {
+		return nil, err
+	}
+	return &waE2E.ImageMessage{
+		Caption:       proto.String(caption),
+		Mimetype:      proto.String(mime.String()),
+		URL:           &resp.URL,
+		DirectPath:    &resp.DirectPath,
+		MediaKey:      resp.MediaKey,
+		FileEncSHA256: resp.FileEncSHA256,
+		FileSHA256:    resp.FileSHA256,
+		FileLength:    &resp.FileLength,
+	}, nil
+}
+
+func (c *Ctx) UploadVideo(bytes []byte, caption string) (*waE2E.VideoMessage, error) {
+	mime := mimetype.Detect(bytes)
+	resp, err := c.client.Upload(stdctx.Background(), bytes, whatsmeow.MediaVideo)
+	if err != nil {
+		return nil, err
+	}
+	return &waE2E.VideoMessage{
+		Caption:       proto.String(caption),
+		Mimetype:      proto.String(mime.String()),
+		URL:           &resp.URL,
+		DirectPath:    &resp.DirectPath,
+		MediaKey:      resp.MediaKey,
+		FileEncSHA256: resp.FileEncSHA256,
+		FileSHA256:    resp.FileSHA256,
+		FileLength:    &resp.FileLength,
+	}, nil
+}
+
+func (c *Ctx) UploadAudio(bytes []byte) (*waE2E.AudioMessage, error) {
+	mime := mimetype.Detect(bytes)
+	resp, err := c.client.Upload(stdctx.Background(), bytes, whatsmeow.MediaAudio)
+	if err != nil {
+		return nil, err
+	}
+	return &waE2E.AudioMessage{
+		Mimetype:      proto.String(mime.String()),
+		URL:           &resp.URL,
+		DirectPath:    &resp.DirectPath,
+		MediaKey:      resp.MediaKey,
+		FileEncSHA256: resp.FileEncSHA256,
+		FileSHA256:    resp.FileSHA256,
+		FileLength:    &resp.FileLength,
+	}, nil
+}
+
+func (c *Ctx) UploadDocument(bytes []byte, title, filename string) (*waE2E.DocumentMessage, error) {
+	mime := mimetype.Detect(bytes)
+	resp, err := c.client.Upload(stdctx.Background(), bytes, whatsmeow.MediaDocument)
+	if err != nil {
+		return nil, err
+	}
+	return &waE2E.DocumentMessage{
+		Title:         proto.String(title),
+		FileName:      proto.String(filename),
+		Mimetype:      proto.String(mime.String()),
+		URL:           &resp.URL,
+		DirectPath:    &resp.DirectPath,
+		MediaKey:      resp.MediaKey,
+		FileEncSHA256: resp.FileEncSHA256,
+		FileSHA256:    resp.FileSHA256,
+		FileLength:    &resp.FileLength,
+	}, nil
+}
+
+func (c *Ctx) UploadSticker(bytes []byte) (*waE2E.StickerMessage, error) {
+	resp, err := c.client.Upload(stdctx.Background(), bytes, whatsmeow.MediaImage)
+	if err != nil {
+		return nil, err
+	}
+	return &waE2E.StickerMessage{
+		Mimetype:      proto.String("image/webp"),
+		URL:           &resp.URL,
+		DirectPath:    &resp.DirectPath,
+		MediaKey:      resp.MediaKey,
+		FileEncSHA256: resp.FileEncSHA256,
+		FileSHA256:    resp.FileSHA256,
+		FileLength:    &resp.FileLength,
+	}, nil
+}
+
+func (c *Ctx) SendImage(bytes []byte, caption string) {
+	img, err := c.UploadImage(bytes, caption)
+	if err != nil {
+		c.Reply("Failed to upload image: " + err.Error())
+		return
+	}
+	c.SendMessage(&waE2E.Message{ImageMessage: img})
+}
+
+func (c *Ctx) SendVideo(bytes []byte, caption string) {
+	vid, err := c.UploadVideo(bytes, caption)
+	if err != nil {
+		c.Reply("Failed to upload video: " + err.Error())
+		return
+	}
+	c.SendMessage(&waE2E.Message{VideoMessage: vid})
+}
+
+func (c *Ctx) SendAudio(bytes []byte) {
+	aud, err := c.UploadAudio(bytes)
+	if err != nil {
+		c.Reply("Failed to upload audio: " + err.Error())
+		return
+	}
+	c.SendMessage(&waE2E.Message{AudioMessage: aud})
+}
+
+func (c *Ctx) SendDocument(bytes []byte, title, filename string) {
+	doc, err := c.UploadDocument(bytes, title, filename)
+	if err != nil {
+		c.Reply("Failed to upload document: " + err.Error())
+		return
+	}
+	c.SendMessage(&waE2E.Message{DocumentMessage: doc})
+}
+
+func (c *Ctx) SendSticker(bytes []byte) {
+	sticker, err := c.UploadSticker(bytes)
+	if err != nil {
+		c.Reply("Failed to upload sticker: " + err.Error())
+		return
+	}
+	c.SendMessage(&waE2E.Message{StickerMessage: sticker})
+}
+
+func matchExtension(ext string, list []string) bool {
+	for _, e := range list {
+		if strings.EqualFold(ext, e) {
+			return true
+		}
+	}
+	return false
+}