API: Sending attachments

[khoidt]

Hello,

What would be the right way to send file attachments from the API? Sorry if it's a duplicate question - unfortunately, I couldn't find any documentation or discussions on the topic.

I have a setup that bridges between Telegram, WhatsApp and an API endpoint (handled by a basic NodeJS script). The configuration allows sending and receiving text messages from any point, as well as images and attachments from the messengers. However, trying to add the very same attachment data to the Extra field and send it via the API crushes Matterbridge.

I'd be very grateful for any hints.

Message data:

{
"username": "bot",
"gateway": "gateway1",
"Extra":{"file":[{"Name":"test.txt","Data":"dGVzdCB0ZXN0IHRlc3Q=","Comment":"","URL":"","Size":0,"Avatar":false,"SHA":""}]
}

Error log:

[0017] DEBUG api:          [handlePostMessage:bridge/api/api.go:140] Sending message from bot on api to gateway
[0017] DEBUG gateway:      [SendMessage:gateway/gateway.go:479] => Sending config.Message{Text:"", Channel:"api", Username:"bot", UserID:"", Avatar:"", Account:"api.myapi", Event:"", Protocol:"api", Gateway:"gateway1", ParentID:"", Timestamp:time.Time{wall:0xc05610e9f60d97d4, ext:17630584101, loc:(*time.Location)(0x366c2a0)}, ID:"", Extra:map[string][]interface {}{"file":[]interface {}{map[string]interface {}{"Avatar":false, "Comment":"", "Data":"dGVzdCB0ZXN0IHRlc3Q=", "Name":"test.txt", "SHA":"", "Size":0, "URL":""}}}} from api.myapi (api) to telegram.mytelegram (218188638)
[0017] DEBUG telegram:     [Send:bridge/telegram/telegram.go:95] => Receiving config.Message{Text:"", Channel:"218188638", Username:"(api bot) ", UserID:"", Avatar:"", Account:"api.myapi", Event:"", Protocol:"api", Gateway:"gateway1", ParentID:"", Timestamp:time.Time{wall:0xc05610e9f60d97d4, ext:17630584101, loc:(*time.Location)(0x366c2a0)}, ID:"", Extra:map[string][]interface {}{"file":[]interface {}{map[string]interface {}{"Avatar":false, "Comment":"", "Data":"dGVzdCB0ZXN0IHRlc3Q=", "Name":"test.txt", "SHA":"", "Size":0, "URL":""}}}}
[0017] DEBUG gateway:      [func1:gateway/gateway.go:488] => Send from api.myapi (api) to telegram.mytelegram (218188638) took 4.3636ms
panic: interface conversion: interface {} is map[string]interface {}, not config.FileInfo

goroutine 45 [running]:
github.com/42wim/matterbridge/bridge/telegram.(*Btelegram).handleUploadFile(0xc00066a078, 0xc0009c96b8, 0xd014b5e, 0x4, 0xc0006c8608)
        /go/src/github.com/42wim/matterbridge/bridge/telegram/handlers.go:389 +0xd05
github.com/42wim/matterbridge/bridge/telegram.(*Btelegram).Send(0xc00066a078, 0x0, 0x0, 0xc000364a10, 0x9, 0xc0001f1fa0, 0xa, 0x0, 0x0, 0x0, ...)
        /go/src/github.com/42wim/matterbridge/bridge/telegram/telegram.go:126 +0x4d9
github.com/42wim/matterbridge/gateway.(*Gateway).SendMessage(0xc00006e300, 0xc00020d520, 0xc00067e680, 0xc000178380, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
        /go/src/github.com/42wim/matterbridge/gateway/gateway.go:491 +0x8d5
github.com/42wim/matterbridge/gateway.(*Gateway).handleMessage(0xc00006e300, 0xc00020d520, 0xc00067e680, 0x0, 0x0, 0x0)
        /go/src/github.com/42wim/matterbridge/gateway/handlers.go:226 +0x26c
github.com/42wim/matterbridge/gateway.(*Router).handleReceive(0xc0000700a0)
        /go/src/github.com/42wim/matterbridge/gateway/router.go:152 +0x251
created by github.com/42wim/matterbridge/gateway.(*Router).Start
        /go/src/github.com/42wim/matterbridge/gateway/router.go:102 +0x92a

[UnkwUsr]

This is now fixed on master branch. #2182