⚠️ DEPRECATION NOTICE

Please, consider this small library as early proof of concept. I wrote it right after TDLib was released. There are more mature libraries currently, I personally can highly recommend this one from @zelenin. I use it in my private projects and can definitely say that it's battle-ready.

Golang bindings for TDLib (Telegram MTProto library)

In addition to the built-in methods:

• Destroy()
• Execute()
• Receive()
• Send()
• SetFilePath()
• SetLogVerbosityLevel()

It also has two interesting methods:

• Auth()
• SendAndCatch()

Linking statically against TDLib

I recommend you to link it statically if you don't want compile TDLib on production (don't forget that it requires at least 8GB of RAM).
To do that, just build your source with tag tdjson_static: go build -tags tdjson_static
For more details read this issue: https://github.com/tdlib/td/issues/8

Example

package main

import (
    "github.com/L11R/go-tdjson"
    "fmt"
    "log"
    "os"
    "os/signal"
    "syscall"
)

func main() {
    tdjson.SetLogVerbosityLevel(1)
    tdjson.SetFilePath("./errors.txt")

    var params []tdjson.Option = []tdjson.Option{
        tdjson.WithMessageDatabase(),
        tdjson.WithStorageOptimizer(),
    }

    // Get API_ID and API_HASH from env vars
    apiId := os.Getenv("API_ID")
    if apiId == "" {
        log.Fatal("API_ID env variable not specified")
    }
    params = append(params, tdjson.WithID(apiId))

    apiHash := os.Getenv("API_HASH")
    if apiHash == "" {
        log.Fatal("API_HASH env variable not specified")
    }
    params = append(params, tdjson.WithHash(apiHash))

    // Create new instance of client
    client := tdjson.NewClient(params...)

    // Handle Ctrl+C
    ch := make(chan os.Signal, 2)
    signal.Notify(ch, os.Interrupt, syscall.SIGTERM)
    go func() {
        <-ch
        client.Destroy()
        os.Exit(1)
    }()

    // Main loop
    for update := range client.Updates {
        // Show all updates
        fmt.Println(update)

        // Authorization block
        if update["@type"].(string) == "updateAuthorizationState" {
            if authorizationState, ok := update["authorization_state"].(tdjson.Update)["@type"].(string); ok {
                res, err := client.Auth(authorizationState)
                if err != nil {
                    log.Println(err)
                }
                log.Println(res)
            }
        }
    }
}