chatlog

Due to changes in YouTube’s private API, this package is no longer available.

YouTube Live archive chats fetcher. Premiered videos are also supported.

Installation

$ go get github.com/dqn/chatlog

Usage

package main
import (
  "fmt"
  "github.com/dqn/chatlog"
)
func main() {
  c := chatlog.New("VIDEO_ID")
  err := c.HandleChat(func(renderer ChatRenderer) error {
    switch r := renderer.(type) {
    // System message
    case *LiveChatViewerEngagementMessageRenderer:
      // Print formatted message.
      // e.g. "[Live chat replay is on. Messages that appeared when the stream was live will show up here.]"
      fmt.Println(renderer.ChatMessage())
      return nil
    // Chat message
    case *LiveChatTextMessageRenderer:
      fmt.Println(r.AuthorName.SimpleText)         // Author name
      fmt.Println(r.AuthorExternalChannelID)       // Channel ID
      fmt.Println(r.AuthorPhoto.Thumbnails[0].URL) // Icon URL
      // Print formatted message.
      // e.g. "Alice: hello!"
      fmt.Println(renderer.ChatMessage())
      return nil
    // Membership joining
    case *LiveChatMembershipItemRenderer:
      fmt.Println(r.AuthorName.SimpleText)         // Author name
      fmt.Println(r.AuthorExternalChannelID)       // Channel ID
      fmt.Println(r.AuthorPhoto.Thumbnails[0].URL) // Icon URL
      // Print formatted message.
      // e.g. "[Welcome to Membership!] Bob"
      fmt.Println(renderer.ChatMessage())
      return nil
    // Super Chat
    case *LiveChatPaidMessageRenderer:
      fmt.Println(r.AuthorName.SimpleText)         // Author name
      fmt.Println(r.AuthorExternalChannelID)       // Channel ID
      fmt.Println(r.AuthorPhoto.Thumbnails[0].URL) // Icon URL
      fmt.Println(r.PurchaseAmountText.SimpleText) // Super Chat Amount
      // Print formatted message.
      // e.g. "[$10.00] Carol: bye!"
      fmt.Println(renderer.ChatMessage())
      return nil
    }
  })
  if err != nil {
    // Handle error.
  }
}

Also can custom message.

// Example for LiveChatTextMessageRenderer.
r, _ := renderer.(*LiveChatTextMessageRenderer)
var buf bytes.Buffer
buf.WriteString(r.AuthorName.SimpleText + "> ")
for _, run := range r.Message.Runs {
  if run.Text != "" {
    buf.WriteString(run.Text)
  } else {
    buf.WriteString(run.Emoji.Image.Accessibility.AccessibilityData.Label)
  }
}
fmt.Println(buf.String())

Other

ChatRenderer is actual YouTube private API response structure. See payloads for more details.

License

MIT