Send Chat Message

//native

export type DynSelect_chat_id = string

// Dropdown of the connected user's chats, labelled by topic or member names.

export async function chat_id(auth: RT.MsTeams) {

  const response = await fetch(

    `https://graph.microsoft.com/v1.0/me/chats?$expand=members&$top=50`,

    {

      headers: {

        Authorization: `Bearer ${auth.token}`,

        Accept: "application/json",

      },

    }

  )

  if (!response.ok) {

    throw new Error(`${response.status} ${await response.text()}`)

  }

  const { value } = (await response.json()) as { value: any[] }

  return value.map((x) => ({

    value: x.id,

    label:

      x.topic ||

      (x.members ?? [])

        .map((m: any) => m.displayName)

        .filter(Boolean)

        .join(", ") ||

      x.chatType,

  }))

}

/**

 * Send Chat Message

 * Send a message to a one-on-one, group or meeting chat as the connected user, as plain text or HTML. Requires ChatMessage.Send (covered by the default Chat.ReadWrite).

 */

export async function main(

  auth: RT.MsTeams,

  chat_id: DynSelect_chat_id,

  message: string,

  content_type: "text" | "html" = "text"

) {

  const payload: { [key: string]: any } = {

    body: { contentType: content_type, content: message },

  }

  const response = await fetch(

    `https://graph.microsoft.com/v1.0/chats/${encodeURIComponent(chat_id)}/messages`,

    {

      method: "POST",

      headers: {

        Authorization: `Bearer ${auth.token}`,

        "Content-Type": "application/json",

        Accept: "application/json",

      },

      body: JSON.stringify(payload),

    }

  )

  if (!response.ok) {

    throw new Error(`${response.status} ${await response.text()}`)

  }

  return await response.json()

}