Implement SendMediaGroup request

src/core/requests/form_builder.rs

@@ -3,6 +3,7 @@ use serde::Serialize;
 use crate::core::types::ParseMode;
 use crate::core::requests::ChatId;
 use crate::core::requests::utils;
+use crate::core::types::InputMedia;
 use std::path::PathBuf;
 
 /// This is a convenient struct that builds `reqwest::r#async::multipart::Form`
@@ -55,7 +56,7 @@ pub trait ToFormValue {
 }
 
 macro_rules! impl_for_struct {
-    ($($name:ident),*) => {
+    ($($name:ty),*) => {
         $(
             impl ToFormValue for $name {
                 fn to_form_value(&self) -> String {
@@ -67,7 +68,7 @@ macro_rules! impl_for_struct {
 }
 
 impl_for_struct!(
-    bool, i32, i64
+    bool, i32, i64, Vec<InputMedia>
 );
 
 impl ToFormValue for str {

src/core/requests/mod.rs

@@ -89,4 +89,5 @@ pub mod get_me;
 pub mod send_message;
 pub mod forward_message;
 pub mod send_photo;
+pub mod send_media_group;
 mod utils;

src/core/requests/send_media_group.rs

@@ -1,46 +1,95 @@
 use crate::core::{
-    types::{
-        Message, InputMedia,
-    },
-    network::{
-        request, ResponseResult,
-    },
+    types::{Message, InputMedia, InputFile},
+    network::request_multipart,
     requests::{
         form_builder::FormBuilder,
         ChatId,
         Request,
-        RequestInfo,
+        RequestContext,
         RequestFuture,
+        ResponseResult,
     }
 };
+use apply::Apply;
 
 /// Use this method to send a group of photos or videos as an album.
-#[derive(Debug, TypedBuilder)]
-pub struct SendMediaGroup {
-    info: RequestInfo,
+#[derive(Debug, Clone)]
+pub struct SendMediaGroup<'a> {
+    ctx: RequestContext<'a>,
 
-    chat_id: ChatId,
-    media: Vec<InputMedia>,
+    pub chat_id: ChatId,
+    pub media: Vec<InputMedia>,
 
-    #[builder(default)]
-    disable_notification: Option<bool>,
-    #[builder(default)]
-    reply_to_message_id: Option<i64>,
+    pub disable_notification: Option<bool>,
+    pub reply_to_message_id: Option<i64>,
 }
 
-impl Request for SendMediaGroup {
+impl<'a> Request<'a> for SendMediaGroup<'a> {
     type ReturnValue = Vec<Message>;
 
-
-    fn send(self) -> RequestFuture<ResponseResult<Self::ReturnValue>> {
+    fn send(self) -> RequestFuture<'a, ResponseResult<Self::ReturnValue>> {
         Box::pin(async move {
             let params = FormBuilder::new()
                 .add("chat_id", &self.chat_id)
+                .apply(|form| {
+                    self.media
+                        .iter()
+                        .map(|e| e.media())
+                        .fold(form, |acc, file| {
+                            if let InputFile::File(path) = file {
+                                acc.add_file(
+                                &path
+                                    .file_name()
+                                    .unwrap()
+                                    .to_string_lossy(),
+                            path
+                                )
+                            } else {
+                                acc
+                            }
+                    })
+                })
                 .add("media", &self.media)
                 .add_if_some("disable_notification", self.disable_notification.as_ref())
                 .add_if_some("reply_to_message_id", self.reply_to_message_id.as_ref())
                 .build();
-            request(&self.info.client, &self.info.token, "sendMediaGroup", Some(params)).await
+            request_multipart(&self.ctx.client, &self.ctx.token, "sendMediaGroup", Some(params)).await
         })
     }
 }
+
+impl<'a> SendMediaGroup<'a> {
+    pub(crate) fn new(
+        ctx: RequestContext<'a>,
+        chat_id: ChatId,
+        media: Vec<InputMedia>,
+    ) -> Self {
+        SendMediaGroup {
+            ctx,
+            chat_id,
+            media,
+            disable_notification: None,
+            reply_to_message_id: None,
+        }
+    }
+
+    pub fn chat_id<T: Into<ChatId>>(mut self, val: T) -> Self {
+        self.chat_id = val.into();
+        self
+    }
+
+    pub fn media<T: Into<Vec<InputMedia>>>(mut self, val: T) -> Self {
+        self.media = val.into();
+        self
+    }
+
+    pub fn disable_notification<T: Into<bool>>(mut self, val: T) -> Self {
+        self.disable_notification = Some(val.into());
+        self
+    }
+
+    pub fn reply_to_message_id<T: Into<i64>>(mut self, val: T) -> Self {
+        self.reply_to_message_id = Some(val.into());
+        self
+    }
+}

src/core/types/input_media.rs

@@ -165,6 +165,18 @@ pub enum InputMedia {
     },
 }
 
+impl InputMedia {
+    pub fn media(&self) -> &InputFile {
+        match self {
+            InputMedia::Photo { media, .. } |
+            InputMedia::Document { media, .. } |
+            InputMedia::Audio { media, .. } |
+            InputMedia::Animation { media, .. } |
+            InputMedia::Video { media, .. } => media,
+        }
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;