From 947be538a7c0d529b1d90375bfb1cace35997770 Mon Sep 17 00:00:00 2001
From: chapoline <me@chapoline.me>
Date: Thu, 5 May 2022 14:31:00 +0000
Subject: [PATCH] initial commit

---
 .gitignore      |   1 +
 Cargo.lock      | 636 ++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml      |  10 +
 src/commands.rs |  81 ++++++
 src/main.rs     |  61 +++++
 src/utils.rs    |  96 ++++++++
 6 files changed, 885 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 src/commands.rs
 create mode 100644 src/main.rs
 create mode 100644 src/utils.rs

diff --git a/.gitignore b/.gitignore
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index 0000000..ea8c4bf
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diff --git a/Cargo.lock b/Cargo.lock
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+version = "0.2.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d554b7f530dee5964d9a9468d95c1f8b8acae4f282807e7d27d4b03099a46744"
+
+[[package]]
+name = "web-sys"
+version = "0.3.57"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b17e741662c70c8bd24ac5c5b18de314a2c26c32bf8346ee1e6f53de919c283"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "webpki"
+version = "0.22.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f095d78192e208183081cc07bc5515ef55216397af48b873e5edcd72637fa1bd"
+dependencies = [
+ "ring",
+ "untrusted",
+]
+
+[[package]]
+name = "webpki-roots"
+version = "0.22.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44d8de8415c823c8abd270ad483c6feeac771fad964890779f9a8cb24fbbc1bf"
+dependencies = [
+ "webpki",
+]
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..c2f35f3
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "telegram_bots"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+frankenstein = "0.13"
+rand = { version = "0.8.5", features = ["small_rng"] }
\ No newline at end of file
diff --git a/src/commands.rs b/src/commands.rs
new file mode 100644
index 0000000..d6d3af4
--- /dev/null
+++ b/src/commands.rs
@@ -0,0 +1,81 @@
+use frankenstein::{
+    Message,
+    MessageEntityType
+};
+use super::utils;
+use rand::prelude::*;
+
+#[derive(Hash, Eq, PartialEq, Clone)]
+pub enum Command {
+    Ping,
+    Marco,
+    Dice,
+    Cookie
+}
+
+pub static COMMAND_LIST: [Command; 4] = [
+    Command::Ping,
+    Command::Marco,
+    Command::Dice,
+    Command::Cookie
+];
+
+pub fn get_command_attrs<'a>(cmd: &Command) -> utils::CommandAttrs<'a> {
+    match cmd {
+        Command::Ping => {
+            utils::CommandAttrs {
+                name: "ping",
+                description: "ping", 
+                handler: ping as fn(&utils::Context, Message)
+            }
+        },
+        Command::Marco => {
+            utils::CommandAttrs {
+                name: "marco",
+                description: "marco?", 
+                handler: marco as fn(&utils::Context, Message)
+            }
+        },
+        Command::Dice => {
+            utils::CommandAttrs {
+                name: "dice",
+                description: "Roll a dice!",
+                handler: dice as fn(&utils::Context, Message)
+            }
+        }
+        Command::Cookie => {
+            utils::CommandAttrs {
+                name: "cookie",
+                description: "Get a cookie!",
+                handler: cookie as fn(&utils::Context, Message)
+            }
+        }
+    }
+}
+
+fn ping(ctx: &utils::Context, message: Message) {
+    utils::send_message(ctx, message.chat.id, "pong!", Some(message.message_id));
+}
+
+fn marco(ctx: &utils::Context, message: Message) {
+    utils::send_message(ctx, message.chat.id, "Polo!", Some(message.message_id));
+}
+
+fn dice(ctx: &utils::Context, message: Message) {
+    let mut rng = thread_rng();
+    let mut payload = 6;
+
+    for e in message.entities.unwrap() {
+        if e.type_field == MessageEntityType::BotCommand {
+            payload = (message.text.as_ref().unwrap())[usize::from(e.offset+e.length)..].trim().parse().unwrap_or(6);
+            break
+        }
+    }
+
+    let number: i16 = rng.gen_range(1..payload + 1);
+    utils::send_message(ctx, message.chat.id, &format!("Roll a d{}! You got a {}", payload, number), Some(message.message_id));
+}
+
+fn cookie(ctx: &utils::Context, message: Message) {
+    utils::send_message(ctx, message.chat.id, "Here, take a cookie 🍪", Some(message.message_id));
+}
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..5fde68f
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,61 @@
+use frankenstein::{
+    Api,
+    TelegramApi,
+    GetUpdatesParams,
+};
+
+mod commands;
+mod utils;
+
+
+static TOKEN: &str = "";
+
+fn main() {
+    let api: Api = Api::new(TOKEN);
+    match api.get_me() {
+        Ok(response) => {
+            let user = response.result;
+            let username = user.username.expect("The bot must have a username.");
+
+            let ctx = utils::Context {
+                api: api,
+                username: username,
+                user_id: user.id
+            };
+
+            println!(
+                "Hello, I'm @{}, https://t.me/{}",
+                user.first_name,
+                ctx.username
+            );
+
+            utils::init_command_list(&ctx);
+
+            let update_params_builder = GetUpdatesParams::builder().allowed_updates(vec!["message".to_string()]);
+            let mut update_params = update_params_builder.clone().build();
+
+            loop {
+                let result = ctx.api.get_updates(&update_params);
+                println!("result: {:?}", result);
+
+                match result {
+                    Ok (response) => {
+                        for update in response.result {
+                            if let Some(message) = update.message {
+                                utils::exec_command(&ctx, message);
+                            }
+                            update_params = update_params_builder.clone().offset(update.update_id + 1).build();
+                        }
+                    }
+
+                    Err(error) => {
+                        println!("Failed to get updates: {:?}", error);
+                    }
+                }
+            }
+        }
+        Err(error) => {
+            eprintln!("Failed to get me: {:?}", error);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/utils.rs b/src/utils.rs
new file mode 100644
index 0000000..47d35f2
--- /dev/null
+++ b/src/utils.rs
@@ -0,0 +1,96 @@
+use frankenstein::{
+    Api,
+    TelegramApi,
+    SendMessageParams,
+    SetMyCommandsParams,
+    BotCommand,
+    MessageEntityType,
+    Message
+};
+use super::commands;
+
+pub struct Context {
+    pub api: Api,
+    pub username: String,
+    pub user_id: u64
+}
+
+pub struct CommandAttrs<'a> {
+    pub name: &'a str,
+    pub description: &'a str,
+    pub handler: fn(&Context, Message)
+}
+
+pub fn send_message(ctx: &Context, chat_id: i64, text: &str, message_id_to_repy: Option<i32>) {
+    let send_message_params: SendMessageParams;
+    
+    if let Some(id) = message_id_to_repy {
+        send_message_params = SendMessageParams::builder()
+            .chat_id(chat_id)
+            .text(text)
+            .reply_to_message_id(id)
+            .build();
+    } else {
+        send_message_params = SendMessageParams::builder()
+            .chat_id(chat_id)
+            .text(text)
+            .build();
+    }
+
+    if let Err(err) = ctx.api.send_message(&send_message_params) {
+        println!("Failed to send message: {:?}", err);
+    }
+}
+
+pub fn init_command_list(ctx: &Context) {
+    let mut commands = vec![];
+    for cmd in &commands::COMMAND_LIST {
+        commands.push(BotCommand::builder()
+            .command(commands::get_command_attrs(&cmd).name)
+            .description(commands::get_command_attrs(&cmd).description)
+            .build())           
+    } 
+    let update_commands = SetMyCommandsParams::builder()
+        .commands(commands)
+        .build();
+
+    ctx.api.set_my_commands(&update_commands).unwrap();
+}
+
+pub fn exec_command(ctx: &Context, message: Message) {
+    let mut cmd: Option<commands::Command> = None;
+    match &message.reply_to_message {
+        Some (r_message) => {
+            if r_message.from.as_ref().unwrap().id == ctx.user_id {
+                cmd = Some(commands::Command::Ping);  
+            } else {
+                cmd = None;
+            }
+        }
+        None => {
+            if let Some(entitites) = &message.entities {
+                let text = message.text.as_ref().unwrap();
+                for e in entitites {
+                    if e.type_field == MessageEntityType::BotCommand {
+                        let command = &(text)[usize::from(e.offset)..usize::from(e.offset+e.length)];
+                        
+                        for c in &commands::COMMAND_LIST {
+                            if "/".to_string() + commands::get_command_attrs(c).name == command.split("@").collect::<Vec<&str>>()[0] {
+                                cmd = Some(c.clone());
+                                break
+                            }
+                        }
+
+                        if cmd == None {
+                            eprintln!("Unknown command: {:?}", e);
+                        }
+                    }
+                    break;
+                }
+            }
+        }
+    };
+    if let Some(c) = cmd {
+        (commands::get_command_attrs(&c).handler)(ctx, message);
+    }
+}
\ No newline at end of file