first pass on initial functionality

3 files changed, 151 insertions, 1 deletions

diff --git a/src/commands.rs b/src/commands.rs
new file mode 100644
index 0000000..e802bde
--- /dev/null
+++ b/src/commands.rs
@@ -0,0 +1,6 @@
+//use serenity::prelude::*;
+//use serenity::framework::StandardFramework;
+//
+//pub fn register_commands(mut f: StandardFramework) -> StandardFramework {
+//    f
+//}
diff --git a/src/main.rs b/src/main.rs
index e7a11a9..0f7b22b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,127 @@
+#[macro_use] extern crate serenity;
+#[macro_use] extern crate log;
+#[macro_use] extern crate error_chain;
+#[macro_use] extern crate dotenv_codegen;
+
+extern crate dotenv;
+extern crate simple_logger;
+extern crate typemap;
+extern crate url;
+
+mod commands;
+mod util;
+
+mod errors {
+    error_chain!();
+}
+
+use errors::*;
+
+pub use util::*;
+
+use std::env;
+use std::collections::HashSet;
+use std::thread;
+use std::time::{Duration, Instant};
+
+use serenity::prelude::*;
+use serenity::framework::StandardFramework;
+use serenity::framework::standard::help_commands;
+use serenity::model::gateway::Ready;
+
+use dotenv::dotenv;
+
+struct Handler;
+impl EventHandler for Handler {
+    fn ready(&self, _c: Context, r: Ready) {
+        r.guilds.iter().find(|g| {
+            g.id().0 == 0
+        }).or_else(|| {
+            info!("bot isn't in configured guild. let it join here: {}", OAUTH_URL);
+        });
+    }
+}
+
+fn run() -> Result<()> {
+    let token = &env::var("DISCORD_TOKEN")?;
+    let mut client = Client::new(token, Handler)?;
+    let framework = StandardFramework::new()
+        .configure(|c| c
+            .allow_dm(false)
+            .allow_whitespace(true)
+            .prefixes(vec!["!thulani ", "!thulan ", "!thulando madando ", "!thulando "])
+            .ignore_bots(true)
+            .on_mention(false)
+            .owners(HashSet::new())
+            .case_insensitivity(true)
+        )
+        .before(|_ctx, message, cmd| {
+            debug!("got command {} from user '{}' ({})", cmd, message.author.name, message.author.id);
+
+            true
+        })
+        .after(|_ctx, _msg, cmd, err| {
+            match err {
+                Ok(()) => {},
+                Err(e) => {
+
+
+                }
+            }
+        })
+        .bucket("std", 1, 10, 3)
+        .customised_help(help_commands::with_embeds, |c| {
+            c
+        });
+
+    client.with_framework(framework);
+    client.start()?;
+
+    Ok(())
+}
+
 fn main() {
-    println!("Hello, world!");
+    const BACKOFF_FACTOR: f64 = 2.0;
+    const MAX_BACKOFFS: usize = 3;
+    const BACKOFF_INIT: f64 = 100.0;
+
+    const MIN_RUN_DURATION: Duration = Duration::from_secs(120);
+
+    dotenv().ok();
+    simple_logger::init().unwrap();
+
+    let mut backoff_count: usize = 0;
+
+    loop {
+        let start = Instant::now();
+
+        info!("starting bot");
+        match run() {
+            Err(e) => {
+                error!("error encountered running client: {}", e);
+                e.iter().skip(1).for_each(|e| {
+
+                });
+
+            },
+            _ => {
+                warn!("somehow `run` completed without an error. should probably take a look at this.");
+            }
+        }
+
+        if Instant::now() - start >= MIN_RUN_DURATION {
+            backoff_count = 0;
+            continue;
+        }
+
+        backoff_count += 1;
+        if backoff_count >= 3 {
+            panic!("restarted bot too many times");
+        }
+
+        let backoff_millis = (BACKOFF_INIT*BACKOFF_FACTOR.powi(backoff_count as i32)) as u64;
+        info!("bot died too quickly. backing off, retrying in {}ms.", backoff_millis);
+
+        thread::sleep(Duration::from_millis(backoff_millis));
+    }
 }
diff --git a/src/util.rs b/src/util.rs
new file mode 100644
index 0000000..7903771
--- /dev/null
+++ b/src/util.rs
@@ -0,0 +1,20 @@
+use serenity::model::permissions::Permissions;
+use url::Url;
+
+const REQUIRED_PERMS: Permissions = Permissions::EMBED_LINKS |
+    Permissions::READ_MESSAGES |
+    Permissions::ADD_REACTIONS |
+    Permissions::SEND_MESSAGES |
+    Permissions::SEND_TTS_MESSAGES |
+    Permissions::MENTION_EVERYONE |
+    Permissions::USE_EXTERNAL_EMOJIS |
+    Permissions::CONNECT |
+    Permissions::SPEAK |
+    Permissions::CHANGE_NICKNAME |
+    Permissions::USE_VAD |
+    Permissions::ATTACH_FILES;
+
+pub const OAUTH_URL: Url = Url::parse(
+    concat!("https://discordapp.com/api/oauth2/authorize?scope=bot",
+    "&permissions=", stringify!(REQUIRED_PERMS.bits()),
+    "&client_id=", dotenv!("THULANI_CLIENT_ID"))).unwrap();