feat: add cmd_create

Cargo.toml

@@ -15,4 +15,5 @@ repository = "https://git.hatter.ink/hatter/cargotool"
 clap = "2.33.3"
 toml = "0.5.6"
 rust_util = "0.6.15"
+crates_io_api = "0.6"
 

src/cmd_crate.rs

@@ -0,0 +1,52 @@
+use std::time::Duration;
+use clap::{ArgMatches, SubCommand, App, Arg};
+use crates_io_api::{SyncClient, CrateResponse};
+use crate::cmd::{Command, CommandError};
+
+pub struct CommandImpl;
+
+impl Command for CommandImpl {
+
+    fn name(&self) -> &str { "crate" }
+
+    fn subcommand<'a>(&self) -> App<'a, 'a> {
+        SubCommand::with_name(self.name()).about("Crate subcommand")
+        .arg(Arg::with_name("add").short("A").long("add").multiple(true).takes_value(true).help("Add crates to project"))
+    }
+
+    fn run(&self, _arg_matches: &ArgMatches, sub_arg_matches: &ArgMatches) -> CommandError {
+        let crate_io_client = SyncClient::new(
+            "cargotool (https://hatter.me/)", Duration::from_millis(1000)
+        )?;
+
+        if let Some(add_crates) = sub_arg_matches.values_of("add") {
+            for c in add_crates {
+                find_create(&crate_io_client, c);
+            }
+        }
+
+        Ok(())
+    }
+}
+
+fn find_create(crate_io_client: &SyncClient, crate_name: &str) -> Option<CrateResponse> {
+    let c = match crate_io_client.get_crate(crate_name) {
+        Ok(c) => c, Err(e) => {
+            failure!("Create not found or network error: {}", e);
+            return None;
+        },
+    };
+    let crate_data = &c.crate_data;
+    if crate_data.id != crate_name {
+        failure!("Create not found: {}", crate_name);
+        return None;
+    }
+    if crate_data.downloads < 1000 {
+        failure!("Crate: {}, downloaded less then 1,000, is: {}, max version: {}", crate_name, crate_data.downloads, crate_data.max_version);
+    } else if crate_data.downloads < 10000 {
+        warning!("Crate: {}, downloaded less then 10,000, is: {}, max version: {}", crate_name, crate_data.downloads, crate_data.max_version);
+    } else {
+        success!("Crate: {}, downloaded more then 10,000, is: {}, max version: {}", crate_name, crate_data.downloads, crate_data.max_version);
+    }
+    Some(c)
+}

src/main.rs

@@ -2,6 +2,7 @@
 
 mod cmd;
 mod cmd_default;
+mod cmd_crate;
 mod cmd_test;
 
 use clap::App;
@@ -9,7 +10,8 @@ use cmd::{Command, CommandError};
 
 fn main() -> CommandError {
     let commands: Vec<Box<dyn Command>> = vec![
-        Box::new(cmd_test::CommandImpl)
+        Box::new(cmd_test::CommandImpl),
+        Box::new(cmd_crate::CommandImpl),
     ];
     let mut app = App::new(env!("CARGO_PKG_NAME"))
                     .version(env!("CARGO_PKG_VERSION"))