improve logging, replace log-level by RUST_LOG

CHANGELOG.md

@@ -7,6 +7,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- Replace `log-level` arg by default `RUST_LOG` env var [#130]
+
+### Fixed
+
+- IDLE mode after network interruption [#123]
+- Output redirected to `stderr` [#130]
+- Refactor table system [#132]
+- Editon file format on Linux [#133]
+- Show email address when name not available [#131]
+
 ## [0.2.7] - 2021-04-24
 
 ### Added
@@ -24,11 +36,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Improve config compatibility on Windows [#111](https://github.com/soywod/himalaya/pull/111)
 - Vim table containing emoji [#122]
-- IDLE mode after network interruption [#123]
-- Output redirected to `stderr` [#130]
-- Refactor table system [#132]
-- Editon file format on Linux [#133]
-- Show email address when name not available [#131]
 
 ## [0.2.6] - 2021-04-17
 

Cargo.lock

@@ -24,6 +24,15 @@ dependencies = [
  "memchr 2.3.4",
 ]
 
+[[package]]
+name = "ansi_term"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "arrayvec"
 version = "0.5.2"
@@ -165,6 +174,8 @@ version = "2.33.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37e58ac78573c40708d45522f0d80fa2f01cc4f9b4e2bf749807255454312002"
 dependencies = [
+ "ansi_term",
+ "atty",
  "bitflags",
  "strsim",
  "textwrap",

Cargo.toml

@@ -7,7 +7,7 @@ edition = "2018"
 
 [dependencies]
 chrono = "0.4.19"
-clap = {version = "2.33.3", default-features = false, features = ["suggestions"]}
+clap = {version = "2.33.3", default-features = false, features = ["suggestions", "color"]}
 env_logger = "0.8.3"
 error-chain = "0.12.4"
 imap = "2.4.0"

src/app.rs

@@ -0,0 +1,32 @@
+use clap;
+
+use crate::{
+    config::model::{Account, Config},
+    output::model::Output,
+};
+
+pub struct App<'a> {
+    pub config: &'a Config,
+    pub account: &'a Account,
+    pub output: &'a Output,
+    pub mbox: &'a str,
+    pub arg_matches: &'a clap::ArgMatches<'a>,
+}
+
+impl<'a> App<'a> {
+    pub fn new(
+        config: &'a Config,
+        account: &'a Account,
+        output: &'a Output,
+        mbox: &'a str,
+        arg_matches: &'a clap::ArgMatches<'a>,
+    ) -> Self {
+        Self {
+            config,
+            account,
+            output,
+            mbox,
+            arg_matches,
+        }
+    }
+}

src/comp/cli.rs

@@ -13,7 +13,7 @@ pub fn comp_subcmds<'s>() -> Vec<App<'s, 's>> {
             .required(true)])]
 }
 
-pub fn comp_matches(mut app: App, matches: &ArgMatches) -> Result<bool> {
+pub fn comp_matches<'a>(app: fn() -> App<'a, 'a>, matches: &ArgMatches) -> Result<bool> {
     if let Some(matches) = matches.subcommand_matches("completion") {
         debug!("completion command matched");
         let shell = match matches.value_of("shell").unwrap() {
@@ -22,7 +22,7 @@ pub fn comp_matches(mut app: App, matches: &ArgMatches) -> Result<bool> {
             "bash" | _ => Shell::Bash,
         };
         debug!("shell: {}", shell);
-        app.gen_completions_to("himalaya", shell, &mut io::stdout());
+        app().gen_completions_to("himalaya", shell, &mut io::stdout());
         return Ok(true);
     };
 

src/flag/cli.rs

@@ -1,44 +1,43 @@
-use clap::{App, Arg, ArgMatches, SubCommand};
+use clap;
 use error_chain::error_chain;
 use log::debug;
 
-use crate::{config::model::Account, imap::model::ImapConnector, msg::cli::uid_arg};
+use crate::{app::App, imap::model::ImapConnector, msg::cli::uid_arg};
 
 error_chain! {
     links {
-        Config(crate::config::model::Error, crate::config::model::ErrorKind);
         Imap(crate::imap::model::Error, crate::imap::model::ErrorKind);
     }
 }
 
-fn flags_arg<'a>() -> Arg<'a, 'a> {
+fn flags_arg<'a>() -> clap::Arg<'a, 'a> {
-    Arg::with_name("flags")
+    clap::Arg::with_name("flags")
         .help("IMAP flags (see https://tools.ietf.org/html/rfc3501#page-11)")
         .value_name("FLAGS…")
         .multiple(true)
         .required(true)
 }
 
-pub fn flag_subcmds<'s>() -> Vec<App<'s, 's>> {
+pub fn flag_subcmds<'a>() -> Vec<clap::App<'a, 'a>> {
-    vec![SubCommand::with_name("flags")
+    vec![clap::SubCommand::with_name("flags")
         .aliases(&["flag"])
         .about("Handles flags")
         .subcommand(
-            SubCommand::with_name("set")
+            clap::SubCommand::with_name("set")
                 .aliases(&["s"])
                 .about("Replaces all message flags")
                 .arg(uid_arg())
                 .arg(flags_arg()),
         )
         .subcommand(
-            SubCommand::with_name("add")
+            clap::SubCommand::with_name("add")
                 .aliases(&["a"])
                 .about("Appends flags to a message")
                 .arg(uid_arg())
                 .arg(flags_arg()),
         )
         .subcommand(
-            SubCommand::with_name("remove")
+            clap::SubCommand::with_name("remove")
                 .aliases(&["rm", "r"])
                 .about("Removes flags from a message")
                 .arg(uid_arg())
@@ -46,8 +45,8 @@ pub fn flag_subcmds<'s>() -> Vec<App<'s, 's>> {
         )]
 }
 
-pub fn flag_matches(account: &Account, mbox: &str, matches: &ArgMatches) -> Result<bool> {
+pub fn flag_matches(app: &App) -> Result<bool> {
-    if let Some(matches) = matches.subcommand_matches("set") {
+    if let Some(matches) = app.arg_matches.subcommand_matches("set") {
         debug!("set command matched");
 
         let uid = matches.value_of("uid").unwrap();
@@ -56,14 +55,14 @@ pub fn flag_matches(account: &Account, mbox: &str, matches: &ArgMatches) -> Resu
         let flags = matches.value_of("flags").unwrap();
         debug!("flags: {}", flags);
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
-        imap_conn.set_flags(mbox, uid, flags)?;
+        imap_conn.set_flags(app.mbox, uid, flags)?;
 
         imap_conn.logout();
         return Ok(true);
     }
 
-    if let Some(matches) = matches.subcommand_matches("add") {
+    if let Some(matches) = app.arg_matches.subcommand_matches("add") {
         debug!("add command matched");
 
         let uid = matches.value_of("uid").unwrap();
@@ -72,14 +71,14 @@ pub fn flag_matches(account: &Account, mbox: &str, matches: &ArgMatches) -> Resu
         let flags = matches.value_of("flags").unwrap();
         debug!("flags: {}", flags);
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
-        imap_conn.add_flags(mbox, uid, flags)?;
+        imap_conn.add_flags(app.mbox, uid, flags)?;
 
         imap_conn.logout();
         return Ok(true);
     }
 
-    if let Some(matches) = matches.subcommand_matches("remove") {
+    if let Some(matches) = app.arg_matches.subcommand_matches("remove") {
         debug!("remove command matched");
 
         let uid = matches.value_of("uid").unwrap();
@@ -88,8 +87,8 @@ pub fn flag_matches(account: &Account, mbox: &str, matches: &ArgMatches) -> Resu
         let flags = matches.value_of("flags").unwrap();
         debug!("flags: {}", flags);
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
-        imap_conn.remove_flags(mbox, uid, flags)?;
+        imap_conn.remove_flags(app.mbox, uid, flags)?;
 
         imap_conn.logout();
         return Ok(true);

src/imap/cli.rs

@@ -1,11 +1,8 @@
-use clap::{self, App, ArgMatches, SubCommand};
+use clap;
 use error_chain::error_chain;
 use log::debug;
 
-use crate::{
+use crate::{app::App, imap::model::ImapConnector};
-    config::model::{Account, Config},
-    imap::model::ImapConnector,
-};
 
 error_chain! {
     links {
@@ -14,20 +11,17 @@ error_chain! {
     }
 }
 
-pub fn imap_subcmds<'s>() -> Vec<App<'s, 's>> {
+pub fn imap_subcmds<'a>() -> Vec<clap::App<'a, 'a>> {
-    vec![SubCommand::with_name("idle").about("Spawns a blocking idle daemon")]
+    vec![clap::SubCommand::with_name("idle").about("Spawns a blocking idle daemon")]
 }
 
-pub fn imap_matches(
+pub fn imap_matches(app: &App) -> Result<bool> {
-    config: &Config,
+    if let Some(_) = app.arg_matches.subcommand_matches("idle") {
-    account: &Account,
-    mbox: &str,
-    matches: &ArgMatches,
-) -> Result<bool> {
-    if let Some(_) = matches.subcommand_matches("idle") {
         debug!("idle command matched");
-        let mut imap_conn = ImapConnector::new(&account)?;
+
-        imap_conn.idle(&config, &mbox)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
+        imap_conn.idle(&app.config, &app.mbox)?;
+
         imap_conn.logout();
         return Ok(true);
     }

src/main.rs

@@ -1,8 +1,10 @@
 use clap;
+use env_logger;
 use error_chain::error_chain;
 use log::{debug, error, trace};
 use std::{env, path::PathBuf, process::exit};
 
+mod app;
 mod comp;
 mod config;
 mod flag;
@@ -15,17 +17,14 @@ mod smtp;
 mod table;
 
 use crate::{
+    app::App,
     comp::cli::{comp_matches, comp_subcmds},
     config::{cli::config_args, model::Config},
     flag::cli::{flag_matches, flag_subcmds},
     imap::cli::{imap_matches, imap_subcmds},
     mbox::cli::{mbox_matches, mbox_source_arg, mbox_subcmds},
     msg::cli::{msg_matches, msg_subcmds},
-    output::{
+    output::{cli::output_args, model::Output},
-        cli::output_args,
-        fmt::OutputFmt,
-        log::{init as init_logger, LogLevel},
-    },
 };
 
 error_chain! {
@@ -36,11 +35,10 @@ error_chain! {
         ImapCli(crate::imap::cli::Error, crate::imap::cli::ErrorKind);
         MboxCli(crate::mbox::cli::Error, crate::mbox::cli::ErrorKind);
         MsgCli(crate::msg::cli::Error, crate::msg::cli::ErrorKind);
-        OutputLog(crate::output::log::Error, crate::output::log::ErrorKind);
     }
 }
 
-fn build_app<'a>() -> clap::App<'a, 'a> {
+fn parse_args<'a>() -> clap::App<'a, 'a> {
     clap::App::new(env!("CARGO_PKG_NAME"))
         .version(env!("CARGO_PKG_VERSION"))
         .about(env!("CARGO_PKG_DESCRIPTION"))
@@ -56,38 +54,39 @@ fn build_app<'a>() -> clap::App<'a, 'a> {
 }
 
 fn run() -> Result<()> {
-    let app = build_app();
+    env_logger::init_from_env(
-    let matches = app.get_matches();
+        env_logger::Env::default().filter_or(env_logger::DEFAULT_FILTER_ENV, "off"),
+    );
 
-    let output_fmt: OutputFmt = matches.value_of("output").unwrap().into();
+    let args = parse_args();
-    let log_level: LogLevel = matches.value_of("log-level").unwrap().into();
+    let arg_matches = args.get_matches();
-    init_logger(output_fmt, log_level)?;
 
-    // Check completion matches before the config init
+    // Check completion before init config
-    if comp_matches(build_app(), &matches)? {
+    if comp_matches(parse_args, &arg_matches)? {
         return Ok(());
     }
 
-    let custom_config: Option<PathBuf> = matches.value_of("config").map(|s| s.into());
+    let output = Output::new(arg_matches.value_of("output").unwrap());
-    debug!("custom config path: {:?}", custom_config);
+    debug!("output: {:?}", output);
 
     debug!("init config");
+    let custom_config: Option<PathBuf> = arg_matches.value_of("config").map(|s| s.into());
+    debug!("custom config path: {:?}", custom_config);
     let config = Config::new(custom_config)?;
     trace!("config: {:?}", config);
 
-    let account_name = matches.value_of("account");
+    let account_name = arg_matches.value_of("account");
     debug!("init account: {}", account_name.unwrap_or("default"));
     let account = config.find_account_by_name(account_name)?;
     trace!("account: {:?}", account);
 
-    let mbox = matches.value_of("mailbox").unwrap();
+    let mbox = arg_matches.value_of("mailbox").unwrap();
     debug!("mailbox: {}", mbox);
 
     debug!("begin matching");
-    let _matched = mbox_matches(&account, &matches)?
+    let app = App::new(&config, &account, &output, &mbox, &arg_matches);
-        || flag_matches(&account, &mbox, &matches)?
+    let _matched =
-        || imap_matches(&config, &account, &mbox, &matches)?
+        mbox_matches(&app)? || flag_matches(&app)? || imap_matches(&app)? || msg_matches(&app)?;
-        || msg_matches(&config, &account, &mbox, &matches)?;
 
     Ok(())
 }
@@ -95,13 +94,20 @@ fn run() -> Result<()> {
 fn main() {
     if let Err(ref errs) = run() {
         let mut errs = errs.iter();
+
         match errs.next() {
             None => (),
             Some(err) => {
                 error!("{}", err);
-                errs.for_each(|err| error!(" ↳ {}", err));
+                eprintln!("{}", err);
+
+                errs.for_each(|err| {
+                    error!("{}", err);
+                    eprintln!(" ↳ {}", err);
+                });
             }
         }
+
         exit(1);
     } else {
         exit(0);

src/mbox/cli.rs

@@ -1,20 +1,17 @@
-use clap::{self, App, Arg, ArgMatches, SubCommand};
+use clap;
 use error_chain::error_chain;
-use log::{debug, info, trace};
+use log::{debug, trace};
 
-use crate::{config::model::Account, imap::model::ImapConnector};
+use crate::{app::App, imap::model::ImapConnector};
 
 error_chain! {
     links {
-        Config(crate::config::model::Error, crate::config::model::ErrorKind);
         Imap(crate::imap::model::Error, crate::imap::model::ErrorKind);
-        MsgCli(crate::msg::cli::Error, crate::msg::cli::ErrorKind);
-        OutputUtils(crate::output::utils::Error, crate::output::utils::ErrorKind);
     }
 }
 
-pub fn mbox_source_arg<'a>() -> Arg<'a, 'a> {
+pub fn mbox_source_arg<'a>() -> clap::Arg<'a, 'a> {
-    Arg::with_name("mailbox")
+    clap::Arg::with_name("mailbox")
         .short("m")
         .long("mailbox")
         .help("Selects a specific mailbox")
@@ -22,26 +19,27 @@ pub fn mbox_source_arg<'a>() -> Arg<'a, 'a> {
         .default_value("INBOX")
 }
 
-pub fn mbox_target_arg<'a>() -> Arg<'a, 'a> {
+pub fn mbox_target_arg<'a>() -> clap::Arg<'a, 'a> {
-    Arg::with_name("target")
+    clap::Arg::with_name("target")
         .help("Specifies the targetted mailbox")
         .value_name("TARGET")
 }
 
-pub fn mbox_subcmds<'s>() -> Vec<App<'s, 's>> {
+pub fn mbox_subcmds<'a>() -> Vec<clap::App<'a, 'a>> {
-    vec![SubCommand::with_name("mailboxes")
+    vec![clap::SubCommand::with_name("mailboxes")
         .aliases(&["mailbox", "mboxes", "mbox", "m"])
         .about("Lists all mailboxes")]
 }
 
-pub fn mbox_matches(account: &Account, matches: &ArgMatches) -> Result<bool> {
+pub fn mbox_matches(app: &App) -> Result<bool> {
-    if let Some(_) = matches.subcommand_matches("mailboxes") {
+    if let Some(_) = app.arg_matches.subcommand_matches("mailboxes") {
         debug!("mailboxes command matched");
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
         let mboxes = imap_conn.list_mboxes()?;
-        info!("{}", mboxes);
+        debug!("found {} mailboxes", mboxes.0.len());
         trace!("mailboxes: {:?}", mboxes);
+        app.output.print(mboxes);
 
         imap_conn.logout();
         return Ok(true);

src/mbox/model.rs

@@ -2,10 +2,7 @@ use imap;
 use serde::Serialize;
 use std::fmt;
 
-use crate::{
+use crate::table::{Cell, Row, Table};
-    output::fmt::{get_output_fmt, OutputFmt, Response},
-    table::{Cell, Row, Table},
-};
 
 // Mbox
 
@@ -42,7 +39,7 @@ impl Table for Mbox {
 
     fn row(&self) -> Row {
         Row::new()
-            .cell(Cell::new(&self.delim).red())
+            .cell(Cell::new(&self.delim).white())
             .cell(Cell::new(&self.name).green())
             .cell(Cell::new(&self.attributes.join(", ")).shrinkable().yellow())
     }
@@ -55,16 +52,6 @@ pub struct Mboxes(pub Vec<Mbox>);
 
 impl fmt::Display for Mboxes {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        unsafe {
+        writeln!(f, "\n{}", Table::render(&self.0))
-            match get_output_fmt() {
-                &OutputFmt::Plain => {
-                    writeln!(f, "\n{}", Table::render(&self.0))
-                }
-                &OutputFmt::Json => {
-                    let res = serde_json::to_string(&Response::new(self)).unwrap();
-                    write!(f, "{}", res)
-                }
-            }
-        }
     }
 }

src/msg/cli.rs

@@ -1,10 +1,10 @@
-use clap::{self, App, Arg, ArgMatches, SubCommand};
+use clap;
 use error_chain::error_chain;
-use log::{debug, error, info, trace};
+use log::{debug, error, trace};
 use std::{fs, ops::Deref};
 
 use crate::{
-    config::model::{Account, Config},
+    app::App,
     flag::model::Flag,
     imap::model::ImapConnector,
     input,
@@ -15,7 +15,6 @@ use crate::{
 
 error_chain! {
     links {
-        Config(crate::config::model::Error, crate::config::model::ErrorKind);
         Imap(crate::imap::model::Error, crate::imap::model::ErrorKind);
         Input(crate::input::Error, crate::input::ErrorKind);
         MsgModel(crate::msg::model::Error, crate::msg::model::ErrorKind);
@@ -26,30 +25,30 @@ error_chain! {
     }
 }
 
-pub fn uid_arg<'a>() -> Arg<'a, 'a> {
+pub fn uid_arg<'a>() -> clap::Arg<'a, 'a> {
-    Arg::with_name("uid")
+    clap::Arg::with_name("uid")
         .help("Specifies the targetted message")
         .value_name("UID")
         .required(true)
 }
 
-fn reply_all_arg<'a>() -> Arg<'a, 'a> {
+fn reply_all_arg<'a>() -> clap::Arg<'a, 'a> {
-    Arg::with_name("reply-all")
+    clap::Arg::with_name("reply-all")
         .help("Includes all recipients")
         .short("a")
         .long("all")
 }
 
-fn page_size_arg<'a>() -> Arg<'a, 'a> {
+fn page_size_arg<'a>() -> clap::Arg<'a, 'a> {
-    Arg::with_name("page-size")
+    clap::Arg::with_name("page-size")
         .help("Page size")
         .short("s")
         .long("size")
         .value_name("INT")
 }
 
-fn page_arg<'a>() -> Arg<'a, 'a> {
+fn page_arg<'a>() -> clap::Arg<'a, 'a> {
-    Arg::with_name("page")
+    clap::Arg::with_name("page")
         .help("Page number")
         .short("p")
         .long("page")
@@ -57,8 +56,8 @@ fn page_arg<'a>() -> Arg<'a, 'a> {
         .default_value("0")
 }
 
-fn attachment_arg<'a>() -> Arg<'a, 'a> {
+fn attachment_arg<'a>() -> clap::Arg<'a, 'a> {
-    Arg::with_name("attachments")
+    clap::Arg::with_name("attachments")
         .help("Adds attachment to the message")
         .short("a")
         .long("attachment")
@@ -67,41 +66,41 @@ fn attachment_arg<'a>() -> Arg<'a, 'a> {
         .takes_value(true)
 }
 
-pub fn msg_subcmds<'s>() -> Vec<App<'s, 's>> {
+pub fn msg_subcmds<'a>() -> Vec<clap::App<'a, 'a>> {
     vec![
-        SubCommand::with_name("list")
+        clap::SubCommand::with_name("list")
             .aliases(&["lst", "l"])
             .about("Lists all messages")
             .arg(page_size_arg())
             .arg(page_arg()),
-        SubCommand::with_name("search")
+        clap::SubCommand::with_name("search")
             .aliases(&["query", "q", "s"])
             .about("Lists messages matching the given IMAP query")
             .arg(page_size_arg())
             .arg(page_arg())
             .arg(
-                Arg::with_name("query")
+                clap::Arg::with_name("query")
                     .help("IMAP query (see https://tools.ietf.org/html/rfc3501#section-6.4.4)")
                     .value_name("QUERY")
                     .multiple(true)
                     .required(true),
             ),
-        SubCommand::with_name("write")
+        clap::SubCommand::with_name("write")
             .aliases(&["w"])
             .about("Writes a new message")
             .arg(attachment_arg()),
-        SubCommand::with_name("send")
+        clap::SubCommand::with_name("send")
             .about("Sends a raw message")
-            .arg(Arg::with_name("message").raw(true)),
+            .arg(clap::Arg::with_name("message").raw(true)),
-        SubCommand::with_name("save")
+        clap::SubCommand::with_name("save")
             .about("Saves a raw message")
-            .arg(Arg::with_name("message").raw(true)),
+            .arg(clap::Arg::with_name("message").raw(true)),
-        SubCommand::with_name("read")
+        clap::SubCommand::with_name("read")
             .aliases(&["r"])
             .about("Reads text bodies of a message")
             .arg(uid_arg())
             .arg(
-                Arg::with_name("mime-type")
+                clap::Arg::with_name("mime-type")
                     .help("MIME type to use")
                     .short("t")
                     .long("mime-type")
@@ -110,55 +109,55 @@ pub fn msg_subcmds<'s>() -> Vec<App<'s, 's>> {
                     .default_value("plain"),
             )
             .arg(
-                Arg::with_name("raw")
+                clap::Arg::with_name("raw")
                     .help("Reads raw message")
                     .long("raw")
                     .short("r"),
             ),
-        SubCommand::with_name("attachments")
+        clap::SubCommand::with_name("attachments")
             .aliases(&["attach", "att", "a"])
             .about("Downloads all message attachments")
             .arg(uid_arg()),
-        SubCommand::with_name("reply")
+        clap::SubCommand::with_name("reply")
             .aliases(&["rep", "re"])
             .about("Answers to a message")
             .arg(uid_arg())
             .arg(reply_all_arg()),
-        SubCommand::with_name("forward")
+        clap::SubCommand::with_name("forward")
             .aliases(&["fwd", "f"])
             .about("Forwards a message")
             .arg(uid_arg()),
-        SubCommand::with_name("copy")
+        clap::SubCommand::with_name("copy")
             .aliases(&["cp", "c"])
             .about("Copies a message to the targetted mailbox")
             .arg(uid_arg())
             .arg(mbox_target_arg()),
-        SubCommand::with_name("move")
+        clap::SubCommand::with_name("move")
             .aliases(&["mv", "m"])
             .about("Moves a message to the targetted mailbox")
             .arg(uid_arg())
             .arg(mbox_target_arg()),
-        SubCommand::with_name("delete")
+        clap::SubCommand::with_name("delete")
             .aliases(&["remove", "rm", "del", "d"])
             .about("Deletes a message")
             .arg(uid_arg()),
-        SubCommand::with_name("template")
+        clap::SubCommand::with_name("template")
             .aliases(&["tpl", "t"])
             .about("Generates a message template")
             .subcommand(
-                SubCommand::with_name("new")
+                clap::SubCommand::with_name("new")
                     .aliases(&["n"])
                     .about("Generates a new message template"),
             )
             .subcommand(
-                SubCommand::with_name("reply")
+                clap::SubCommand::with_name("reply")
                     .aliases(&["rep", "r"])
                     .about("Generates a reply message template")
                     .arg(uid_arg())
                     .arg(reply_all_arg()),
             )
             .subcommand(
-                SubCommand::with_name("forward")
+                clap::SubCommand::with_name("forward")
                     .aliases(&["fwd", "fw", "f"])
                     .about("Generates a forward message template")
                     .arg(uid_arg()),
@@ -166,19 +165,14 @@ pub fn msg_subcmds<'s>() -> Vec<App<'s, 's>> {
     ]
 }
 
-pub fn msg_matches(
+pub fn msg_matches(app: &App) -> Result<bool> {
-    config: &Config,
+    if let Some(matches) = app.arg_matches.subcommand_matches("list") {
-    account: &Account,
-    mbox: &str,
-    matches: &ArgMatches,
-) -> Result<bool> {
-    if let Some(matches) = matches.subcommand_matches("list") {
         debug!("list command matched");
 
         let page_size: usize = matches
             .value_of("page-size")
             .and_then(|s| s.parse().ok())
-            .unwrap_or(config.default_page_size(&account));
+            .unwrap_or(app.config.default_page_size(&app.account));
         debug!("page size: {}", &page_size);
         let page: usize = matches
             .value_of("page")
@@ -187,23 +181,23 @@ pub fn msg_matches(
             .unwrap_or_default();
         debug!("page: {}", &page);
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
-        let msgs = imap_conn.list_msgs(&mbox, &page_size, &page)?;
+        let msgs = imap_conn.list_msgs(&app.mbox, &page_size, &page)?;
         let msgs = Msgs::from(&msgs);
-        info!("{}", msgs);
         trace!("messages: {:?}", msgs);
+        app.output.print(msgs);
 
         imap_conn.logout();
         return Ok(true);
     }
 
-    if let Some(matches) = matches.subcommand_matches("search") {
+    if let Some(matches) = app.arg_matches.subcommand_matches("search") {
         debug!("search command matched");
 
         let page_size: usize = matches
             .value_of("page-size")
             .and_then(|s| s.parse().ok())
-            .unwrap_or(config.default_page_size(&account));
+            .unwrap_or(app.config.default_page_size(&app.account));
         debug!("page size: {}", &page_size);
         let page: usize = matches
             .value_of("page")
@@ -238,17 +232,17 @@ pub fn msg_matches(
             .join(" ");
         debug!("query: {}", &page);
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
-        let msgs = imap_conn.search_msgs(&mbox, &query, &page_size, &page)?;
+        let msgs = imap_conn.search_msgs(&app.mbox, &query, &page_size, &page)?;
         let msgs = Msgs::from(&msgs);
-        info!("{}", msgs);
         trace!("messages: {:?}", msgs);
+        app.output.print(msgs);
 
         imap_conn.logout();
         return Ok(true);
     }
 
-    if let Some(matches) = matches.subcommand_matches("read") {
+    if let Some(matches) = app.arg_matches.subcommand_matches("read") {
         debug!("read command matched");
 
         let uid = matches.value_of("uid").unwrap();
@@ -258,30 +252,30 @@ pub fn msg_matches(
         let raw = matches.is_present("raw");
         debug!("raw: {}", raw);
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
-        let msg = imap_conn.read_msg(&mbox, &uid)?;
+        let msg = imap_conn.read_msg(&app.mbox, &uid)?;
         if raw {
             let msg = String::from_utf8(msg)
                 .chain_err(|| "Could not decode raw message as utf8 string")?;
             let msg = msg.trim_end_matches("\n");
-            info!("{}", msg);
+            app.output.print(msg);
         } else {
             let msg = ReadableMsg::from_bytes(&mime, &msg)?;
-            info!("{}", msg);
+            app.output.print(msg);
         }
 
         imap_conn.logout();
         return Ok(true);
     }
 
-    if let Some(matches) = matches.subcommand_matches("attachments") {
+    if let Some(matches) = app.arg_matches.subcommand_matches("attachments") {
         debug!("attachments command matched");
 
         let uid = matches.value_of("uid").unwrap();
         debug!("uid: {}", &uid);
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
-        let msg = imap_conn.read_msg(&mbox, &uid)?;
+        let msg = imap_conn.read_msg(&app.mbox, &uid)?;
         let attachments = Attachments::from_bytes(&msg)?;
         debug!(
             "{} attachment(s) found for message {}",
@@ -289,30 +283,37 @@ pub fn msg_matches(
             &uid
         );
         for attachment in attachments.0.iter() {
-            let filepath = config.downloads_filepath(&account, &attachment.filename);
+            let filepath = app
+                .config
+                .downloads_filepath(&app.account, &attachment.filename);
             debug!("downloading {}…", &attachment.filename);
             fs::write(&filepath, &attachment.raw)
                 .chain_err(|| format!("Could not save attachment {:?}", filepath))?;
         }
-        info!(
+
+        debug!(
             "{} attachment(s) successfully downloaded",
             &attachments.0.len()
         );
+        app.output.print(format!(
+            "{} attachment(s) successfully downloaded",
+            &attachments.0.len()
+        ));
 
         imap_conn.logout();
         return Ok(true);
     }
 
-    if let Some(matches) = matches.subcommand_matches("write") {
+    if let Some(matches) = app.arg_matches.subcommand_matches("write") {
         debug!("write command matched");
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
         let attachments = matches
             .values_of("attachments")
             .unwrap_or_default()
             .map(String::from)
             .collect::<Vec<_>>();
-        let tpl = Msg::build_new_tpl(&config, &account)?;
+        let tpl = Msg::build_new_tpl(&app.config, &app.account)?;
         let content = input::open_editor_with_tpl(tpl.to_string().as_bytes())?;
         let mut msg = Msg::from(content);
         msg.attachments = attachments;
@@ -323,10 +324,10 @@ pub fn msg_matches(
                     input::PostEditChoice::Send => {
                         debug!("sending message…");
                         let msg = msg.to_sendable_msg()?;
-                        smtp::send(&account, &msg)?;
+                        smtp::send(&app.account, &msg)?;
                         imap_conn.append_msg("Sent", &msg.formatted(), &[Flag::Seen])?;
                         input::remove_draft()?;
-                        info!("Message successfully sent");
+                        app.output.print("Message successfully sent");
                         break;
                     }
                     input::PostEditChoice::Edit => {
@@ -338,7 +339,7 @@ pub fn msg_matches(
                         debug!("saving to draft…");
                         imap_conn.append_msg("Drafts", &msg.to_vec()?, &[Flag::Seen])?;
                         input::remove_draft()?;
-                        info!("Message successfully saved to Drafts");
+                        app.output.print("Message successfully saved to Drafts");
                         break;
                     }
                     input::PostEditChoice::Discard => {
@@ -353,7 +354,7 @@ pub fn msg_matches(
         return Ok(true);
     }
 
-    if let Some(matches) = matches.subcommand_matches("reply") {
+    if let Some(matches) = app.arg_matches.subcommand_matches("reply") {
         debug!("reply command matched");
 
         let uid = matches.value_of("uid").unwrap();
@@ -366,12 +367,12 @@ pub fn msg_matches(
         debug!("found {} attachments", attachments.len());
         trace!("attachments: {:?}", attachments);
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
-        let msg = Msg::from(imap_conn.read_msg(&mbox, &uid)?);
+        let msg = Msg::from(imap_conn.read_msg(&app.mbox, &uid)?);
         let tpl = if matches.is_present("reply-all") {
-            msg.build_reply_all_tpl(&config, &account)?
+            msg.build_reply_all_tpl(&app.config, &app.account)?
         } else {
-            msg.build_reply_tpl(&config, &account)?
+            msg.build_reply_tpl(&app.config, &app.account)?
         };
 
         let content = input::open_editor_with_tpl(&tpl.to_string().as_bytes())?;
@@ -384,11 +385,11 @@ pub fn msg_matches(
                     input::PostEditChoice::Send => {
                         debug!("sending message…");
                         let msg = msg.to_sendable_msg()?;
-                        smtp::send(&account, &msg)?;
+                        smtp::send(&app.account, &msg)?;
                         imap_conn.append_msg("Sent", &msg.formatted(), &[Flag::Seen])?;
-                        imap_conn.add_flags(&mbox, uid, "\\Answered")?;
+                        imap_conn.add_flags(&app.mbox, uid, "\\Answered")?;
                         input::remove_draft()?;
-                        info!("Message successfully sent");
+                        app.output.print("Message successfully sent");
                         break;
                     }
                     input::PostEditChoice::Edit => {
@@ -400,7 +401,7 @@ pub fn msg_matches(
                         debug!("saving to draft…");
                         imap_conn.append_msg("Drafts", &msg.to_vec()?, &[Flag::Seen])?;
                         input::remove_draft()?;
-                        info!("Message successfully saved to Drafts");
+                        app.output.print("Message successfully saved to Drafts");
                         break;
                     }
                     input::PostEditChoice::Discard => {
@@ -416,7 +417,7 @@ pub fn msg_matches(
         return Ok(true);
     }
 
-    if let Some(matches) = matches.subcommand_matches("forward") {
+    if let Some(matches) = app.arg_matches.subcommand_matches("forward") {
         debug!("forward command matched");
 
         let uid = matches.value_of("uid").unwrap();
@@ -429,9 +430,9 @@ pub fn msg_matches(
         debug!("found {} attachments", attachments.len());
         trace!("attachments: {:?}", attachments);
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
-        let msg = Msg::from(imap_conn.read_msg(&mbox, &uid)?);
+        let msg = Msg::from(imap_conn.read_msg(&app.mbox, &uid)?);
-        let tpl = msg.build_forward_tpl(&config, &account)?;
+        let tpl = msg.build_forward_tpl(&app.config, &app.account)?;
         let content = input::open_editor_with_tpl(&tpl.to_string().as_bytes())?;
         let mut msg = Msg::from(content);
         msg.attachments = attachments;
@@ -442,10 +443,10 @@ pub fn msg_matches(
                     input::PostEditChoice::Send => {
                         debug!("sending message…");
                         let msg = msg.to_sendable_msg()?;
-                        smtp::send(&account, &msg)?;
+                        smtp::send(&app.account, &msg)?;
                         imap_conn.append_msg("Sent", &msg.formatted(), &[Flag::Seen])?;
                         input::remove_draft()?;
-                        info!("Message successfully sent");
+                        app.output.print("Message successfully sent");
                         break;
                     }
                     input::PostEditChoice::Edit => {
@@ -457,7 +458,7 @@ pub fn msg_matches(
                         debug!("saving to draft…");
                         imap_conn.append_msg("Drafts", &msg.to_vec()?, &[Flag::Seen])?;
                         input::remove_draft()?;
-                        info!("Message successfully saved to Drafts");
+                        app.output.print("Message successfully saved to Drafts");
                         break;
                     }
                     input::PostEditChoice::Discard => {
@@ -473,14 +474,14 @@ pub fn msg_matches(
         return Ok(true);
     }
 
-    if let Some(matches) = matches.subcommand_matches("template") {
+    if let Some(matches) = app.arg_matches.subcommand_matches("template") {
         debug!("template command matched");
 
         if let Some(_) = matches.subcommand_matches("new") {
             debug!("new command matched");
-            let tpl = Msg::build_new_tpl(&config, &account)?;
+            let tpl = Msg::build_new_tpl(&app.config, &app.account)?;
-            info!("{}", tpl);
             trace!("tpl: {:?}", tpl);
+            app.output.print(tpl);
         }
 
         if let Some(matches) = matches.subcommand_matches("reply") {
@@ -489,15 +490,15 @@ pub fn msg_matches(
             let uid = matches.value_of("uid").unwrap();
             debug!("uid: {}", uid);
 
-            let mut imap_conn = ImapConnector::new(&account)?;
+            let mut imap_conn = ImapConnector::new(&app.account)?;
-            let msg = Msg::from(imap_conn.read_msg(&mbox, &uid)?);
+            let msg = Msg::from(imap_conn.read_msg(&app.mbox, &uid)?);
             let tpl = if matches.is_present("reply-all") {
-                msg.build_reply_all_tpl(&config, &account)?
+                msg.build_reply_all_tpl(&app.config, &app.account)?
             } else {
-                msg.build_reply_tpl(&config, &account)?
+                msg.build_reply_tpl(&app.config, &app.account)?
             };
-            info!("{}", tpl);
             trace!("tpl: {:?}", tpl);
+            app.output.print(tpl);
 
             imap_conn.logout();
         }
@@ -508,11 +509,11 @@ pub fn msg_matches(
             let uid = matches.value_of("uid").unwrap();
             debug!("uid: {}", uid);
 
-            let mut imap_conn = ImapConnector::new(&account)?;
+            let mut imap_conn = ImapConnector::new(&app.account)?;
-            let msg = Msg::from(imap_conn.read_msg(&mbox, &uid)?);
+            let msg = Msg::from(imap_conn.read_msg(&app.mbox, &uid)?);
-            let tpl = msg.build_forward_tpl(&config, &account)?;
+            let tpl = msg.build_forward_tpl(&app.config, &app.account)?;
-            info!("{}", tpl);
             trace!("tpl: {:?}", tpl);
+            app.output.print(tpl);
 
             imap_conn.logout();
         }
@@ -520,7 +521,7 @@ pub fn msg_matches(
         return Ok(true);
     }
 
-    if let Some(matches) = matches.subcommand_matches("copy") {
+    if let Some(matches) = app.arg_matches.subcommand_matches("copy") {
         debug!("copy command matched");
 
         let uid = matches.value_of("uid").unwrap();
@@ -528,18 +529,22 @@ pub fn msg_matches(
         let target = matches.value_of("target").unwrap();
         debug!("target: {}", &target);
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
-        let msg = Msg::from(imap_conn.read_msg(&mbox, &uid)?);
+        let msg = Msg::from(imap_conn.read_msg(&app.mbox, &uid)?);
         let mut flags = msg.flags.deref().to_vec();
         flags.push(Flag::Seen);
         imap_conn.append_msg(target, &msg.raw, &flags)?;
-        info!("Message {} successfully copied to folder `{}`", uid, target);
+        debug!("message {} successfully copied to folder `{}`", uid, target);
+        app.output.print(format!(
+            "Message {} successfully copied to folder `{}`",
+            uid, target
+        ));
 
         imap_conn.logout();
         return Ok(true);
     }
 
-    if let Some(matches) = matches.subcommand_matches("move") {
+    if let Some(matches) = app.arg_matches.subcommand_matches("move") {
         debug!("move command matched");
 
         let uid = matches.value_of("uid").unwrap();
@@ -547,55 +552,61 @@ pub fn msg_matches(
         let target = matches.value_of("target").unwrap();
         debug!("target: {}", &target);
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
-        let msg = Msg::from(imap_conn.read_msg(&mbox, &uid)?);
+        let msg = Msg::from(imap_conn.read_msg(&app.mbox, &uid)?);
         let mut flags = msg.flags.deref().to_vec();
         flags.push(Flag::Seen);
         imap_conn.append_msg(target, &msg.raw, msg.flags.deref())?;
-        imap_conn.add_flags(&mbox, uid, "\\Seen \\Deleted")?;
+        imap_conn.add_flags(&app.mbox, uid, "\\Seen \\Deleted")?;
-        info!("Message {} successfully moved to folder `{}`", uid, target);
+        debug!("message {} successfully moved to folder `{}`", uid, target);
+        app.output.print(format!(
+            "Message {} successfully moved to folder `{}`",
+            uid, target
+        ));
 
-        imap_conn.expunge(&mbox)?;
+        imap_conn.expunge(&app.mbox)?;
         imap_conn.logout();
         return Ok(true);
     }
 
-    if let Some(matches) = matches.subcommand_matches("delete") {
+    if let Some(matches) = app.arg_matches.subcommand_matches("delete") {
         debug!("delete command matched");
 
         let uid = matches.value_of("uid").unwrap();
         debug!("uid: {}", &uid);
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
-        imap_conn.add_flags(&mbox, uid, "\\Seen \\Deleted")?;
+        imap_conn.add_flags(&app.mbox, uid, "\\Seen \\Deleted")?;
-        info!("Message {} successfully deleted", uid);
+        debug!("message {} successfully deleted", uid);
+        app.output
+            .print(format!("Message {} successfully deleted", uid));
 
-        imap_conn.expunge(&mbox)?;
+        imap_conn.expunge(&app.mbox)?;
         imap_conn.logout();
         return Ok(true);
     }
 
-    if let Some(matches) = matches.subcommand_matches("send") {
+    if let Some(matches) = app.arg_matches.subcommand_matches("send") {
         debug!("send command matched");
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
         let msg = matches.value_of("message").unwrap();
         let msg = Msg::from(msg.to_string());
         let msg = msg.to_sendable_msg()?;
-        smtp::send(&account, &msg)?;
+        smtp::send(&app.account, &msg)?;
         imap_conn.append_msg("Sent", &msg.formatted(), &[Flag::Seen])?;
 
         imap_conn.logout();
         return Ok(true);
     }
 
-    if let Some(matches) = matches.subcommand_matches("save") {
+    if let Some(matches) = app.arg_matches.subcommand_matches("save") {
         debug!("save command matched");
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
         let msg = matches.value_of("message").unwrap();
         let msg = Msg::from(msg.to_string());
-        imap_conn.append_msg(&mbox, &msg.to_vec()?, &[Flag::Seen])?;
+        imap_conn.append_msg(&app.mbox, &msg.to_vec()?, &[Flag::Seen])?;
 
         imap_conn.logout();
         return Ok(true);
@@ -604,10 +615,11 @@ pub fn msg_matches(
     {
         debug!("default list command matched");
 
-        let mut imap_conn = ImapConnector::new(&account)?;
+        let mut imap_conn = ImapConnector::new(&app.account)?;
-        let msgs = imap_conn.list_msgs(&mbox, &config.default_page_size(&account), &0)?;
+        let msgs =
+            imap_conn.list_msgs(&app.mbox, &app.config.default_page_size(&app.account), &0)?;
         let msgs = Msgs::from(&msgs);
-        info!("{}", msgs);
+        app.output.print(msgs);
 
         imap_conn.logout();
         Ok(true)

src/msg/model.rs

@@ -15,7 +15,6 @@ use uuid::Uuid;
 use crate::{
     config::model::{Account, Config},
     flag::model::{Flag, Flags},
-    output::fmt::{get_output_fmt, OutputFmt, Response},
     table::{Cell, Row, Table},
 };
 
@@ -33,17 +32,7 @@ pub struct Tpl(String);
 
 impl fmt::Display for Tpl {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        unsafe {
+        write!(f, "{}", self.0)
-            match get_output_fmt() {
-                &OutputFmt::Plain => {
-                    write!(f, "{}", self.0)
-                }
-                &OutputFmt::Json => {
-                    let res = serde_json::to_string(&Response::new(self)).unwrap();
-                    write!(f, "{}", res)
-                }
-            }
-        }
     }
 }
 
@@ -132,17 +121,7 @@ impl Serialize for ReadableMsg {
 
 impl fmt::Display for ReadableMsg {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        unsafe {
+        writeln!(f, "{}", self.content)
-            match get_output_fmt() {
-                &OutputFmt::Plain => {
-                    writeln!(f, "{}", self.content)
-                }
-                &OutputFmt::Json => {
-                    let res = serde_json::to_string(&Response::new(self)).unwrap();
-                    write!(f, "{}", res)
-                }
-            }
-        }
     }
 }
 
@@ -677,16 +656,6 @@ impl<'m> From<&'m imap::types::ZeroCopy<Vec<imap::types::Fetch>>> for Msgs<'m> {
 
 impl<'m> fmt::Display for Msgs<'m> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        unsafe {
+        writeln!(f, "\n{}", Table::render(&self.0))
-            match get_output_fmt() {
-                &OutputFmt::Plain => {
-                    writeln!(f, "\n{}", Table::render(&self.0))
-                }
-                &OutputFmt::Json => {
-                    let res = serde_json::to_string(&Response::new(self)).unwrap();
-                    write!(f, "{}", res)
-                }
-            }
-        }
     }
 }

src/output/fmt.rs

@@ -1,15 +1,7 @@
 use serde::Serialize;
 use std::fmt;
 
-pub static mut OUTPUT_FMT: &'static OutputFmt = &OutputFmt::Plain;
+// Output format
-
-pub fn set_output_fmt(output_fmt: &'static OutputFmt) {
-    unsafe { OUTPUT_FMT = output_fmt }
-}
-
-pub unsafe fn get_output_fmt() -> &'static OutputFmt {
-    OUTPUT_FMT
-}
 
 pub enum OutputFmt {
     Plain,
@@ -38,6 +30,8 @@ impl fmt::Display for OutputFmt {
     }
 }
 
+// Response helper
+
 #[derive(Serialize)]
 pub struct Response<T: Serialize + fmt::Display> {
     response: T,
@@ -49,17 +43,4 @@ impl<T: Serialize + fmt::Display> Response<T> {
     }
 }
 
-impl<T: Serialize + fmt::Display> fmt::Display for Response<T> {
+// Print helper
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        unsafe {
-            match get_output_fmt() {
-                &OutputFmt::Plain => {
-                    writeln!(f, "{}", self.response)
-                }
-                &OutputFmt::Json => {
-                    write!(f, "{}", serde_json::to_string(self).unwrap())
-                }
-            }
-        }
-    }
-}

src/output/log.rs

@@ -1,83 +0,0 @@
-use chrono::Local;
-use env_logger;
-use error_chain::error_chain;
-use log::{self, debug, Level, LevelFilter};
-use std::{fmt, io, io::Write, ops::Deref};
-
-use super::fmt::{set_output_fmt, OutputFmt};
-
-error_chain! {}
-
-// Log level wrapper
-
-pub struct LogLevel(pub LevelFilter);
-
-impl From<&str> for LogLevel {
-    fn from(s: &str) -> Self {
-        match s {
-            "error" => Self(LevelFilter::Error),
-            "warn" => Self(LevelFilter::Warn),
-            "debug" => Self(LevelFilter::Debug),
-            "trace" => Self(LevelFilter::Trace),
-            "info" | _ => Self(LevelFilter::Info),
-        }
-    }
-}
-
-impl fmt::Display for LogLevel {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "{}", self.deref())
-    }
-}
-
-impl Deref for LogLevel {
-    type Target = LevelFilter;
-
-    fn deref(&self) -> &Self::Target {
-        &self.0
-    }
-}
-
-// Init
-
-pub fn init(fmt: OutputFmt, filter: LogLevel) -> Result<()> {
-    let level_filter = filter.deref();
-    let level = level_filter.to_level();
-
-    match fmt {
-        OutputFmt::Plain => {
-            set_output_fmt(&OutputFmt::Plain);
-        }
-        OutputFmt::Json => {
-            set_output_fmt(&OutputFmt::Json);
-        }
-    };
-
-    env_logger::Builder::new()
-        .target(env_logger::Target::Stdout)
-        .format(move |buf, record| match level {
-            None => Ok(()),
-            Some(Level::Info) => match record.metadata().level() {
-                Level::Info => write!(buf, "{}", record.args()),
-                Level::Error => writeln!(&mut io::stderr(), "{}", record.args()),
-                _ => writeln!(buf, "{}", record.args()),
-            },
-            _ => {
-                writeln!(
-                    buf,
-                    "[{} {:5} {}] {}",
-                    Local::now().format("%Y-%m-%dT%H:%M:%S"),
-                    record.metadata().level(),
-                    record.module_path().unwrap_or_default(),
-                    record.args(),
-                )
-            }
-        })
-        .filter_level(*level_filter)
-        .init();
-
-    debug!("output format: {}", fmt);
-    debug!("log level: {}", filter);
-
-    Ok(())
-}

src/output/mod.rs

@@ -1,4 +1,3 @@
 pub(crate) mod cli;
-pub(crate) mod fmt;
+pub(crate) mod model;
-pub(crate) mod log;
 pub(crate) mod utils;

src/output/model.rs

@@ -0,0 +1,67 @@
+use serde::Serialize;
+use std::fmt;
+
+// Output format
+
+#[derive(Debug)]
+pub enum OutputFmt {
+    Plain,
+    Json,
+}
+
+impl From<&str> for OutputFmt {
+    fn from(s: &str) -> Self {
+        match s {
+            "json" => Self::Json,
+            "plain" | _ => Self::Plain,
+        }
+    }
+}
+
+impl fmt::Display for OutputFmt {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        let fmt = match *self {
+            OutputFmt::Json => "JSON",
+            OutputFmt::Plain => "PLAIN",
+        };
+
+        write!(f, "{}", fmt)
+    }
+}
+
+// JSON output helper
+
+#[derive(Debug, Serialize)]
+pub struct OutputJson<T: Serialize> {
+    response: T,
+}
+
+impl<T: Serialize> OutputJson<T> {
+    pub fn new(response: T) -> Self {
+        Self { response }
+    }
+}
+
+// Output
+
+#[derive(Debug)]
+pub struct Output {
+    fmt: OutputFmt,
+}
+
+impl Output {
+    pub fn new(fmt: &str) -> Self {
+        Self { fmt: fmt.into() }
+    }
+
+    pub fn print<T: Serialize + fmt::Display>(&self, item: T) {
+        match self.fmt {
+            OutputFmt::Plain => {
+                println!("{}", item)
+            }
+            OutputFmt::Json => {
+                print!("{}", serde_json::to_string(&OutputJson::new(item)).unwrap())
+            }
+        }
+    }
+}