From 19347d3249dc3088260ba27e001b87ec66df9aa1 Mon Sep 17 00:00:00 2001
From: FliegendeWurst <2012gdwu+github@posteo.de>
Date: Mon, 29 Mar 2021 16:35:15 +0200
Subject: [PATCH] list: mail viewer

---
 Cargo.lock      | 174 +++++++++++++++++++++++++++++++++++++++++++++++-
 Cargo.toml      |   2 +
 src/bin/list.rs | 125 ++++++++++++++++++++++++++++++++++
 src/bin/new.rs  |   2 +-
 src/bin/sync.rs |   8 +--
 5 files changed, 303 insertions(+), 8 deletions(-)
 create mode 100644 src/bin/list.rs

diff --git a/Cargo.lock b/Cargo.lock
index 88a3d7c..48ba417 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -134,6 +134,27 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ea221b5284a47e40033bf9b66f35f984ec0ea2931eb03505246cd27a963f981b"
 
+[[package]]
+name = "dirs-next"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b98cf8ebf19c3d1b223e151f99a4f9f0690dca41414773390fc824184ac833e1"
+dependencies = [
+ "cfg-if",
+ "dirs-sys-next",
+]
+
+[[package]]
+name = "dirs-sys-next"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ebda144c4fe02d1f7ea1a7d9641b6fc6b580adcfa024ae48797ecdeb6825b4d"
+dependencies = [
+ "libc",
+ "redox_users",
+ "winapi",
+]
+
 [[package]]
 name = "either"
 version = "1.6.1"
@@ -149,6 +170,12 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "endian-type"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c34f04666d835ff5d62e058c3995147c06f42fe86ff053337632bca83e42702d"
+
 [[package]]
 name = "fallible-iterator"
 version = "0.2.0"
@@ -161,6 +188,16 @@ version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7360491ce676a36bf9bb3c56c1aa791658183a54d2744120f27285738d90465a"
 
+[[package]]
+name = "fs2"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9564fc758e15025b46aa6643b1b77d047d1a56a1aea6e01002ac0c7026876213"
+dependencies = [
+ "libc",
+ "winapi",
+]
+
 [[package]]
 name = "gethostname"
 version = "0.2.1"
@@ -171,6 +208,17 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.9.1"
@@ -223,8 +271,10 @@ dependencies = [
  "itertools",
  "maildir",
  "mailparse",
+ "moins",
  "rusqlite",
  "rustls-connector",
+ "rustyline",
 ]
 
 [[package]]
@@ -314,6 +364,35 @@ version = "2.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0ee1c47aaa256ecabcaea351eae4a9b01ef39ed810004e298d2511ed284b1525"
 
+[[package]]
+name = "moins"
+version = "0.5.0"
+source = "git+https://github.com/FliegendeWurst/moins?branch=master#fd6d6ccebbe33effe49d13fd26ff2214f1655d41"
+dependencies = [
+ "termion",
+]
+
+[[package]]
+name = "nibble_vec"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77a5d83df9f36fe23f0c3648c6bbb8b0298bb5f1939c8f2704431371f4b84d43"
+dependencies = [
+ "smallvec",
+]
+
+[[package]]
+name = "nix"
+version = "0.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa9b4819da1bc61c0ea48b63b7bc8604064dd43013e7cc325df098d49cd7c18a"
+dependencies = [
+ "bitflags",
+ "cc",
+ "cfg-if",
+ "libc",
+]
+
 [[package]]
 name = "nom"
 version = "5.1.2"
@@ -344,6 +423,12 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "numtoa"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8f8bdf33df195859076e54ab11ee78a1b208382d3a26ec40d142ffc1ecc49ef"
+
 [[package]]
 name = "once_cell"
 version = "1.7.2"
@@ -386,6 +471,44 @@ version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "47b080c5db639b292ac79cbd34be0cfc5d36694768d8341109634d90b86930e2"
 
+[[package]]
+name = "radix_trie"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c069c179fcdc6a2fe24d8d18305cf085fdbd4f922c041943e203685d6a1c58fd"
+dependencies = [
+ "endian-type",
+ "nibble_vec",
+]
+
+[[package]]
+name = "redox_syscall"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94341e4e44e24f6b591b59e47a8a027df12e008d73fd5672dbea9cc22f4507d9"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "redox_termios"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8440d8acb4fd3d277125b4bd01a6f38aee8d814b3b5fc09b3f2b825d37d3fe8f"
+dependencies = [
+ "redox_syscall",
+]
+
+[[package]]
+name = "redox_users"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "528532f3d801c87aec9def2add9ca802fe569e44a544afe633765267840abe64"
+dependencies = [
+ "getrandom",
+ "redox_syscall",
+]
+
 [[package]]
 name = "regex"
 version = "1.4.5"
@@ -469,6 +592,29 @@ dependencies = [
  "security-framework",
 ]
 
+[[package]]
+name = "rustyline"
+version = "8.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9e1b597fcd1eeb1d6b25b493538e5aa19629eb08932184b85fef931ba87e893"
+dependencies = [
+ "bitflags",
+ "cfg-if",
+ "dirs-next",
+ "fs2",
+ "libc",
+ "log",
+ "memchr",
+ "nix",
+ "radix_trie",
+ "scopeguard",
+ "smallvec",
+ "unicode-segmentation",
+ "unicode-width",
+ "utf8parse",
+ "winapi",
+]
+
 [[package]]
 name = "ryu"
 version = "1.0.5"
@@ -485,6 +631,12 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "scopeguard"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
+
 [[package]]
 name = "sct"
 version = "0.6.0"
@@ -538,15 +690,27 @@ checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
 
 [[package]]
 name = "syn"
-version = "1.0.65"
+version = "1.0.67"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f3a1d708c221c5a612956ef9f75b37e454e88d1f7b899fbd3a18d4252012d663"
+checksum = "6498a9efc342871f91cc2d0d694c674368b4ceb40f62b65a7a08c3792935e702"
 dependencies = [
  "proc-macro2",
  "quote",
  "unicode-xid",
 ]
 
+[[package]]
+name = "termion"
+version = "1.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "077185e2eac69c3f8379a4298e1e07cd36beb962290d4a51199acf0fdc10607e"
+dependencies = [
+ "libc",
+ "numtoa",
+ "redox_syscall",
+ "redox_termios",
+]
+
 [[package]]
 name = "time"
 version = "0.1.44"
@@ -582,6 +746,12 @@ version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
 
+[[package]]
+name = "utf8parse"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "936e4b492acfd135421d8dca4b1aa80a7bfc26e702ef3af710e0752684df5372"
+
 [[package]]
 name = "vcpkg"
 version = "0.2.11"
diff --git a/Cargo.toml b/Cargo.toml
index db2f71b..5a195b0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,3 +17,5 @@ ascii_table = { git = "https://gitlab.com/arnekeller/ascii-table.git", branch =
 chrono = "0.4.19"
 # remove when 0.24.3 is released
 rusqlite = { git = "https://github.com/rusqlite/rusqlite", branch = "master", features = ["bundled"] }
+rustyline = "8.0.0"
+moins = { git = "https://github.com/FliegendeWurst/moins", branch = "master" }
diff --git a/src/bin/list.rs b/src/bin/list.rs
new file mode 100644
index 0000000..af4c57b
--- /dev/null
+++ b/src/bin/list.rs
@@ -0,0 +1,125 @@
+use std::{collections::HashMap, env};
+
+use ascii_table::{Align, AsciiTable, Column};
+use chrono::{Local, NaiveDateTime, TimeZone};
+use inboxid::*;
+use itertools::Itertools;
+use mailparse::{MailHeaderMap, dateparse};
+use rustyline::{Editor, error::ReadlineError};
+
+fn main() -> Result<()> {
+	let args = env::args().collect_vec();
+	if args.len() > 1 {
+		show_listing(&args[1])
+	} else {
+		show_listing("INBOX")
+	}
+}
+
+fn show_listing(mailbox: &str) -> Result<()> {
+	let maildir = get_maildir(mailbox)?;
+
+	let mut rows = Vec::new();
+	let mut mail_list = Vec::new();
+	let mut i = 0;
+	// TODO(refactor) merge with new
+	let mut list = maildir.list_cur_sorted(Box::new(|name| {
+		// sort by UID
+		name.splitn(2, '_').nth(1).map(|x| x.parse().unwrap_or(0)).unwrap_or(0)
+	})).collect_vec();
+	let list = list.iter_mut().map(
+		|x| x.as_mut().map(|x| (x.flags().to_owned(), x.id().to_owned(), x.parsed()))).collect_vec();
+	for maile in &list {
+		match maile {
+			Ok((flags, id, Ok(mail))) => {
+				let headers = mail.get_headers();
+				let from = headers.get_all_values("From").join(" ");
+				let subj = headers.get_all_values("Subject").join(" ");
+				let date = headers.get_all_values("Date").join(" ");
+				let date = dateparse(&date).map(|x| {
+					let dt = Local.from_utc_datetime(&NaiveDateTime::from_timestamp(x, 0));
+					dt.format("%Y-%m-%d %H:%M").to_string()
+				}).unwrap_or(date);
+				let mut flags_display = String::new();
+				if flags.contains('F') {
+					flags_display.push('+');
+				}
+				if flags.contains('R') {
+					flags_display.push('R');
+				}
+				if flags.contains('S') {
+					flags_display.push(' ');
+				} else {
+					flags_display.push('*');
+				}
+				rows.push(vec![i.to_string(), flags_display, from, subj, date]);
+				i += 1;
+				mail_list.push((flags, id, mail));
+			}
+			Ok((_, _, Err(e))) => {
+				println!("error parsing mail: {:?}", e);
+			}
+			Err(e) => {
+				println!("error: {:?}", e);
+			}
+		}
+	}
+	rows.sort_unstable_by(|x, y| x[4].cmp(&y[4]));
+	let count = rows.len();
+	let mut mails = HashMap::new();
+	for (i, row) in rows.iter_mut().enumerate() {
+		mails.insert(count - i, &mail_list[row[0].parse::<usize>().unwrap()]);
+		row[0] = (count - i).to_string();
+	}
+
+	let mut ascii_table = AsciiTable::default();
+	ascii_table.draw_lines = false;
+	ascii_table.max_width = usize::MAX;
+	for (i, &(header, align)) in [
+		("i", Align::Right),
+		("---", Align::Right),
+		("From", Align::Left),
+		("Subject", Align::Left),
+		("Date", Align::Left),
+	].iter().enumerate() {
+		let mut column = Column::default();
+		column.header = header.to_owned();
+		column.align = align;
+		column.max_width = usize::MAX;
+		ascii_table.columns.insert(i, column);
+	}
+	ascii_table.print(rows); // prints a 0 if empty :)
+
+	if mails.is_empty() {
+		return Ok(());
+	}
+	let mut rl = Editor::<()>::new();
+	loop {
+		let readline = rl.readline(">> ");
+		match readline {
+			Ok(line) => {
+				let mail = &mails[&line.trim().parse::<usize>().unwrap()];
+				println!("{}", std::str::from_utf8(&mail.2.get_body_raw().unwrap()).unwrap());
+				for x in &mail.2.subparts {
+					if x.ctype.mimetype == "text/html" {
+						continue; // TODO
+					}
+					let mut content = x.get_body().unwrap();
+					moins::Moins::run(&mut content, None);
+				}
+			},
+			Err(ReadlineError::Interrupted) => {
+				break
+			},
+			Err(ReadlineError::Eof) => {
+				break
+			},
+			Err(err) => {
+				println!("Error: {:?}", err);
+				break
+			}
+		}
+	}
+
+	Ok(())
+}
diff --git a/src/bin/new.rs b/src/bin/new.rs
index 46c1b89..3522bdb 100644
--- a/src/bin/new.rs
+++ b/src/bin/new.rs
@@ -23,7 +23,7 @@ fn show_listing(mailbox: &str) -> Result<()> {
 	let mut seen = Vec::new();
 	for mut maile in maildir.list_new_sorted(Box::new(|name| {
 		// sort by UID
-		name.splitn(2, '_').nth(1).map(|x| x.parse().unwrap_or(0)).unwrap_or(0)
+		u32::MAX - name.splitn(2, '_').nth(1).map(|x| x.parse().unwrap_or(0)).unwrap_or(0)
 	})) {
 		match maile.as_mut().map(|x| x.parsed()) {
 		    Ok(Ok(mail)) => {
diff --git a/src/bin/sync.rs b/src/bin/sync.rs
index 824bda5..b0787bb 100644
--- a/src/bin/sync.rs
+++ b/src/bin/sync.rs
@@ -1,5 +1,3 @@
-#![feature(string_remove_matches)]
-
 use std::{collections::HashMap, env};
 
 use imap::types::Flag;
@@ -130,17 +128,17 @@ fn sync(
 				if flags.contains(&Flag::Seen) {
 					f.push('S');
 				} else {
-					f.remove_matches('S');
+					f = f.replace('S', "");
 				}
 				if flags.contains(&Flag::Answered) {
 					f.push('R');
 				} else {
-					f.remove_matches('R');
+					f = f.replace('R', "");
 				}
 				if flags.contains(&Flag::Flagged) {
 					f.push('F');
 				} else {
-					f.remove_matches('F');
+					f = f.replace('F', "");
 				}
 				Maildir::normalize_flags(&f)
 			});