From 264cd5f94b4aa34c732691878099a0f7ee320a3d Mon Sep 17 00:00:00 2001
From: FliegendeWurst <2012gdwu+github@posteo.de>
Date: Sat, 3 Apr 2021 19:52:15 +0200
Subject: [PATCH] browse: initial TUI list interface

---
 Cargo.lock        | 336 ++++++++++++++++++++++++++++++++++++++++++++--
 Cargo.toml        |   2 +
 src/bin/browse.rs |  29 +++-
 3 files changed, 350 insertions(+), 17 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index d499b3c..9ca81ce 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -8,6 +8,17 @@ version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "739f4a8db6605981345c5654f3a85b056ce52f37a39d34da03f25bf2151ea16e"
 
+[[package]]
+name = "ahash"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "796540673305a66d127804eef19ad696f1f204b8c1025aaca4958c17eab32877"
+dependencies = [
+ "getrandom",
+ "once_cell",
+ "version_check",
+]
+
 [[package]]
 name = "aho-corasick"
 version = "0.7.15"
@@ -23,6 +34,12 @@ version = "1.0.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "28b2cd92db5cbd74e8e5028f7e27dd7aa3090e89e4f2a197cc7c8dfb69c7063b"
 
+[[package]]
+name = "array-macro"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06e97b4e522f9e55523001238ac59d13a8603af57f69980de5d8de4bbbe8ada6"
+
 [[package]]
 name = "arrayvec"
 version = "0.5.2"
@@ -140,6 +157,124 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ea221b5284a47e40033bf9b66f35f984ec0ea2931eb03505246cd27a963f981b"
 
+[[package]]
+name = "crossbeam-channel"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dca26ee1f8d361640700bde38b2c37d8c22b3ce2d360e1fc1c74ea4b0aa7d775"
+dependencies = [
+ "cfg-if",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7e9d99fa91428effe99c5c6d4634cdeba32b8cf784fc428a2a687f61a952c49"
+dependencies = [
+ "autocfg",
+ "cfg-if",
+ "lazy_static",
+]
+
+[[package]]
+name = "cursive"
+version = "0.16.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6593c3409eb794bf22090bec60dda1e19d1def284478bec7e5a92da3cf977c52"
+dependencies = [
+ "ahash 0.6.3",
+ "cfg-if",
+ "crossbeam-channel",
+ "cursive_core",
+ "lazy_static",
+ "libc",
+ "log",
+ "signal-hook",
+ "termion",
+ "unicode-segmentation",
+ "unicode-width",
+ "wasmer_enumset",
+]
+
+[[package]]
+name = "cursive_core"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "025ac0bcd21ced752d27b70e6aa2285a3513d07b5a0c7f89e71121d20ca1429d"
+dependencies = [
+ "ahash 0.6.3",
+ "chrono",
+ "crossbeam-channel",
+ "enum-map",
+ "lazy_static",
+ "libc",
+ "log",
+ "num",
+ "owning_ref",
+ "syn 1.0.67",
+ "unicode-segmentation",
+ "unicode-width",
+ "wasmer_enumset",
+ "xi-unicode",
+]
+
+[[package]]
+name = "cursive_tree_view"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd59affc6d600a69df27972fb5fe7f38a743aeb0710299e3324022c7d80717a0"
+dependencies = [
+ "cursive_core",
+ "debug_stub_derive",
+]
+
+[[package]]
+name = "darling"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d706e75d87e35569db781a9b5e2416cff1236a47ed380831f959382ccd5f858"
+dependencies = [
+ "darling_core",
+ "darling_macro",
+]
+
+[[package]]
+name = "darling_core"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0c960ae2da4de88a91b2d920c2a7233b400bc33cb28453a2987822d8392519b"
+dependencies = [
+ "fnv",
+ "ident_case",
+ "proc-macro2",
+ "quote 1.0.9",
+ "strsim",
+ "syn 1.0.67",
+]
+
+[[package]]
+name = "darling_macro"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b5a2f4ac4969822c62224815d069952656cadc7084fdca9751e6d959189b72"
+dependencies = [
+ "darling_core",
+ "quote 1.0.9",
+ "syn 1.0.67",
+]
+
+[[package]]
+name = "debug_stub_derive"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "496b7f8a2f853313c3ca370641d7ff3e42c32974fdccda8f0684599ed0a3ff6b"
+dependencies = [
+ "quote 0.3.15",
+ "syn 0.11.11",
+]
+
 [[package]]
 name = "dirs-next"
 version = "2.0.0"
@@ -182,6 +317,27 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c34f04666d835ff5d62e058c3995147c06f42fe86ff053337632bca83e42702d"
 
+[[package]]
+name = "enum-map"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4187999839f4ae8be35cf185d1381aa8dc32d2f5951349cc37ae49ebc4781855"
+dependencies = [
+ "array-macro",
+ "enum-map-derive",
+]
+
+[[package]]
+name = "enum-map-derive"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5c450cf304c9e18d45db562025a14fb1ca0f5c769b6f609309f81d4c31de455"
+dependencies = [
+ "proc-macro2",
+ "quote 1.0.9",
+ "syn 1.0.67",
+]
+
 [[package]]
 name = "fallible-iterator"
 version = "0.2.0"
@@ -200,6 +356,12 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37ab347416e802de484e4d03c7316c48f1ecb56574dfd4a46a80f173ce1de04d"
 
+[[package]]
+name = "fnv"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
+
 [[package]]
 name = "fs2"
 version = "0.4.3"
@@ -237,7 +399,7 @@ version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d7afe4a420e3fe79967a00898cc1f4db7c8a49a9333a29f8a4bd76a253d5cd04"
 dependencies = [
- "ahash",
+ "ahash 0.4.7",
 ]
 
 [[package]]
@@ -249,6 +411,12 @@ dependencies = [
  "hashbrown",
 ]
 
+[[package]]
+name = "ident_case"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
+
 [[package]]
 name = "imap"
 version = "2.4.1"
@@ -280,6 +448,8 @@ dependencies = [
  "anyhow",
  "ascii_table",
  "chrono",
+ "cursive",
+ "cursive_tree_view",
  "imap",
  "itertools",
  "maildir",
@@ -473,6 +643,28 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "num"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b7a8e9be5e039e2ff869df49155f1c06bd01ade2117ec783e56ab0932b67a8f"
+dependencies = [
+ "num-complex",
+ "num-integer",
+ "num-iter",
+ "num-rational",
+ "num-traits",
+]
+
+[[package]]
+name = "num-complex"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "747d632c0c558b87dbabbe6a82f3b4ae03720d0646ac5b7b4dae89394be5f2c5"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "num-integer"
 version = "0.1.44"
@@ -483,6 +675,28 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "num-iter"
+version = "0.1.42"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2021c8337a54d21aca0d59a92577a029af9431cb59b909b03252b9c164fad59"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-rational"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "12ac428b1cb17fce6f731001d307d351ec70a6d202fc2e60f7d4c5e42d8f4f07"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.14"
@@ -510,6 +724,15 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "77af24da69f9d9341038eba93a073b1fdaaa1b788221b00a69bce9e762cb32de"
 
+[[package]]
+name = "owning_ref"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ff55baddef9e4ad00f88b6c743a2a8062d4c6ade126c2a528644b8e444d52ce"
+dependencies = [
+ "stable_deref_trait",
+]
+
 [[package]]
 name = "petgraph"
 version = "0.5.1"
@@ -532,9 +755,15 @@ version = "1.0.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e0704ee1a7e00d7bb417d0770ea303c1bccbabf0ef1667dae92b5967f5f8a71"
 dependencies = [
- "unicode-xid",
+ "unicode-xid 0.2.1",
 ]
 
+[[package]]
+name = "quote"
+version = "0.3.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a6e920b65c65f10b2ae65c831a81a073a89edd28c7cce89475bff467ab4167a"
+
 [[package]]
 name = "quote"
 version = "1.0.9"
@@ -765,8 +994,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b093b7a2bb58203b5da3056c05b4ec1fed827dcfdb37347a8841695263b3d06d"
 dependencies = [
  "proc-macro2",
- "quote",
- "syn",
+ "quote 1.0.9",
+ "syn 1.0.67",
 ]
 
 [[package]]
@@ -780,6 +1009,25 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "signal-hook"
+version = "0.3.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ef33d6d0cd06e0840fba9985aab098c147e67e05cee14d412d3345ed14ff30ac"
+dependencies = [
+ "libc",
+ "signal-hook-registry",
+]
+
+[[package]]
+name = "signal-hook-registry"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16f1d0fef1604ba8f7a073c7e701f213e056707210e9020af4528e0101ce11a6"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "smallvec"
 version = "1.6.1"
@@ -792,12 +1040,24 @@ version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 
+[[package]]
+name = "stable_deref_trait"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
+
 [[package]]
 name = "static_assertions"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
 
+[[package]]
+name = "strsim"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6446ced80d6c486436db5c078dde11a9f73d42b57fb273121e160b84f63d894c"
+
 [[package]]
 name = "subprocess"
 version = "0.2.6"
@@ -808,6 +1068,17 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "syn"
+version = "0.11.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3b891b9015c88c576343b9b3e41c2c11a51c219ef067b264bd9c8aa9b441dad"
+dependencies = [
+ "quote 0.3.15",
+ "synom",
+ "unicode-xid 0.0.4",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.67"
@@ -815,8 +1086,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6498a9efc342871f91cc2d0d694c674368b4ceb40f62b65a7a08c3792935e702"
 dependencies = [
  "proc-macro2",
- "quote",
- "unicode-xid",
+ "quote 1.0.9",
+ "unicode-xid 0.2.1",
+]
+
+[[package]]
+name = "synom"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a393066ed9010ebaed60b9eafa373d4b1baac186dd7e008555b0f702b51945b6"
+dependencies = [
+ "unicode-xid 0.0.4",
 ]
 
 [[package]]
@@ -863,6 +1143,12 @@ version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9337591893a19b88d8d87f2cec1e73fad5cdfd10e5a6f349f498ad6ea2ffb1e3"
 
+[[package]]
+name = "unicode-xid"
+version = "0.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c1f860d7d29cf02cb2f3f359fd35991af3d30bac52c57d265a3c461074cb4dc"
+
 [[package]]
 name = "unicode-xid"
 version = "0.2.1"
@@ -919,8 +1205,8 @@ dependencies = [
  "lazy_static",
  "log",
  "proc-macro2",
- "quote",
- "syn",
+ "quote 1.0.9",
+ "syn 1.0.67",
  "wasm-bindgen-shared",
 ]
 
@@ -930,7 +1216,7 @@ version = "0.2.73"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3e734d91443f177bfdb41969de821e15c516931c3c3db3d318fa1b68975d0f6f"
 dependencies = [
- "quote",
+ "quote 1.0.9",
  "wasm-bindgen-macro-support",
 ]
 
@@ -941,8 +1227,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d53739ff08c8a68b0fdbcd54c372b8ab800b1449ab3c9d706503bc7dd1621b2c"
 dependencies = [
  "proc-macro2",
- "quote",
- "syn",
+ "quote 1.0.9",
+ "syn 1.0.67",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -953,6 +1239,28 @@ version = "0.2.73"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d9a543ae66aa233d14bb765ed9af4a33e81b8b58d1584cf1b47ff8cd0b9e4489"
 
+[[package]]
+name = "wasmer_enumset"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf088cc1f7d247fd96dff0df46fb1bbb747d8a69ae1ecd71aed55c55e354b2d8"
+dependencies = [
+ "num-traits",
+ "wasmer_enumset_derive",
+]
+
+[[package]]
+name = "wasmer_enumset_derive"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8d1b32d98e11194200baf6d3f85eb2d6cfe56f6d9af0dd617f90ca48f958a88"
+dependencies = [
+ "darling",
+ "proc-macro2",
+ "quote 1.0.9",
+ "syn 1.0.67",
+]
+
 [[package]]
 name = "web-sys"
 version = "0.3.50"
@@ -994,3 +1302,9 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "xi-unicode"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a67300977d3dc3f8034dae89778f502b6ba20b269527b3223ba59c0cf393bb8a"
diff --git a/Cargo.toml b/Cargo.toml
index 538ee46..7ae0f79 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,3 +24,5 @@ mailproc = { git = "https://github.com/FliegendeWurst/mailproc.git", branch = "m
 subprocess = "0.2.6"
 mime2ext = "0.1.2"
 petgraph = "0.5.1"
+cursive = { version = "0.16.3", default-features = false, features = ["termion-backend"] }
+cursive_tree_view = "0.7.0"
diff --git a/src/bin/browse.rs b/src/bin/browse.rs
index a844831..ccb0f8d 100644
--- a/src/bin/browse.rs
+++ b/src/bin/browse.rs
@@ -1,5 +1,8 @@
 use std::{array::IntoIter, cell::RefCell, cmp, collections::{HashMap, HashSet}, env};
 
+use cursive::{Cursive, CursiveExt};
+use cursive::views::{ListView, TextView};
+use cursive_tree_view::{Placement, TreeView};
 use inboxid::*;
 use itertools::Itertools;
 use mailparse::ParsedMail;
@@ -93,16 +96,21 @@ fn show_listing(mailbox: &str) -> Result<()> {
 	roots.sort_unstable_by_key(|x| x.1.date);
 	let mails_printed = RefCell::new(HashSet::new());
 
+	let mut siv = Cursive::new();
+
+	let tree = RefCell::new(TreeView::new());
 	// recursive lambda
 	struct PrintThread<'a> {
-		f: &'a dyn Fn(&PrintThread, NodeIndex, usize)
+		f: &'a dyn Fn(&PrintThread, NodeIndex, Placement, usize)
 	}
-	let print_thread = |this: &PrintThread, node, depth| {
+	let print_thread = |this: &PrintThread, node, placement, parent| {
 		let mail = nodes_inv[&node];
-		if mails_printed.borrow().contains(mail) && depth == 0 {
+		if mails_printed.borrow().contains(mail) && placement == Placement::After {
 			return;
 		}
-		println!("{}{}", "   ".repeat(depth), mail.subject);
+		//println!("{}{}", "   ".repeat(depth), mail.subject);
+		let line = mail.subject.clone();
+		let entry = tree.borrow_mut().insert_item(line, placement, parent);
 		mails_printed.borrow_mut().insert(mail);
 		let mut replies = graph.neighbors_directed(node, EdgeDirection::Outgoing).collect_vec();
 		replies.sort_unstable_by_key(|&idx| {
@@ -115,14 +123,23 @@ fn show_listing(mailbox: &str) -> Result<()> {
 			maximum
 		});
 		for r in replies {
-			(this.f)(this, r, depth + 1);
+			(this.f)(this, r, Placement::LastChild, entry.unwrap());
 		}
 	};
 	let print_thread = PrintThread { f: &print_thread };
 
+	let mut x = tree.borrow().len();
 	for root in roots {
-		(print_thread.f)(&print_thread, root.0, 0);
+		let y = tree.borrow().len();
+		(print_thread.f)(&print_thread, root.0, Placement::After, x);
+		x = y
 	}
 
+	siv.add_layer(tree.into_inner());
+
+	siv.add_global_callback('q', |s| s.quit());
+
+	siv.run();
+
 	Ok(())
 }