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use std::path::PathBuf;
use anyhow::Result;
use cursive::Cursive;
use cursive::Printer;
use cursive::Rect;
use cursive::View;
use cursive::XY;
use cursive::direction::Direction;
use cursive::event::Event;
use cursive::event::EventResult;
use cursive::view::Nameable;
use cursive::view::Selector;
use cursive::views::ListView;
use cursive::views::LinearLayout;
use cursive::views::NamedView;
use cursive::views::ResizedView;
use cursive::views::TextView;
use mailparse::MailHeaderMap;
use cursive_table_view::TableView;
use cursive_table_view::TableViewItem;
use cursive_table_view::TableColumn;
use crate::mailstore::MailStore;
use crate::mailstore::Mail;
use crate::loader::Loader;
use crate::loader::PostProcessor;
pub const MAIN_VIEW_NAME: &'static str = "main_view";
pub struct MainView {
tabs: cursive_tabs::TabPanel<String>,
}
impl View for MainView {
fn draw(&self, printer: &Printer) {
self.tabs.draw(printer)
}
fn layout(&mut self, xy: XY<usize>) {
self.tabs.layout(xy)
}
fn needs_relayout(&self) -> bool {
self.tabs.needs_relayout()
}
fn required_size(&mut self, constraint: XY<usize>) -> XY<usize> {
self.tabs.required_size(constraint)
}
fn on_event(&mut self, e: Event) -> EventResult {
self.tabs.on_event(e)
}
fn call_on_any<'a>(&mut self, s: &Selector, tpl: &'a mut (dyn FnMut(&mut (dyn View + 'static)) + 'a)) {
self.tabs.call_on_any(s, tpl);
}
fn focus_view(&mut self, s: &Selector) -> Result<(), ()> {
self.tabs.focus_view(s)
}
fn take_focus(&mut self, source: Direction) -> bool {
self.tabs.take_focus(source)
}
fn important_area(&self, view_size: XY<usize>) -> Rect {
self.tabs.important_area(view_size)
}
fn type_name(&self) -> &'static str {
self.tabs.type_name()
}
}
impl MainView {
pub fn new() -> NamedView<Self> {
let tabs = cursive_tabs::TabPanel::default()
.with_bar_alignment(cursive_tabs::Align::Start)
.with_bar_placement(cursive_tabs::Placement::HorizontalTop)
.with_tab(String::from("nobox"), {
ResizedView::new(cursive::view::SizeConstraint::Full,
cursive::view::SizeConstraint::Full,
TextView::new("No mailbox loaded"))
});
MainView { tabs }.with_name(MAIN_VIEW_NAME)
}
pub fn maildir_loader(&mut self, pb: PathBuf) -> MaildirLoader {
debug!("Creating Loader for: {}", pb.display());
MaildirLoader(pb)
}
pub fn add_tab<T: View>(&mut self, id: String, view: T) {
self.tabs.add_tab(id, view)
}
}
pub struct MaildirLoader(PathBuf);
impl Loader for MaildirLoader {
type Output = Vec<MailListingData>;
type Error = String;
type PostProcessedOutput = LinearLayout;
type PostProcessor = MaildirLoaderPostProcessor;
fn load(self) -> Result<Self::Output, Self::Error> {
debug!("Loading: {}", self.0.display());
MailStore::build_from_path(self.0).collect::<Result<MailStore>>()
.map(|store| {
store.cur_mail()
.iter()
.chain(store.new_mail().iter())
.map(|mail| {
debug!("Loaded: {:?}", mail.parsed());
let date = mail.parsed().headers.get_first_value("Date").unwrap_or_else(|| String::from("No date"));
let from = mail.parsed().headers.get_first_value("From").unwrap_or_else(|| String::from("No From"));
let to = mail.parsed().headers.get_first_value("To").unwrap_or_else(|| String::from("No To"));
let subject = mail.parsed().headers.get_first_value("Subject").unwrap_or_else(|| String::from("No Subject"));
// FIXME: do not clone Mail object
MailListingData { mail: mail.clone(), date, from, to, subject }
})
.collect()
})
.map_err(|e| e.to_string())
}
fn postprocessor(&self, load_name: String) -> Self::PostProcessor {
MaildirLoaderPostProcessor { name: load_name }
}
}
pub struct MaildirLoaderPostProcessor {
name: String
}
impl PostProcessor<Vec<MailListingData>> for MaildirLoaderPostProcessor {
type Output = LinearLayout;
fn postprocess(&self, list: Vec<MailListingData>) -> Self::Output {
use cursive::view::SizeConstraint;
let name = self.name.clone();
let tab = TableView::<MailListingData, MailListingColumn>::new()
.column(MailListingColumn::Date, "Date", |c| c.width(20))
.column(MailListingColumn::From, "From", |c| c)
.column(MailListingColumn::To, "To", |c| c)
.column(MailListingColumn::Subject, "Subject", |c| c)
.default_column(MailListingColumn::Date)
.items(list)
.selected_item(0)
.on_submit(move |siv: &mut Cursive, row: usize, index: usize| {
let mail_body = siv.call_on_name(&format!("{}-mail-list", name), move |table: &mut ResizedView<TableView<MailListingData, MailListingColumn>>| {
table.get_inner_mut() // TODO: Bug in cursive_table_view::TableView::borrow_item() implementation
.borrow_item(row)
.map(|mail_listing| {
mail_listing.mail.parsed().get_body()
})
});
siv.call_on_name(&format!("{}-mail-view", name), move |mail_view: &mut ResizedView<TextView>| {
let body = match mail_body.flatten() {
Some(Ok(body)) => body,
Some(Err(e)) => format!("Failed to parse mail body: {:?}", e),
None => format!("No mail body found"),
};
mail_view.get_inner_mut().set_content(body);
});
});
LinearLayout::vertical()
.child({
ResizedView::new(SizeConstraint::Full,
SizeConstraint::Full,
tab)
.with_name(format!("{}-mail-list", self.name))
})
.child({
ResizedView::new(SizeConstraint::Full,
SizeConstraint::AtMost(50),
TextView::new("Not a loaded mail yet"))
.with_name(format!("{}-mail-view", self.name))
})
}
}
#[derive(Copy, Clone, PartialEq, Eq, Hash)]
pub enum MailListingColumn {
Date,
From,
To,
Subject,
}
#[derive(Clone, Debug)]
pub struct MailListingData {
mail: Mail,
date: String,
from: String,
to: String,
subject: String,
}
impl TableViewItem<MailListingColumn> for MailListingData {
fn to_column(&self, column: MailListingColumn) -> String {
match column {
MailListingColumn::Date => self.date.clone(),
MailListingColumn::From => self.from.clone(),
MailListingColumn::To => self.to.clone(),
MailListingColumn::Subject => self.subject.clone(),
}
}
fn cmp(&self, other: &Self, column: MailListingColumn) -> std::cmp::Ordering
where Self: Sized
{
match column {
MailListingColumn::Date => self.date.cmp(&other.date),
MailListingColumn::From => self.from.cmp(&other.from),
MailListingColumn::To => self.to.cmp(&other.to),
MailListingColumn::Subject => self.subject.cmp(&other.subject),
}
}
}
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