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//
// imag - the personal information management suite for the commandline
// Copyright (C) 2015-2019 Matthias Beyer <mail@beyermatthias.de> and contributors
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; version
// 2.1 of the License.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
//
use toml_query::insert::TomlValueInsertExt;
use toml_query::read::TomlValueReadExt;
use toml_query::read::TomlValueReadTypeExt;
use toml::Value;
use libimagstore::store::Entry;
use libimagentrylink::linkable::Linkable;
use libimagerror::errors::ErrorMsg as EM;
use failure::Fallible as Result;
use failure::ResultExt;
use failure::Error;
use failure::err_msg;
use crate::store::CategoryStore;
pub trait EntryCategory {
fn set_category(&mut self, s: &str) -> Result<()>;
fn set_category_checked(&mut self, register: &dyn CategoryStore, s: &str) -> Result<()>;
fn get_category(&self) -> Result<String>;
fn has_category(&self) -> Result<bool>;
fn remove_category(&mut self) -> Result<()>;
}
impl EntryCategory for Entry {
fn set_category(&mut self, s: &str) -> Result<()> {
trace!("Setting category '{}' UNCHECKED", s);
self.get_header_mut()
.insert(&String::from("category.value"), Value::String(s.to_string()))
.context(format_err!("Failed to insert header at 'category.value' of '{}'", self.get_location()))
.context(EM::EntryHeaderWriteError)
.map_err(Error::from)
.map(|_| ())
}
/// Check whether a category exists before setting it.
///
/// This function should be used by default over EntryCategory::set_category()!
fn set_category_checked(&mut self, register: &dyn CategoryStore, s: &str) -> Result<()> {
trace!("Setting category '{}' checked", s);
let mut category = register
.get_category_by_name(s)?
.ok_or_else(|| Error::from(err_msg("Category does not exist")))?;
let _ = self.set_category(s)?;
let _ = self.add_link(&mut category)?;
Ok(())
}
fn get_category(&self) -> Result<String> {
trace!("Getting category from '{}'", self.get_location());
self.get_header()
.read_string("category.value")?
.ok_or_else(|| Error::from(err_msg("Category name missing")))
}
fn has_category(&self) -> Result<bool> {
trace!("Has category? '{}'", self.get_location());
self.get_header()
.read("category.value")
.context(format_err!("Failed to read header at 'category.value' of '{}'", self.get_location()))
.context(EM::EntryHeaderReadError)
.map_err(Error::from)
.map(|x| x.is_some())
}
/// Remove the category setting
///
/// # Warning
///
/// This does _only_ remove the category setting in the header. This does _not_ remove the
/// internal link to the category entry, nor does it remove the category from the store.
fn remove_category(&mut self) -> Result<()> {
use toml_query::delete::TomlValueDeleteExt;
self.get_header_mut()
.delete("category.value")
.context(format_err!("Failed to delete header at 'category.value' of '{}'", self.get_location()))
.context(EM::EntryHeaderWriteError)
.map_err(Error::from)
.map(|_| ())
}
}
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