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//
// imag - the personal information management suite for the commandline
// Copyright (C) 2015, 2016 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 itertools::Itertools;
use libimagstore::store::Entry;
use libimagerror::into::IntoError;
use libimagstore::toml_ext::TomlValueExt;
use error::TagErrorKind;
use error::MapErrInto;
use result::Result;
use tag::{Tag, TagSlice};
use util::is_tag;
use toml::Value;
pub trait Tagable {
fn get_tags(&self) -> Result<Vec<Tag>>;
fn set_tags(&mut self, ts: &[Tag]) -> Result<()>;
fn add_tag(&mut self, t: Tag) -> Result<()>;
fn remove_tag(&mut self, t: Tag) -> Result<()>;
fn has_tag(&self, t: TagSlice) -> Result<bool>;
fn has_tags(&self, ts: &[Tag]) -> Result<bool>;
}
impl Tagable for Value {
fn get_tags(&self) -> Result<Vec<Tag>> {
let tags = try!(self.read("imag.tags").map_err_into(TagErrorKind::HeaderReadError));
match tags {
Some(Value::Array(tags)) => {
if !tags.iter().all(|t| is_match!(*t, Value::String(_))) {
return Err(TagErrorKind::TagTypeError.into());
}
if tags.iter().any(|t| match *t {
Value::String(ref s) => !is_tag(s),
_ => unreachable!()})
{
return Err(TagErrorKind::NotATag.into());
}
Ok(tags.iter()
.cloned()
.map(|t| {
match t {
Value::String(s) => s,
_ => unreachable!(),
}
})
.collect())
},
None => Ok(vec![]),
_ => Err(TagErrorKind::TagTypeError.into()),
}
}
fn set_tags(&mut self, ts: &[Tag]) -> Result<()> {
if ts.iter().any(|tag| !is_tag(tag)) {
debug!("Not a tag: '{}'", ts.iter().filter(|t| !is_tag(t)).next().unwrap());
return Err(TagErrorKind::NotATag.into());
}
let a = ts.iter().unique().map(|t| Value::String(t.clone())).collect();
self.set("imag.tags", Value::Array(a))
.map(|_| ())
.map_err(Box::new)
.map_err(|e| TagErrorKind::HeaderWriteError.into_error_with_cause(e))
}
fn add_tag(&mut self, t: Tag) -> Result<()> {
if !is_tag(&t) {
debug!("Not a tag: '{}'", t);
return Err(TagErrorKind::NotATag.into());
}
self.get_tags()
.map(|mut tags| {
tags.push(t);
self.set_tags(&tags.into_iter().unique().collect::<Vec<_>>()[..])
})
.map(|_| ())
}
fn remove_tag(&mut self, t: Tag) -> Result<()> {
if !is_tag(&t) {
debug!("Not a tag: '{}'", t);
return Err(TagErrorKind::NotATag.into());
}
self.get_tags()
.map(|mut tags| {
tags.retain(|tag| tag.clone() != t);
self.set_tags(&tags[..])
})
.map(|_| ())
}
fn has_tag(&self, t: TagSlice) -> Result<bool> {
let tags = try!(self.read("imag.tags").map_err_into(TagErrorKind::HeaderReadError));
if !tags.iter().all(|t| is_match!(*t, Value::String(_))) {
return Err(TagErrorKind::TagTypeError.into());
}
Ok(tags
.iter()
.any(|tag| {
match *tag {
Value::String(ref s) => { s == t },
_ => unreachable!()
}
}))
}
fn has_tags(&self, tags: &[Tag]) -> Result<bool> {
let mut result = true;
for tag in tags {
result = result && try!(self.has_tag(tag));
}
Ok(result)
}
}
impl Tagable for Entry {
fn get_tags(&self) -> Result<Vec<Tag>> {
self.get_header().get_tags()
}
fn set_tags(&mut self, ts: &[Tag]) -> Result<()> {
self.get_header_mut().set_tags(ts)
}
fn add_tag(&mut self, t: Tag) -> Result<()> {
self.get_header_mut().add_tag(t)
}
fn remove_tag(&mut self, t: Tag) -> Result<()> {
self.get_header_mut().remove_tag(t)
}
fn has_tag(&self, t: TagSlice) -> Result<bool> {
self.get_header().has_tag(t)
}
fn has_tags(&self, ts: &[Tag]) -> Result<bool> {
self.get_header().has_tags(ts)
}
}
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