110 lines
3.2 KiB
Rust
110 lines
3.2 KiB
Rust
use std::cmp::Ordering;
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use libimagstore::store::Store;
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use libimagstore::storeid::IntoStoreId;
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use libimagerror::trace::trace_error;
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use chrono::offset::local::Local;
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use chrono::Datelike;
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use itertools::Itertools;
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use chrono::naive::datetime::NaiveDateTime;
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use entry::Entry;
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use diaryid::DiaryId;
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use error::DiaryError as DE;
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use error::DiaryErrorKind as DEK;
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use result::Result;
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use iter::DiaryEntryIterator;
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use is_in_diary::IsInDiary;
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#[derive(Debug)]
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pub struct Diary<'a> {
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store: &'a Store,
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name: &'a str,
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}
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impl<'a> Diary<'a> {
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pub fn open(store: &'a Store, name: &'a str) -> Diary<'a> {
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Diary {
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store: store,
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name: name,
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}
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}
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// create or get a new entry for today
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pub fn new_entry_today(&self) -> Result<Entry> {
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let dt = Local::now();
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let ndt = dt.naive_local();
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let id = DiaryId::new(String::from(self.name), ndt.year(), ndt.month(), ndt.day(), 0, 0);
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self.new_entry_by_id(id)
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}
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pub fn new_entry_by_id(&self, id: DiaryId) -> Result<Entry> {
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self.retrieve(id.with_diary_name(String::from(self.name)))
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}
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pub fn retrieve(&self, id: DiaryId) -> Result<Entry> {
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id.into_storeid()
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.and_then(|id| self.store.retrieve(id))
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.map(|fle| Entry::new(fle))
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.map_err(|e| DE::new(DEK::StoreWriteError, Some(Box::new(e))))
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}
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// Get an iterator for iterating over all entries
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pub fn entries(&self) -> Result<DiaryEntryIterator<'a>> {
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self.store
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.retrieve_for_module("diary")
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.map(|iter| DiaryEntryIterator::new(self.name, self.store, iter))
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.map_err(|e| DE::new(DEK::StoreReadError, Some(Box::new(e))))
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}
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pub fn delete_entry(&self, entry: Entry) -> Result<()> {
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if !entry.is_in_diary(self.name) {
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return Err(DE::new(DEK::EntryNotInDiary, None));
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}
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let id = entry.get_location().clone();
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drop(entry);
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self.store.delete(id)
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.map_err(|e| DE::new(DEK::StoreWriteError, Some(Box::new(e))))
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}
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pub fn get_youngest_entry(&self) -> Option<Result<Entry>> {
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match self.entries() {
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Err(e) => Some(Err(e)),
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Ok(entries) => {
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entries.sorted_by(|a, b| {
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match (a, b) {
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(&Ok(ref a), &Ok(ref b)) => {
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let a : NaiveDateTime = a.diary_id().into();
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let b : NaiveDateTime = b.diary_id().into();
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a.cmp(&b)
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},
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(&Ok(_), &Err(ref e)) => {
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trace_error(e);
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Ordering::Less
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},
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(&Err(ref e), &Ok(_)) => {
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trace_error(e);
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Ordering::Greater
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},
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(&Err(ref e1), &Err(ref e2)) => {
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trace_error(e1);
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trace_error(e2);
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Ordering::Equal
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},
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}
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}).into_iter().next()
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}
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}
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}
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pub fn name(&self) -> &'a str {
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&self.name
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}
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}
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