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use chrono::prelude::*;
use crate::icalwrap::*;
use std::collections::HashMap;
use std::fs;
use std::path::{Path,PathBuf};
use std::time::SystemTime;
use walkdir::DirEntry;
use crate::defaults::*;
use super::{IndexArgs, indextime};
use crate::utils::fileutil;
use crate::utils::lock;
use crate::utils::misc;
use crate::KhResult;
pub fn action_index(args: &IndexArgs) -> KhResult<()> {
let reindex = args.reindex;
let indexpath = match &args.path {
Some(path) => path.clone(),
None => get_caldir(),
};
index_dir(&indexpath, reindex)
}
fn add_buckets_for_calendar(buckets: &mut HashMap<String, Vec<String>>, cal: &IcalVCalendar) {
use super::bucketable::Bucketable;
use super::bucketable::Merge;
match cal.get_buckets() {
Ok(cal_buckets) => buckets.merge(cal_buckets),
Err(error) => {
warn!("{}", error)
}
}
}
fn index_dir(dir: &Path, reindex: bool) -> KhResult<()> {
use std::time::Instant;
let _lock = lock::lock_file_exclusive(&get_indexlockfile())?;
info!("Recursively indexing '.ics' files in directory: {}", dir.to_string_lossy());
if !dir.exists() {
Err(format!("Directory doesn't exist: {}", dir.to_string_lossy()))?;
}
let now = Instant::now();
let start_time = Utc::now();
let last_index_time = if reindex {
debug!("Forced reindex, indexing all files");
None
} else {
let last_index_time = indextime::get_index_time();
match last_index_time {
Some(time) => debug!("Previously indexed {}, indexing newer files only", time.with_timezone(&Local)),
None => debug!("No previous index time, indexing all files"),
}
last_index_time
};
let modified_since = last_index_time.map(|time| time.timestamp()).unwrap_or(0);
let ics_files = get_ics_files(dir, modified_since);
let buckets = read_buckets(ics_files);
let indexdir = get_indexdir();
let clear_index_dir = last_index_time.is_none();
prepare_index_dir(&indexdir, clear_index_dir)?;
write_index(&indexdir, &buckets);
info!("Index written in {}ms", misc::format_duration(&now.elapsed()));
indextime::write_index_time(&start_time);
Ok(())
}
pub fn get_ics_files(dir: &Path, modified_since: i64) -> impl Iterator<Item = PathBuf> {
use walkdir::WalkDir;
WalkDir::new(dir)
.follow_links(true)
.into_iter()
.filter_entry(move |entry| accept_entry(entry, modified_since))
.filter_map(|e| e.ok())
.filter(|e| e.file_type().is_file())
.filter(|e| e.path().extension().map_or(false, |extension| extension == "ics"))
.map(|entry| entry.into_path())
}
fn accept_entry(dir_entry: &DirEntry, modified_since: i64) -> bool {
if dir_entry.path().is_dir() {
return true;
}
dir_entry.metadata()
.map_err(|err| err.into()) // transform to io::Error
.and_then(|metadata| metadata.modified())
.map(|modified| modified.duration_since(SystemTime::UNIX_EPOCH).unwrap())
.map(|modified| modified.as_secs() as i64)
.map(|modified| modified > modified_since)
.unwrap_or(false)
}
fn read_buckets(ics_files: impl Iterator<Item = PathBuf>) -> HashMap<String, Vec<String>> {
let mut buckets: HashMap<String, Vec<String>> = HashMap::new();
let mut total_files = 0;
for file in ics_files {
debug!("Indexing file: {:?}", file);
match fileutil::read_file_to_string(&file) {
Ok(content) => {
total_files += 1;
match IcalVCalendar::from_str(&content, Some(&file)) {
Ok(cal) => add_buckets_for_calendar(&mut buckets, &cal),
Err(error) => error!("{:?}: {}", file, error)
}
}
Err(error) => error!("{}", error),
}
}
info!("Loaded {} files into {} buckets", total_files, buckets.len());
buckets
}
fn write_index(index_dir: &Path, buckets: &HashMap<String, Vec<String>>) {
for (key, val) in buckets.iter() {
let bucketfile = bucket_file(index_dir, key);
trace!("Writing bucket: {}", key);
let content = &[&val.join("\n"), "\n"].concat();
if let Err(error) = fileutil::append_file(&bucketfile, content) {
error!("{}", error);
return;
}
}
}
fn bucket_file(index_dir: &Path, key: &str) -> PathBuf {
let mut result = PathBuf::from(index_dir);
result.push(key);
result
}
fn prepare_index_dir(indexdir: &Path, clear_index_dir: bool) -> Result<(), std::io::Error> {
if indexdir.exists() && clear_index_dir {
info!("Clearing index directory: {}", indexdir.to_string_lossy());
fs::remove_dir_all(&indexdir)?
}
if !indexdir.exists() {
info!("Creating index directory: {}", indexdir.to_string_lossy());
fs::create_dir(&indexdir)?;
}
Ok(())
}
#[cfg(test)]
mod integration {
use super::*;
use crate::testutils::prepare_testdir;
use assert_fs::prelude::*;
use crate::cli::CommandLine;
use crate::cli::Command::Index;
use structopt::StructOpt;
#[test]
fn test_index() {
let testdir = prepare_testdir("testdir");
let args = CommandLine::from_iter(&["khaleesi", "index"]);
if let Index(x) = args.cmd {
action_index(&x).unwrap();
}
testdir.child(".khaleesi/index/2018-W50").assert("1544740200 twodaysacrossbuckets.ics\n");
testdir.child(".khaleesi/index/2018-W51").assert("1544740200 twodaysacrossbuckets.ics\n");
}
}
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