2021-07-07 13:52:40 -05:00
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use std::convert::TryFrom;
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use std::io::Write;
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2021-07-10 13:20:42 -05:00
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use std::str::FromStr;
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2021-07-07 13:52:40 -05:00
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use clap::ArgMatches;
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2021-07-10 13:20:42 -05:00
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use chrono::{DateTime, Utc, Local, Datelike, TimeZone};
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2021-07-07 13:52:40 -05:00
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use regex::Regex;
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use crate::error::{Result, Error};
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use crate::database::Database;
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use crate::formatters::Formatter;
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use crate::config::Config;
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use crate::regex::parse_regex;
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use super::{Command, display::{Sheet, entries_for_display}};
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2021-07-10 13:20:42 -05:00
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/// Given a local datetime, returns the time when the month it belongs started
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fn beginning_of_month(time: DateTime<Local>) -> DateTime<Utc> {
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time.date().with_day(1).unwrap().and_hms(0, 0, 0).with_timezone(&Utc)
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}
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/// Given a datetime compute the time where the previous_month started in UTC
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fn beginning_of_previous_month(time: DateTime<Local>) -> DateTime<Utc> {
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match time.month() {
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1 => {
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Local.ymd(time.year()-1, 12, 1).and_hms(0, 0, 0).with_timezone(&Utc)
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}
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n => Local.ymd(time.year(), n-1, 1).and_hms(0, 0, 0).with_timezone(&Utc)
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}
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}
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enum MonthSpec {
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Last,
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This,
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Month(u32),
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}
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impl Default for MonthSpec {
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fn default() -> MonthSpec {
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MonthSpec::This
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}
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}
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impl FromStr for MonthSpec {
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type Err = Error;
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fn from_str(s: &str) -> Result<MonthSpec> {
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match s.trim().to_lowercase().as_str() {
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2021-07-10 13:27:38 -05:00
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"this" | "current" => Ok(MonthSpec::This),
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2021-07-10 13:20:42 -05:00
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"last" => Ok(MonthSpec::Last),
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"jan" | "january" => Ok(MonthSpec::Month(1)),
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"feb" | "february" => Ok(MonthSpec::Month(2)),
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"mar" | "march" => Ok(MonthSpec::Month(3)),
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"apr" | "april" => Ok(MonthSpec::Month(4)),
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"may" => Ok(MonthSpec::Month(5)),
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"jun" | "june" => Ok(MonthSpec::Month(6)),
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"jul" | "july" => Ok(MonthSpec::Month(7)),
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"aug" | "august" => Ok(MonthSpec::Month(8)),
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"sep" | "september" => Ok(MonthSpec::Month(9)),
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"oct" | "october" => Ok(MonthSpec::Month(10)),
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"nov" | "november" => Ok(MonthSpec::Month(11)),
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"dic" | "december" => Ok(MonthSpec::Month(12)),
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_ => Err(Error::InvalidMonthSpec(s.into())),
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}
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}
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2021-07-07 13:52:40 -05:00
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}
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#[derive(Default)]
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pub struct Args {
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ids: bool,
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month: MonthSpec,
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format: Formatter,
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grep: Option<Regex>,
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sheet: Option<Sheet>,
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}
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impl<'a> TryFrom<&'a ArgMatches<'a>> for Args {
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type Error = Error;
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fn try_from(matches: &'a ArgMatches) -> Result<Args> {
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Ok(Args {
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ids: matches.is_present("ids"),
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2021-07-10 13:20:42 -05:00
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month: matches.value_of("month").map(|s| s.parse()).transpose()?.unwrap_or(MonthSpec::This),
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2021-07-07 13:52:40 -05:00
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format: matches.value_of("format").unwrap().parse()?,
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grep: matches.value_of("grep").map(parse_regex).transpose()?,
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sheet: matches.value_of("sheet").map(|s| s.parse()).transpose()?,
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})
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}
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}
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pub struct MonthCommand { }
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impl<'a> Command<'a> for MonthCommand {
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type Args = Args;
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2021-07-16 12:45:27 -05:00
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fn handle<D, O, E>(args: Self::Args, db: &mut D, out: &mut O, err: &mut E, _config: &Config, now: DateTime<Utc>) -> Result<()>
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where
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D: Database,
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O: Write,
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E: Write,
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{
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let (start, end) = match args.month {
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MonthSpec::This => (beginning_of_month(now.with_timezone(&Local)), now),
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MonthSpec::Last => {
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(beginning_of_previous_month(now.with_timezone(&Local)), beginning_of_month(now.with_timezone(&Local)))
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},
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MonthSpec::Month(month) => {
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if month < now.month() {
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// the specified month is in the current year
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(
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Local.ymd(now.year(), month, 1).and_hms(0, 0, 0).with_timezone(&Utc),
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if month < 12 {
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Local.ymd(now.year(), month+1, 1).and_hms(0, 0, 0).with_timezone(&Utc)
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} else {
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Local.ymd(now.year()+1, 1, 1).and_hms(0, 0, 0).with_timezone(&Utc)
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}
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)
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} else {
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// use previous year
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(
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Local.ymd(now.year() - 1, month, 1).and_hms(0, 0, 0).with_timezone(&Utc),
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if month < 12 {
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Local.ymd(now.year() - 1, month + 1, 1).and_hms(0, 0, 0).with_timezone(&Utc)
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} else {
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Local.ymd(now.year(), 1, 1).and_hms(0, 0, 0).with_timezone(&Utc)
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}
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)
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}
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},
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};
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2021-07-07 13:52:40 -05:00
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2021-07-16 12:45:27 -05:00
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entries_for_display(Some(start), Some(end), args.sheet, db, out, err, args.format, args.ids, args.grep, now)
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2021-07-07 13:52:40 -05:00
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}
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}
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