// Copyright 2015 Till Höppner
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

extern crate ilc;
extern crate chrono;
#[macro_use]
extern crate clap;
extern crate rustc_serialize;
#[macro_use]
extern crate log;
extern crate env_logger;
extern crate glob;
extern crate blist;

use clap::{ Arg, App, AppSettings,  SubCommand };

mod chain;
mod ageset;
mod app;

fn main() {
    env_logger::init().unwrap();
    let args = App::new("ilc")
        .version(crate_version!())
        .setting(AppSettings::GlobalVersion)
        .setting(AppSettings::VersionlessSubcommands)
        .setting(AppSettings::ArgRequiredElseHelp)
        .author("Till Höppner <till@hoeppner.ws>")
        .about("A converter and statistics utility for IRC log files")
        .arg(Arg::with_name("timezone")
             .help("UTC offset in the direction of the western hemisphere")
             .global(true)
             .takes_value(true)
             .long("timezone")
             .short("t"))
        .arg(Arg::with_name("date")
             .help("Override the date for this log, ISO 8601, YYYY-MM-DD")
             .global(true)
             .takes_value(true)
             .long("date")
             .short("d"))
        .arg(Arg::with_name("infer_date")
             .help("Try to use the filename as date for the current log")
             .global(true)
             .long("infer-date"))
        .arg(Arg::with_name("channel")
             .help("Set a channel for the current log")
             .global(true)
             .takes_value(true)
             .long("channel")
             .short("c"))
        .arg(Arg::with_name("input_format")
             .help("Set the input format for the current log")
             .global(true)
             .takes_value(true)
             .long("inf"))
        .arg(Arg::with_name("output_format")
             .help("Set the output format for the current log")
             .global(true)
             .takes_value(true)
             .long("outf"))
        .arg(Arg::with_name("input_files")
             .help("Specify an input file, instead of stdin")
             .global(true)
             .takes_value(true).multiple(true)
             .long("input")
             .short("i"))
        .arg(Arg::with_name("output_file")
             .help("Specify an output file, instead of stdout")
             .global(true)
             .takes_value(true)
             .long("output")
             .short("o"))
        .subcommand(SubCommand::with_name("parse")
                    .about("Parse the input, checking the format"))
        .subcommand(SubCommand::with_name("convert")
                    .about("Convert from a source to a target format"))
        .subcommand(SubCommand::with_name("freq")
                    .about("Analyse the activity of users by certain metrics")
                    .arg(Arg::with_name("count")
                         .help("The number of items to be displayed")
                         .takes_value(true)
                         .long("count")))
        .subcommand(SubCommand::with_name("seen")
                    .about("Print the last line a nick was active")
                    .arg(Arg::with_name("nick")
                         .help("The nick you're looking for")
                         .takes_value(true).required(true)
                         .index(1)))
        .subcommand(SubCommand::with_name("sort")
                    .about("Sorts a log by time"))
        .subcommand(SubCommand::with_name("dedup")
                    .about("Removes duplicate log entries in close proximity"))
        .get_matches();

    match args.subcommand() {
        ("parse", Some(args)) => app::parse::parse(args),
        ("convert", Some(args)) => app::convert::convert(args),
        ("freq", Some(args)) => app::freq::freq(args),
        ("seen", Some(args)) => app::seen::seen(args),
        ("sort", Some(args)) => app::sort::sort(args),
        ("dedup", Some(args)) => app::dedup::dedup(args),
        (sc, _) if !sc.is_empty() => panic!("Unimplemented subcommand `{}`, this is a bug", sc),
        _ => ()
    }
}