use clap_verbosity_flag;
use clap_log_flag;
use structopt;

#[derive(StructOpt, Debug)]
#[structopt(raw(setting = "structopt::clap::AppSettings::ColoredHelp"))]
/// Hello World! How are you doing?
pub struct Cli {
    #[structopt(flatten)]
    pub verbose: clap_verbosity_flag::Verbosity,
    #[structopt(flatten)]
    pub log: clap_log_flag::Log,
    #[structopt(short = "s")]
    /// Use the given sink.
    ///
    /// By default it will use the last equalized sink it finds
    pub sink: Option<String>,
    #[structopt(subcommand)]
    pub cmd: Command,
}

#[derive(StructOpt, Debug)]
pub enum Command {
        #[structopt(name = "pa-eq")]
        /// PulseAudio equalizer related commands
        ///
        /// Warning: the PulseAudio equalizer has been deprecated for a while,
        /// and is known to sometimes cause crashes, latency or audible
        /// artifacts
        PaEq(pa_eq::Command),
        #[structopt(name = "pa-effects")]
        /// PulseEffects equalizer related commands
        PaEffects(pa_effects::Command),
}

arg_enum! {
    #[derive(Debug)]
    pub enum EqualizerConfFormat {
        EqualizerAPO
    }
}

pub mod pa_eq {
    use super::EqualizerConfFormat;

    #[derive(StructOpt, Debug)]
    pub enum Command {
        #[structopt(name = "load",)]
        /// Load and switch to a given equalizer configuration
        Load(LoadCli),
        #[structopt(name = "reset")]
        /// Switch to a neutral equalizer
        Reset(ResetCli),
    }

    #[derive(StructOpt, Debug)]
    pub struct LoadCli {
        #[structopt(default_value = "-")]
        /// The file from which to load the equalizer configuration
        ///
        /// If "-" is given, read the configuration from the command-line.
        pub file: String,
        #[structopt(
            short = "f",
            raw(
                possible_values = "&EqualizerConfFormat::variants()",
                case_insensitive = "true"
            ),
            default_value = "EqualizerAPO"
        )]
        /// The file format of the equalizer configuration
        pub format: EqualizerConfFormat,
    }

    #[derive(StructOpt, Debug)]
    pub struct ResetCli {}

}

pub mod pa_effects {
    use super::EqualizerConfFormat;

    #[derive(StructOpt, Debug)]
    pub enum Command {
        #[structopt(name = "export-preset",)]
        /// Export a PulseEffects preset
        ExportPreset(ExportPresetCli),
    }

    #[derive(StructOpt, Debug)]
    pub struct ExportPresetCli {
        #[structopt(default_value = "-")]
        /// The file from which to load the equalizer configuration
        ///
        /// If "-" is given, read the configuration from the command-line.
        pub file: String,
        #[structopt(
            short = "f",
            raw(
                possible_values = "&EqualizerConfFormat::variants()",
                case_insensitive = "true"
            ),
            default_value = "EqualizerAPO"
        )]
        /// The file format of the equalizer configuration
        pub format: EqualizerConfFormat,
        #[structopt(short = "p")]
        /// Use a given file as a base for PulseEffects preset instead of the
        /// default one.
        ///
        /// If "-" is given, read the base preset from the command-line.
        pub base_preset: Option<String>,
        #[structopt(short = "o")]
        /// Write the preset to the given file, instead of the standard output
        pub output: Option<String>,
    }

}