use clap::{Parser, Subcommand};
use clap_complete::Shell;

#[derive(Parser)]
#[command(name = "streamd")]
#[command(
    author,
    version,
    about = "Personal knowledge management and time-tracking CLI using @Tag annotations"
)]
pub struct Cli {
    #[command(subcommand)]
    pub command: Option<Commands>,
}

#[derive(Subcommand)]
pub enum TodoAction {
    /// Edit a task by its number
    Edit {
        /// Task number to edit
        number: usize,
    },
    /// Mark a task as done
    Done {
        /// Task number to mark as done
        number: usize,
    },
}

#[derive(Subcommand)]
pub enum Commands {
    /// Create a new stream file
    New,

    /// Display open tasks
    Todo {
        /// Show tasks with dates in the future
        #[arg(long)]
        show_future: bool,

        #[command(subcommand)]
        action: Option<TodoAction>,
    },

    /// Edit a stream file by position
    Edit {
        /// Position of the file to edit (0 = most recent, negative = from oldest)
        #[arg(default_value = "1")]
        number: i32,
    },

    /// Display extracted timesheets
    Timesheet {
        /// Display time as minutes (HH:MM) instead of decimal hours (H.Hh)
        #[arg(short, long)]
        minutes: bool,

        /// Show all timecards grouped by day instead of the summary report
        #[arg(short, long)]
        debug: bool,
    },

    /// Generate shell completions
    Completions {
        /// Shell to generate completions for
        #[arg(value_enum)]
        shell: Shell,
    },
}