//! Everything a screen or popup can ask the app to do.
//!
//! Screens and popups never change your data themselves: they return an
//! `Action`, and the app applies it in one place (`App::apply`), saves, and
//! reports what happened. That's the only way anything changes.

use jiff::civil::Date;
use jiff::{SignedDuration, Timestamp};

use crate::domain::Segment;
use crate::export::ExportFormat;
use crate::export::timesheet::CopyPreset;
use crate::time::DateRange;
use crate::ui::{Component, Tab};

pub enum Action {
    // ----- Moving around the app
    GoTo(Tab),
    OpenPopup(Box<dyn Component>),
    ClosePopup,
    /// The help popup for the current screen.
    ShowHelp,
    /// Show a message in the status line.
    Notify(String),
    Quit,

    // ----- The shift
    Start,
    /// Start working as if you had pressed Start at this earlier moment.
    StartAt(Timestamp),
    Pause,
    /// Pause as if you had pressed Pause at this earlier moment.
    PauseAt(Timestamp),
    EndDay,
    EndDayAt(Timestamp),
    /// Move the start of the session in progress by this much.
    ShiftRunningStart(SignedDuration),
    /// Correct the session in progress: when it started, and optionally
    /// when it actually stopped (you forgot to pause).
    FixRunning {
        since: Timestamp,
        stopped: Option<Timestamp>,
    },
    /// Start a pomodoro break, or come back from one. With paid breaks the
    /// shift keeps running; without, it's the same as Pause / Start.
    TakeBreak,
    /// Silence the break suggestion for a while.
    Snooze,

    // ----- Recorded work
    AddSegment {
        day: Date,
        segment: Segment,
    },
    /// Replace segment `index` of `day`, filing the new one under `new_day`.
    ReplaceSegment {
        day: Date,
        index: usize,
        segment: Segment,
        new_day: Date,
    },
    DeleteSegment {
        day: Date,
        index: usize,
    },
    Undo,
    Redo,

    // ----- Getting data out
    Copy {
        days: Vec<Date>,
        preset: CopyPreset,
    },
    Export {
        format: ExportFormat,
        range: DateRange,
    },

    // ----- Settings, by their key in config.toml
    SetSetting {
        key: &'static str,
        value: String,
    },
    ResetSetting {
        key: &'static str,
    },
    ToggleWhichKey,
}