rtimelogger 0.8.4

A simple cross-platform CLI tool to track working hours, lunch breaks, and calculate surplus time
Documentation 
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use crate::models::event::Event;
use crate::models::event_type::EventType;
use crate::models::location::Location;
use chrono::{DateTime, Local};

#[derive(Debug, Clone)]
pub struct Pair {
    pub in_event: Event,
    pub out_event: Option<Event>,
    pub duration_minutes: i64,
    pub lunch_minutes: i64,
    pub position: Location,
    pub work_gap: bool,
}

#[derive(Debug, Clone)]
pub struct Gap {
    pub start: DateTime<Local>,
    pub end: DateTime<Local>,
    pub duration_minutes: i64,
    pub is_work_gap: bool, // will be computed in 0.8.0-beta1
}

#[derive(Debug, Default, Clone)]
pub struct Timeline {
    pub events: Vec<Event>,
    pub pairs: Vec<Pair>,
    pub gaps: Vec<Gap>,
    pub total_worked_minutes: i64,
}

pub fn build_timeline(events: &[Event]) -> Timeline {
    if events.is_empty() {
        return Timeline::default();
    }

    // -----------------------------
    // Sort events chronologically
    // -----------------------------
    let mut sorted = events.to_vec();
    sorted.sort_by_key(|e| e.timestamp());

    let mut pairs = Vec::new();
    let mut gaps = Vec::new();
    let mut total = 0;

    let mut i = 0;

    // -----------------------------
    // Build Pairs
    // -----------------------------
    while i < sorted.len() {
        let ev = &sorted[i];

        if ev.kind == EventType::In {
            // Case: IN followed by OUT → valid pair
            if i + 1 < sorted.len() && sorted[i + 1].kind == EventType::Out {
                let in_ev = ev.clone();
                let out_ev = sorted[i + 1].clone();

                // --- LUNCH CALCULATION ---
                let lunch_minutes = match (in_ev.lunch, out_ev.lunch) {
                    (Some(l1), Some(l2)) => l1.max(l2) as i64,
                    (Some(l1), None) => l1 as i64,
                    (None, Some(l2)) => l2 as i64,
                    _ => 0,
                };

                // --- WORKED TIME ---
                let raw_minutes = (out_ev.timestamp() - in_ev.timestamp()).num_minutes();
                let worked_minutes = raw_minutes - lunch_minutes;

                total += worked_minutes;

                pairs.push(Pair {
                    in_event: in_ev.clone(),
                    out_event: Some(out_ev.clone()),
                    duration_minutes: worked_minutes,
                    lunch_minutes,
                    position: in_ev.location,
                    work_gap: out_ev.work_gap,
                });

                i += 2;
                continue;
            }

            // Case: IN without OUT → open pair
            let in_ev = ev.clone();

            pairs.push(Pair {
                in_event: in_ev.clone(),
                out_event: None,
                duration_minutes: 0,
                lunch_minutes: in_ev.lunch.unwrap_or(0) as i64,
                position: in_ev.location,
                work_gap: false,
            });
        }

        i += 1;
    }

    // -----------------------------
    // Compute GAPS between pairs
    // -----------------------------
    for w in pairs.windows(2) {
        let p1 = &w[0];
        let p2 = &w[1];

        if let Some(out1) = &p1.out_event {
            let start = out1.timestamp();
            let end = p2.in_event.timestamp();

            if end > start {
                gaps.push(Gap {
                    start,
                    end,
                    duration_minutes: (end - start).num_minutes(),
                    // ✅ il gap è lavorativo se l'OUT del pair precedente ha work_gap=true
                    is_work_gap: out1.work_gap,
                });
            }
        }
    }

    Timeline {
        events: sorted,
        pairs,
        gaps,
        total_worked_minutes: total,
    }
}