tally-todo 0.7.0

Make TODO management a little more automatic
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use crate::models::{
    changes::Change,
    common::{Priority, Version},
};
use chrono::{DateTime, Utc};
use serde::{Deserialize, Serialize};
use std::collections::BTreeMap;

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Release {
    pub version: Version,
    pub date: DateTime<Utc>,
    pub changes_by_priority: BTreeMap<Priority, Vec<Change>>,
    pub changes_by_tag: BTreeMap<String, Vec<Change>>,
}

impl Release {
    /// Build a Release from a list of changes (used when reading from history.json)
    pub fn from_changes(version: Version, date: DateTime<Utc>, changes: Vec<&Change>) -> Self {
        let mut changes_by_priority = BTreeMap::new();
        let mut changes_by_tag = BTreeMap::new();

        for change in changes {
            changes_by_priority
                .entry(change.priority)
                .or_insert_with(Vec::new)
                .push(change.clone());

            for tag in &change.tags {
                changes_by_tag
                    .entry(tag.clone())
                    .or_insert_with(Vec::new)
                    .push(change.clone());
            }
        }

        Self {
            version,
            date,
            changes_by_priority,
            changes_by_tag,
        }
    }
}