//! Backup restore data-transfer types.
//!
//! The parsed-backup [`RestoreInput`] and the [`RestoreResult`] tally. The actual
//! restore is performed transactionally by the storage backend
//! (`goingson_db_sqlite::restore_all`) so the whole merge is one all-or-nothing unit
//! and sub-collections are written verbatim; this module only defines the types that
//! cross the command -> storage boundary.

use crate::models::{
    Attachment, DailyNote, Email, Event, Milestone, MonthlyGoal, MonthlyReflection, Project,
    SavedView, SyncAccount, Task, TimeSession, WeeklyReview,
};
use crate::Contact;

/// Result of a restore operation.
#[derive(Debug, Default)]
pub struct RestoreResult {
    /// Number of projects restored.
    pub projects_restored: usize,
    /// Number of tasks restored.
    pub tasks_restored: usize,
    /// Number of events restored.
    pub events_restored: usize,
    /// Number of emails restored.
    pub emails_restored: usize,
    /// Number of subtasks restored.
    pub subtasks_restored: usize,
    /// Number of status tokens restored.
    pub status_tokens_restored: usize,
    /// Number of annotations restored.
    pub annotations_restored: usize,
    /// Number of contacts restored.
    pub contacts_restored: usize,
    /// Number of time sessions restored.
    pub time_sessions_restored: usize,
    /// Number of milestones restored.
    pub milestones_restored: usize,
    /// Number of daily notes restored.
    pub daily_notes_restored: usize,
    /// Number of attachment records restored.
    pub attachments_restored: usize,
    /// Number of sync accounts restored.
    pub sync_accounts_restored: usize,
    /// Number of saved views restored.
    pub saved_views_restored: usize,
    /// Number of weekly reviews restored.
    pub weekly_reviews_restored: usize,
    /// Number of monthly goals restored.
    pub monthly_goals_restored: usize,
    /// Number of monthly reflections restored.
    pub monthly_reflections_restored: usize,
}

/// Pre-parsed backup data for restoration.
pub struct RestoreInput {
    pub projects: Vec<Project>,
    pub tasks: Vec<Task>,
    pub events: Vec<Event>,
    pub emails: Vec<Email>,
    pub contacts: Vec<Contact>,
    pub time_sessions: Vec<TimeSession>,
    pub milestones: Vec<Milestone>,
    pub daily_notes: Vec<DailyNote>,
    pub attachments: Vec<Attachment>,
    pub sync_accounts: Vec<SyncAccount>,
    pub saved_views: Vec<SavedView>,
    pub weekly_reviews: Vec<WeeklyReview>,
    pub monthly_goals: Vec<MonthlyGoal>,
    pub monthly_reflections: Vec<MonthlyReflection>,
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn restore_result_default_all_zeros() {
        let r = RestoreResult::default();
        assert_eq!(r.projects_restored, 0);
        assert_eq!(r.tasks_restored, 0);
        assert_eq!(r.events_restored, 0);
        assert_eq!(r.emails_restored, 0);
    }

    #[test]
    fn restore_input_accepts_empty_vecs() {
        let input = RestoreInput {
            projects: vec![],
            tasks: vec![],
            events: vec![],
            emails: vec![],
            contacts: vec![],
            time_sessions: vec![],
            milestones: vec![],
            daily_notes: vec![],
            attachments: vec![],
            sync_accounts: vec![],
            saved_views: vec![],
            weekly_reviews: vec![],
            monthly_goals: vec![],
            monthly_reflections: vec![],
        };
        assert!(input.projects.is_empty());
        assert!(input.tasks.is_empty());
        assert!(input.events.is_empty());
        assert!(input.emails.is_empty());
        assert!(input.contacts.is_empty());
        assert!(input.time_sessions.is_empty());
        assert!(input.milestones.is_empty());
        assert!(input.daily_notes.is_empty());
        assert!(input.attachments.is_empty());
        assert!(input.sync_accounts.is_empty());
    }
}