use chrono::{DateTime, Utc};
use serde::{Deserialize, Serialize};
use sqlx::FromRow;
use uuid::Uuid;

#[derive(Debug, Clone, Serialize, Deserialize, FromRow)]
pub struct ReadProgress {
    pub user_id: Uuid,
    pub manga_id: Uuid,
    pub chapter_id: Option<Uuid>,
    pub page: i32,
    pub updated_at: DateTime<Utc>,
}

/// Enriched row for the history view — joins in the manga's title and
/// cover plus the chapter number (when the chapter still exists) so a
/// card can render without extra round-trips.
#[derive(Debug, Clone, Serialize, FromRow)]
pub struct ReadProgressSummary {
    pub manga_id: Uuid,
    pub manga_title: String,
    pub manga_cover_image_path: Option<String>,
    pub chapter_id: Option<Uuid>,
    /// `None` when the chapter was deleted after this row was written
    /// (FK ON DELETE SET NULL on `chapter_id`).
    pub chapter_number: Option<i32>,
    pub page: i32,
    pub updated_at: DateTime<Utc>,
}

/// Returned by `GET /me/read-progress/:manga_id`. Same shape as
/// `ReadProgressSummary` minus the manga title/cover (the caller
/// already knows them — they're on the manga detail page). Crucially
/// includes `chapter_number` so the "Continue reading" CTA can render
/// without resolving the chapter id against a paged chapters list.
#[derive(Debug, Clone, Serialize, FromRow)]
pub struct ReadProgressForManga {
    pub manga_id: Uuid,
    pub chapter_id: Option<Uuid>,
    pub chapter_number: Option<i32>,
    pub page: i32,
    pub updated_at: DateTime<Utc>,
}

#[derive(Debug, Clone, Deserialize)]
pub struct UpsertReadProgress {
    pub manga_id: Uuid,
    pub chapter_id: Option<Uuid>,
    pub page: Option<i32>,
}