use thiserror::Error;

#[derive(Debug, Error)]
pub enum DomainError {
    #[error("database error: {0}")]
    Database(String),
    #[error("password error: {0}")]
    Password(String),
    #[error("record not found")]
    NotFound,
    #[error("record already exists")]
    Conflict,
}

pub type DomainResult<T> = Result<T, DomainError>;

#[derive(Clone, Debug)]
pub struct User {
    pub id: i64,
    pub email: String,
    pub display_name: String,
    /// Opaque, random user handle used as the WebAuthn userHandle. Kept
    /// high-entropy and unpredictable per the WebAuthn spec to avoid user
    /// enumeration and cross-site correlation. Stored as raw bytes.
    pub user_handle: Vec<u8>,
}

#[derive(Clone, Debug)]
pub struct Passkey {
    pub id: i64,
    pub user_id: i64,
    pub credential_id: String,
    pub credential: String,
    /// WebAuthn sign counter, persisted for future cloned-authenticator
    /// detection. Not currently read by application logic.
    #[allow(dead_code)]
    pub counter: i64,
}

#[derive(Clone, Debug)]
pub struct SessionUser {
    pub user: User,
    pub csrf_token: String,
}

#[derive(Clone, Debug)]
pub struct GroceryList {
    pub id: i64,
    pub name: String,
    pub revision: i64,
    /// Unix timestamp of when the list was created.
    pub created_at: i64,
    /// Unix timestamp of when the list was archived; `None` when active.
    pub archived_at: Option<i64>,
}

#[derive(Clone, Debug)]
pub struct Item {
    pub id: i64,
    pub list_id: i64,
    pub name: String,
    pub quantity: String,
    pub note: String,
    pub category_id: Option<i64>,
    pub checked: bool,
    pub version: i64,
}

#[derive(Clone, Debug)]
pub struct Category {
    pub id: i64,
    pub name: String,
}

#[derive(Clone, Debug)]
pub struct MealCategory {
    pub id: i64,
    pub name: String,
}

#[derive(Clone, Debug)]
pub struct Meal {
    pub id: i64,
    pub name: String,
    pub description: String,
    pub category_id: Option<i64>,
    pub ingredients: Vec<MealIngredient>,
}

#[derive(Clone, Debug)]
pub struct MealIngredient {
    pub id: i64,
    pub name: String,
    pub quantity: String,
    pub note: String,
    pub category_id: Option<i64>,
}

#[derive(Clone, Debug)]
pub struct ListMeal {
    pub id: i64,
    /// The catalog meal this instance came from; `None` once the meal is deleted.
    #[allow(dead_code)]
    pub meal_id: Option<i64>,
    pub name: String,
    /// Whether the meal has been eaten (checked off) on this list.
    pub checked: bool,
    /// When the meal was added to the list.
    #[allow(dead_code)]
    pub created_at: i64,
}

#[derive(Clone, Debug)]
pub struct PresenceUser {
    pub user_id: i64,
    pub display_name: String,
}

/// A stored rewards-card number that can be shown as a scannable barcode.
#[derive(Clone, Debug)]
pub struct RewardsCard {
    pub id: i64,
    /// The owner of this card.
    #[allow(dead_code)]
    pub user_id: i64,
    pub store_name: String,
    pub number: String,
    /// Symbology used to render the barcode (e.g. "code128", "code39").
    pub symbology: String,
    /// When the card was added.
    #[allow(dead_code)]
    pub created_at: i64,
}