//! Category objects (SPEC §14.3.3, §14.3.4 E-23, E-24).

use serde::{Deserialize, Serialize};
use utoipa::ToSchema;
use uuid::Uuid;

use super::{ServerVersionSchema, TimestampSchema, UuidSchema};

#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize, ToSchema)]
#[serde(rename_all = "snake_case")]
pub enum DefaultCategoryKey {
    Groceries,
    Restaurants,
    Home,
    Utilities,
    Transport,
    Travel,
    Entertainment,
    Health,
    Shopping,
    Other,
}

#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, ToSchema)]
pub struct Category {
    #[schema(value_type = UuidSchema)]
    pub id: Uuid,
    #[schema(required = true)]
    pub default_key: Option<DefaultCategoryKey>,
    #[schema(required = true)]
    pub name: Option<String>,
    /// An icon token of SPEC §9.7.
    pub icon: String,
    /// A colour token of SPEC §9.7.
    pub color: String,
    #[schema(schema_with = super::int)]
    pub sort_order: i64,
    #[schema(value_type = TimestampSchema)]
    pub created_at: String,
    #[schema(value_type = TimestampSchema)]
    pub updated_at: String,
    #[schema(value_type = Option<TimestampSchema>, required = true)]
    pub archived_at: Option<String>,
    #[schema(value_type = Option<TimestampSchema>, required = true)]
    pub deleted_at: Option<String>,
    #[schema(value_type = ServerVersionSchema)]
    pub server_version: i64,
}

/// E-23 `POST /categories`.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, ToSchema)]
pub struct CreateCategoryRequest {
    pub name: String,
    pub icon: String,
    pub color: String,
}

/// E-24 `PATCH /categories/{category_id}`. `name`: absent = unchanged (`None`), `null` = reset a default category's
/// name (`Some(None)`).
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, ToSchema)]
#[schema(min_properties = 1)]
pub struct PatchCategoryRequest {
    #[serde(
        default,
        deserialize_with = "super::double_option",
        skip_serializing_if = "Option::is_none"
    )]
    #[schema(value_type = Option<String>, required = false)]
    pub name: Option<Option<String>>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    #[schema(value_type = String)]
    pub icon: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    #[schema(value_type = String)]
    pub color: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    #[schema(schema_with = super::int)]
    pub sort_order: Option<i64>,
}