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

/// Row as stored in the database.
/// Timestamps are stored as ISO 8601 strings because `sqlx::Any` does not
/// provide a blanket `Encode`/`Decode` impl for `chrono::DateTime<Utc>`.
#[derive(Debug, Clone, sqlx::FromRow)]
pub struct EmoteRow {
    pub uuid: String,
    pub name: String,
    pub alias: Option<String>,
    pub image_key: String,
    /// ISO 8601 string, e.g. "2022-02-13T11:27:38.219685+00:00"
    pub created: String,
    /// ISO 8601 string
    pub modified: String,
}

impl EmoteRow {
    pub fn created_dt(&self) -> DateTime<Utc> {
        DateTime::parse_from_rfc3339(&self.created)
            .map(|dt| dt.with_timezone(&Utc))
            .unwrap_or_else(|_| Utc::now())
    }

    pub fn modified_dt(&self) -> DateTime<Utc> {
        DateTime::parse_from_rfc3339(&self.modified)
            .map(|dt| dt.with_timezone(&Utc))
            .unwrap_or_else(|_| Utc::now())
    }
}

/// JSON representation returned by the API.
#[derive(Debug, Serialize, Deserialize)]
pub struct EmoteResponse {
    pub name: String,
    pub url: String,
    pub created: DateTime<Utc>,
    pub modified: DateTime<Utc>,
}

/// Payload for updating an existing emote.
#[derive(Debug, Deserialize)]
pub struct UpdateEmoteRequest {
    pub name: Option<String>,
    pub alias: Option<String>,
    pub image_key: Option<String>,
}

pub fn new_uuid() -> String {
    Uuid::new_v4().to_string()
}