use chrono::Utc;
use serde::{Deserialize, Serialize};
use std::borrow::Cow;

#[derive(Debug, Serialize, Deserialize)]
pub struct UserResponse {
    pub username: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct RegisterRequest {
    pub email: String,
    pub username: String,
    pub password: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct RegisterResponse {
    pub session: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct LoginRequest {
    pub username: String,
    pub password: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct LoginResponse {
    pub session: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct AddHistoryRequest {
    pub id: String,
    pub timestamp: chrono::DateTime<Utc>,
    pub data: String,
    pub hostname: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct CountResponse {
    pub count: i64,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct SyncHistoryRequest {
    pub sync_ts: chrono::DateTime<chrono::FixedOffset>,
    pub history_ts: chrono::DateTime<chrono::FixedOffset>,
    pub host: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct SyncHistoryResponse {
    pub history: Vec<String>,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct ErrorResponse<'a> {
    pub reason: Cow<'a, str>,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct IndexResponse {
    pub homage: String,
    pub version: String,
}

// Doubled up with the history sync stuff, because atm we need to support BOTH.
// People are still running old clients, and in some cases _very_ old clients.
#[derive(Debug, Serialize, Deserialize)]
pub enum AddEventRequest {
    Create(AddHistoryRequest),

    Delete {
        id: String,
        timestamp: chrono::DateTime<Utc>,
        hostname: chrono::DateTime<Utc>,

        // When we delete a history item, we push up an event marking its client
        // id as being deleted.
        history_id: String,
    },
}

#[derive(Debug, Serialize, Deserialize)]
pub struct SyncEventRequest {
    pub sync_ts: chrono::DateTime<chrono::FixedOffset>,
    pub event_ts: chrono::DateTime<chrono::FixedOffset>,
    pub host: String,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct SyncEventResponse {
    pub events: Vec<String>,
}