use askama_axum::IntoResponse;
use axum::{
    extract::{Path, State},
    response::Redirect,
    Extension,
};
use chrono::Utc;

///User related structs and functions
use serde::{Deserialize, Serialize};
use sqlx::{prelude::FromRow, SqlitePool};

use crate::middlewares::is_authorized;

#[derive(Default, Clone, Debug, FromRow, Serialize, Deserialize)]
pub struct UserData {
    pub id: i64,
    pub created_at: i64,
    pub created_by: i64,
    pub updated_at: i64,
    pub updated_by: i64,
    pub email: String,
    pub name: String,
    pub family_name: String,
    pub given_name: String,
}

#[derive(Serialize, Deserialize)]
pub struct RoleData {
    pub id: i64,
    pub created_at: i64,
    pub created_by: i64,
    pub updated_at: i64,
    pub updated_by: i64,
    pub name: String,
    pub description: String,
}

#[derive(Default, Clone, Debug, FromRow, Serialize, Deserialize)]
pub struct UserRoles {
    pub id: i64,
    pub created_at: i64,
    pub created_by: i64,
    pub updated_at: i64,
    pub updated_by: i64,
    pub user_id: i64,
    pub role_id: i64,
}

#[derive(Default, Clone, Debug, FromRow, Serialize, Deserialize)]
pub struct UserRolesDisplay {
    pub id: i64,
    pub created_at: i64,
    pub created_by: i64,
    pub updated_at: i64,
    pub updated_by: i64,
    pub user_id: i64,
    pub user_name: String,
    pub role_id: i64,
    pub role_name: String,
}

#[derive(Default, Clone, Debug, FromRow, Serialize, Deserialize)]
pub struct UserWishlistItem {
    pub id: i64,
    pub created_at: i64,
    pub created_by: i64,
    pub updated_at: i64,
    pub updated_by: i64,
    pub user_id: i64,
    pub item: String,
    pub item_url: String,
    pub purchased_by: i64,
    pub received_at: i64,
}

/*
pub async fn get_user_roles(user_id: i64, db_pool: &SqlitePool) -> Vec<UserRoles> {
    // Get user roles
    let user_roles = sqlx::query_as(
        r#"SELECT id, created_at, created_by, updated_at, updated_by, user_id, role_id FROM user_roles WHERE user_id = ?"#
    )
    .bind(user_id)
    .fetch_all(db_pool)
    .await
    .unwrap();

    user_roles
} */

pub async fn get_user_roles_display(user_id: i64, db_pool: &SqlitePool) -> Vec<UserRolesDisplay> {
    // Get user roles
    let user_roles = sqlx::query_as(
        r#"select ur.id, u.id as user_id, u.name as user_name, r.id as role_id, r.name as role_name, r.created_at, r.created_by, r.updated_at, r.updated_by from roles r join user_roles ur on ur.role_id = r.id join users u on u.id = ur.user_id WHERE ur.user_id = ?"#
    )
    .bind(user_id)
    .fetch_all(db_pool)
    .await
    .unwrap();

    user_roles
}

pub async fn get_other_roles_display(user_id: i64, db_pool: &SqlitePool) -> Vec<UserRolesDisplay> {
    // Get roles user does not have
    let user_roles = sqlx::query_as(
        r#"select 0 as id, r.created_at, r.created_by, r.updated_at, r.updated_by, ? as user_id, '' as user_name, r.id as role_id, r.name as role_name from roles r where r.id not in (select ur.role_id from user_roles ur where ur.user_id = ?)"#
    )
    .bind(user_id.clone())
    .bind(user_id)
    .fetch_all(db_pool)
    .await
    .unwrap();

    user_roles
}

pub async fn add_user_role(
    Path((user_id, role_id)): Path<(i64, i64)>,
    State(db_pool): State<SqlitePool>,
    Extension(user_data): Extension<Option<UserData>>,
) -> impl IntoResponse {
    if is_authorized("/roles", user_data.clone(), db_pool.clone()).await {
        let now = Utc::now().timestamp();

        sqlx::query("INSERT INTO user_roles (created_at, created_by, updated_at, updated_by, user_id, role_id) VALUES (?, ?, ?, ?, ?, ?)")
            .bind(now)// Created now
            .bind(user_data.as_ref().unwrap().id)// Created by current user
            .bind(now) // Updated now
            .bind(user_data.as_ref().unwrap().id) // Updated by current user
            .bind(user_id)
            .bind(role_id)
            .execute(&db_pool)
            .await
            .unwrap();

        // TODO - send email to user regarding role changes
        
        let redirect_url = format!("/users/{user_id}");
        Redirect::to(&redirect_url).into_response()
    } else {
        Redirect::to("/").into_response()
    }
}

pub async fn delete_user_role(
    Path((user_id, user_role_id)): Path<(i64, i64)>,
    State(db_pool): State<SqlitePool>,
    Extension(user_data): Extension<Option<UserData>>,
) -> impl IntoResponse {
    if is_authorized("/roles", user_data, db_pool.clone()).await {
        sqlx::query("DELETE FROM user_roles WHERE id = ?")
            .bind(user_role_id)
            .execute(&db_pool)
            .await
            .unwrap();

        let redirect_url = format!("/users/{user_id}");
        Redirect::to(&redirect_url).into_response()
    } else {
        Redirect::to("/").into_response()
    }
}

pub async fn get_user_wishlist_items(user_id: i64, db_pool: &SqlitePool) -> Vec<UserWishlistItem> {
    // Get wish list items for the user
    let user_wishlist_items = sqlx::query_as(
        r#"select id, created_at, created_by, updated_at, updated_by, user_id, item, item_url, purchased_by, received_at from wishlist_items where user_id = ?"#
    )
    .bind(user_id)
    .fetch_all(db_pool)
    .await
    .unwrap();

    user_wishlist_items
}