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use chrono::NaiveDate;
use sqlx::executor::RefExecutor;
use sqlx::postgres::PgQueryAs;
use sqlx::Postgres;

#[derive(Debug, PartialEq, sqlx::FromRow)]
pub struct Invoice {
    pub invoice_id: i64,
    pub order_id: i64,
    pub invoice_date: NaiveDate,
    pub payment_transaction_id: String,
    pub payment_instructions: Option<String>,
}

#[derive(Debug)]
pub struct NewInvoice<'a> {
    pub order_id: i64,
    pub invoice_date: NaiveDate,
    pub payment_transaction_id: &'a str,
    pub payment_instructions: Option<&'a str>,
}

pub async fn fetch<'e>(
    id: i64,
    conn: impl RefExecutor<'e, Database = Postgres> + Send + 'e,
) -> Result<Option<Invoice>, sqlx::Error> {
    sqlx::query_as("SELECT * FROM invoices WHERE invoice_id = $1")
        .bind(id)
        .fetch_optional(conn)
        .await
}

pub async fn by_order_id<'e>(
    order_id: i64,
    conn: impl RefExecutor<'e, Database = Postgres> + Send + 'e,
) -> Result<Option<Invoice>, sqlx::Error> {
    sqlx::query_as("SELECT * FROM invoices WHERE order_id = $1")
        .bind(order_id)
        .fetch_optional(conn)
        .await
}

pub async fn insert<'e>(
    invoice: &NewInvoice<'_>,
    conn: impl RefExecutor<'e, Database = Postgres> + Send + 'e,
) -> Result<Invoice, sqlx::Error> {
    // deconstruct to not miss new properties in the future
    let NewInvoice {
        order_id,
        invoice_date,
        payment_transaction_id,
        payment_instructions,
    } = invoice;
    sqlx::query_as(
        "
            INSERT INTO invoices (
                order_id,
                invoice_date,
                payment_transaction_id,
                payment_instructions
            ) VALUES (
                $1, $2, $3, $4
            ) RETURNING *
        ",
    )
    .bind(order_id)
    .bind(invoice_date)
    .bind(payment_transaction_id)
    .bind(payment_instructions)
    .fetch_one(conn)
    .await
}