paymentlib/enums/
invoice_status.rs

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use serde::Deserialize;
use serde::Serialize;
use std::fmt;
use std::fmt::Formatter;


#[cfg(feature = "diesel")]
use {
    diesel::backend::Backend,
    diesel::deserialize::FromSql,
    diesel::pg::Pg,
    diesel::serialize::{IsNull, Output, ToSql},
    diesel::types::Varchar,
    diesel::{deserialize, not_none, serialize},
    diesel::{AsExpression, FromSqlRow},
    std::io::Write,
};

#[derive(Debug, PartialEq, Clone, Serialize, Deserialize)]
#[cfg_attr(feature = "diesel", derive(AsExpression, FromSqlRow))]
#[cfg_attr(feature = "diesel", sql_type = "Varchar")]
pub enum InvoiceStatus {
    Paid,
    Created,
    Processing,
    Canceled,
    Refunded,
    Blocked,
}
impl fmt::Display for InvoiceStatus {
    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
        write!(f, "{:?}", self)
    }
}
#[cfg(feature = "diesel")]
impl ToSql<Varchar, Pg> for InvoiceStatus {
    fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> serialize::Result {
        match *self {
            InvoiceStatus::Paid => out.write_all(b"Paid")?,
            InvoiceStatus::Created => out.write_all(b"Created")?,
            InvoiceStatus::Processing => out.write_all(b"Processing")?,
            InvoiceStatus::Canceled => out.write_all(b"Canceled")?,
            InvoiceStatus::Refunded => out.write_all(b"Refunded")?,
            InvoiceStatus::Blocked => out.write_all(b"Blocked")?,
        }
        Ok(IsNull::No)
    }
}

#[cfg(feature = "diesel")]
impl FromSql<Varchar, Pg> for InvoiceStatus {
    fn from_sql(bytes: Option<&<Pg as Backend>::RawValue>) -> deserialize::Result<Self> {
        match not_none!(bytes) {
            b"Paid" => Ok(InvoiceStatus::Paid),
            b"Created" => Ok(InvoiceStatus::Created),
            b"Processing" => Ok(InvoiceStatus::Processing),
            b"Canceled" => Ok(InvoiceStatus::Canceled),
            b"Refunded" => Ok(InvoiceStatus::Refunded),
            b"Blocked" => Ok(InvoiceStatus::Blocked),

            _ => Err("Unrecognized enum variant".into()),
        }
    }
}

/*
    Enum for InvoiceConfirmationStatus to only take Pending, Confirmed, or Rejected
*/
#[derive(Debug, PartialEq, Clone, Serialize, Deserialize)]
#[cfg_attr(feature = "diesel", derive(AsExpression, FromSqlRow))]
#[cfg_attr(feature = "diesel", sql_type = "Varchar")]
pub enum InvoiceConfirmationStatus {
    Pending,
    Confirmed,
    Rejected
}

impl fmt::Display for InvoiceConfirmationStatus {
    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
        write!(f, "{:?}", self)
    }
}

#[cfg(feature = "diesel")]
impl ToSql<Varchar, Pg> for InvoiceConfirmationStatus {
    fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> serialize::Result {
        match *self {
            InvoiceConfirmationStatus::Pending => out.write_all(b"Pending")?,
            InvoiceConfirmationStatus::Confirmed => out.write_all(b"Confirmed")?,
            InvoiceConfirmationStatus::Rejected => out.write_all(b"Rejected")?,
        }
        Ok(IsNull::No)
    }
}

#[cfg(feature = "diesel")]
impl FromSql<Varchar, Pg> for InvoiceConfirmationStatus {
    fn from_sql(bytes: Option<&<Pg as Backend>::RawValue>) -> deserialize::Result<Self> {
        match not_none!(bytes) {
            b"Pending" => Ok(InvoiceConfirmationStatus::Pending),
            b"Confirmed" => Ok(InvoiceConfirmationStatus::Confirmed), 
            b"Rejected" => Ok(InvoiceConfirmationStatus::Rejected),
            _ => Err("Unrecognized enum variant".into()),
        }
    }
}