use sqlx::error::BoxDynError;
use sqlx::{Database, Decode, Encode, Postgres, Type};
use sqlx::encode::IsNull;

#[repr(i32)]
#[derive(Clone, Copy)]
pub enum DefaultMessageNotificationSetting {
    All = 0,
    MentionsOnly = 1,
    None = 2,
}


impl Into<i32> for &DefaultMessageNotificationSetting {
    fn into(self) -> i32 {
        *self as i32
    }
}

impl TryFrom<i32> for DefaultMessageNotificationSetting {
    type Error = BoxDynError;

    fn try_from(value: i32) -> Result<Self, Self::Error> {
        match value {
            0 => Ok(Self::All),
            1 => Ok(Self::MentionsOnly),
            2 => Ok(Self::None),
            _ => Err(format!("Unknown value {}", value).into()),
        }
    }
}

impl Type<Postgres> for DefaultMessageNotificationSetting {
    fn type_info() -> <Postgres as Database>::TypeInfo {
        <i32 as Type<Postgres>>::type_info()
    }

    fn compatible(ty: &<Postgres as Database>::TypeInfo) -> bool {
        <i32 as Type<Postgres>>::compatible(ty)
    }
}

impl Encode<'_, Postgres> for DefaultMessageNotificationSetting {
    fn encode_by_ref(&self, buf: &mut <Postgres as Database>::ArgumentBuffer<'_>) -> Result<IsNull, BoxDynError> {
        <i32 as sqlx::Encode<Postgres>>::encode(self.into(), buf)
    }
}

impl Decode<'_, Postgres> for DefaultMessageNotificationSetting {
    fn decode(value: <Postgres as Database>::ValueRef<'_>) -> Result<Self, BoxDynError> {
        <i32 as Decode<Postgres>>::decode(value).map(Self::try_from)?
    }
}