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use std::borrow::Cow;

use sha2::{Digest, Sha384};

use super::MigrationType;

#[derive(Debug, Clone)]
pub struct Migration {
    pub version: i64,
    pub description: Cow<'static, str>,
    pub migration_type: MigrationType,
    pub sql: Cow<'static, str>,
    pub checksum: Cow<'static, [u8]>,
}

impl Migration {
    pub fn new(
        version: i64,
        description: Cow<'static, str>,
        migration_type: MigrationType,
        sql: Cow<'static, str>,
    ) -> Self {
        let checksum = Cow::Owned(Vec::from(Sha384::digest(sql.as_bytes()).as_slice()));

        Migration {
            version,
            description,
            migration_type,
            sql,
            checksum,
        }
    }
}