use std::ops::Deref;
use anyhow::Result;
use reblessive::tree::Stk;
use surrealdb_types::{SqlFormat, ToSql};
use tracing::instrument;
use super::AlterKind;
use crate::catalog::Permission;
use crate::catalog::providers::BucketProvider;
use crate::ctx::FrozenContext;
use crate::dbs::Options;
use crate::doc::CursorDoc;
use crate::err::Error;
use crate::expr::parameterize::expr_to_ident;
use crate::expr::{Base, Expr, Literal};
use crate::iam::{Action, ResourceKind};
use crate::val::Value;
#[derive(Clone, Debug, Eq, PartialEq, Hash)]
pub(crate) struct AlterBucketStatement {
pub name: Expr,
pub if_exists: bool,
pub backend: AlterKind<String>,
pub permissions: Option<Permission>,
pub readonly: AlterKind<()>,
pub comment: AlterKind<String>,
}
impl Default for AlterBucketStatement {
fn default() -> Self {
Self {
name: Expr::Literal(Literal::None),
if_exists: false,
backend: AlterKind::None,
permissions: None,
readonly: AlterKind::None,
comment: AlterKind::None,
}
}
}
impl AlterBucketStatement {
#[instrument(level = "trace", name = "AlterBucketStatement::compute", skip_all)]
pub(crate) async fn compute(
&self,
stk: &mut Stk,
ctx: &FrozenContext,
opt: &Options,
doc: Option<&CursorDoc>,
) -> Result<Value> {
ctx.is_allowed(opt, Action::Edit, ResourceKind::Bucket, Base::Db)?;
let (_, _) = opt.ns_db()?;
let (ns, db) = ctx.expect_ns_db_ids(opt).await?;
let txn = ctx.tx();
let name = expr_to_ident(stk, ctx, opt, doc, &self.name, "bucket name").await?;
let mut bu = match txn.get_db_bucket(ns, db, &name, None).await? {
Some(v) => v.deref().clone(),
None => {
if self.if_exists {
return Ok(Value::None);
}
return Err(Error::BuNotFound {
name: name.clone(),
}
.into());
}
};
match self.backend {
AlterKind::Set(ref v) => bu.backend = Some(v.into()),
AlterKind::Drop => bu.backend = None,
AlterKind::None => {}
}
if let Some(ref p) = self.permissions {
bu.permissions = p.clone();
}
match self.readonly {
AlterKind::Set(_) => bu.readonly = true,
AlterKind::Drop => bu.readonly = false,
AlterKind::None => {}
}
match self.comment {
AlterKind::Set(ref v) => bu.comment = Some(v.clone()),
AlterKind::Drop => bu.comment = None,
AlterKind::None => {}
}
let key = crate::key::database::bu::new(ns, db, &name);
txn.set(&key, &bu).await?;
txn.clear_cache();
Ok(Value::None)
}
}
impl ToSql for AlterBucketStatement {
fn fmt_sql(&self, f: &mut String, fmt: SqlFormat) {
let stmt: crate::sql::statements::alter::AlterBucketStatement = self.clone().into();
stmt.fmt_sql(f, fmt);
}
}