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phonograph/interim-server/src/routes/relations_single/update_value_handler.rs
2025-10-09 08:01:01 +00:00

104 lines
3.2 KiB
Rust

use std::collections::HashMap;
use axum::{
Json, debug_handler,
extract::{Path, State},
response::{IntoResponse as _, Response},
};
// [`axum_extra`]'s form extractor is preferred:
// https://docs.rs/axum-extra/0.10.1/axum_extra/extract/struct.Form.html#differences-from-axumextractform
use axum_extra::extract::Form;
use interim_models::{
datum::Datum,
portal::Portal,
workspace::Workspace,
workspace_user_perm::{self, WorkspaceUserPerm},
};
use interim_pgtypes::{escape_identifier, pg_attribute::PgAttribute, pg_class::PgClass};
use serde::Deserialize;
use serde_json::json;
use sqlx::{postgres::types::Oid, query};
use uuid::Uuid;
use crate::{
app::{App, AppDbConn},
errors::{AppError, forbidden},
user::CurrentUser,
workspace_pooler::{RoleAssignment, WorkspacePooler},
};
#[derive(Debug, Deserialize)]
pub(super) struct PathParams {
portal_id: Uuid,
rel_oid: u32,
workspace_id: Uuid,
}
#[derive(Debug, Deserialize)]
pub(super) struct FormBody {
column: String,
pkeys: HashMap<String, Datum>,
value: Datum,
}
/// HTTP POST handler for updating a single value in a backing Postgres table.
///
/// This handler expects 3 path parameters with the structure described by
/// [`PathParams`].
#[debug_handler(state = App)]
pub(super) async fn post(
State(mut workspace_pooler): State<WorkspacePooler>,
AppDbConn(mut app_db): AppDbConn,
CurrentUser(user): CurrentUser,
Path(PathParams {
portal_id,
rel_oid,
workspace_id,
}): Path<PathParams>,
Form(form): Form<FormBody>,
) -> Result<Response, AppError> {
// Check workspace authorization.
let workspace_perms = WorkspaceUserPerm::belonging_to_user(user.id)
.fetch_all(&mut app_db)
.await?;
if workspace_perms.iter().all(|p| {
p.workspace_id != workspace_id || p.perm != workspace_user_perm::PermissionValue::Connect
}) {
return Err(forbidden!("access denied to workspace"));
}
// FIXME ensure workspace corresponds to rel/portal, and that user has
// permission to access/alter both as needed.
let portal = Portal::with_id(portal_id).fetch_one(&mut app_db).await?;
let workspace = Workspace::with_id(portal.workspace_id)
.fetch_one(&mut app_db)
.await?;
let mut workspace_client = workspace_pooler
.acquire_for(workspace.id, RoleAssignment::User(user.id))
.await?;
let rel = PgClass::with_oid(portal.class_oid)
.fetch_one(&mut workspace_client)
.await?;
let pkey_attrs = PgAttribute::pkeys_for_rel(Oid(rel_oid))
.fetch_all(&mut workspace_client)
.await?;
// TODO: simplify pkey management
form.pkeys
.get(&pkey_attrs.first().unwrap().attname)
.unwrap()
.clone()
.bind_onto(form.value.bind_onto(query(&format!(
"update {ident} set {value_col} = $1 where {pkey_col} = $2",
ident = rel.get_identifier(),
value_col = escape_identifier(&form.column),
pkey_col = escape_identifier(&pkey_attrs.first().unwrap().attname),
))))
.execute(workspace_client.get_conn())
.await?;
Ok(Json(json!({ "ok": true })).into_response())
}